[123] Soohyung Park, Junkyeong Jeong, Jisu Yoo, Donghee Kang, Kitae Kim, Keun Yong Lim, Do Kyung Hwang, Hyunbok Lee*, Yeonjin Yi*, "Decoupling intrinsic and extrinsic photodegradation pathways in organic solar cells", XXX, submitted (2025) [link]
[122] Na Eun Jung+, Donghee Kang+, Jeehong Park, Kitae Kim, Junho Kim, Joo Young Kim, Chang-Hee Lee, Gi-Dong Lee, Sylke Blumstrengel, Nicolas Zorn Morales, Emil J. W. List-ratochvil, Seong Jae Choi, Heung-Sik Kim, Dong Won Chun, Soohyung Park, Hyunbok Lee*, Yeonjin Yi*, "Precisely controlled organic halide evaporation for efficient vacuum-deposited perovskite light-emitting diodes", XXX, submitted (2025) [link]
[121] Woojin Shin, Seungsun Choi, Jooyeon Moon, Hyunbok Lee*, "Electronic structure of graphene films prepared from water dispersions and their energy level alignments with organic semiconductors", Journal of Chemical Physics, 162, 164703 (2025) [link]
[120] Jaewon Oh, Sung Hun Kim, Seungsun Choi, Muntae Hwang, Hyunbok Lee, Hong Seok Lee, Mee-Yi Ryu*, "Enhancing performance and stability of perovskite solar cells via CsPbBr3 nanocrystal-assisted antisolvent engineering", Current Applied Physics, 71, 37-45 (2025) [link]
[119] Seungsun Choi, Woojin Shin, Nahyun Kim, Myeongjae Kim, Seungjun Lee, Hyeongseok Jeon, Hyunbok Lee*, "Influence of storage conditions on the electronic structure of Au and interfacial state formation with C60", Applied Surface Science, 684, 161960 (2025) [link]
[118] Jae Yoon Lee, Sang Eon Jun, Jae Hyung Shim, Hee Seong Kang, Changyeon Kim, Kitae Kim, Jin Yong An, Seokhoon Choi, Jeonghun Yun, Junghoon Kang, Seok Woo Lee, Soohyung Park, Hyunbok Lee, Yeonjin Yi, Ho Won Jang*, Chul-Ho Lee*, "Wafer-scale semitransparent MoS2/WS2 heterojunction catalyst on a silicon photocathode for efficient hydrogen evolution", Small, 21, 2407650 (2025) [link]
[117] Younjoo Lee, Junkyeong Jeong, Kwanwook Jung, Jeihyun Lee, Yungsik Youn, Soohyung Park, Hyunbok Lee*, Yeonjin Yi*, "Vacuum electrospray deposition for face-on orientation and interface preservation in organic photovoltaics", Scientific Reports, 15, 745 (2025) [link]
[116] Muntae Hwang, Il-Wook Cho, Jaewon Oh, Hyunbok Lee, Mee-Yi Ryu*, "Characterization of Cs0.22FA0.78PbI3 perovskite solar cells based on N-methyl-2-pyrrolidone and dimethyl sulfoxide", Applied Science and Convergence Technology (SCOPUS/ESCI), 33, 156-159 (2024) [link]
[115] Lei Zhang+, Yuxing Wang+, Junjie Wen, Yifan Huang, Jiaxin Gao, Yuxin Duan, Soohyung Park, Woojin Shin, Zaifei Ma, Miao Liu, Sang Wan Cho, Yeonju Park, Young Mee Jung, Hyunbok Lee*, Wenxu Liu*, Yao Liu*, "Configurational isomerization-induced orientation switching: Non-fused ring dipodal phosphonic acids as hole-extraction layers for efficient organic solar cells", Angewandte Chemie-International Edition, 63, e202408960 (2024) [link]
[114] Sehyun Jung+, Seungsun Choi+, Woojin Shin, Hyesung Oh, Nahyun Kim, Sunghun Kim, Namkook Kim, Kyuhyun Kim, Hyunbok Lee*, "Effects of antisolvent treatment on copper(I) thiocyanate hole transport layer in n-i-p perovskite solar cells", Molecules, 29, 4440 (2024) [link]
[113] Muntae Hwang, Il-Wook Cho, Jaewon Oh, Hyunbok Lee, Mee-Yi Ryu*, "Effect of bromine on the formation of δ-CsPbI3 in Cs0.22FA0.78Pb(I1-xBrx)3 perovskite solar cells", Current Applied Physics, 68, 108-112 (2024) [link]
[112] Seungsun Choi, Hyunbok Lee*, "Effect of dimethyl sulfoxide additive on the energy-level alignment of the PEDOT:PSS/C60 interface", Applied Science and Convergence Technology (SCOPUS/ESCI), 33, 87-90 (2024) [link]
[111] Nahyun Kim, Jaewon Ahn, Moonseok Ko, Seungsun Choi, Wonsik Kim, Woojin Shin, Sehyun Jung, Hyesung Oh, Muntae Hwang, Mee-Yi Ryu, Hyunbok Lee*, "Two-step preparation of methylammonium lead triiodide perovskite film via electrospray deposition of methylammonium iodide solution for solar cell applications", Current Applied Physics, 66, 88-94 (2024) [link]
[110] Hyunbok Lee*, "Energy level alignment of indium tin oxide/pentacene/C60", Applied Science and Convergence Technology (SCOPUS/ESCI), 33, 72-75 (2024) [link]
[109] Muntae Hwang+, Jaewon Oh+, Hyunbok Lee, Mee-Yi Ryu*, "Effect of δ-CsPbI3 phase separation in CsxFA1−xPbI3 under ambient conditions", Applied Science and Convergence Technology (SCOPUS/ESCI), 33, 23-26 (2024) [link]
