Publications

352. Il-Hwan Kim, Hyeongi Park, Chel-Jong Choi, You-Jeong Jung, Teun-Teun Kim, Hye-Won Seo, "Self-Assembled Titanium Oxide Composite Nanoscale Films for Terahertz EMI Shielding", ACS Applied Nano Materials, 9, 733 (2026)

351. Preethi Sudarsan, Chel-Jong Choi, Hee Jung Park, "Exceptional cathodic performance of nanostructured La-Sr-Co-Fe-O highly dispersed in porous yttria-stabilized zirconia frameworks for intermediate-temperature solid oxide fuel cells", International Journal of Hydrogen Energy, 198, 152591 (2026)

350. Sukjune Choi, Chel-Jong Choi, Do Young Noh, Hyon Chol Kang, "Identification of polymorphs in epitaxial SnO2 thin films deposited on sapphire (0001) substrates", Journal of Crystal Growth, 670, 128349 (2025)

349. D. Surya Reddy, V. Rajagopal Reddy, Chel-Jong Choi, "Gaussian distribution on electrical properties of identically fabricated Au/n-GaN Schottky junctions with a Nd2O3 interfacial layer", Materials Science in Semiconductor Processing, 196, 109650 (2025)

348. D. Mallikarjuna, A. Ashok Kumar, V. Rajagopal Reddy, S. Kaleemulla, V. Janardhanam, Chel-Jong Choi, "Photovoltaic and Barrier Properties of Au/n-Ge Schottky Junction Modified by Methylene Blue Organic Dye Interlayer”, Journal of Inorganic and Organometallic Polymers and Materials, 35, 1413–1425 (2025)

347. Hoon-Ki Lee, V. Janardhanam, Jae-Kyoung Mun, Tae-Hoon Jang, Kyu-Hwan Shim, Hyung Joong Yun, Jonghan Won, Chel-Jong Choi, “Enhancement of device performance in vertical Au/Ni/β-Ga2O3 Schottky barrier diodes using regularly aligned inner field plates”, Materials Science in Semiconductor Processing, 191, 109371 (2025)

346. V. Janardhanam, I. Jyothi, Sameer Pokhrel, Chel-Jong Choi, “Fermi-level depinning of Ge surface using hydrogen plasma-immersion ion implantation”, Journal of Alloys and Compounds, 1010, 177972 (2025)

345. D. Surya Reddy, V. Rajagopal Reddy, V. Janardhanam, Chel-Jong Choi, “Microstructural and chemical properties of high-k holmium oxide (Ho2O3) and its effect on interface properties and current transport process of Au/n-GaN/Ti/Al Schottky contact as an interlayer”, Vacuum, 231, 113780 (2025)

344. S. Sai Krupa, D. Surya Reddy, V. Rajagopal Reddy, Chel-Jong Choi, “Chemical and structural features of spin-coated magnesium oxide (MgO) and its impact on the barrier parameters and current conduction process of Au/undoped-InP Schottky contact as an interfacial layer”, Solid State Communications, 396, 115757 (2025)

343. Hyeon-Cheol Kim, V. Janardhanam, Sameer Pokhrel, Chel-Jong Choi, “Epilayer thickness effect on the electrical and breakdown characteristics of vertical β-Ga2O3 Schottky barrier diode”, Journal of Crystal Growth, 649, 127941 (2025)

342. Jong-Hee Kim, Hyeon-Cheol Kim, Hyeon-Yeong Jeong, V. Janardhanam, A. Ashok Kumar, V. Rajagopal Reddy, Chel-Jong Choi, “Digital etching of AlGaN/GaN heterostructures with GaN cap using inductively coupled oxygen plasma process combined with wet chemical treatment”, Materials Science in Semiconductor Processing, 181, 108622 (2024)

341. Hoon-Ki Lee, V. Janardhanam, Woojin Chang, Kyujun Cho, Chel-Jong Choi, Jae Kyoung Mun, “Effect of inductively coupled plasma etch on the interface barrier behavior of (001) β-Ga2O3 Schottky barrier diode”, Journal of Vacuum Science and Technology B, 42, 042204 (2024)

340. "D. Mallikarjuna, A. Ashok Kumar, S. Kaleemulla, V. Rajagopal Reddy, M. Raghavender, V. Janardhanam, Chel-Jong Choi", “Electrical, Structural and Photovoltaic properties of Acceptor Dye Modified Au/n-Ge heterostructure”, Solid State Communications, 386, 115523 (2024)

339. V. Janardhanam, Jong-Hee Kim, I. Jyothi, Hyun-Ho Jung, Seong-Jong Kim, Kyu-Hwan Shim, Chel-Jong Choi, “Enhancement of device performance in β-Ga2O3 Schottky barrier diodes with tetramethylammonium hydroxide treatment”, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 693, 134079 (2024)

338. Pavani M, Ashok Kumar, Rajagopal Reddy, Kaleemulla S, Janardhanam V, Chel-Jong Choi, "Analysis of Photodiode and Barrier Properties of CoPc/n-Ge Heterojunction under various Illumination Wavelengths”, Optik, 307, 171811 (2024)

337. Han-Soo Jang, Jong Hee Kim, Vallivedu Janardhanam, Hyun-Ho Jeong, Seong-Jong Kim, Chel-Jong Choi, “Microstructural evolution of Ni-stanogermanides and Sn segregation during interfacial reaction between Ni film and Ge1-xSnx epilayer grown on Si substrate”, Crystals, 14, 134 (2024)

336. D. Surya Reddy, V. Rajagopal Reddy, Chel-Jong Choi, “Dysprosium oxide (Dy2O3) layer effect on the interface possessions of Au/ n-GaN Schottky diode as an interlayer and its chemical and microstructural features”, Materials Science in Semiconductor Processing, 173, 108133 (2024)

335. M. Pavani, A. Ashok Kumar, V. Rajagopal Reddy, S. Kaleemulla, I. Jyothi, Chel-Jong Choi, “Optical, morphological and electrical properties of rapid thermally annealed CoPc/n-Ge heterostructures for photodiode applications”, Materials Science and Engineering: B, 300, 117102 (2024)

334. Munkhsaikhan Zumuukhorol, Sosorburam Boldbaatar, Zagarzusem Khurelbaatar, Ji-Yoon Paek, Kyu-Hwan Shim, Chel-Jong Choi, “Enhancing the Performance of Surface-Textured Ge Schottky Photodetectors using the Electroless Chemical Etching Method”, Materials Science in Semiconductor Processing, 169, 107907 (2024)

333. S. Sai Krupa, V. Rajagopal Reddy, Chel-Jong Choi, “Chemical states and electrical features of Ti/CaTiO3 (CT)/p-InP MIS-type Schottky diode with a high-k CT interlayer”, Materials Science in Semiconductor Processing, 169, 107876 (2024)

332. Pavani M, Ashok Kumar A, Rajagopal Reddy V, Kaleemulla S, Jyothi I, Chel-Jong Choi, “Electrical and Morphological properties of Au/n-Ge Schottky contacts by using the interfacial layer as cobalt pthalocyanine (CoPc)”, Materials Today Communications, 35, 106360 (2023)

331. D. Surya Reddy, V. Rajagopal Reddy, Chel-Jong Choi, “Exploration of microstructural, chemical states and electrical features of the Au/Er2O3/n-GaN MIS diode with a Er2O3 interlayer”, Materials Science and Engineering B, 298, 116914 (2023)

330. V. Janardhanam, Jong-Hee Kim, I. Jyothi, Min-Sung Kang, Sang-Kwon Lee, Chel-Jong Choi, “Carrier transport across PtSe2/n-type GaN heterojunction”, Vacuum, 218, 112597 (2023)

329. Dae-Sung Park, Aurora Diana Rata, Rasmus Tindal Dahm, Kanghyun Chu, Yulin Gan, Igor V. Maznichenko, Sergey Ostanin, Felix Trier, Hionsuck Baik, Woo Seok Choi, Chel-Jong Choi, Young Heon Kim, Gregory J. Rees, Hafliði Pétur Gíslason, Paweł Adam Buczek, Ingrid Mertig, Mihai Adrian Ionescu, Arthur Ernst, Kathrin Dörr, Paul Muralt, Nini Pryds, “Controlled Electronic and Magnetic Landscape in Self-Assembled Complex Oxide Heterostructures”, Advanced Materials, 35, 2300200 (2023)

328. V. Janardhanam, M. Zummukhozol, I. Jyothi, Kyu-Hwan Shim, Chel-Jong Choi, “Self-powered MoS2/n-type GaN heterojunction photodetector with broad spectral response in ultraviolet–visible–near-infrared range”, Sensors and Actuators: A. Physical, 36, 114534 (2023)

327. S Ashajyothi; Varra Rajagopal Reddy; Chel-Jong Choi, “Analysis of microstructure, chemical state and electrical features of Ti/WO3/p-InP heterojunction with a tungsten oxide insulating layer”, Journal of Materials Science: Materials in Electronics, 34, 1482 (2023)

326. D. Surya Reddy, V. Rajagopal Reddy, Chel-Jong Choi, “Modification of interface properties of Au/n-GaN Schottky junction by rare-earth oxide Nd2O3 as an interlayer and its microstructural characterization”, Vacuum, 215, 112300 (2023)

325. Sosorburam Boldbaatar, V. Janardhanam, Munkhsaikhan Zumuukhorol, Hoon-Ki Lee, Hae-Yong Lee, Hyo Jung Kim, Kyu-Hwan Shim, Chel-Jong Choi, “Temperature-dependent Schottky diode behavior of Ni Schottky contacts to α-Ga2O3 film epitaxially grown on sapphire substrate”, Material Science in Semiconductor Processing, 163, 107589 (2023)

324. Sakhone Pharkphoumy, Vallivedu Janardhanam, Tae-Hoon Jang, Kyu-Hwan Shim, Chel-Jong Choi, “Correlation of Crystal Defects with Device Performance of AlGaN/GaN High-Electron-Mobility Transistors Fabricated on Silicon and Sapphire Substrates”, Electronics, 12, 1049 (2023)

323. Young-Woo Ok, Vijaykumar D. Upadhyaya, Ajeet Rohatgi, Jong-Hee Kim, Chang-Hee Hong, Chel-Jong Choi, “Dose-dependency of contact resistance and sheet resistance of B-implanted emitters for n-type crystalline Si solar cells fabricated using a screen-printed fire-through Ag/Al paste metallization process”, Journal of the Korean Physical Society, 82, 707–711 (2023)

322. M.Zumuukhorol, Z.Khurelbaatar, Dong-HoKim, Kyu-Hwan Shim, V.Janardhanama, V. Rajagopal Reddy, Chel-JongChoi, “Broadband photodetector based on MoS2/Ge heterojunction for optoelectronic applications”, Vacuum, 209, 111746 (2023)

321. Hee Jung Park, Jeong Min Lee, Mohammad Nasir, Seung Jo Yoo, Chel-Jong Choi, Kimoon Lee, “Synthesis of ultra-thin nanobelt-like vanadium-oxide and its abnormal optical-electrical properties”, Ceramics International, 49, 6419-6428 (2023)

320. Wonki Lee, Jungtae Nam, Jaejun Park, Geonhee Lee, Seok hoon Ahn, Keun Soo Kim, Jeong-O Lee, Chel-Jong Choi, Jun Yeon Hwang, “Single Process of Pulsed Wire Discharge for Defect Healing and Reduction of Graphene Oxide”, Carbon, 201, 1184-1192 (2023)

319. V. Janardhanam, Sosorburam Boldbaatar, I. Jyothi, Dong-Ho Kim, Kyu-Hwan Shim*, and Chel-Jong Choi, “Rapid-thermal-annealing-induced microstructural evolution of Au/Ni/β-Ga2O3 Schottky diodes correlated with their electrical properties”, Journal of Alloys and Compounds, 918, 165622 (2022)

318. Jaejun Park, Wonki Lee, Jungtae Nam, Joong Tark Han, Chel-Jong Choi, Jun YeonHwang, “A study of the correlation between the oxidation degree and thickness of graphene oxides”, Carbon, 189, 579-585 (2022)

317. Jae Myoung Oh, Mohammad Nasir, byungki Ryu, Hyung Joong Yun, Chel-Jong Choi, Jong-Seong Bae, and Hee Jung Park, “Anomalous Optoelectric Properties of an Ultrathin Ruthenium Film with a Surface Oxide Layer for Flexible Transparent Conducting Electrodes”, Advanced Functional Materials, 32, 2109330 (2022)

316. Sakhone Pharkphoumy, Vallivedue Janardhanam, Tae-Hoon Jang, Jaejun Park, Kyu-Hwan Shim, Chel-Jong Choi, “Optimized Device Geometry of Normally-on Field-Plate Al-GaN/GaN High Electron Mobility Transistors for High Break-down Performance Using TCAD Simulation”, Electronics, 10, 2642 (2021)

315. Jaehyeon Lee, Jaeho Shim, Joo Song Lee, Chel-Jong Choi, Sang-Youp Yim, Yeonghoon Jin, Kyoungsik Yu, Young Jae Park, Seokhoon Ahn, Dong Ick Son, “Improving the performance of photovoltaic cells based on nanocomposites with contorted polycyclic aromatic hydrocarbon additive in bulk heterojunction”, Journal of Materials Chemistry C, 9, 13081–13089 (2021)

314. P. R. Sekhar Reddy, V. Janardhanam, V. Rajagopal Reddy, Min Hyuk Park, Chel-Jong Choi, “Effects of Rapid Thermal Annealing on the Structural, Optical, and Electrical Properties of Au/CuPc/n-Si (MPS)-type Schottky Barrier Diodes”, Applied Physics A, 127, 803 (2021)

313. V. Janardhanam, I. Jyothi, M. Zumuukhorol, Shim-Hoon Yuk, Kyu-Hwan Shim, Chel-Jong Choi, “High gain GaN ultraviolet Schottky photodetector with Al-doped ZnO interlayer”, Surfaces and Interfaces, 27, 101405 (2021)

312. V. Janardhanam, I. Jyothi, Sim-Hoon Yuk, Zummukhozol Munkhsaikan, Chel-Jong Choi, “Temperature-dependent interface barrier behavior in MoS2/n-GaN 2D/3D heterojunction”, Materials Letters, 296, 129893 (2021)

311. Yumin Sim, Jinbae Kim, Seo Hyoung Chang, Chel-Jong Choi, Maeng-Je Seong, “Highly Luminescent In2S3 thin films with preferred growth direction of [1 0 3]”, Applied Surface Science, 555, 149706 (2021)

310. Sim-Hoon Yuk, Vallivedu Janardhanam, Kyu-Hwan Shim, Chel-Jong Choi, “Microstructural and phase evolutions of Pt Contact to N-type In0.53Ga0.47As Driven by Rapid Thermal Annealing and Its Correlation with Specific Contact Resistivity”, Intermetallics, 133, 107178 (2021)

