Publications
[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), 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), 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), 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), 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-Basel, 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]