[108] Kitae Kim, Donghee Kang, Sylke Blumstengel, Nicolas Zorn-Morales, Emil J. W. List-Kratochvil, Sang Wan Cho, Hyunbok Lee*, Soohyung Park*, Yeonjin Yi*, "Enhancing photostability of 2D Ruddlesden-Popper perovskite via molecular acceptor passivation of metallic lead defects", Applied Physics Reviews, 10, 041411 (2023) [link]
[107] Jaewon Oh, Hyunbok Lee, Mee-Yi Ryu*, "Effect of antisolvent application time on CH3NH3PbI3 solar cells in ambient atmosphere", Current Applied Physics, 56, 119-125 (2023) [link]
[106] Kyoung Su Lee, Jaewon Oh, Hyunbok Lee, Mee-Yi Ryu*, Eun Kyu Kim*, "Effect of defect states on CH3NH3PbI3 solar cell efficiency by varying application time of antisolvents", Applied Physics A, 129, 615 (2023) [link]
[105] Minsoo Kim, Junkyeong Jeong, Gyeongho Hyun, Jae Ho Jeon, Sahng-Kyoon Jerng, Seung-Hyun Chun, Yeonjin Yi*, Hyunbok Lee*, "Work function tuning of directly grown graphene via ultraviolet-ozone treatment for electrode application in optoelectronic devices", Surfaces and Interfaces, 41, 103228 (2023) [link]
[104] Jaewon Oh, Hyunbok Lee, Mee-Yi Ryu*, "Enhancement of light-harvesting ability on perovskite films via preheated substrates", Applied Science and Convergence Technology (SCOPUS/ESCI), 32, 110-113 (2023) [link]
[103] Dong Su Shin+, Young Jae Park+, Jae Hyeon Lee, Ji-Yeon Kim, Hyunbok Lee, Kitae Kim, Yeonjin Yi, Ji Eon Kwon, Kyunam Lee, Soo Young Park, Sang-Youp Yim, Donghee Park*, Dong Ick Son*, "3PTZ and 3PXZ small molecular hole-transporting materials in polymer light-emitting diodes", Journal of Materials Chemistry C, 11, 8826-8837 (2023) [link]
[102] Hyunbok Lee*, "Thickness dependence of MoO3 hole injection layer on energy-level alignment with NPB hole transport layers in OLEDs", Applied Science and Convergence Technology (SCOPUS/ESCI), 32, 73-76 (2023) [link]
[101] Eunah Joo, Jin Woo Hur, Joon Young Ko, Tae Gyun Kim, Jung Yeon Hwang, Kevin E. Smith, Hyunbok Lee*, Sang Wan Cho*, "Effects of HAT-CN layer thickness on molecular orientation and energy-level alignment with ZnPc", Molecules, 28, 3821 (2023) [link]
[100] Sehyun Jung, Seungsun Choi, Woojin Shin, Hyesung Oh, Jaewon Oh, Mee-Yi Ryu, Wonsik Kim, Soohyung Park, Hyunbok Lee*, "Enhancement in power conversion efficiency of perovskite solar cells by reduced non-radiative recombination using a Brij C10-mixed PEDOT:PSS hole transport layer", Polymers, 15, 772 (2023) [link]
[99] Kiwoong Kim, Won Jae Chung, Junseop Lim, Kyu-Joon Lee, Hong-Hee Kim, Thorsten Schultz, Patrick Amsalem, Won-Kook Choi, Hong-Kyu Kim, Jae-Pyoung Ahn, Hyunbok Lee, Jun Yeob Lee*, Soohyung Park*, Yeonjin Yi*, "Degradation-induced energy level mismatch in cohost-dopant blue phosphorescent OLEDs after device operation", Applied Surface Science, 611, 155753 (2023) [link]
[98] Seungsun Choi, Wonsik Kim, Woojin Shin, Hye Ji Han, Chaeryeon Park, Hyesung Oh, Sehyun Jung, Soohyung Park, Hyunbok Lee*, "Electronic structure modification of polymeric PEDOT:PSS electrodes using the nonionic surfactant Brij C10 additive for significant sheet resistance reduction", Applied Surface Science, 610, 155609 (2023) [link]
[97] Wonsik Kim, Seungsun Choi, Woojin Shin, Jaewon Oh, Mee-Yi Ryu, Hyunbok Lee*, "Effects of stirring temperature of P3HT:PCBM solution on device performance of organic photovoltaics", Journal of the Korean Physical Society, 82, 199-203 (2023) [link]
[96] Seungsun Choi, Woojin Shin, Jaewon Oh, Mee-Yi Ryu, Hyunbok Lee*, "Enhancement in device performance of perovskite solar cells via annealing of PCBM electron transport layer", Applied Science and Convergence Technology (SCOPUS), 31, 167-170 (2022) [link]
[95] Jaewon Oh, Muntae Hwang, Hyunbok Lee, Mee-Yi Ryu*, "Guanidinium cation substitution effects on perovskite solar cells", Applied Science and Convergence Technology (SCOPUS), 31, 161-163 (2022) [link]
[94] Zhihui Chen+, Qi Li+, Yufeng Jiang, Hyunbok Lee, Thomas P. Russell, Yao Liu*, "Multi-site functional cathode interlayers for high-performance binary organic solar cells", Journal of Materials Chemistry A, 10, 16163-16170 (2022) [link]