309. Varra Rajagopal Reddy, C. Venkata Prasad, V. Janardhanam, Chel-Jong Choi, “Electrical and carrier transport properties of Ti/α-amylase/p-InP MPS junction with a α-amylase polymer interlayer”, Journal of Materials Science: Materials in Electronics, 32, 8092–8105 (2021)

308. Puran Pandey, Siela Vongphachanh, Jongwon Yoon, bokyoung Kim, Chel-Jong Choi, Jung Inn Sohn, Woong-Ki Hong, “Silver nanowire-network-film-coated soft substrates with wrinkled surfaces for use as stretchable surface enhanced Raman scattering sensors”, Journal of Alloys and Compounds, 859, 157862 (2021)

307. P.R. Sekhar Reddy, V. Janardhanam, Kyu-Hwan Shim, Sung-Nam Lee, A. Ashok Kumar, V. Rajagopal Reddy, Chel Jong Choi, “Temperature-dependent Schottky barrier properties of Al/n-type Si Schottky barrier diode with Au–CuPc nanocomposite interlayer”, Thin Solid Films, 713, 138343 (2020)

306. Paruchuri Kondaiah, S.V. Jagadish Chandra, Elvira Fortunato, Choi Chel Jong, G. Mohan Rao, D.V. Rama Koti Reddy, S. Uthanna, “Substrate Temperature Influenced ZrO2 Films for MOS devices”, Surface and Interface Analysis, 52, 541–546 (2020)

305. Adila Rani Hyun Gwon Park, Da Som Song, Chel-Jong Choi, JongSun Lim, Sang Don Bu, “Water and air friendly alkali metals synthesis of the h-BN-C QDTs and the utilization in the non-volatile resistive switching memory devices”, Current Applied Physics, 20, 1001-1007 (2020)

304. V. Janardhanam, I. Jyothi, Yonghun Kim, Sung-Nam Lee, Hyung-Joong Yun, Woong-Ki Hong, Chel-Jong Choi, “Carrier conduction mechanisms of WSe2/p-type Ge epilayer heterojunction depending on the measurement temperature and applied bias”, Journal of Alloys and Compounds, 842, 155843(9pages) (2020)

303. Seonghoon Jeong, Sung-Nam Lee, Chel-Jong Choi, Hyunsoo Kim, “Enhanced optical output power of AlGaN/GaN ultraviolet light-emitting diodes fabricated with breakdown induced conductive channels”, Journal of Ceramic Processing Research, 21, s23-s27 (2020)

302. Shim-Hoon Yuk, Hyun-Gwon Park, V. Janardhanam, Kyu-Hwan Shim, Sung-Nam Lee, Chel Jong Choi, “Investigation of microstructural and electrical properties of self-aligned Ni-InGaAs alloy contacts to InGaAs as a function of rapid thermal annealing temperature”, Journal of Ceramic Processing Research, 21, s53-s57 (2020)

301. Lukas Bergmann, Pia Duering, Stefano Agrestini, Anna Efimenko, S.-C Liao, Zhiwei Hu, Pierluigi Gargiani, Chel-Jong Choi, Hionsuck Baik, Daesung Park, Kathrin Doerr, Diana Rata, “Growth-sequence-dependent interface magnetism of SrIrO3 - La0.7Sr0.3MnO3 bilayers”, AIP Advances, 10, 035132 (2020)

300. V. Rajagopal Reddy, Chel-Jong Choi, “Microstructural and interface properties of Au/SrTiO3 (STO)/n-GaN heterojunction with an e-beam evaporated high-k STO interlayer”, Journal of Alloys and Compounds, 823, 153775 (2020)

299. Hoo-Ki Lee, Hyung-Joong Yun, Kyu-Hwan Shim, Hyun-Gwon Park, Tae-Hoon Jang, Sung-Nam Lee, Chel-Jong Choi, “Improvement of dry etch-induced surface roughness of single crystalline β-Ga2O3 using post-wet chemical treatments”, Applied Surface Science, 506, 144673 (2020)

298. P.R. Sekhar Reddy, V. Janardhanam, Kyu-Hwan Shim, V. Rajagopal Reddy, Sung-Nam Lee, Chel-Jong Choi, “Temperature-dependent Schottky barrier parameters of Ni/Au on n-type (001) β-Ga2O3 Schottky barrier diode”, Vacuum, 171, 109012-1~109012-9 (2020)

297. P. Reddy; V. Janardhanam; Hoon-Ki Lee; Kyu-Hwan Shim; Sung-Nam Lee; V. R Reddy; Chel-Jong Choi, “Schottky barrier parameters and low-frequency noise characteristics of Au/Ni contact to n-type β-Ga2O3”, Journal of Electronic Materials, 49(1), 297-305 (2020)

296. Daeyoon Baek, Kyu-Hwan Shim, Sung-Nam Lee, Woong-Ki Hong, Chel-Jong Choi, “Suppression of Phosphorous Out-diffusion in PH3 Plasma Immersion Ion-implanted Germanium Epilayer Grown on Silicon (100) Substrate through SiOx Capping Layer”, Materials Transactions, 61(1), 195-199 (2020)

295. Konepachith Ouduangvilai, Hoon-Ki Lee, Vallivedu Janardhanam, P.R. Shekar Reddy, Chel-Jong Choi, Kyu-Hwan Shim, “Study of Gate Leakage Current on AlGaN/GaN MOS-HEMTs with Atomic Layer Deposited Al2O3 Gate Oxide”, Journal of Semiconductor Technology and Science, 19(6), 540-550 (2019)

294. M. Uma, V. Rajagopal Reddy, V. Janardhanam, Chel‑Jong Choi, “Effect of rare-earth Pr6O11 insulating layer on the electrical properties of Au/n-GaN Schottky electrode and its chemical and structural characterization”, Journal of Materials Science: Materials in Electronics, 30, 18710–18719 (2019)

293. M. Uma, N Balaram, P.R. Sekhar Reddy, V. Janardhanam, Varra Rajagopal Reddy, Hyung-Joong Yun, Sung-Nam Lee, Chel-Jong, Choi, “Structural, chemical and electrical properties of Au/La2O3/n-GaN MIS junction with a high-k lanthanum oxide insulating layer”, Journal of Electronic Materials, 48(7), 4217–4225 (2019)

292. M. Zumuukhorol, S. Boldbaatar, Z. Khurelbaatara, Kyu-Hwan Shim, Sung-Nam Lee, Chel-Jong Choi, “Variations of dark and photo currents of metal-semiconductor-metal photodetectors fabricated on Ge epilayer grown on Si substrate caused by the dimension of interdigitated Pt finger electrodes”, Journal of the Korean Physical Society, 74(7), 713-717 (2019)

291. V. Rajagopal Reddy, Chel-Jong Choi, “Microstructural, chemical and electrical characteristics of Au/magnetite (Fe3O4)/n-GaN MIS junction with a magnetite interlayer”, Vacuum, 164, 233-241 (2019)

290. V. Janardhanam, I. Jyothi, Sung-Nam Lee, V. Rajagopal Reddy, Chel-Jong Choi, “Rectifying and breakdown voltage enhancement of Au/n-GaN Schottky diode with Al-doped ZnO films and its structural characterization”, Thin Solid Films, 676, 125-132 (2019)

289. Vallivedu Janardhanama, Hyung-Joong Yun, Inapagundla Jyothi, Hoon-Ki Lee, Sung-Nam Lee, Jonghan Won, Chel-Jong Choi, “Fermi-level depinning in metal/Ge interface using oxygen plasma treatment”, Applied Surface Science, 463, 91-95 (2019)

288. Sakhone Pharkphoumy, Vallivedu Janardhanam, Moon-Ho Lee, Dae-Gi Kim, Sang-Sik Choi, Deok-Ho Cho, Chel-Jong Choi, Kyu-Hwan Shim, “Development of Semiconductor Bridge Ignition Chip Device with Robust ESD Protection of TVS Diodes”, Journal of Semiconductor Technology and Science, 18(6), 677-684 (2018)

287. Won-Yong Lee, No-Won Park, Yo-Seob Yoon, Jay-Young Ahn, Jung-Hoon Lee, Gil-Sung Kim, Tae Geun Kim, Chel-Jong Choi, Jin-Seong Park, Eiji Saitoh, Sang-Kwon Lee, “Direct probing of cross-plane thermal properties of ALD Al2O3/ZnO superlattice films with improved figure of merit and their cross-plane thermoelectric generating performance”, ACS Applied Materials & Interfaces Manuscript, 10, 44472−44482 (2018)

286. Dae-Sung Park, Gregory J. Rees, Haiyuan Wang, Diana Rata, Andrew J. Morris, Igor V. Maznichenko, Sergey Ostanin, Akash Bhatnagar, Chel-Jong Choi, Ragnar D. B. Jonsson, Kai Kaufmann, Reza Kashtiban, Marc Walker, Cheng-Tien Chiang, Einar B. Thorsteinsson, Zhengdong Luo, In-Sung Park, John V. Hanna, Ingrid Mertig, Kathrin Dorr, Hafliði P. Gislason, Chris F. McConville, “Electromagnetic Functionalization of Wide Band Gap Dielectric Oxides by Boron Interstitial Doping”, Advanced Materials, 30, 1802025(9 pages) (2018)

285. V. Janardhanam, I. Jyothi, Shim-Hoon Yuk, Kyu-Hwan Shim, Kee Young Lim, Chel-Jong Choi, Sung-Nam Lee, “Current transport and 1/f noise characteristics in ferromagnetic permalloy/n-type Ge Schottky contact”, Journal of the Korean Physical Society, 73(5), 605-611 (2018)

284. V. Janardhanam, I. Jyothi, P. R. Sekhar Reddy, Jaehee Cho, Jeong-Mook Cho, Chel-Jong Choi, Sung-Nam Lee, V. Rajagopal Reddy, M. Reddeppa, “Double Gaussian barrier distribution of permalloy (Ni0.8Fe0.2) Schottky contacts to n-type GaN”, Superlattices and Microstructures, 120, 508–516 (2018)

283. Vallivedu Janardhanam, Hyung-Joong Yun, Inapagundla Jyothi, Hoon-Ki Lee, Sung-Nam Lee, Jonghan Won, and Chel-Jong Choi, “Fermi-level depinning in germanium Schottky junction using nitrogen plasma treatment”, Electronics Letters, 54(14), 897-899 (2018)

282. Seung Bae Son, Yonghun Kim, byungjin Cho, Chel-Jong Choi, and Woong-Ki Hong, “Temperature-dependent electronic charge transport characteristics at MoS2/p-type Ge heterojunctions”, Journal of Alloys and Compounds, 757, 221-227 (2018)

281. Sejoon Oh, Han-Soo Jang, Chel-Jong Choi, Jaehee Cho, “Effects of surface passivation dielectrics on carrier transport in AlGaN/GaN heterostructure field-effect transistors”, AIP ADVANCES, 8, 045116 (2018)

280. N. Balaram, V. Rajagopal Reddy, P.R. Sekhar Reddy, V. Janardhanam, Chel-Jong Choi, “Microstructural, chemical states and electrical properties of Au/CuO/n-InP heterojunction with a cupric oxide interlayer”, Vacuum, 152, 15-24 (2018)

279. Zagarzusem Khurelbaatar, Chel-Jong Choi, “Graphene/Ge Schottky Junction Based IR Photodetectors”, Solid State Phenomena, 271, 133-137 (2018)

278. P.R. Sekhar Reddy, V. Janardhanam, I. Jyothi, V. Rajagopal Reddy, Jonghan Won, Chel-Jong Choi, “Effect of copper phthalocyanine thickness on surface morphology, optical and electrical properties of Au/CuPc/n-type Si heterojunction diode”, Applied Physics A, 124, 115(10pages) (2018)

277. "Jin-Won Lee, Jiyoon Han, Dong Su Lee, Sukang Bae, Sang Hyun Lee, Seoung-Ki Lee, Byung Joon Moon, Chel-Jong Choi, Gunuk Wang, and Tae-Wook Kim", “2D Single-Crystalline Copper Nanoplates as a Conductive Filler for Electronic Ink Applications”, Small, 14, 1703312(7pages) (2018)

276. Neelakanta Reddy, Venkatareddy Chandragiri, M. Sreedhar, Migyung Cho, jaesool shim, Varra Rajagopal Reddy, Chel-Jong Choi, Dongseob Kim, “Effect of Seed Layers (Al, Ti) on Fe-Doped ZnO Thin Film Nanowires Grown on Si Substrate via Electron Beam Evaporation”, Materials Science in Semiconductor Processing, 71, 296–303 (2017)

275. P. R. Sekhar Reddy, V. Janardhanam, I. Jyothi, Han-Soo Chang, Sung-Nam Lee, Myung Sun Lee, V. Rajagopal Reddy, Chel-Jong Choi, “Microstructural and electrical properties of Al/n-type Si Schottky diodes with Au-CuPc nanocomposite films as interlayer”, Sulerlattices and Microstructures, 111, 506-517 (2017)

274. Munkhsaikhan Zumuukhorol, Zagarzusem Khurelbaatar, Jong-Hee Kim, Hyung-Joong Yun, Jae-Chan Jeong, Sung-Nam Lee, Chel-Jong Choi, “Effect of SiO2 anti-reflection layer on optoelectronic properties of Ge metal-semiconductor-metal (MSM) photodetectors”, Journal of Semiconductor Technology and Science, 17(4), 483-491 (2017)

273. I. Jyothi, Hoon-Ki Lee, V. Janardhanam, Sung-Nam Lee, Chel-Jong Choi, “Double barrier height nature of Ti/p-type strained Si-on-insulator Schottky diode and its low frequency noise characteristics”, Journal of Nanoscience and Nanotechnology, 17, 7107–7114 (2017)

272. V. Manjunath, V. Rajagopal Reddy, P.R. Sekhar Reddy, V. Janardhanam, Chel-Jong Choi, “Electrical and frequency-dependent properties of Au/Sm2O3/n-GaN MIS junction with a high-k rare-earth Sm2O3 as interlayer”, Current Applied Physics, 17(7), 980-988 (2017)

271. No-Won Park, Jay-Young Ahn, Tae-hyun Park, Jung-Hoon Lee, Won-Yong Lee, Kwanghee Cho, Young-Gui Yoon, Chel-Jong Choi, Jin-Seong Park, Sang-Kwon Lee , “Control of phonon transport by formation of Al2O interlayer in Al2O3-ZnO superlattice thin films and their in-plane thermoelectric energy generating performance”, Nanoscale, 9(21), 7027–7036 (2017)

270. V. Rajagopal Reddy, B. Asha, Chel-Jong Choi, “Schottky barrier parameters and structural properties of rapidly annealed Zr Schottky electrode on p-type GaN”, Journal of Semiconductors, 38(6), 064001-1-064001-8 (2017)

269. V. Janardhanam, Jong-Hee Lee, Hyung-Joong Yun, Jonghan Won, Yong-Boo Lee, Sung-Nam Lee, Chel-Jong Choi, “Electrical properties of Cu-germanide Schottky contact to n-type Ge depending on its microstructural evolution driven by rapid thermal annealing”, Thin Solid Films, 632, 23-27 (2017)

268. Jong-Myeong Kwon, Jae-Hong Kim, Soon-Hyung Kang, Cheol-Jong Choi, John Anthuvan Rajesh, Kwang-Soon Ahn, “Facile hydrothermal synthesis of cubic spinel AB2O4 type MnFe2O4 nanocrystallites and their electrochemical performance”, Applied Surface Science, 413, 83–91 (2017)

267. V.Janardhanam Janardhanam; Jonghan Won; Chel-Jong Choi, V. Reddy, “Surface chemical states, electrical and frequency dependent properties of Au/p-Cu2ZnSnS4/n-GaN heterojunction with a CZTS interlayer”, Journal of Colloid and Interface Science, 499, 180-188 (2017)

266. Do Trong Thanh, Kang Bok Ko, Zagarzusem Khurelbaatar, Chel-Jong Choi, Chang-Hee Hong, Tran Viet Cuong, “Transparent and flexible ultraviolet photoconductors based on solution-processed graphene quantum dots on reduced graphene oxide films”, Materials Research Bulletin, 91, 49-53 (2017)

265. C.Venkata Prasad, V. Rajagopal Reddy, Chel-Jong Choi, “Electrical and carrier transport properties of the Au/Y2O3/n-GaN metal-insulator-semiconductor (MIS) diode with rare-earth oxide interlayer”, Applied Physics A, 123(4), 279(10pages) (2017)

264. V. Janardhanam, I. Jyothi, Sim-Hoon Yuk, Chel-Jong choi, Hyung-Joong Yun,Jonghan Won, Won-Gi Hong, Sung-Nam Lee, V. Rajagopal Reddy, “Modification of Schottky barrier properties of Al/p-type Si Schottky rectifiers with graphene-oxide-doped PEDOT:PSS interlayer”, Journal of Vacuum Science & Technology B, 35(2), 021212(6pages) (2017)

263. Woo-Jin Lee, Gye-Choon Park, Chel-Jong Choi, O-Bong Yang, “Optimization of BBr3-Based Co-Diffusion Processes for Bifacial N-Type Solar Cells”, Journal of Nanoscience and Nanotechnology, 17(4), 2682-2684 (2017)

262. K.J. HONG, T.S. JEONG, T.S. KIM, C.J. CHOI, C.J. YOUN, “Spectral Behavior of Bias-Dependent Photocurrent and Photoluminescence in Sputtered ZnO Layers”, Journal of Electronic Materials, 46(1), 425-31 (2017)

261. V. Janardhanam, Chel-Jong Choi, “"Effect of Rapid Thermal Annealing on the Structural Evolution and Electrical Property of Gold Films Deposited on Silicon”, Key Engineering Materials, 730, 97-101 (2017)

260. Munkhsaikhan Zumuukhorol, Zagarzusem Khurelbaatar, Shim-Hoon Yuk, Sung-Nam Lee, Chel-Jong Choi, “Effects of finger dimension on low-frequency noise and optoelectronic properties of Ge metal-semiconductor-metal photodetectors with interdigitated Pt finger electrodes”, Microelectronic Reliability, 69, 60-65 (2017)

259. V.R. Reddy, P.R. Reddy. I.N. Reddy, Chel-Jong Choi, “Microstructural, electrical and carrier transport properties of Au/NiO/n-GaN heterojunction with a nickel oxide interlayer”, RSC Advances, 6, 105761–105770 (2016)

258. V. Janardhanam, I. Jyothi, Shim-Hoon Yuk, Chel-Jong Choi, Sung-Nam Lee, V. Rajagopal Reddy, “Effect of Oxygen Plasma Treatment on the Electrical Characteristics of Pt/n-type Si Schottky Diodes”, Journal of the Korean Physical Society, 69(8), 1321-1327 (2016)

257. "Yeon-Ho Kil, Sim-Hoon Yuk, Joung Hee Kim, Taek Sung Kim, Yong Tae Kim, Chel-Jong Choi, Kyu-Hwan Shim", “The low temperature epitaxy of Ge on Si (100) substrate using two different precursors of GeH4 and Ge2H6”, Solid-State Electronics, 124, 35–41 (2016)

256. P. R. Sekhar Reddy, V. Janardhanam, I. Jyothi, Shim-Hoon Yuk, V. Rajagopal Reddy, Jae-Chan Jeong, Sung-Nam Lee, Chel-Jong Choi, “Modification of Schottky barrier properties of Ti/p-type InP Schottky diode by polyaniline (PANI) organic interlayer”, Journal of Semiconductor Technology and Science, 16(5), 664-674 (2016)

255. I. Jyothi, V. Janardhanam, Jong-Hee Kim, Hyung-Joong Yun, Jae-Chan Jeong, Sung-Nam Lee, Chel-Jong Choi, “Electrical and Structural properties of Au/Yb Schottky contact on p-type GaN as a function of annealing temperature”, Journal of Alloys and Compounds, 688, 875-881 (2016)

254. Sukill Kang, Yeon-Ho Kil, Tae Soo Jeong, Chel-Jong Choi, Kyu-Hwan Shim, Dae-Jung Kim, Yong-Dae Choi, Taek Sung Kim, “Temperature Dependence of the Photocurrent in Ge1−xSnx Layers”, Journal of the Korean Physical Society, 69(2), 207–212 (2016)

253. Hari Krishna Koduru, Lucia Marino, Janardhanam Vallivedu, Chel-Jong Choi, Nicola Scaramuzza, “Microstructural, wetting, and dielectric properties of plasma polymerized polypyrrole thin films”, Journal of Applied Polymer Science, 133(38), 43982 (2016)

252. "Yi Rang Lim, Wooseok Song, Jin Kyu Han, Young Bum Lee, Sung Jun Kim, Sung Myung, Sun Sook Lee, Ki-Seok An, Chel-Jong Choi, Jongsun Lim", “Wafer-Scale, Homogeneous MoS2 Layers on Plastic Substrates for Flexible Visible-Light Photodetectors”, Advanced Materials, 28(25), 5025–5030 (2016)

251. Hoon-Ki Lee, I. Jyothi, V. Janardhanam, Kyu-Hwan Shim, Hyung-Joong Yun, Sung-Nam Lee, Chel-Jong Choi, “Effects of Ta-oxide interlayer on the Schottky barrier parameters of Ni/n-type Ge Schottky barrier diode”, Microelectronic Engineering, 163(1), 26-31 (2016)

250. V. Rajagopal Reddy, B. Asha, Chel-Jong Choi, “Effects of Annealing on Electrical Characteristics and Current Transport Mechanisms of the Y/p-GaN Schottky Diode”, Journal of Electronic Materials, 45(7), 3268-3277 (2016)

249. Yi Rang Lim, Wooseok Song, Young Bum Lee, Seong Ku Kim, Jin Kyu Han, Sung Myung, Sun Sook Lee, Ki-Seok An, Chel-Jong Choi, Jongsun Lim, “"Horizontally-connected ZnO-graphene hybrid films for multifunctional devices”, Applied Surface Science, 379, 238-241 (2016)

248. Heera Kwon, Chel-Jong Choi, Jaehee Cho, “Electrical and optical properties of nickel thin-films fabricated by using oblique-angle deposition”, Journal of the Korean Physical Society, 68(7), 839-841 (2016)

247. Soon-Hyung Kang, Soo-Yong Lee, Jae-Hong Kim, Chel-Jong Choi, Hyunsoo Kim, Kwang-Soon Ahn, “Enhanced Efficiency of Nanoporous-layer-covered TiO2 Nanotube Arrays for Front Illuminated Dye-sensitized Solar Cells”, Journal of Electrochemical Science and Technology, 7(1), 52-57 (2016)

246. Vu Hong Vinh Quy, Jae-Hong Kim, Soon-Hyung Kang, Cheol-Jong Choi, John Anthuvan Rajesh, Kwang-Soon Ahn, “Enhanced electrocatalytic activity of electrodeposited F-doped SnO2/Cu2S electrodes for quantum dot-sensitized solar cells”, Journal of Power Sources, 316, 53-59 (2016)

245. Kyungsun Ryu, Chel-Jong Choi, Ajeet Rohatgi, Young-Woo Ok, “Study of degradation in bulk lifetime of n-type silicon wafer due to oxidation of boron-rich layer”, Current Applied Physics, 16, 497-500 (2016)

244. Zagarzusem Khurelbaatar, Yeon-Ho Kil, Kyu-Hwan Shim, Hyunjin Cho, Myung-Jong Kim, Sung-Nam Lee, Chel-Jong Choi, “Schottky barrier parameters and low frequency noise characteristics of graphene-germanium Schottky Barrier Diode”, Superlattices and Microstructures, 91, 306-312 (2016)

243. Woo-Jin Lee, Chel-Jong Choi, Gye-Choon Park, O-Bong Yang, “Characterization of Boron Diffusion Phenomena According to the Specific Resistivity of N-Type Si Wafer”, Journal of Nanoscience and Nanotechnology, 16(2), 1665-1668 (2016)

242. Dae-Sung Park, Haiyuan Wang, Sepehr K. Vasheghani Farahani, Marc Walker, Akash Bhatnagar, Djelloul Seghier, Chel-Jong Choi, Jie-Hun Kang, Chris McConville, “Surface passivation of semiconducting oxides by self-assembled nanoparticles”, Scientific Reports, "6:18449 DOI:10.1038/srep18449", (2016)

241. Ajay D. Upadhyaya, Young-Woo Ok, Elizabeth Chang, Vijaykumar Upadhyaya, Keeya Madani, Keith Tate, b. Rounsaville, Chel-Jong Choi, V. Chandrasekaran, V. Yelundur, Atul Gupta, and Ajeet Rohatgi, “Ion-Implanted Screen-Printed n-Type Solar Cell With Tunnel Oxide Passivated Back Contact”, IEEE JOURNAL OF PHOTOVOLTAICS, 6(1), 153-158 (2016)

240. R. Padma, G. Nagarajua, Varra Rajagopal Reddy, Chel-Jong Choi, “Effect of annealing temperature on the electrical and structural properties of V/p-GaN Schottky structures”, Thin Solid Films, 598, 236-242 (2016)

239. Kyungsun Ryu, Chel-Jong Choi, Hyomin Park, Donghwan Kim, Ajeet Rohatgi, Young-Woo Ok, “Fundamental understanding, impact, and removal of boron-rich layer on n-type silicon solar cells”, Solar Energy Materials and Solar Cells, 146, 58-62 (2016)

238. "I. Jyothi, V. Janardhanam, Jun Yeon Hwang, Won-Ki Lee, Yun Chang Park, Hyon Chol Kang, Chel-Jong Choi", “Microstructural and electrical properties of Cu-germanide contact to p-type Ge wafer”, Journal of Alloys and Compounds, 655, 198-202 (2016)

237. Ji-Yeon Park, Keun Man Song, Yo-Sep Min, Chel-Jong Choi, Yoon Seok Kim, Sung-Nam Lee, “Nanostructures of Indium Gallium Nitride Crystal Grown on Carbon Nanotubes”, Scientific Reports, "5:16612doi:10.1038/srep16612", (2015)

236. Zagarzusem Khurelbaatar, Yeon-Ho Kil, Taek Sung Kim, Kyu-Hwan Shim, Hyobong Hong, Chel-Jong Choi, “Optoelectronic Characterization of Infrared Photodetector Fabricated on Ge-on-Si Substrate”, "Journal of Nanoscience and Nanotechnology", 15(10), 7832-7835 (2015)

235. Zagarzusem Khurelbaatar, Min-Sung Kang, Kyu-Hwan Shim, Hyung-Joong Yun, Jouhan Lee, Hyobong Hong, Sung-Yong Chang, Sung-Nam Lee, Chel-Jong Choi, “Temperature Dependent Current-Voltage Characteristics of Au/n-type Ge Schottky Barrier Diodes with Graphene Interlayer”, Journal of Alloys and Compounds, 650, 658–663 (2015)

234. L. Dasaradha Rao, K. Shanthi Latha, V. Rajagopal Reddy, Chel-Jong Choi, “Effect of thermal annealing on the electrical and structural properties of Au/Y/p-type InP Schottky structure”, Vacuum, 119, 276-283 (2015)

233. I. Jyothi, V. Janardhanam, Hyobong Hong, Chel-Jong Choi, “Current-voltage and capacitance-voltage characteristics of Al Schottky contacts to strained Si-on-insulator in the wide temperature range”, Materials Science in Semiconductor Processing, 39, 390-399 (2015)

232. R. Padma, K. Shanthi Latha, V. Rajagopal Reddy, Chel-Jong Choi, “Rapid thermal annealing effects on the electrical and structural properties of Ru/V/n-InP Schottky barrier diode”, Superlattices and Microstructures, 83, 48-60 (2015)

231. Daoheung Bouangeune, Kyu-Hwan Shim, See-Jong Leem, Chel-Jong Choi, “Investigation of the Surge Immunity of Monocrystalline Silicon Photovoltaic Modules Using Dark Current-Voltage and 1/f Noise Power Spectrum Density Characteristics”, Journal of Computational and Theoretical Nanoscience, 12(5), 751-755 (2015)

230. Hyung-Joong Yun, Yi-Rang Lim, Jouhahn Lee, Chel-Jong Choi, “Structural and Electrical Properties of Ni-germanosilicides Formed Using Pulsed KrF Laser Annealing”, Journal of Computational and Theoretical Nanoscience, 12(5), 712-718 (2015)

229. Zagarzusem Khurelbaatar, Kyu-Hwan Shim, Hyunjin Cho, Myung-Jong Kim, Young-Tae Kim, Chel-Jong Choi, “Temperature Dependent Current Transport Mechanism in Graphene/Germanium Schottky Barrier Diode”, Journal of Semiconductor Technology and Science, 15(1), 7-15 (2015)

228. V. Janardhanam, Hyung-Joong Yun, I. Jyothi, Jouhahn Lee, Hyobong Hong, V. Rajagopal Reddy, Chel-Jong Choi, “Energy-level alignment and electrical properties of Al/p-type Si Schottky diodes with sorbitol-doped PEDOT:PSS as an organic interlayer”, Journal of Alloys and Compounds, 637, 84-89 (2015)

227. Zagarzusem Khurelbaatar, Kyu-Hwan Shim, Jaehee Cho, Hyobong Hong, V. Rajagopal Reddy, Chel-Jong Choi, “Temperature Dependent Current-Voltage and Capacitance-Voltage Characteristics of Au/n-type Si Schottky Barrier Diode Modified Using PEDOT:PSS Interlayer”, Materials Transactions, 56(1), 10-16 (2015)