[93] Yi Wang, Zhihui Chen*, Rui Yang, Namhee Kwon, Soohyung Park, Heung-Sik Kim, Hyunbok Lee*, Yao Liu*, "Nucleobase polymers promote low work function surfaces in organic electronics", Advanced Electronic Materials, 8, 2101316 (2022) [link]
[92] Kwanwook Jung, Soohyung Park, Jisu Yoo, Na Eun Jung, Byung Joon Moon, Sang Hyun Lee, Yeonjin Yi*, Hyunbok Lee*, "Elucidation of hole transport mechanism in efficient energy cascade organic photovoltaics using triple donor system", Applied Surface Science, 576, 151747 (2022) [link]
[91] Hyunbok Lee*, "Effects of surface contaminants on interface dipole formation of 8-hydroxyquinolinolato-lithium layer", Applied Science and Convergence Technology (SCOPUS), 31, 12-14 (2022) [link]
[90] Seong-Heum Park, Hyeong Seon Park, Hyunbok Lee*, Heung-Sik Kim*, "Iterative peak-fitting of frequency-domain data via deep convolution neural networks", Journal of the Korean Physical Society, 79, 1199-1208 (2021) [link]
[89] Woojin Shin, Hyesung Oh, Sehyun Jung, Gyun-Hui Kim, Haneul Lee, Minjeong Han, Hyunbok Lee*, "Characterization of a bar-coated graphene film from surfactant-added water dispersion", New Physics: Sae Mulli (SCOPUS), 71, 901-907 (2021) [link]
[88] Kiwoong Kim, Yeonjin Yi*, Hyunbok Lee*, "Hole injection improvement using ultrathin Li-TFSI layer in organic light-emitting diodes", Journal of the Korean Physical Society, 79, 961-965 (2021) [link]
[87] Yoo Kyung Park, Bo Kyung Ryu, Juhyeok Kim, Soryeong Yeo, Chang Suk Oh, Sang Wan Cho*, Hyunbok Lee*, Hirohito Ogasawara, "Electronic structure of Alq3 and Liq using soft X-ray spectroscopy and density functional theory calculation", Current Applied Physics, 30, 91-95 (2021) [link]
[86] Jaewon Oh, Woojin Shin, Hyunbok Lee, Mee-Yi Ryu*, "Antisolvent treatment of reproducible MAPbI3 perovskite solar cells in ambient atmosphere", Journal of the Korean Physical Society, 79, 741-745 (2021) [link]
[85] Woojin Shin, Wonsik Kim, Seungsun Choi, Jaewon Oh, Mee-Yi Ryu, Hyunbok Lee*, "Electronic structure of P3HT film oxidized by ultraviolet-ozone treatment", Journal of the Korean Physical Society, 79, 70-75 (2021) [link]
[84] Donghee Kang, Yeonjin Yi*, Hyunbok Lee*, "Effect of waiting time of indium tin oxide electrode in entry chamber on organic light-emitting diodes", Journal of the Korean Physical Society, 78, 810-815 (2021) [link]
[83] Sohyun Park, Seungsun Choi, Hyunchan Lee, Jiyeon Lee, Yunseo Woo, Yu-Jin Jung, Young Mee Jung, Junkyeong Jeong, Jeehong Park, Yeonjin Yi, Soohyung Park, Hyunbok Lee*, "Impact of gamma-ray irradiation on the electronic structures of PCBM and P3HT organic semiconductor films", Polymer Degradation and Stability, 186, 109518 (2021) [link]
[82] Wonsik Kim, Seungsun Choi, Woojin Shin, Jaewon Oh, Mee-Yi Ryu, Hyunbok Lee*, "Changes in the electronic structure of tetra-tert-butyl copper phthalocyanine film by ultraviolet-ozone treatment", Applied Science and Convergence Technology (SCOPUS), 30, 25-28 (2021) [link]
[81] Yoo Kyung Park, Chang Jin Lim, Yeong Ji Im, Soohaeng Cho, Sang Wan Cho*, Hyunbok Lee*, Hirohito Ogasawara, "Soft X-ray spectroscopic study on the electronic structure of WO3 thin films fabricated under various annealing temperature and gas flow conditions", Current Applied Physics, 21, 31-35 (2021) [link]
[80] Hyunbok Lee*, Younjoo Lee, Donghee Kang, Yeonjin Yi*, Sang Wan Cho*, "In situ photoelectron spectroscopy and theoretical calculation study of thermally evaporated copper naphthalocyanine", Science of Advanced Materials, 12, 1413-1419 (2020) [link]
[79] Hyeong Seon Park, Seong-Heum Park, Hyunbok Lee, Heung-Sik Kim*, "Deep learning applied in peak fitting of spectroscopic data in frequency domain", New Physics: Sae Mulli (SCOPUS), 70, 920-927 (2020) [link]
[78] Hyunbok Lee*, "Effect of sulfur substitution on charge transport ability of benzopyrazine-fused tetracene derivatives: A theoretical study", Applied Science and Convergence Technology (SCOPUS), 29, 149-153 (2020) [link]
[77] Seungsun Choi, Wonsik Kim, Woojin Shin, Jaewon Oh, Sila Jin, Young Mee Jung, Mee-Yi Ryu, Hyunbok Lee*, "Effects of UV-ozone treatment on the electronic structures of F8BT and PFO polymeric thin films", Current Applied Physics, 20, 1359-1365 (2020) [link]