226. V. Rajagopal reddy, V. Manjunath, V. Janardhanam, Chang-Hyun Leem, Chel-Jong Choi, “Double Gaussian Distribution of Barrier Heights, Interface States and Current Transport Mechanisms in Au/Bi0.5Na0.5TiO3-BaTiO3/n-GaN MIS Structure”, Journal of Electronic Materials, 44(1), 549-557 (2015)

225. V. Rajagopal Reddy, D. Sri Silpa, V. Janardhanam, Hyung-Joong Yun, Chel-Jong Choi, “Rapid Thermal Annealing Effects on the Electrical, Structural and Morphological Properties of Yb/p-type InP Schottky Structure”, Electronic Materials Letters, 11(1), 73-81 (2015)

224. Daoheung Bouangeune, Deok-Ho Cho, Hyung-Joong Yun, Kyu-Hwan Shim, Chel-Jong Choi, “Transmission Line Pulse Properties For A Bidirectional Transient Voltage Suppression Diode Developed Using The Low-Temperature Epitaxy and Process Technology”, Electronic Materials Letters, 11(1), 88-92 (2015)

223. I. Jyothi, V. Janardhanam, Yi-Rang Lim, V. Rajagopal Reddy, Kwang-Soon Ahn, Chel-Jong Choi, “Effect of copper phthalocyanine (CuPc) interlayer on the electrical characteristics of Au/n-GaN Schottky rectifier”, Materials Science in Semiconductor Processing, 30, 420-428 (2015)

222. Beo Deul Ryu, Min Han, Nam Han, Young Jae Park, Kang Bok Ko, Tae Hyun Lim, S. Chandramohan, Tran Viet Cuong, Chel-Jong Choi, Jaehee Cho, and Chang-Hee Hong, “"Fabrication and Characteristics of GaN-Based Light-Emitting Diodes with a Reduced Graphene Oxide Current-Spreading Layer”, ACS Applied Materials & Interfaces, 6, 22451-22456 (2014)

221. Dae-Sung Park, Sepehr K. Vasheghani Farahani, Marc Walker, James J. Mudd, Haiyuan Wang, Aleksander Krupski, Einar B. Thorsteinsson, Djelloul Seghier, Chel-Jong Choi, Chang-Ju Youn, and Chris F. McConville, “Recrystallization of Highly-Mismatched BexZn1−xO Alloys: Formation of a Degenerate Interface”, ACS Applied Materials & Interfaces, 6(21), 18758–18768 (2014)

220. Daoheung Bouangeune, Sengchanh Vilathong, Deok-Ho Cho, Kyu-Hwan Shim, See-Jong Leem, Chel-Jong Choi, “"Novel Punch-through Diode Triggered SCR for Low Voltage ESD Protection Applications”, Journal of Semiconductor Technology and Science, 14(6), 797-801 (2014)

219. "Min-Ah Park, Soo-Yong Lee, Jae-Hong Kim, Soon-Hyung Kang, Hyunsoo Kim, Chel-Jong Choi, Kwang-Soon Ahn", “"CdSe quantum dot-sensitized, nanoporous p-type NiO photocathodes for quantum dot-sensitized solar cells“, Molecular Crystals and Liquid Crystals, 598(1), 154-162 (2014)

218. "Sung Woo Jung, Soo-Yong Lee, Min-Ahn Park, Jae-Hong Kim, Soon-Hyung Kang, Hyunsoo Kim, Chel-Jong Choi, Kwang-Soon Ahna, “Enhanced light harvesting and electron lifetime of front side-illuminated CdSe quantum dot-assembled TiO2 nanotube arrays for quantum dot-sensitized solar cells”, Molecular Crystals and Liquid Crystals, 598(1), 144-153 (2014)

217. Daoheung Bouangeune, Yeon-Ho Kil, Jaehee Jo, Kyu-Hwan Shim, Chel-Jong Choi, Sang-Sik Choi, Deok-Ho Cho, “Transient Voltage Suppressor Diode Designed for the Protection of High Brightness GaN-Based LEDs from Various Electrostatic Discharge Shocks”, Journal of the Korean Physical Society, 65(7), 1106-1112 (2014)

216. Daoheung Bouangeune, Ye-Ji Lee, Deok-Ho Cho, Kyu-Hwan Shim, Chel-Jong Choi, “Reverse Current Conduction Mechanism of Transient Voltage Suppressor Diode under Electrostatic Discharge Stress”, Materials Transactions, 55(11), 1733-1737 (2014)

215. Taeho Moon, Jong-Won Yoon, Won-Yong Lee, Chel-Jong Choi, “Electric Transport through Perovskite La(Fe,Ga)O3 Nanowires Formed by Electrospinning”, Applied Physics Letters, 105, 153103(5pp) (2014)

214. I. Jyothi, V. Janardhanam, V. Rajagopal Reddy, Chel-Jong Choi, “Modified electrical characteristics of Pt/n-type Ge Schottky diode with a pyronine-B interlayer”, Superlattice and Microstructure, 75, 806–817 (2014)

213. Hyobong Hong, Hans-Joachim Krause, Inhyun Nam, Chel-Jong Choi, Sungwoong Shin, “Magnetic Immunoassay Based on Frequency Mixing Magnetic Detection and Magnetic Particles of Different Magnetic Properties”, Analytical Methods, 6, 8055-8058 (2014)

212. Daoheung Bouangeune, Sang-Sig Choi, Chel-Jong Choi, Yeon-Ho Kil, Jeon Wook Yang, Deok-Ho Cho, Kyu-Hwan Shim, “Correlation of Reverse Leakage Current Conduction Mechanism and Electrostatic Discharge Robustness of Transient Voltage Suppression Diode”, Electronic Materials Letters, 10(5), 893-898 (2014)

211. Daoheung Bouangeune, Sang-Sik Choi, Deok-Ho Cho, Kyu-Hwan Shim, Sung-Yong Chang, See-Jong Leem, Chel-Jong Choi, “Effects of Electrostatic Discharge Stress on Current-Voltage and Reverse Recovery Time of Fast Power Diode”, Journal of Semiconductor Technology and Science, 14(5), 495-502 (2014)

210. Hyeon-Jin Song, Kwang-Soon Ahn, Chel-Jong Choi, “Microstructural and chemical properties of ZnO films formed using electrodeposition”, Journal of Nanoscience and Nanotechnology, 14(12), 9584-9588 (2014)

209. Yeung-Pil Yoon, Jae-Hong Kim, Soon-Hyung Kang, Hyunsoo Kim, Chel-Jong Choi, Kyong-Kook Kim, Kwang-Soon Ahn, “Enhanced electrocatalytic activity of the Au-electrodeposited Pt nanoparticles-coated conducting oxide for the quantum dot-sensitized solar cells”, Applied Physics Letters, 105, 083116 (5pages) (2014)

208. Min-Ah Park, Soo-Yong Lee, Jae-Hong Kim, Soon-Hyung Kang, Hyunsoo Kim, Chel-Jong Choi, Kwang-Soon Ahn, “Enhanced photoelectrochemical response of CdSe quantum dot-sensitized p-type NiO photocathodes”, Physica Status Solidi A, 211(8), 1868-1872 (2014)

207. V. Rajagopal Reddy, V. Manjunath, V. Janardhanam, Yeon-Ho Kil, Chel-Jong Choi, “Electrical Properties and Current Transport Mechanisms of Au/n-GaN Schottky Structure with Solution Processed High-k BaTiO3 as an Interlayer”, Journal of Electronics Materials, 43(9), 3499-3507 (2014)

206. I. Jyothi, V. Janardhanam, Min-Sung Kang, Hyung-Joong Yun, Jouhahn Lee, Chel-Jong Choi, “Carrier transport mechanism of Er-silicide Schottky contacts to strained silicon-on insulator and silicon-on insulator”, Journal of Nanoscience and Nanotechnology, 14(11), 8176-8181 (2014)

205. Chul Huh, bong Kyu Kim, Chang-Geun Ahn, Chel-Jong Choi, Sang-Hyeob Kim, “Enhancement in light emission and electrical efficiencies of a silicon nanocrystal light-emitting diode by indium tin oxide nanowires”, Applied Physics Letters, 105, 031108(4pages) (2014)

204. Sungeun Park, Jooyoung Song, Sung Ju Tark, Young Do Kim, Chel-jong Choi, Soonwoo Kwon, Sewang Yoon, Chang-Sik Son, Donghwan Kim, “Investigation of Al back contacts and BSF formation by in situ TEM for silicon solar cells”, Progress in Photovoltacis, 22, 863–869 (2014)

203. Joo-Young Jeong, V. Janardhanam, Hyung-Joong Yun, Ji-Hyun Lee, Jae-Yeon Kim, Kyu-Hwan Shim, Chel-Jong Choi, “Carrier Transport Mechanism of Ni/Ag Schottky Contacts to n-type GaN Grown on Si (111) Substrate”, Japanese Journal of Applied Physics, 53, 08NH01 (2014)

202. Zagarzusem Khurelbaatar, Yeon-Ho Kil, Hyung-Joong Yun, Kyu-Hwan Shim, Keun-Soo Kim, Sang-Kwon Lee, Chel-Jong Choi, “Modification of Schottky barrier properties of Au/n-type Ge Schottky barrier diode using monolayer graphene interlayer”, Journal of Alloys and Compounds, 614, 323-329 (2014)

201. Hyun Uk Lee,Young-Chul Lee, Soon Chang Lee, So Young Park, byoungchul Son, Jae Won Lee, Chang-Hyun Lim, Chel-Jong Choi, Moon-Hee Choi, So Yeun Lee, You-Kwan Oh, Jouhahn Lee, “Visible-light-responsive bicrystalline (anatase/brookite) nanoporous nitrogen-doped TiO2 photocatalysts by plasma treatment”, Chemical Engineering Journal, 254, 268-275 (2014)

200. Nae-Man Park, Chel-Jong Choi, “Growth of silicon nanowires in aqueous solution under atmospheric”, Nano Research, 7(6), 898-902 (2014)

199. "Yeon-Ho Kil, Jong-Han Yang, Joung Hee Kim, Joo Yong Jeong, Sukill Kang, Tae Soo Jeong, Chel-Jong Choi, Taek Sung Kim, Kyu-Hwan Shim", “Electroluminescence of n-Ge/i-Ge/p-Si Heterojunction PIN LEDs”, Journal of the Korean Physical Society, 64(10), 1430-1436 (2014)

198. V.Rajagopal Reddy, D.Sri Silpa, Hyung-Joong Yun, Chel-Jong Choi, “Electrical and structural properties of tungsten Schottky contacts to p-type InP at different annealing temperatures”, Superlattice and Microstructure, 71, 134-146 (2014)

197. V. Janardhanam, I. Jyothi, Ji-Hyun Lee, Jae-Yeon Kim, V. Rajagopal Reddy, Chel-Jong Choi, “Electrical properties and carrier transport mechanism of Au/n-GaN Schottky contact modified using a copper pthalocyanine (CuPc) interlayer”, Materials Transactions, 55(5), 758-762 (2014)

196. Hyung-Joong Yun, Hyobong Hong, Jouhahn Lee, Chel-Jong Choi, “Chemical and structural properties of poly-ethyleneimine film with different concentrations coated on a SiO2 substrate”, Materials Transactions, 55(5), 801-805 (2014)

195. V. Rajagopal Reddy, V. Janardhanam, Jin-Woo Ju, Hyobong Hong, Chel-Jong Choi, “Electrical transport properties of Au/Bi0.5Na0.5TiO3-BaTiO3/n-GaN metal-insulator-semiconductor (MIS) devices”, Semiconductor Science and Technology, 29, 075001(6pp) (2014)

194. Hyun-Duk Yang, V. Janardhanam, Kyu-Hwan Shim, Chel-Jong Choi, “Effects of Interdigitated Platinum Finger Geometry on Spectral Response Characteristics of Germanium Metal-Semiconductor-Metal Photodetectors”, Journal of Nanoscience and Nanotechnology, 14, 7683-7687 (2014)

193. Dae-Sung Park, A. Krupski, A. M. Sanchez, Chel-Jong Choi, Min-Su Yi, Hyun-Hwi Lee, S. R. C. McMitchell, C. F. McConville, “Optimal growth and thermal stability of crystalline Be0.25Zn0.75O alloy films on Al2O3(0001)”, Applied Physics Letters, 104, 141902 (2014)

192. Varra Rajagopal Reddy, V. Janardhanam, Min-Sung Kang, Chel-Jong Choi, “Influence of annealing effects on the electrical and microstructural properties of Se Schottky contacts on n-type GaN”, Journal of Materials Science: Materials in Electronics, 25, 2379-2386 (2014)

191. Yeon-Ho Kil, Hyeon Deok Yang, Jong-Han Yang, Sukill Kang, Tae Soo Jeong, Chel-Jong Choi, Taek Sung Kim, Kyu-Hwan Shim, “Effect of phosphorus dopant number on n-type Ge layer growth”, Journal of the Korean Physical Society, 64(5), 715-721 (2014)

190. Nam Han, Young Jae Park, Min Han, beo Deul Ryu, Kang Bok Ko, S. Chandramohan, Chel-Jong Choi, Tran Viet Cuong, Chang-Hee Hong, “Threading dislocation reduction in epitaxial GaN using V-groove patterned sapphire substrate with embedded silica nanospheres”, Materials Letters, 123, 97-100 (2014)

189. Daoheung Bouangeune, Sang-Sig Choi, Chel-Jong Choi, Deok-Ho Cho, Kyu-Hwan Shim, “Bidirectional Transient Voltage Suppression Diodes for the Protection of High Speed Data Line from Electrostatic Discharge Shocks”, Journal of Semiconductor Technology and Science, 14(1), 1-7 (2014)

188. Yeon-Ho Kil, Hyeon Deok Yang, Jong-Han Yang, Sukill Kang, Tae Soo Jeong, Chel-Jong Choi, Taek Sung Kim, Kyu-Hwan Shim, Dae-Jung Kim, “Doping-concentration Dependence of a Boron-doped p-type Ge layer Grown on a Si (100) Substrates by Using RTCVD”, Journal of the Korean Physical Society, 64(3), 443-450 (2014)

187. Dae-Sung Park, James J. Mudd, Marc Walker, Aleksander Krupski, Djelloul Seghier, Nessa Fereshteh Saniee, Chel-Jong Choi, Chang-Ju Youn, Sean R. C. McMitchella and Chris F. McConville, “Pinning effect on the band gap modulation of crystalline BexZn1−xO alloy films grown on Al2O3(0001)”, CrystEngComm, 16, 2136-2143 (2014)

186. Hyeon Deok Yang, Yeon-Ho Kil, Jong-Han Yang, Sukill Kang, Tae Soo Jeong, Chel-Jong Choi, Taek Sung Kim, Kyu-Hwan Shim, “Characterization of n-Ge/i-Ge/p-Si PIN photo-diode”, Materials Science in Semiconductor Processing, 22, 37-43 (2014)

185. David S. Meyaard, Ming Ma, E. Fred Schubert, Chel-Jong Choi, Jaehee Cho, Morgan Evans, “Mesa-Free III-V Nitride Light-Emitting Diodes with Flat Surface”, ECS Solid State Letters, 3(4), Q17-Q19 (2014)

184. Yeon-Ho Kil, Jong-Han Yang, Sukill Kang, Dae-Jung Kim, Tae Soo Jeong, Chel-Jong Choi, Taek Sung Kim, Kyu-Hwan Shim, “Growth of a Ge layer on 8 in. Si (100) substrates by rapid thermal chemical vapor deposition”, Materials Science in Semiconductor Processing, 21, 58–65 (2014)

183. V.Rajagopal Reddy, V.Janardhanam, Chang-Hyun Leem, Chel-Jong Choi, “Electrical properties and the double Gaussian distribution of inhomogeneous barrier heights in Se/n-GaN Schottky barrier diode”, Superlattice and Microstructure, 67, 242-255 (2014)

182. Hyobong Hong, Hans-Joachim Krause, Inhyun Nam, Cheljong Choi, Sungwoong Shin, “Magnetic particle imaging with a planar frequency mixing magnetic detection scanner”, Review of Scienctific Instruments, 85, 013705 (2014)

181. Yeon-Ho Kil, Jong-Han Yang, Zagarzusem Khurelbaatar, Sukill Kang, Tae Soo Jeong, Chel-Jong Choi, Taek Sung Kim, Kyu-Hwan Shim, “Electroluminescence of p-Ge/i-Ge/n-Si Hetero Junction PIN LEDs”, Journal of the Korean Physical Society, 64(1), 98-103 (2014)

180. Hyeon Deok Yang,Yeon-Ho Kil, Jong-Han Yang, Sukil lKang, Tae Soo Jeong, Chel-Jong Choi, Taek Sung Kim, Kyu-HwanShim, “Fabrication of PIN photo-diode from p-Ge/i-Ge/n-Si hetero junction structure”, Materials Science in Semiconductor Processing, 17, 74-80 (2014)

179. Yeon-Ho Kil, Hyeon Deok Yang, Jong-Han Yang, Sukill Kang,Tae Soo Jeong, Chel-Jong Choi, Taek Sung Kim, Kyu-Hwan Shim, “"Optical properties of hybrid Si1-xGex/Si quantum dot/quantum well structures grown on Si by RPCVD dot/quantumwellstructuresgrownonSibyRPCVD”, Materials Science in Semiconductor Processing, 17, 178-183 (2014)

178. V.Rajagopal Reddy, V. Janardhanam, Jin-Woo Ju, Hyung-Joong Yun, Chel-Jong Choi, “Electronic parameters and carrier transport mechanism of high-barrier Se Schottky contacts to n-type GaN”, Solid State Communications, 179, 34–38 (2014)

177. L. D Rao, V. R Reddy, V. Janardhanam, Min-Sung Kang, byoung-Chul Son, Chel-Jong Choi, “Electrical and structural properties of rapidly annealed rare-earth metal Er Schottky contacts on p-type InP”, Superlattice and Microstructure, 65, 206–218 (2014)

176. Sung Woo Jung, Min-Ah Park, Soo-Yong Lee, Jae-Hong Kim, Kwang-Soon Ahn, Myeong-Soo Seo, Hyunsoo Kim Chel-Jong Choi, “Post-annealing of The CdS/ZnS-assembled TiO2 Films for The Photoelectrochemical Solar Cells”, Journal of the Korean Physical Society, 63(11), 2209-2214 (2013)

175. S. Kim, C.-J. Choi, H. Kim, “Carrier transport mechanism of ohmic contacts to AlGaN/GaN heterostructures analysed by parallel network model”, Electronics Letters, 49(8), 561-562 (2013)

174. Tae Hoon Seo, GangU Shin, bo Kyoung Kim, Chel-Jong Choi, Changhyup Lee, Myung Jong Kim, Eun-Kyung Suh, “Enhancement of light output power in ultraviolet light emitting diodes using graphene film on self-assembled Au nanocluster by agglomeration process”, Jouranl of Applied Physics, 114, 223105 (2013)

173. V.Rajagopal Reddy, L.Dasaradha Rao, V. Janardhanam, Min-Sung Kang, Chel-Jong Choi, “Electrical Properties and Interface States of Rare-Earth Metal Ytterbium Schottky Contacts to p-Type InP”, Materials Transactions, 54(12), 2173-2179 (2013)

172. Daoheung Bouangeune, Yeon-Ho Kil, Sang-Sik Choi, Deok-Ho Cho, Kyu-Hwan Shim, Chel-Jong Choi, “Effects of Electrostatic Discharge Stress on Electrical Properties of Bidirectional TVS Zener Diode with abrupt junctions”, Materials Transactions, 54(11), 2125-2130 (2013)

171. Soo-Yong Lee, Min-Ah Park, Jae-Hong Kim, Hyunsoo Kim, Chel-Jong Choi, Do-Kyung Lee,c Kwang-Soon Ahn, “Enhanced electrocatalytic activity of the annealed Cu2-xS counter electrode for quantum dot-sensitized solar cells”, Journal of The Electrochemical Society, 160(11), H847-H851 (2013)

170. V. Janardhanam, Hyung-Joong Yun, Jouhan Lee, V. Rajagopal Reddy, Hyobong Hong, Kwang-Soon Ahn, Chel-Jong Choi, “Depinning of the Fermi-level at the Ge Schottky interface through Se treatment”, Scripta Materialia, 69, 809–811 (2013)

169. V. Janardhanam, I. Jyothi, Kwang-Soon Ahn, Chel-Jong Choi, “Temperature-Dependent Current-Voltage Characteristics of Se Schottky Contact to N-type Ge”, Thin Solid Films, 546, 63-68 (2013)

168. Yong Seok Lee, Hun Kim, Tae Hoon Seo, Ah Hyun Park, Seul Be Lee, Sang Jo Chung, Chel-Jong Choi, Eun-Kyung Suh, “"Structural and Optical Properties of Epitaxially Laterally Overgrown a-Plane GaN Epilayer on SiO2 Stripe Patterned r-Plane Sapphire”, Electronic Materials Letters, 9(5), 587-592 (2013)

167. I. Jyothi, Hyun-Deok Yang, Kyu-Hwan Shim, V. Janardhanam, Seung-Min Kang, Chel-Jong Choi, “Temperature dependency of Schottky barrier parameters of Ti Schottky contacts to Si-on-insulator”, Materials Transactions, 54(9), 1655-1660 (2013)

166. Chel-Jong Choi, “In-situ Detection of Magnetic Beads Using Si Metal-Semiconductor-Metal Photodetectors”, Journal of Convergence Information Technology, 8(12), 310-315 (2013)

165. Sung Woo Jung,Min-A. Park, Jae-Hong Kim, Hyunsoo Kim, Chel-Jong Choi, Soon Hyung Kang, Kwang-Soon Ahn, “Two-step annealed CdS/CdSe co-sensitizers for quantum dot-sensitized solar cells”, Current Applied Physics, 13, 1532-1536 (2013)

164. V. Janardhanam, Yeon-Ho Kil, Kyu-Hwan Shim, Chel-Jong Choi, “Effect of rapid thermal annealing on the electrical and structural properties of Se Schottky contacts to n-type Si”, Materials Transactions, 54(7), 1067-1072 (2013)

163. Nam Han, Tran Viet Cuong, Min Han, beo Deul Ryu, S. Chandramohan, Jong Bae Park, Ji Hye Kang, Young-Jae Park, Kang Bok Ko, Hee Yun Kim, Hyun Kyu Kim, Jae Hyoung Ryu, Y. S. Katharria, Chel-Jong Choi, Chang-Hee Hong, “Improved heat dissipation in gallium nitride light-emitting diodes with embedded graphene oxide pattern”, Nature Communications, 4:1452 doi:10.1038/ncomms2448, (2013)

162. A. Ashok Kumar, L. Dasaradha Rao, V. Rajagopal Reddy, Chel-Jong Choi, “Analysis of electrical characteristics of Er/p-InP Schottky diode at high temperature range”, Current Applied Physics, 13(6), 975-980 (2013)

161. Dongsun Kim, Chel-Jong Choi, Hyungsun Kim, “Effects of the Physical Properties of Bismate Frits on Contact Formation Between Ag Electrodes and Si Emitter in Si Solar Cells”, Journal of Electronic Materials, 42(4), 639-645 (2013)

160. Hyung-Joong Yun, Moongyu Jang, Sung-Jin Choi, Kwang-Soon Ahn, Chel-Jong Choi, “Nanometer Scale P-type Schottky Barrier Metal-Oxide-Semiconductor Field-Effect Transistors Using Platinum Silicidation Through Oxide Technique Combined with Two-Step Annealing Process”, Journal of Alloys and Compounds, 563, 108-112 (2013)

159. I. Jyothi, Min-Woo Seo, V. Janardhanam, Kyu-Hwan Shim, Young-Boo Lee, Kwang-Soon Ahn, Chel-Jong Choi, “Temperature-Dependent Current-Voltage Characteristics of Er-Silicide Schottky Contacts to Strained Si-on-Insulator”, Journal of Alloys and Compounds, 556, 252-258 (2013)

158. A. Ashok Kumar, V. Rajagopal Reddy, V. Janardhanam, Hyun-Deok Yang, Hyung-Joong Yun, Chel-Jong Choi, “Electrical Properties of Pt/n-Type Ge Schottky Contact with PEDOT:PSS Interlayer”, Journal of Alloys and Compounds, 549, 18-21 (2013)

157. Tae-Youb Kim, Chul Huh, Nae-Man Park, Chel-Jong Choi, Maki Suemitsu, “In-situ grown hexagonal silicon nanocrystals in silicon-carbide-based films”, Nanoscale Research Letters, 7, 634-638 (2012)

156. V.Rajagopal Reddy, R.Padma, M.Siva Pratap Reddy, Chel-Jong Choi, “Annealing effects on electrical, structural and surface morphological properties of Ir/n-InGaN Schottky structure”, Physica Status Solidi (a), 209(10), 2027–2033 (2012)

155. Kyung-Won Moon, A. Ashok Kumar, Young-Boo Lee, Yang-Kyu Park, Chel-Jong Choi, “Microstructural and chemical properties of Cu-In alloys formed using co-electrodeposition”, Surface and Interface Analysis, 44, 1418-1422 (2012)

154. S.V. Jagadeesh Chandra, Woong-Ki Hong, Jin-Sung Kim, Hyobong Hong, Chel-Jong Choi, “Effects of post-metallization annealing on the effective metal work function of platinum gate electrode in germanium metal-oxide-semiconductor with HfO2 film”, Surface and Interface Analysis, 44, 1436–1439 (2012)

153. Jin-Sung Kim, Hyung-Joong Yun, Min-Woo Seo, V. Janardhanam, Kwang-Soon Ahn, Chel-Jong Choi, “Effects of the flow rate of O2 annealing ambient on structural and electrical properties of N+/P emitter junctions formed using screen printed phosphorus diffusion”, Surface and Interface Analysis, 44, 1440–1443 (2012)

152. Zhixin Wan, Yinsheng He, Keesam Shin, Cheljong Choi, Eunkyung Suh, “Microstructural Characteristization of InGaN/GaN Epitaxial Layers with Pt Nanoclusters Grown by Using MOCVD on c-plane Sapphire Substrates”, Journal of the Korean Physical Society, 61(8), 1283-1286 (2012)

151. Soumen Das, Daan Liu, Vallivedu Janardhanam, Chel-Jong Choi, Yoon-Bong Hahn, “Stoichiometry-controlled growth of BaxSr12xTiO3 thin films and their electrical behavior in heterojunction assemblies”, RSC Advances, 2, 10255–10261 (2012)

150. Jeong-Hyun Park, Jae-Hong Kim, Chel-Jong Choi, Hyunsoo Kim, Kwang-Soon Ahn, “Influence of TiCl4 post-treatment on TiO2 nanotube arrays for dye-sensitized solar cells”, Molecular Crystals and Liquid Crystals, 567, 19-27 (2012)

149. Jeong-Hyun Park, Jae-Hong Kim, Hyunsoo Kim, Chel-Jong Choi, Kwang-Soon Ahn, “Effects of TiCl4 Surface Treatment on Photoelectrochemical Response of TiO2 Nanotube Arrays”, Molecular Crystals and Liquid Crystals, 568, 192-197 (2012)

148. Hyobong Hong, Yang-Kyu Park, Jae-Yeon Kim, Kibong Song, Chel-Jong Choi, “Label-free and real-time immunodetection of the avian influenza A hemagglutinin peptide using a silicon field-effect transistor fabricated by a nickel self-aligned silicide process”, Materials Transactions, 53(9), 1633-1637 (2012)

147. Kyungsun Ryu, Ajay Upadhyaya, Ajeet Rohatgi, Hyun-Jin Song, Chel-Jong Choi, Young-Woo Ok, “Chemical Etching of Boron-Rich Layer and Its Impact on High Efficiency n-Type Solar Cells”, Applied Physics Letters, 101, 073902(3pages) (2012)

146. Hyobong Hong, Hans-Joachim Krause, Kibong Song, Chel-Jong Choi, “In situ analysis of free radials from the photodecomposition of hydrogen peroxide using a frequency-mixing magnetic detector”, Applied Physics Letters, 101, 054105(3pages) (2012)

145. Kyungwon Moon, Young-Boo Lee, Kwang-Soon Ahn, Chel-Jong Choi, “Formation of CuInSe2 absorber layers formed using co-electrodeposition combined with selenization”, Journal of Nanoscience and nanotechnology, 12(7), 5558-5563 (2012)

144. Jin-Sung Kim, Min-Woo Seo, Kwang-Soon Ahn, Chel-Jong Choi, “Reflow of phosphorous silicate glass layer formed on textured Si surface in crystalline Si solar cells”, Journal of Nanoscience and nanotechnology, 12(7), 5700-5703 (2012)

143. Sung Woo Jung, Jae-Hong Kim, Hyunsoo Kim, Chel-Jong Choi, Kwang-Soon Ahn, “ZnS overlayer on in situ chemical bath deposited CdS quantum dot-assembled TiO2 films for quantum dot-sensitized solar cells”, Current Applied Physics, 12, 1459-1464 (2012)

142. V. Rajagopal Reddy, M. Siva Pratap Reddy, A. Ashok Kumar, Chel-Jong Choi, “Effect of annealing temperature on electrical properties of Au/polyvinyl alcohol/n-InP Schottky barrier structure”, Thin Solid Films, 520(17), 5715-5721 (2012)