[76] Donghee Kang, Dongguen Shin, Kyu-Joon Lee, Soohyung Park, Jae-Pyoung Ahn, Junkyeong Jeong, Jisu Yoo, Kiwoong Kim, Hyunbok Lee*, Yeonjin Yi*, "Origin of temperature-dependent performance of hole-transport-layer-free perovskite solar cells doped with CuSCN", Organic Electronics, 87, 105958 (2020) [link]
[75] Young Jae Park+, Jaeho Shim+, Kyu Seung Lee+, Won Ki Lee, Jun Yeon Hwang, Hyunbok Lee, Yeonjin Yi, Basavaraj Angadi, Won Kook Choi, Dong Ick Son*, "Direct conjugation with a zero length linker of fullerene C70 to ZnO quantum dots for multicolor light-emitting diodes", Materials Horizons, 7, 1533-1541 (2020) [link]
[74] Sohyun Park, Hyunchan Lee, Hyunbok Lee*, Dongguen Shin, Yeonjin Yi, "Impact of diethyl ether dripping delay time on the electronic structure of methylammonium lead triiodide perovskite film", Journal of the Korean Physical Society, 76, 162-166 (2020) [link]
[73] Hyunchan Lee, Sohyun Park, Il-Wook Cho, Mee-Yi Ryu, Donghee Kang, Yeonjin Yi, Hyunbok Lee*, "Metal-electrode-free inverted organic photovoltaics using electrospray-deposited PEDOT:PSS and spin-coated HAT-CN exciton blocking layer", Current Applied Physics, 20, 277-281 (2020) [link]
[72] Seungsun Choi, Wonsik Kim, Woojin Shin, Sohyun Park, Hyunbok Lee*, "Effect of deposition sequence in dual anode buffer layer in inverted organic photovoltaics", Applied Science and Convergence Technology (KCI), 28, 217-220 (2019) [link]
[71] Gyeongho Hyun, Sungmoon Kim, Jonginn Im, Younghyuck Na, Kwangho Jeong*, Hyunbok Lee*, Yeonjin Yi*, "Molecular flux distribution from the thermal evaporation source using Monte Carlo method: The importance of interparticle collision", Current Applied Physics, 19, 1233-1237 (2019) [link]
[70] Junkyeong Jeong, Donghee Kang, Do Hyung Chun, Dongguen Shin, Jong Hyeok Park, Sang Wan Cho, Kwangho Jeong*, Hyunbok Lee*, Yeonjin Yi*, "Unveiling the origin of performance reduction in perovskite solar cells with TiO2 electron transport layer: Conduction band minimum mismatches and chemical interactions at buried interface", Applied Surface Science, 495, 143490 (2019) [link]
[69] Dongguen Shin, Donghee Kang, Jae-Bok Lee, Jong-Hyun Ahn, Il-Wook Cho, Mee-Yi Ryu, Sang Wan Cho, Na Eun Jung, Hyunbok Lee*, Yeonjin Yi*, "Electronic structure of nonionic surfactant-modified PEDOT:PSS and its application in perovskite solar cells with reduced interface recombination", ACS Applied Materials & Interfaces, 11, 17028-17034 (2019) [link]
[68] Hyunchan Lee, Junkyeong Jeong, Yeonjin Yi, Hyunbok Lee*, "Electronic structure and Fermi-level pinning of indigo for application in environment-friendly devices", Applied Surface Science, 484, 808-813 (2019) [link]
[67] Minju Kim, Han-gyu Kim, Soohyung Park, Jin Sung Kim, Hyoung Joon Choi, Seongil Im, Hyunbok Lee, Taekyeong Kim*, Yeonjin Yi*, "Intrinsic correlation between electronic structure and degradation: From few layers to bulk black phosphorous" (inside back cover), Angewandte Chemie-International Edition, 58, 3754-3758 (2019) [link]
[66] Kiwoong Kim, Junkyeong Jeong, Minju Kim, Donghee Kang, Sang Wan Cho, Hyunbok Lee*, Yeonjin Yi*, "Direct p-doping of Li-TFSI for efficient hole injection: Role of polaronic level in molecular doping", Applied Surface Science, 480, 565-571 (2019) [link]
[65] Jisu Yoo, Junkyeong Jeong, Kwanwook Jung, Gyeongho Hyun, Minju Kim, Hyunbok Lee*, Yeonjin Yi*, "Electronic structure of Ba(OH)2 interface in inverted organic photovoltaics: Improved electron transport by charged state of C60", Applied Surface Science, 476, 435-441 (2019) [link]
[64] Hyunbok Lee, Junkyeong Jeong, Jiyeon Lee, Hyunchan Lee, Gyeongho Hyun, Yeonjin Yi*, Sang Wan Cho*, "Paradoxical hole injection enhancement by contamination on the indium tin oxide surface", Japanese Journal of Applied Physics, 58, 021004 (2019) [link]
[63] Hyunbok Lee*, "Theoretical study on electronic structure and charge transport characteristics of anthracene-based host material for blue organic light-emitting diode application", Applied Science and Convergence Technology (KCI), 27, 161-165 (2018) [link]
[62] Jack Ly, Edmund K. Burnett, Simil Thomas, Areej Aljarb, Yao Liu, Soohyung Park, Stephen Rosa, Yeonjin Yi, Hyunbok Lee, Todd Emrick, Thomas P. Russell, Jean-Luc Brédas*, Alejandro L. Briseno*, "Efficient electron mobility in an all-acceptor naphthalenediimide-bithiazole polymer semiconductor with large backbone torsion", ACS Applied Materials & Interfaces, 10, 40070-40078 (2018) [link]