141. V. Janardhanam, Yang-Kyu Park, Hyung-Joong Yun, Kwang-Soon Ahn, Chel-Jong Choi, “Conduction mechanism of Se Schottky contact to n-type Ge”, IEEE Electron Device Letters, 33(7), 949-951 (2012)

140. V. Janardhanam, Chel-Jong Choi, Hoon-Ki Lee, Yeon-Ho Kil, Kyu-Hwan Shim, Kwang-Soon Ahn, “Temperature-Dependent Current-Voltage Characteristics and Reverse Leakage Conduction Mechanism of Pt/n-type Si0.85Ge0.15 Schottky Rectifiers”, Journal of the Korean Physical Society, 60(10), 1498-1503 (2012)

139. V. Janardhanam, Yang-Kyu Pakr, Kwang-Soon Ahn, Chel-Jong Choi, “Carrier transport mechanism of Se/n-type Si Schottky diodes”, Journal of Alloys and Compounds, 534, 37-41 (2012)

138. Chul Huh, Chel-Jong Choi, Wanjoong Kim, bong Kyu Kim, byoung-Jun Park, Eun-Hye Jang, Sang-Hyeob Kim, Gun Yong Sung, “Enhancement in light emission efficiency of Si nanocrystal light-emitting diodes by a surface plasmon coupling”, Applied Physics Letters, 100, 181108(5pages) (2012)

137. S.V. Jagadeesh Chandra, E. Fortunato, R. Martins, Chel Jong Choi, “Modulations in effective work function of platinum gate electrode in metal-oxide-semiconductor devices”, Thin Solid Films, 520, 4556–4558 (2012)

136. Sang-Yeop An, Jeong-Hyun Park, Jae-Hong Kim, Chel-Jong Choi, Hyunsoo Kim, Kwang-Soon Ahn, “Enhanced Electron Transport in Mesoporous TiO2 Films Modified by Sol-Gel Necking for Dye-Sensitized Solar Cells”, Journal of Nanoscience and nanotechnology, 12, 2309-2312 (2012)

135. Deok-Won Seo, Gil-Sung Kim, Chan-Yang Lee, Seung-Yong Lee, Jung-Hwan Hyung, Chel-Jong Choi, Sang-Kwon Lee, “The size and diffusion effect of gold on silicon nanowire sidewall faceting”, Journal of Applied Physics, 111, 034301(7pages) (2012)

134. V.Lakshmi Devi, I.Jyothi, V.Rajagopal Reddy, Chel-Jong Choi, “Influence of annealing on structural and electrical properties of double metal structure Ru/Cu contacts on n-type InP”, Physica Status Solidi (a), 209(1), 105-112 (2012)

133. A. Ashok Kumar, V. Rajagopal Reddy, V. Janardhanam, Min-Woo Seo, Kyu-Sang Shin, Hyobong Hong, Chel-Jong Choi, “Electrical properties of Pt/n-Ge Schottky contact modified using copper phthalocyanine (CuPc) interlayer”, Journal of the Electrochemical Society, 159(1), H33-H37 (2012)

132. S. Sankar Naik, V. Rajagopal Reddy, Chel-Jong Choi, Jong-Seong Bae, “Electrical and structural properties of Pd/V/n-type InP (111) Schottky structure as a function of annealing temperature”, Surface and Interface Analysis, 44(1), 98-104 (2012)

131. S.V. Jagadeesh Chandra, Jin-Sung Kim, Kyung-Won Moon, Chel-Jong Choi, “Effect of post metallization annealing on structural and electrical properties of Ge metal-oxide-semiconductor (MOS) capacitors with Pt/HfO2 gate stack”, Microelectronic Engineering, 89, 10-14 (2012)

130. V. Janardhanam, Jin-Sung Kim, Kyung-Won Moon, Kwang-Soon Ahn, Chel-Jong Choi, “Annealing temperature dependency of the electrical and microstructural properties of Ti and Pt contacts to n-type Ge substrates”, Microelectronic Engineering, 89, 76-79 (2012)

129. V. Janardhanam, Hoon-Ki Lee, Jong-Won Yoon, Seung-Min Kang, Chel-Jong Choi, “Annealing temperature dependency of electrical and microstructural properties of Ni-germanide films formed on Ge substrate”, Journal of Ceramic Processing Research, 12(3), s267-s271 (2011)

128. Myungsim Jun, Chel-Jong Choi, Sung-Jin Choi, Youngsam Park, Younghoon Hyun, Taehyoung Zyung, Moongyu Jang, “Pre-silicidation annealing effect on platinum-silicided Schottky barrier MOSFETs”, Semiconductor Science and Technology, 26(12), 125004 (4pp) (2011)

127. Sung-Yong Chang, Joong-Chel Chang, bum-Soo Kim Young-Boo Lee, Chel-Jong Choi, “Premature Failure Analysis of Servovalve Components for a Thermal Power Plant”, Korean Journal of Metals and Materials, 49(9), 708-714 (2011)

126. V. Rajagopal Reddy, D. Subba Reddy, S. Sankar Naik, C.-J. Choi, “Structural, electrical, and surface morphological characteristics of rapidly annealed Pt/Ti Schottky contacts to n-type InP”, Physica Status Solidi (a), 208(10), 2406-2414 (2011)

125. N. Nanda Kumar Reddy, V.Rajagopal Reddy, Chel-Jong Choi, “Influence of rapid thermal annealing effect on electrical and structural properties of Pd/Ru Schottky contacts to n-type GaN”, Materials Chemistry and Physics, 130(3), 1000-1006 (2011)

124. Sung Woo Jung, Jeong-Hyun Park, Wonjoo Lee, Jae-Hong Kim, Hyunsoo Kim, Chel-Jong Choi, Kwang-Soon Ahn, “Enhanced electron lifetime in CdS quantum dot-sensitized solar cells with nanoporous-layer-covered TiO2 nanotube arrays”, Journal of Applied Physics, 110(5), 054301 (2011)

123. Sung Woo Jung, Jae-Hong Kim, Hyunsoo Kim, Chel-Jong Choi, Kwang-Soon Ahn, “CdS quantum dots grown by in situ chemical bath deposition for quantum dot-sensitized solar cells”, Journal of Applied Physics, 110(4), 044313-1~044313-4 (2011)

122. Tae-Youb Kim, Nae-Man Park, In-Kyu You, Cheol-Jong Choi, Ansoon Kim, Maki Suemitsu, “Comparative Study of Silicon Quantum Dot Formation In-situ Grown with a Gas Mixture of SiH4+N2 and SiH4+NH3”, Journal of the Korean Physical Society, 59(2), 308-311 (2011)

121. M. Siva Pratap Reddy, V. Rajagopal Reddy, I. Jyothi, Chel-Jong Choi, “Electrical, structural and morphological characteristics of rapidly annealed Ni/Pd Schottky rectifiers on n-type GaN”, Surface and Interface Analysis, 43(9), 1251-1256 (2011)

120. Jeong-Hyun Park, Jae-Yup Kim, Jae-Hong Kim, Chel-Jong Choi, Hyunsoo Kim, Yung-Eun Sung, Kwang-Soon Ahn, “Enhanced efficiency of dye-sensitized solar cells through TiCl4-treated, nanoporous-layer-covered TiO2 nanotube arrays”, Journal of Power Sources, 196(20), 8904-89-9 (2011)

119. Jong Ock Kim, Song Ki Hong, Hun Kim, Kyung Won Moon, Chul Jong Choi, Kee Young Lim, “Correlations of a High-temperature AlN Buffer Layer and Al-Preseeding with the Structural and the Optical Properties of GaN on a Si(111) Substrate”, Journal of the Korean Physical Society, 58(5), 1374-1379 (2011)

118. N.Nanda Kumar Reddy, V.Rajagopal Reddy, Chel-Jong Choi, “Electrical characteristics and interfacial reactions of rapidly annealed Pt/Ru Schottky contacts on n-type GaN”, Physica Status Solidi (a), 208(7), 1670-1677 (2011)

117. V. Janardhanam, Jin-Sung Kim, Kyungwon Moon, Kyu-Sang Shin, Young-Boo Lee, Do-Geun Kim, Seung-Min Kang, Chel-Jong Choi, “Electrical and Microstructural properties of Pt-germanides formed on p-type Ge substrate”, Journal of the Electrochemical Society, 158 (8), H846-H849 (2011)

116. K.H. Shim, Y.-H. Kil, H.K. Lee, M.I. Shin, T.S. Jeong, S. Kang, C.-J. Choi, T.S. Kim, “Optical properties of Si0.8Ge0.2/Si multiple quantum wells”, Materials Science in Semiconductor Processing, 14, 128-132 (2011)

115. V. Janardhanam, Kyungwon Moon, Jin-Sung Kim, Min-Su Yi, Kwang-Soon Ahn, Chel-Jong Choi, “Microstructural evolution and electrical characteristics of Er-germanides contacts on Ge substrates”, Journal of the Electrochemical Society, 158 (8), H751-H755 (2011)

114. Sung Woo Jung, Jeong-Hyun Park, Sang-Won Seo, Jae-Hong Kim, Chel-Jong Choi, Hyunsoo Kim, Do Kyung Lee, Woo-Sik Jung, Kwang-Soon Ahn, “Enhanced Photoelectrochemical Response of Graphene-Coated Al2O3-TiO2 Nanocomposite Photoanodes”, Molecular Crystals and Liquid Crystals, 538(1), 272-277 (2011)

113. Jeong-Hyun Park, Sang-Won Seo, Jae-Hong Kim, Chel-Jong Choi, Hyunsoo Kim, Do Kyung Lee, Woo-Sik Jung, Kwang-Soon Ahn, “Improved Efficiency of Dye-Sensitized Solar Cell Using Graphene-Coated Al2O3-TiO2 Nanocomposite Photoanode”, Molecular Crystals and Liquid Crystals, 538(1), 285-291 (2011)

112. Hoon-Ki LEE, V. Jagadeesh CHANDRA, Kyu-Hwan SHIM, Jong-Won YOON, Chel-Jong CHOI, “Electrical and structural properties of metal-oxide-semiconductor (MOS) devices with Pt/Ta2O5 gate stacks”, IEICE Transactions, E94-C (No.5), 846-849 (2011)

111. Tae-Youb Kim, Nae-Man Park, Cheol-Jong Choi, Chul Huh, Chang-Geun Ahn, Gun Yong Sung, In-Kyu You, Maki Suemitsu, “"Effects of the Hole Tunneling Barrier Width on the Electrical Characteristic in Silicon Quantum Dots Light-Emitting Diodes”, Japanese Journal of Applied Physics, 50, 04DG11-1 ~ 04DG11-3 (2011)

110. Jon-Won Yoon, Chel-Jong Choi, Daeqon Kim, “Laser-induced synthesis of CaMoO4 nanocollodial suspension and its optical properties”, Materials Transactions, 50(4), 768-771 (2011)

109. Bong-Jun Park, Sang-Yong Jeong, Jun-Ho Kim, Tae-Yeon Seong, Chel-Jong Choi, “Improving the thermal stability of nickel monosilicide thin films by combining annealing with the use of an interlayer and a capping layer”, Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 29(3), “031503 - 031503-5" (2011)

108. S S Choi, D H Cho, C.-J. Choi, J. Y. Kim, J. W. Yang, K. H. Shim, “Robust ESD protection for high brightness GaN LEDs using new TVS Zener diodes”, Semiconductor Science and Technology, 26, 055009(5pp) (2011)

107. S.V. Jagadeesh Chandra, Chel-Jong Choi, S. Uthanna, G. Mohan Rao, “Structural and electrical properties of radio frequency magnetron sputtered tantalum oxide films: Influence of post-deposition annealing”, Materials Science in Semiconductor Processing, 13, 245-251 (2010)

106. Young-Woo Ok, Ajeet Rohatgi, Yeon-Ho Kil, Sung-Eun Park, Dong-Hwan Kim, Joon-Sung Lee, Chel-Jong Choi, “Abnormal dopant distribution in textured crystalline silicon solar cells with n+ emitter junctions formed using a POCl3-diffusion process”, IEEE Electron Device Letters, 32(3), 351-353 (2011)

105. I. Jyothi, V.Rajagopal Reddy, Chel-Jong Choi, “Microstructural and electrical characteristics of rapidly annealed Ni/Mo Schottky rectifiers on cleaned n-type GaN (0001) surface”, Journal of Materials Science:Materials in Electronics, 22(3), 286-291 (2011)

104. Hyo-Bong Hong, Hans-Joachim Krause, Ki-Bong Song, Chel-Jong Choi, Myung-Ae Chung, Sung-won Son, Andreas Offenhäusser, “Detection of two different Influenza A viruses using a nitrocellulose membrane and a magnetic biosensor”, Journal of Immunological Methods, 365, 95-100 (2011)

103. V.Janardhanam, A.Ashok Kumar, V.Rajagopal Reddy, Chel Jong Choi, “Study of deep level defect behavior in undoped n-InP (100) after rapid thermal annealing”, Microelectronic Engineering, 88(4), 506-508 (2011)

102. Sung-Jin Choi, Chel-Jong Choi, Jee-Yeon Kim, Moongyu Jang, Yang-Kyu Choi, “Analysis of Transconductance (gm) in Schottky-Barrier MOSFETs”, IEEE Transactions on Electron Devices, 58 (2), 427-432 (2011)

101. S. V. Jagadeesh Chandra, Myung-Il Jeong, Yun-Chang Park, Jong-Won Yoon, Chel-Jong Choi, “Effect of annealing ambient on structural and electrical properties of Ge metal-oxide-semiconductor capacitors with Pt gate electrode and HfO2 gate dielectric”, Materials Transactions, 52(1), 118-123 (2011)

100. S. Sankar Naik, V. Rajagopal Reddy, Chel-Jong Choi, Jong-Seong Bae, “Electrical and structural properties of double metal structure Ni/V Schottky contacts on n-InP after rapid thermal process”, Journal of Materials Science:Materials in Electronics, 46(2), 558-565 (2011)

99. Hyung-Joong Yun, Jouhahn Lee, Min-Cherl Jung, Moon-Sup Han, Kyoungwan Park, Kwang-Soon Ahn, Chel-Jong Choi, “Chemical bonding structures of silicon oxynitride films grown by ionized N2 and pure O2 gas mixtures at low temperature”, Advances in Applied Ceramics: Structural, Functional and Bioceramics, 110(1), 25-29 (2011)

98. Jin-Bok Lee, Chel-Jong Choi, Tae-Yeon Seong, “Growth of amorphous silica nanowires using nickel silicide catalyst by a thermal annealing process”, Current Applied Physics, 11, 199-202 (2011)