[61] Kyu Seung Lee,+ Jaeho Shim+, Hyunbok Lee, Sang-Youp Yim, Basavaraj Angadi, Byungkwon Lim, Dong Ick Son*, "Unveiling the composites structures of emissive consolidated p-i-n junction nanocells for white light emission", Nanoscale, 10, 13867-13874 (2018) [link]
[60] Junkyeong Jeong, Jiyeon Lee, Hyunchan Lee, Gyeongho Hyun, Soohyung Park, Yeonjin Yi, Sang Wan Cho, Hyunbok Lee*, "Energy level alignment and hole injection property of poly(9-vinylcarbazole)/indium tin oxide interface", Chemical Physics Letters, 706, 317-322 (2018) [link]
[59] Hyounggi Kim, Hyunchan Lee, Hyunbok Lee*, "Fabrication of poly(3-hexylthiophene-2,5-diyl) films with electrospray deposition method", Japanese Journal of Applied Physics, 57, 071601 (2018) [link]
[58] Hyunbok Lee*, "Effect of nitrogen substitution in nonlinear thienoacene: Theoretical study on charge transport properties in organic field-effect transistors", Science of Advanced Materials, 10, 989-994 (2018) [link]
[57] Jack Ly, Steven Lopez, Janice B. Lin, Jae Joon Kim, Hyunbok Lee, Edmund K. Burnett, Lei Zhang*, Alán Aspuru-Guzik, Kendall N. Houk*, Alejandro Briseno*, "Oxidation of rubrene, and implications for device stability", Journal of Materials Chemistry C, 6, 3757-3761 (2018) [link]
[56] Chang Jin Lim, Min Gyu Park, Min Su Kim, Jeong Hwa Han, Soohaeng Cho, Mann-Ho Cho, Yeonjin Yi, Hyunbok Lee, Sang Wan Cho*, "Electronic structure of C60/zinc phthalocyanine/V2O5 interfaces studied using photoemission spectroscopy for organic photovoltaic applications", Molecules, 23, 449 (2018) [link]
[55] Hyunbok Lee, Sun Woo Ahn, Sim Hee Ryu, Bo Kyung Ryu, Myeung Hee Lee, Sang Wan Cho*, Kevin E. Smith, Tim S. Jones, "Interfacial electronic structure of Cl6SubPc non-fullerene acceptors in organic photovoltaics using soft X-ray spectroscopies", Physical Chemistry Chemical Physics, 19, 31628-31633 (2017) [link]
[54] Hyunchan Lee, Hyunbok Lee*, "Influence of molecular orientation on pentacene mobility: A theoretical study" (highlight paper), New Physics: Sae Mulli (SCOPUS), 67, 1193-1199 (2017) [link]
[53] Sang Woo Kwak+, Kang Mun Lee+, Ji-Eun Lee, Jisu Yoo, Yeonjin Yi, Hyoshik Kwon, Hyunbok Lee*, Myung Hwan Park*, Yongseog Chung*, "Synthesis and electroluminescence properties of 3-(trifluoromethyl)phenyl-substituted 9,10-diarylanthracene derivatives for blue organic light-emitting diodes", Applied Sciences, 7, 1109 (2017) [link]
[52] Dongguen Shin, Donghee Kang, Junkyeong Jeong, Soohyung Park, Minju Kim, Hyunbok Lee*, Yeonjin Yi*, "Unraveling the charge extraction mechanism of perovskite solar cells fabricated with two-step spin coating: Interfacial energetics between methylammonium lead iodide and C60", Journal of Physical Chemistry Letters, 8, 5423-5429 (2017) [link]
[51] Gyeongho Hyun, Dongguen Shin, Hyunbok Lee*, Yeonjin Yi*, "Enhancing the performance of inverted organic photovoltaics using cathode interlayers based on solution-processable tetrabutylammonium halides", Physica Status Solidi-Rapid Research Letters, 11, 1700250 (2017) [link]
[50] Yungsik Youn, Kwanwook Jung, Younjoo Lee, Soohyung Park, Hyunbok Lee*, Yeonjin Yi*, "Electronic structures of nucleosides as promising functional materials for electronic devices", Journal of Physical Chemistry C, 121, 12750-12756 (2017) [link]
[49] Gyeongho Hyun, Soohyung Park, Junkyeong Jeong, Kyu Seung Lee, Dong Ick Son, Hyunbok Lee*, Yeonjin Yi*, "Unveiling the electronic structure of ZnO-C60 core-shell quantum dots: The origin of efficient electron transport", Journal of Physical Chemistry C, 121, 12230-12235 (2017) [link]
[48] Byung Joon Moon+, Dawon Jang+, Yeonjin Yi, Hyunbok Lee, Sang Jin Kim, Yelin Oh, Sang Hyun Lee, Min Park, Sungho Lee*, Sukang Bae*, "Multi-functional nitrogen self-doped graphene quantum dots for boosting the photovoltaic performance of BHJ solar cells", Nano Energy, 34, 36-46 (2017) [link]
[47] Jisu Yoo, Kwanwook Jung, Junkyeong Jeong, Gyeongho Hyun, Hyunbok Lee*, Yeonjin Yi*, "Energy level alignment at C60/DTDCTB/PEDOT:PSS interfaces in organic photovoltaics", Applied Surface Science, 402, 41-46 (2017) [link]