97. Chul Huh, Kyung-Hyun Kim, bong Kyu Kim, Wanjoong Kim, Hyunsung Ko, Chel-Jong Choi, Gun Yong Sung, “Enhancement in Light Emission Efficiency of a Silicon Nanocrystal Light-Emitting Diode by Multiple-Luminescent Structures”, Advanced Materials, 22, 5058-5062 (2010)

96. V. Janardhanam, Hoon-Ki Lee, Kyu-Hwan Shim, Hyo-Bong Hong, Soo-Hyung Lee, Kwang-Soon Ahn, Chel-Jong Choi, “Temperature dependency and carrier transport mechanisms of Ti/p-type InP Schottky rectifiers”, Journal of Alloys and Compounds, 504, 146-150 (2010)

95. Myeong-Il Jeong, Sung-Eun Park, D Kim, Joon-Sung Lee, Yun-Chang Park, Kwang-Soon Ahn, Chel-Jong Choi, “Transmission electron microscope study of screen-printed Ag contacts on crystalline Si solar cells”, Journal of the Electrochemical Society, 157(10), H934-H936 (2010)

94. Yeon-Ho Kil, Myeong-Il Jeong, Kyu-Hwan Shim, Hyo-Bong Hong, Hyung-Joong Yun, Seung-Min Kang, Kwang-Soon Ahn Chel-Jong, “Two-dimensional dopant profiling in p+/n junctions using scanning electron microscope coupled with selective electrochemical etching”, Electronic Materials Letters, 6, 55 (2010)

93. M.Siva Pratap Reddy, V.Rajagopal Reddy, Chel-Jong Choi, “Electrical properties and interfacial reactions of rapidly annealed Ni/Ru Schottky rectifiers on n-type GaN”, Journal of Alloys and Compounds, 503(1), 186-191 (2010)

92. M. Bhaskar Reddy, V. Janardhanam, A. Ashok Kumar, V. Rajagopal Reddy, P. Narasimha Reddy, Chel-Jong Choi, Ranju Jung, Sung Hur, “The influence of rapid thermal annealing on electrical and structural properties of Pt/Au Schottky contacts to n-type InP”, Journal of Materials Science: Materials in Electronics, 21(8), 804-810 (2010)

91. Il-Kyu Park, Seong-Ju Park, Chel-Jong Choi, “Growth of height-controlled InGaN quantum dots on GaN”, Journal of Crystal Growth, 312, 2065-2068 (2010)

90. S. V. Jagadeesh Chandra, Mi-Ra Jeong, Kyu-Hwan Shim, Hyo-Bong Hong, Soo-Hyung Lee, Kwang-Soon Ahn, Chel-Jong Choi, “Effective metal work function of Pt gate electrode in Ge metal oxide semiconductor (MOS) device with HfO2 gate dielectric”, Journal of the Electrochemical Society, 157, H546-H550 (2010)

89. Taek Sung Kim, Sang-Sik Choi, Mi Im Shin, Tae Soo Jeong, Sukil Kang, Chel-Jong Choi Kyu-Hwan Shim, “Dry Etching of Germanium Using Inductively Coupled Ar/CCl2F2 /Cl2 Plasma”, Electronic Materials Letters, 6, 35-39 (2010)

88. I. Jyothi, V. Rajagopal Reddy, M. Siva Pratap Reddy, Chel-Jong Choi, Jong-Seong Bae, “Structural and electrical properties of rapidly annealed Ni/Mo Schottky barriers on n-type GaN”, Physica Status Solidi (a), 203(3), 753-759 (2010)

87. Chel-Jong Choi, Seung-Min Kang, Hyo-Bong Hong, Soo-Hyung Lee, Jin-Gyu Kim, Kwang-Soon Ahn, Jong-Won Yoon, “In-situ transmission electron microscopy investigation of the interfacial reaction between Er and SiO2 films”, Materials Transactions, 51(4), 793-798 (2010)

86. Jin-Bok Lee, Sang-Yong Jeong, bong-Jun Park, Chel-Jong Choi and Tae-Yeon Seong, “"Improved electrical and thermal properties of nickel

silicides by using a NiCo interlayer”, Superlattice and Microstructure, 47, 259-165 (2010)

85. Taek Sung Kim, Sang-Sik Choi, Tae Soo Jeong, Sukil Kang, Chel-Jong Choi, Kyu-Hwan Shim, “Fabrication of PIN Photo-Diode from Si0.2Ge0.8/Si strained MQWs”, Electronic Materials Letters, 5, 95-98 (2009)

84. Seung-Min Kang, Chel-Jong Choi, Jong-Won Yoon, “Growth of AlN crystals by a sublimation process and their optical properties”, Journal of Ceramic Processing Research, 10, 689-691 (2009)

83. Jin-Wook Shin, Chel-Jong Choi, Moongyu Jang, Won-Ju Cho, “Fabrication of n- and p-Channel Schottky Barrier Thin-Film Transistors Crystallized by Excimer Laser Annealing and Solid Phase Crystallization Methods”, Japanese Journal of Applied Physics, 48, 04C151 (2009)

82. Ying-Ying Zhang, Chel-Jong Choi, Jungwoo Oh, In-Shik Han, Shi-Guang Li, Kee-Young Park, Hong-Sik Shin, Ga-Won Lee, Jin-Suk Wang, Prashant Majhi, Raj Jammy, Hi-Deok Lee, “Microstructural Innovation of Ni Germanide on Ge-on-Si Substrate by Using Palladium Incorporation”, Electrochemical and Solid-State Letters, 12, H402-H404 (2009)

81. Sung-Jin Choi, Jin-Woo Han, Moongyu Jang, Cheljong Choi, Yang-Kyu Choi, “Characterization of current injection mechanism in Schottky-barrier metal-oxide-semiconductor field-effect transistors”, Applied Physics Letters, 95, 83502 (2009)

80. Duofa Wang, Sangyoon Park, Yongsu Lee, Taiwoon Eom, Seongjae Lee, Young Pak Lee, Cheljong Choi, Jinchai Li, Chang Liu, “Epitaxial ZnMnO/ZnO Coaxial Nanocable”, Crystal Growth & Design, 9, 2124-2127 (2009)

79. Sung-Yong Chang, Myeong-Il Jeong, S. V. Jagdeesh Chandra, Yong-Boo Lee, Hyo-Bong Hong, V. Rajagopal Reddy,  Chel-Jong Choi, “Thermal stability of high-k Er-silicate gate dielectric formed by interfacial reaction between Er and SiO2 films”, Materials Science in Semiconductor Processing, 11, 122-125 (2008)

78. Ran-Ju Moon, Myeong-II Jeong, S. V. Jagdeesh Chandra, Kyu-Hwan Shim, Moongyu Jang, Hyo-Bong Hong, Sung-Yong Chang, Chel-Jong Choi, “Platinum Silicided p-Type Schottky Barrier Metal-Oxide-Semiconductor Field-Effect Transistors Using Silicidation Through Oxide Technique”, Journal of the Electrochemical Society, 156, H621-H624 (2009)

77. Jin-Wook Shin, Won-Ju Cho, Chel-Jong Choi,  Moongyu Jang, “Characteristics of polycrystalline silicon Schottky barrier thin film transistors fabricated using metallic junction source/drain with erbium silicide and platinum silicide”, Applied Physics Letters, 94, 53502 (2009)

76. Hyobong Hong, Soohyung Lee, Taewan Kim, Myungae Chung, Cheljong Choi, “Surface modification of the polyethyleneimine layer on silicone oxide film via UV radiation”, Applied Surface Science, 255, 6103-6106 (2009)

75. Chel-Jong Choi, Ha-Yong Yang, Hyo-Bong Hong, Jin-Gyu Kim, Sung-Yong Chang,  Jou-Hahn Lee, “Characteristics of metal-oxide-semiconductor (MOS) device with Er metal gate on SiO2 film”, Microelectronics Reliability, 49, 463-465 (2009)

74. Varra Rajagopal Reddy, M. Ravinandan P. Koteswara Rao, Chel-Jong Choi, “Effects of thermal annealing on the electrical and structural properties of Pt/Mo Schottky contacts on n-type GaN”, Journal of Materials Science: Materials in Electronics, 20, 1018-1025 (2009)

73. Moongyu Jang, Cheljong Choi,  Seongjae Lee, “20-nm-gate-length erbium-/platinum-silicided n- /p-type Schottky barrier metal-oxide-semiconductor field-effect transistors”, Applied Physics Letters, 93, 192112 (2008)

72. Chel-Jong Choi, Won-Jin Jung, Myung-Sim Jun, Moon-Gyu Jang, Seong-Jae Lee, June Park, Maeng-Je Seong, Myung-Ho Jung, Won-Ju Cho, “Characterization of electrical and structural properties of strained-Si-on-insulator”, Applied Physics Letters, 92, 83507 (2008)

71. Jin-Wook Shin, Chel-Jong Choi, Moongyu Jang, Won-Ju Cho, “Schottky Barrier N-Type Thin Film Transistors With Polycrystalline Silicon Channel and Er-Silicided Metallic Junctions”, IEEE ELECTRON DEVICE LETTERS, 29, 1336-1339 (2008)

70. Myungsim Jun, Yarkyeon Kim, Cheljong Choi, Taeyoub Kim, Soonyoung Oh, Moongyu Jang, “Schottky barrier heights of n/p-type erbium-silicided schottky diodes”, Microelectronic Engineering, 85, 1395-1398 (2008)

69. Yarkyeon Kim, Chel-Jong Choi, Y. H. Hyun, Young-Pak Leey, Seongjae Lee, “Half-Metallic Ferromagnet Formation on Si Wafers by Using a Silicidation Process”, Journal of the Korean Physical Society, 53, 1546-1550 (2008)

68. Ulugbek Shaislamov, Jun-Mo Yang, Jung Ho Yoo, Hyun-Sang Seo, Kyung-Jin Park, Chel-Jong Choi, Tae-Eun Hong, Beelyong Yang, “Two-dimensional dopant profiling in semiconductor devices by electron holography and chemical etching delineation techniques with the same specimen”, Microelectronics Reliability, 48, 1734-1736 (2008)

67. V Rajagopal Reddy, M Ravinandan, P Koteswara Rao, Chel-Jong Choi, “Electrical and structural properties of rapidly annealed Pd/Mo Schottky contacts on n-type GaN”, Semiconductor Science and Technology, 23, 095026 (7pp) (2008)

66. Nae-Man Park, Hyun-Kyu Park, Chel-Jong Choi, Sang-Woo Kim, Sunglyul Maeng, “New approach to the growth of SiOx nanowire bunch using Au catalyst and SiNx film on Si substrate”, Physica E, 40, 3170– 3172 (2008)

65. Myungsim Jun, Moongyu Jang, Yarkeon Kim, Cheljong Choi, Taeyoub Kim, Soonyoung Oh, Seongjae Lee, “Analysis of temperature-dependent barrier heights in erbium-silicided Schottky diodes”, Journal of Vacuum Science and Technology B, 26, 137-140 (2008)

64. Chel-Jong Choi, Moon-Gyu Jang, Yark-Yeon Kim, Myung-Sim Jun, Tae-Youb Kim, Seong-Jae Lee, “Platinum silicided p-type Schottky barrier metal-oxide-semiconductor field-effect transistors scaled down to 20 nm”, Electronic Letters, 44, 159-160 (2008)

63. Chel-Jong Choi, Won-Jin Jung, Yark-Yeon Kim, Myung-Sim Jun, Tae-Youb Kim, Moon-Gyu Jang, Myeong-Ho Song, Seong-Jae Lee, “Er and Pt Gate Electrodes Formed on SiO2 Gate Dielectrics”, Electrochemical and Solid-State Letters, 11, H22-H25 (2008)

62. Sol Lee, byoung Youl Park, Kyoungwan Park, Chang Hyun Bae, Seung Min Park, Cheljong Choi, Seongjae Lee, “Nanocrystalline Si Formation by Pulsed Laser Deposition/Annealing Techniques and Its Charge Storage Effect”, Journal of the Korean Physical Society, 51, S308-S312 (2007)

61. V. Rajagopal Reddy, Chel-Jong Choi, “Electrical and microstructural properties of low-resistance Ti/Re/Au ohmic contacts to n-type GaN”, Physica Status Solidi (a), 204, 3392-3397 (2007)

60. Chel-Jong Choi, Sung-Yong Chang, Seong-Jae Lee, Young-Woo Ok, Tae-Yeon Seong, “Thickness effect of a Ge interlayer on the formation of nickel silicides”, Journal of the Electrochemical Society, 154, H759-H763 (2007)

59. Young-Woo Ok, Donghwan Kim, Chel-Jong Choi, Sungkwon Baek, Hyundoek Yang, Tae-Yeon Seong, “Effect of a Mo Interlayer on the Electrical Properties of Ni-Silicided n+/p Diode and n+ Poly-Si Gate Electrode”, Journal of the Electrochemical Society, 154, H822-H824 (2007)

58. Jung Inn Sohn, Heung Jin Joo, Alexandra E. Porter, Chel-Jong Choi, Kinam Kim, Dae Joon Kang, Mark E. Welland, “Direct observation of the structural component of the metal-insulator phase transition and growth habits of epitaxially grown VO2 nanowires”, Nano Letters, 7, 1570-1574 (2007)

57. Chel-Jong Choi, Moon-Gyu Jang, Yark-Yeon Kim, Myung-Sim Jun, Tae-Youb Kim, Myeong-Ho Song, “Electrical and structural properties of high-k Er-silicate gate dielectric formed by interfacial reaction between Er and SiO2 films”, Applied Physics Letters, 91, 012903-1 ~ '012903-3 (2007)

56. Byoungchul Park, Hi-Deok Lee, Yarkyeon Kim, Moongyu Jang, Cheljong Choi, Myungsim Jun, Taeyoub Kim, Seongjae Lee, “Characteristics of n-Type SB-MOSFETs Manufactured by Using a Metal-Gate & a High-K Dielectric”, Journal of the Korean Physical Society, 50, 893-896 (2007)

55. Sang-Woo Kim, Hyun-Kyu Park, Min-Su Yi, Nae-Man Park, Jong-Hyurk Park, Sang-Hyeob Kim, Sung-Lyul Maeng, Chel-Jong Choi, Seung-Eon Moon, “Epitaxial growth of ZnO nanowall networks on GaN/sapphire substrates”, Applied Physics Letters, 90, 033107-1 ~ '033107-3 (2007)

54. Chul Huh, Jae-Heon Shin, Kyung-Hyun Kim, Chel-Jong Choi, Kwan Sik Cho, Jongcheol Hong, Gun Yong Sung, “Enhanced performance of Si nanocrystal LEDs by using Ni/Ag/indium tin oxide contact”, Electrochemical and Solid-State Letters, 10, J9-J11 (2007)