[46] Aaron W. Chen, Bing Fang, Hyunbok Lee, Alejandro L. Briseno, Maria M. Santore*, "Evidence of negative charge area near large area supported graphene in water: A study of silica microsphere interactions", Journal of Colloid and Interface Science, 492, 15-24 (2017) [link]
[45] Eonseok Oh+, Soohyung Park+, Junkyeong Jeong, Seong Jun Kang, Hyunbok Lee*, Yeonjin Yi*, "Energy level alignment at the interface of NPB/HAT-CN/graphene for flexible organic light-emitting diodes", Chemical Physics Letters, 668, 64-68 (2017) [link]
[44] Hyunbok Lee, Sang Wan Cho*, "Effect of Ar ion sputtering on the surface electronic structure of indium tin oxide", Applied Science and Convergence Technology (KCI), 25, 128-132 (2016) [link]
[43] Hyunbok Lee, Yunwoo Jung, Nalae Lee, Jonghoon Kim, Sang Wan Cho*, Dave Newby Jr., Keven E. Smith, "Interfacial electronic structure of C60/chloro-aluminum phthalocyanine on a PTCDA layer for organic photovoltaic devices", Science of Advanced Materials, 8, 1795-1798 (2016) [link]
[42] David Leonardo Gonzalez Arellano*, Hyunbok Lee, Ethan B. Secor, Edmund K. Burnett, Mark C. Hersam, James J. Watkins, Alejandro L. Briseno, "Graphene ink as a conductive templating interlayer for enhanced charge transport of C60-based devices", ACS Applied Materials & Interfaces, 8, 29594-29599 (2016) [link]
[41] Soohyung Park, Junkyeong Jeong, Gyeongho Hyun, Minju Kim, Hyunbok Lee*, Yeonjin Yi*, "The origin of high PCE in PTB7 based photovoltaics: Proper charge neutrality level and free energy of charge separation at PTB7/PC71BM interface", Scientific Reports, 6, 35262 (2016) [link]
[40] Hyunbok Lee, Sang Wan Cho*, Yeonjin Yi*, "Interfacial electronic structure for high performance organic devices" (invited review paper), Current Applied Physics, 7, 1533-1549 (2016) [link]
[39] Minju Kim, Soohyung Park, Junkyeong Jeong, Dongguen Shin, Jimin Kim, Sae Hee Ryu, Keun Su Kim, Yeonjin Yi*, Hyunbok Lee*, "Band-tail transport of CuSCN: Origin of hole extraction enhancement in organic photovoltaics", Journal of Physical Chemistry Letters, 7, 2856-2861 (2016) [link]
[38] Kwanwook Jung, Soohyung Park, Younjoo Lee, Yungsik Youn, Hae-In Shin, Han-Ki Kim, Hyunbok Lee*, Yeonjin Yi*, "Energy level alignments at the interface of N,N'-bis-(1-naphthyl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine (NPB)/Ag-doped In2O3 and NPB/Sn-doped In2O3", Applied Surface Science, 387, 625-630 (2016) [link]
[37] Hyunbok Lee*, John C. Stephenson, Lee J. Richter*, Christopher R. McNeil, Eliot Gann, Lars Thomsen, Soohyung Park, Junkyeong Jeong, Yeonjin Yi, Dean M. DeLongchamp, Zachariah A. Page, Egle Puodziukynaite, Todd Emrick, Alejandro L. Briseno*, "The structural origin of electron injection enhancements with fulleropyrrolidine interlayers", Advanced Materials Interfaces, 3, 1500852 (2016) [link]
[36] Soohyung Park, Yeonjin Yi, Sang Wan Cho, Hyunbok Lee*, "Work function reduction using 8-hydroxyquinolinolato-lithium for efficient inverted devices", Chemical Physics Letters, 652, 102-105 (2016) [link]
[35] Joaquin Resasco, Hao Zhang, Nikolay Kornienko, Nigel Becknell, Hyunbok Lee, Jinghua Guo, Alejandro L. Briseno, Peidong Yang*, "TiO2/BiVO4 nanowire heterostructure photoanodes based on type II band alignment", ACS Central Science, 2, 80-88 (2016) [link]
[34] Jeihyun Lee+, Soohyung Park+, Younjoo Lee, Hyein Kim, Dongguen Shin, Junkyeong Jeong, Kwangho Jeong, Sang Wan Cho, Hyunbok Lee*, Yeonjin Yi*, "Electron transport mechanism of bathocuproine exciton blocking layer in organic photovoltaics", Physical Chemistry Chemical Physics, 18, 5444-5452 (2016) [link]
[33] Junkyeong Jeong, Soohyung Park, Seong Jun Kang, Hyunbok Lee*, Yeonjin Yi*, "Impacts of molecular orientation on the hole injection barrier reduction: CuPc/HAT-CN/graphene", Journal of Physical Chemistry C, 120, 2292-2298 (2016) [link]
[32] Tae Gun Kim, Hyunbok Lee, Yeonjin Yi, Seung Mi Lee, Jeong Won Kim*, "Interfacial chemical reaction and multiple gap state formation on three layer cathode in organic light-emitting diode: Ca/BaF2/Alq3", Journal of Applied Physics, 118, 025502 (2015) [link]
Before KNU (~2015)
[31] Guillaume Gruntz, Hyunbok Lee, Lionel Hirsch, Frédéric Castet, Thierry Toupance, Alejandro L. Briseno, Yohann Nicolas*, "Nitrile substitution effect on triphenodioxaine-based materials for liquid-processed air-stable n-type organic field effect transistors", Advanced Electronic Materials, 1, 1500072 (2015) [link]
[30] Yao Liu, Lei Zhang, Hyunbok Lee, Hsin-Wei Wang, Annikki Santala, Feng Liu, Ying Diao, Alejandro L. Briseno*, Thomas P. Russell*, "NDI-based small molecule as promising nonfullerene acceptor for solution-processed organic photovoltaics", Advanced Energy Materials, 5, 1500195 (2015) [link]
[29] Hyunbok Lee, Jeihyun Lee, Yeonjin Yi*, Sang Wan Cho, Jeong Won Kim, "Anomalous hole injection deterioration of organic light-emitting diodes with a manganese phthalocyanine layer", Journal of Applied Physics, 117, 035503 (2015) [link]
[28] Hyunbok Lee, Egle Puodziukynaite, Yue Zhang, John C. Stephenson, Lee J. Richter, Daniel A. Fischer, Dean M. DeLongchamp, Todd Emrick*, Alejandro L. Briseno*, "Poly(sulfobetaine methacrylate)s as electrode modifiers for inverted organic electronics", Journal of the American Chemical Society, 137, 540-549 (2015) [link]
[27] Hyunbok Lee, Sang Wan Cho*, "A study on the thermal oxidation and wettability of lead-free solders of Sn-Ag-Cu and Sn-Ag-Cu-In", Applied Science and Convergence Technology (KCI), 23, 345-350 (2014) [link]
[26] Soohyung Park, Hyunbok Lee, Jeihyun Lee, Younjoo Lee, Yeonjin Yi*, "Electronic structures of CuI interlayers in organic electronic devices: An interfacial studies of N,N'-diphenyl-N,N'-bis(1-naphthyl)-1,1'-biphenyl-4,4'-diamine/CuI and tris-(8-hydroxyquinolato) aluminum/CuI", Organic Electronics, 15, 3298-3305 (2014) [link]
[25] Yue Zhang, Ying Diao, Hyunbok Lee, Timothy J. Mirabito, Richard W. Johnson, Egle Puodziukynaite, Jacob John, Kenneth R. Carter, Todd Emrick, Stefan C. B. Mannsfeld, Alejandro L. Briseno*, "Intrinsic and extrinsic parameters for controlling the growth of organic single-crystalline nanopillars in photovoltaics", Nano Letters, 14, 5547-5554 (2014) [link]
[24] Hyunbok Lee, Yeonjin Yi*, Sang Wan Cho*, Won Kook Choi, "Theoretical investigation of the electronic and charge transport characteristics of push-pull molecules for organic photovoltaic cells", Synthetic Metals, 194, 118-125 (2014) [link]
[23] Lei Zhang, Alexandr Fonari, Yao Liu, Andra-Lisa M. Hoyt, Hyunbok Lee, Devin Granger, Sean Parkin, Thomas P. Russell, John E. Anthony, Jean-Luc Brédas, Veaceslav Coropceanu, Alejandro L. Briseno*, "Bistetracene: An air-stable, high-mobility organic semiconductor with extended conjugation", Journal of the American Chemical Society, 136, 9248-9251 (2014) [link]
[22] Hyunbok Lee, Sang Wan Cho*, Sang Han Park, Mann-Ho Cho, Yeonjin Yi, "Electronic structure of low work function electrodes modified by C16H33SH", Materials Research Bulletin, 58, 19-23 (2014) [link]
[21] Dongguen Shin, Jeihyun Lee, Hyunbok Lee, Hyein Kim, Yeonjin Yi*, "Evidence of the changes in hole injection mechanism with a CoPc hole injection layer", Current Applied Physics, 14, 778-783 (2014) [link]
[20] Hyunbok Lee, Jeihyun Lee, Soohyung Park, Yeonjin Yi*, Sang Wan Cho, Jeong Won Kim, Seong Jun Kang, "Hole injection enhancement of a single-walled carbon nanotube anode using an organic charge-generation layer", Carbon, 71, 268-275 (2014) [link]
[19] Sujun Wei, Jianlong Xia, Emma J. Dell, Yivan Jiang, Rui Song, Hyunbok Lee, Philip Rodenbough, Alejandro L. Briseno, Luis M. Campos*, "Bandgap engineering through controlled oxidation of polythiophenes" (inside back cover), Angewandte Chemie-International Edition, 53, 1832-1836 (2014) [link]
[18] Hyunbok Lee, Yue Zhang, Lei Zhang, Timothy Mirabito, Edmund K. Burnett, Stefan Trahan, Ali Reza Mohebbi, Stefan C. B, Mannsfeld, Fred Wudl, Alejandro L. Briseno*, "Rubicene: A molecular fragment of C70 for use in organic field-effect transistors" (inside back cover), Journal of Materials Chemistry C, 2, 3361-3366 (2014) [link]
[17] Hyunbok Lee, Soohyung Park, Jeihyun Lee, Younjoo Lee, Dongguen Shin, Kwangho Jeong, Yeonjin Yi*, "Strong interfacial dipole formation with thermal evaporation of lithium cobalt oxide for efficient electron injections", Applied Physics Letters, 102, 033302 (2013) [link]
[16] Younjoo Lee, Hyunbok Lee, Soohyung Park, Yeonjin Yi*, "Energy level alignment at the interfaces between typical electrodes and nucleobases: Al/adenine/indium-tin-oxide and Al/thymine/indium-tin-oxide", Applied Physics Letters, 101, 233305 (2012) [link]