53. Cheljong CHOI, Moongyu JANG, Yarkyeon KIM, Myungsim JUN, Taeyoub KIM, byoungchul PARK, Seongjae LEE, Hyundoek YANG, Ranju JUNG, Man CHANG, Hyunsang HWANG, “Effective metal work function of high-pressure hydrogen postannealed Pt–Er alloy metal gate on HfO2 film”, Japanese Journal of Applied Physics, 46, 125-127 (2007)

52. Myungsim Jun, Moongyu Jang, Yarkyeon Kim, Cheljong Choi, Taeyoub Kim, byungchul Park, Seongjae Lee, “Analysis of interface trap states at Schottky diode by using equivalent circuit modeling”, Journal of Vacuum Science and Technology B, 25, 82-85 (2007)

51. Atsushi Nagai, Jun Minamidate, Gouji Asano, Chel Jong Choi, Choong-Rae Cho, Youngsoo Park, Hiroshi Funakuboa, “Conformality of Pb(Zr,Ti)O3 Films Deposited on Trench Structures Having Submicrometer Diameter and Various Aspect Ratios”, Electrochemical and Solid-State Letters, 9, C15-C18 (2006)

50. SAGNMIN SHIN, JUNE-MO KOO, SUKPIL KIM, YOUNG SU CHUNG, CHEL-JONG CHOI, JANG HO LEE, YOUNGSOO PARK, NAKWON JANG, SI-HYUN PARK, JUNE KEY LEE, “Metal-organic chemical vapor deposition of PbZrxTi1–xO3 thin films on Ir–Ru alloy electrodes”, Integrated Ferroelectrics, 84, 57-65 (2006)

49. V Rajagopal Reddy, N Ramesha Reddy, Chel-Jong Choi, “The effect of annealing temperature on electrical and structural properties of Rh/Au Schottky contacts to n-type GaN”, Semiconductor Science and Technology, 21, 1753-1757 (2006)

48. Chul Huh, Jae-Heon Shin, Kyung-Hyun Kim, Chel-Jong Choi, Kwan Sik Cho, Jongcheol Hong, Gun Yong Sung, “Enhancement of performance of Si nanocrystal light-emitting diodes by using Ag nanodots”, IEEE Photonics Technology Letters, 18, 2068-2070 (2006)

47. Young-Woo Ok, Tae-Yeon Seong, Chel-Jong Choi, K. N. Tu, “Ni implantation-induced enhancement of the crystallisation of amorphous Si”, Journal of Materials Science: Materials in Electronics, 17, 979-985 (2006)

46. M-J Jang, Y-Y Kim, M-S Jeon, Cheljong Choi, I. Baek, Seongjae Lee, Byoungchul Park, “N2-Annealing Effects on Characteristics of Schottky-Barrier MOSFETS”, IEEE Transactions on Electron Devices, 53, 1821-1825 (2006)

45. Chel-Jong Choi Moon-Gyu Jang, Yark-Yeon Kim, Myung-Sim Jeon, byoung-Chul Park, Seong-Jae Lee, Ran-Ju Jung, Hyun-doek Yang, Man Chang,  Hyun-sang Hwang, “Effects of High-Pressure Hydrogen Postannealing on the Electrical and Structural Properties of the Pt-Er Alloy Metal Gate on HfO2 Film”, Electrochemical and Solid-State Letters, 9, G228-G230 (2006)

44. N. Ramesha Reddy, V. Rajagopal Reddy, Chel-Jong Choi, “Microstructural properties of thermally stable Ti/W/Auohmic contacts on n-type GaN”, Microelectronic Engineering, 83, 1981-1985 (2006)

43. Moongyu JANG, Yarkyeon KIM, Myungsim JEON, Cheljong CHOI, byoungchul PARK, Seongjae LEE, “Ambipolar Carrier Injection Characteristics of Erbium-Silicided n-Type Schottky Barrier Metal–Oxide–Semiconductor Field-Effect Transistors”, Japanese Journal of Applied Physics, 45, 730-732 (2006)

42. V. Rajagopal Reddy, C. K. Ramesh, Chel-Jong Choi, “Structural and electrical properties of Mo/n-GaN Schottky diodes”, Physica Status Solidi (a), 203, 622-627 (2006)

41. Young-Woo Ok Tae-Yeon Seong, Chel-Jong Choi, K. N. Tu, “Field emission from Ni-disilicide nanorods formed by using implantation of Ni in Si coupled with laser annealing”, Applied Physics Letters, 88, 043106-1 ~ 043106-3 (2006)

40. Yong-Jin Kim, Chel-Jong Choi, Ran-Ju Jung, Soon-Young Oh, Jang-Gn Yun, Won-Jae Lee, Hee-Hwan Ji, Jin-Suk Wang, Hi-Deok Lee, “The effect of triple capping layer (Ti/Ni/TiN) on the electrical and structural properties of nickel monosilicide”, Journal of the Electrochemical Society, 153, G35-G38 (2006)

39. V. Rajagopal Reddy, N. Ramesha Reddy, Chel-Jong Choi, “Electrical and structural properties of low-resistance Pt/Ag/Au ohmic contacts to p-type GaN”, Solid-State Electronics, 49, 1213-1216 (2005)

38. S-H. Kim, J-T. Maeng, C-J. Choi, J-H. Leem, M-S. Han, T-Y. Seong, “Pt-indium tin oxide ohmic contacts to arsenic-doped p-type ZnO layers”, Electrochemical and Solid-State Letters, 8, G167-G169 (2005)

37. T-Y Kim, N-M Park, K-H Kim, G Y Sung, Y-W Ok, T-Y Seong, C-J Choi, “Quantum confinement effect of Si nanocrystals in situgrown in silicon nitride films”, Applied Physics Letters, 85, 5355-5357 (2004)

36. C. K. Ramesha, V. Rajagopal Reddy, Chel-Jong Choi, “Electrical characteristics of molybdenum Schottky contacts on n-type GaN”, Materials Science and Engineering B, 112, 30-33 (2004)

35. YOUNG-WOO OK, CHEL-JONG CHOI, JEONG-TAE MAENG, TAE-YEON SEONG, “Formation of Thermally Stable Ni Monosilicide Using an Inductively Coupled Plasma Process”, Journal of Electronic Materials, 33, 916-922 (2004)

34. C-J Choi, S-A Song, Y-W Ok, T-Y Seong, “Novel Nickel-silicidation process using hydrogen implantation”, Electronic Letters, 40, 391-393 (2004)

33. M. H. Kim, Y. G. Do, H. C. Kang, C. J. Choi, D. Y. Noh, T. Y. Seong, S. J. Park, “Growth of crack-free high-qaulity GaN on Si(111) using a low temp AlN interlayer; Observation of tilted domain structures in the AlN interlayer”, Physica Status Solidi (c), 0, 2150-2153 (2003)

32. C-J Choi, S-Y Chang, Y-W Ok, T-Y Seong, H Gan. G. Z. Pan,  K N Tu, “Formation of nickel disilicide using Ni implantation and rapid thermal annealing”, Journal of Electronic Materials, 32, 1072-1078 (2003)

31. Y-W Ok, C. J. Choi, C. Thanachayanont,  T-Y Seong, “Role of a Mo inetrlayer on the thermal stability of Ni-silicides”, Institute of Physics Conference Series, 180, 475 (2003)

30. Y-W Ok, C-J Choi, T-Y Seong, “Effect of Mo interlayer in the formation of nickel silicide”, Journal of the Electrochemical Society, 150, G385 (2003)

29. J. H. Lee, H. D. Lee, K. M. Lee, C. J. Choi, T. Y. Seong, “A Study of Stress-Induced p+n Silicided Junction Leakage Fail and Optimized Process Conditions for sub-0.15 mm CMOS Technology”, IEEE Transactions on Electron Devices, 49, 1985 (2002)

28. C-J Choi, Y-W Ok, S S Hullavarad, T-Y Seong, K-M Lee, J-H Lee, Y-J Park, “Effects of hydrogen implantation on the structural and electrical properties of nickel silicide”, Journal of the Electrochemical Society, 149, G517 (2002)

27. J-I Sohn, C-J Choi, S. Lee, T-Y Seong, “Effect of Fe film thickness and pretreatments on the growth behaviors of carbon nanotubes on Fe-doped Si substrates”, Japanese Journal of Applied Physics, 41, 4731 (2002)

26. K-M Lee, C-J Choi, J-H Lee, T-Y Seong, Y-J Park, S-K Hong, J-G Ahn, H-D Lee, “N+P junction leakage characteristics of Co salicide process for 0.15 μm CMOS devices”, IEEE Transactions on Electron Devices, 49, 937 (2002)

25. C-J Choi, T-Y Seong, K-M Lee, J-H Lee, Y-J Park, H-D Lee, “Abnormal junction profile of silicided p+/n shallow junctions: A leakage mechanism”, IEEE Electron Device Letters, 23, 188 (2002)

24. C-J Choi, Y-W Ok, T-Y Seong, H-D Lee, “Effect of a SiO2 capping layer on the electrical properties and morphology of nickel silicides”, Japanese Journal of Applied Physics, 41, 1969 (2002)

23. C-J Choi, T-Y Seong, K-M Lee, J-H Lee, Y-J Park, H-D Lee, “Abnormal junction profile of submicron CMOS devices with Co silicidation and shallow trench isolation processes”, Electrochemical and Solid-State Letters, 4, 88 (2001)

22. C-J Choi, M-G Hans, S Lee, T-Y Seong, “TEM study of diffused n+p junctions produced by KrF excimer laser thermal annealing”, Institute of Physics Conference Series, 169, 439 (2001)

21. C-J Choi, J I Shon, S Lee, T-Y Seong, “Structural evolution of carbon nanotubes grown on Fe-deposited Si substrates by thermal CVD”, Institute of Physics Conference Series, 169, 145 (2001)

20. S. Jeon, C-J Choi, T-Y Seong, H Hwang, “Electrical characteristics of ZrOxNy prepared by NH3 annealing of ZrO2”, Applied Physics Letters, 79, 245 (2001)

19. Y-W Ok, C-J Choi, T-Y Seong, I.Suemune, N.Morooka, K.Uesugi, “Structural properties of GaNAs layers grwon by MOMBE”, Journal of Electronic Materials, 30, 900 (2001)

18. Y.T.Moon, D.J.Kim, K.M.Song, C.J.Choi, S.H.Han, T.-Y.Seong, S.-J.Park, “Effect of thermal and hydrogen treatment on In segregation in InGaN/GaN MQWs”, Journal of Applied Physics, 89, 6514 (2001)

17. J-I Shon, C-J Choi, S.Lee, T-Y Seong, “Growth behavior of carbon nanotubes grown on Fe-deposited (011) Si substrates”, Applied Physics Letters, 78, 3130 (2001)

16. M.H.Kim, Y.C.Bang, N.M.Park, C.-J.Choi, T.-Y.Seong, S.-J.Park, “Growth of high-quality GaN on Si(111) substrate by UVCVD”, Applied Physics Letters, 78, 2858 (2001)

15. N.M. Park, C.-J. Choi, T.-Y. Seong, S.-J. Park, “Quantum confinement and blue light emission in amorphous silicon quantum daots embedded i silicon nitrides”, Physical Review Letters, 86(7), 1355 (2001)

14. D. J. Kim, Y. T. Moon, K. M. Song, C.-J. Choi, Y. W. Ok, T. Y. Seong, S. J. Park, “Structural and optical properties of InGaN/GaN MQWs: the effect of the number of InGaN/GaN pairs”, Journal of Crystal Growth, 221, 368 (2000)

13. S.K.Baek, C.-J. Choi, T.-Y.Seong, H.Hwang, D.W.Moon, H.K. Kim, “Ultrashallow p+n Junction Formation by Plasma Ion Implantation”, Journal of the Korean Physical Society, 37, 912 (2000)

12. S. W. Jun, R. T. Lee, C. M. Fetzer, J. K. Shurtleff, G. B. Stringfellow, C. J. Choi, T.-Y. Seong, “Bi surfactant control of ordering and surface structure in GaInP grown by OMVPE”, Journal of Applied Physics, 88, 4429 (2000)

11. S.K. Baek, C. J. Choi, T.-Y. Seong, H. Hwang, H. K. Kim, D. W. Moon, “Characterization of sub-30 nm p+n junction formed by plasma ion implantation”, Journal of the Electrochemical Society, 147, 3091 (2000)

10. Y. Hsu, C.M. Fetzer, G.B. Stringfellow, J.K. Shurtleff, C.J. Choi, and T.-Y. Seong, “Heterostructures in GaInP grown using a change in Te doping”, Journal of Applied Physics, 87, 7776 (2000)

9. D-H Youn, S-J Son, Y-J Lee, S-W Hwang, J-J Yang, K-J Lee, J-H Kim, J-Y Jo, J-B Yoo, C-J Choi, T-Y Seong, “Investigation of the role of low temperature GaN in p-GaN_InGaN_n-GaN DH LEDs”, Japanese Journal of Applied Physics, 39, 2512 (2000)

8. C-J Choi, T-Y Seong, “TEM study of 2-D dopant profiling in MOSFET test structures and devices”, Journal of the Electrochemical Society, 147, 1525 (2000)

7. C-J Choi, R. Spirydon, T-Y Seong, S.H. Lee, G.B. Stringfellow, “Effects of Te doping on ordering and APBs in GaInP”, Japanese Journal of Applied Physics, 39, 402 (2000)

6. Y.-T. Moon, D.-J. Kim, K.-M. Song, I.-H. Lee, M.-S. Yi, D.-Y. Noh, C.-J. Choi, T-Y Seong and S-J Park, “Optical and structural studies of phase separation in InGaN films grown by MOCVD”, Physica Status Solidi (b), 216, 167 (1999)

5. C-J Choi and T-Y Seong, “Two-dimensional dopant profiling in shallow junctions using TEM and SCM”, Institute of Physics Conference Series, 164, 491 (1999)

4. T-Y Seong, C-J Choi, R Spyridon, S-H Lee, G.B.Stringfellow, “TEM study of ordered domain structures in Te-doped GaInP layers”, Institute of Physics Conference Series, 164, 283 (1999)

3. S.H. Lee, C.M. Fetzer, G.B. Stringfellow, C.J. Choi, T-Y Seong, “Step structure and ordering in Zn-doped GaInP”, Journal of Applied Physics, 86, 1982 (1999)

2. Tae-Yeon Seong, In-Tae Bae, Chel-Jong Choi, D. Y. Noh, Y. Zhao, C. W. Tu, “Microstructures of GaN1-xPx layers grown on (0001) …GaN substrates by gas source molecular beam epitaxy”, Journal of Applied Physics, 85, 3192 (1999)

1. Tae-Yeon Seong, In-Tae Baea, Chel-Jong Choi, Y. Zhao, C. W. Tub, “Ordering and Microstructures of GaN1-xAsx Layers Grown on (0001) GaN/Sapphire Substrates”, Electrochemical and Solid-State Letters, 2, 94 (1999)