[15] Dong Ick Son, Byoung Wook Kwon, Jeong Do Yang, Dong Hee Park, Won Seon Seo, Hyunbok Lee, Yeonjin Yi, Chang Lyoul Lee, Won Kook Choi*, "Charge separation and ultraviolet photovoltaic conversion of ZnO quantum dots conjugated with graphene nanoshells", Nano Research, 5, 747-761 (2012) [link]
[14] Hyunbok Lee, Kwangho Jeong, Sang Wan Cho*, Yeonjin Yi*, "Theoretical study of the effects on nitrogen and methyl substitution on tris-(8-hydroxyquinoline) aluminum: An efficient exciton blocking layer for organic photovoltaic cells", Journal of Chemical Physics, 137, 034707 (2012) [link]
[13] Hyunbok Lee, Jeihyun Lee, Kwangho Jeong, Yeonjin Yi*, Jung Han Lee, Jeong Won Kim, Sang Wan Cho, "Hole injection enhancements of a CoPc and CoPc:NPB mixed layer in organic light-emitting devices", Journal of Physical Chemistry C, 116, 13210-13216 (2012) [link]
[12] Jeihyun Lee, Hyunbok Lee, Pyungeun Jeon, Kwangho Jeong, Tae Gun Kim, Jeong Won Kim, Yeonjin Yi*, "Direct evidence of n-type doping in organic light-emitting devices: N free Cs doping from CsN3", Applied Physics Letters, 100, 203301 (2012) [link]
[11] Pyungeun Jeon, Seong Jun Kang, Hyunbok Lee, Jeihyun Lee, Kwangho Jeong, JinWoo Lee, Yeonjin Yi*, "Different contact formation at the interfaces of C60/LiF/Al and C60/LiF/Ag", Journal of Applied Physics, 111, 073111 (2012) [link]
[10] Hyunbok Lee, Sang Wan Cho, Jeihyun Lee, Pyung Eun Jeon, Kwangho Jeong, Jin Woo Lee, Yeonjin Yi*, "The reduction of effective doping with extra dopant: N-type doping of tris(8-hydroxyquinoline) aluminum with K", Journal of Applied Physics, 111, 043712 (2012) [link]
[9] Hyunbok Lee, Jeihyun Lee, Pyungeun Jeon, Kwangho Jeong, Yeonjin Yi*, Tae Gun Kim, Jeong Won Kim, Jin Woo Lee, "Highly enhanced electron injection in organic light-emitting diodes with an n-type semiconducting MnO2 layer", Organic Electronics, 13, 820-825 (2012) [link]
[8] Pyungeun Jeon, Hyunbok Lee, Jeihyun Lee, Kwangho Jeong, JinWoo Lee, Yeonjin Yi*, "Interface state and dipole assisted hole injection improvement with 1,4,5,8-naphthalene-tetracarboxylic-dianhydride in organic light-emitting devices", Applied Physics Letters, 99, 073305 (2011) [link]
[7] Hyun Sung Kim, Hyunbok Lee, Pyung Eun Jeon, Kwangho Jeong, Jung Han Lee, Yeonjin Yi*, "Revised hole injection mechanism of a thin LiF layer introduced between pentacene and an indium tin oxide anode", Journal of Applied Physics, 108, 053701 (2010) [link]
[6] Pyung Eun Jeon, Kyul Han, Hyunbok Lee, Hyun Sung Kim, Kwangho Jeong, Kwanghee Cho, Sang Wan Cho, Yeonjin Yi*, "The origin of hole injection improvements with MoO3/Al bilayer electrodes in pentacene thin-film transistors", Synthetic Metals, 159, 2502-2505 (2009) [link]
[5] Yeonjin Yi*, Pyung Eun Jeon, Hyunbok Lee, Kyul Han, Hyun Sung Kim, Kwangho Jeong, Sang Wan Cho, "The interface state assisted charge transport at the MoO3/metal interface", Journal of Chemical Physics, 130, 094704 (2009) [link]
[4] Kwanghee Cho, Sang Wan Cho, Pyung Eun Jeon, Hyunbok Lee, Chung-Nam Whang, Kwangho Jeong, Seong Jun Kang, Yeonjin Yi*,"Electronic structure of 8-hydroquinolatolithium on Au substrate: The organic electron injection layer having semiconducting properties", Synthetic Metals, 158, 984-987 (2008) [link]
[3] Hyunbok Lee, Sang Wan Cho, Kyul Han, Pyung Eun Jeon, Chung-Nam Whang, Kwangho Jeong, Kwanghee Cho, Yeonjin Yi*, "The origin of the hole injection improvements at indium tin oxide/molybdenum trioxide/N,N'-bis(1-naphthyl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine interfaces", Applied Physics Letters, 93, 043308 (2008) [link]
[2] Kwanghee Cho, Sang Wan Cho, Pyung Eun Jeon, Hyunbok Lee, Chung-Nam Whang, Kwangho Jeong, Seong Jun Kang, Yeonjin Yi*,"Energy level alignments at tris(8-hydroquinoline) aluminum/8-hydroquinolatolithium/aluminum Interfaces", Applied Physics Letters, 92, 093304 (2008) [link]
[1] Kyul Han*, Yeonjin Yi*, Won Jun Song, Sang Wan Cho, Pyung Eun Jeon, Hyunbok Lee, Chung-Nam Whang, Kwangho Jeong, "Dual enhancing properties of LiF with varying positions inside organic light-emitting devices", Organic Electronics, 9, 30-38 (2008) [link]