Search Results - "Kim, Gee Yeong"

Large tunable photoeffect on ion conduction in halide perovskites and implications for photodecomposition by Kim, Gee Yeong, Senocrate, Alessandro, Yang, Tae-Youl, Gregori, Giuliano, Grätzel, Michael, Maier, Joachim

“…In the same way as electron transport is crucial for information technology, ion transport is a key phenomenon in the context of energy research. To be able to…”
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Photo‐Effect on Ion Transport in Mixed Cation and Halide Perovskites and Implications for Photo‐Demixing by Kim, Gee Yeong, Senocrate, Alessandro, Wang, Ya‐Ru, Moia, Davide, Maier, Joachim

“…Lead halide perovskites are considered to be most promising photovoltaic materials. Highest efficiency and improved stability of perovskite solar cells have…”
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The Nature of Ion Conduction in Methylammonium Lead Iodide: A Multimethod Approach by Senocrate, Alessandro, Moudrakovski, Igor, Kim, Gee Yeong, Yang, Tae‐Youl, Gregori, Giuliano, Grätzel, Michael, Maier, Joachim

“…By applying a multitude of experimental techniques including 1H, 14N, 207Pb NMR and 127I NMR/NQR, tracer diffusion, reaction cell and doping experiments, as…”
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Ionically Generated Built‐In Equilibrium Space Charge Zones—a Paradigm Change for Lead Halide Perovskite Interfaces by Kim, Gee Yeong, Senocrate, Alessandro, Moia, Davide, Maier, Joachim

“…Methylammonium lead iodide (MAPI) is the archetype of the intensively researched class of perovskites for photovoltaics. Nonetheless, even equilibrium aspects…”
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Photo de-mixing in mixed halide perovskites: the roles of ions and electrons by Wang, Ya-Ru, Yeong Kim, Gee, Kotomin, Eugene, Moia, Davide, Maier, Joachim

“…Abstract Mixed halide perovskites have attracted great interest for applications in solar cells, light emitting diodes and other optoelectronic devices due to…”
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Autonomous Control of Ion Migration at α‐FAPbI3 Heterointerfaces via Interfacial‐Self‐Assembled 2D Perovskite by Kim, Jihyun, Park, Ji‐Sang, Kim, Gee Yeong, Jo, William

“…Harmonizing homogeneity in charge distribution within metal halide perovskite solar cells is essential for maintaining device quality. The adsorption of ions…”
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Ionically Generated Built‐In Equilibrium Space Charge Zones—a Paradigm Change for Lead Halide Perovskite Interfaces by Kim, Gee Yeong, Senocrate, Alessandro, Moia, Davide, Maier, Joachim

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Charge carrier chemistry in methylammonium lead iodide by Senocrate, Alessandro, Yang, Tae-Youl, Gregori, Giuliano, Kim, Gee Yeong, Grätzel, Michael, Maier, Joachim

“…Both electronic and ionic transport properties are key issues in the performance of perovskite solar cells. In order to understand the electrical behavior of…”
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Cs‐treatments in Kesterite Thin‐Film Solar Cells for Efficient Perovskite Tandems by Hwang, Sun Kyung, Park, So Jeong, Park, Jae Hyun, Yoon, Joo Ho, Yu Cho, Jae, Cho, Deok Ki, Heo, Jaeyeong, Kim, Gee Yeong, Kim, Jin Young

“…Cu2ZnSn(S,Se)4 (CZTSSe) thin film solar cells are an attractive choice for a bottom cell of the low‐cost and environmental tandem solar cells with perovskite…”
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Cs‐treatments in Kesterite Thin‐Film Solar Cells for Efficient Perovskite Tandems (Small 16/2024) by Hwang, Sun Kyung, Park, So Jeong, Park, Jae Hyun, Yoon, Joo Ho, Yu Cho, Jae, Cho, Deok Ki, Heo, Jaeyeong, Kim, Gee Yeong, Kim, Jin Young

“…Thin‐Film Solar Cells A facile CsF treatment enhances CZTSSe grain growth and phase homogeneity, resulting in effective charge transport and a favorable P‐N…”
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Photo De‐Mixing in Dion‐Jacobson 2D Mixed Halide Perovskites by Wang, Ya‐Ru, Senocrate, Alessandro, Mladenović, Marko, Dučinskas, Algirdas, Kim, Gee Yeong, Rothlisberger, Ursula, Milić, Jovana V., Moia, Davide, Grätzel, Michael, Maier, Joachim

“…2D halide perovskites feature a versatile structure, which not only enables the fine‐tuning of their optoelectronic properties but also makes them appealing as…”
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Transparent back‐junction control in Cu(In,Ga)Se 2 absorber for high‐efficiency, color‐neutral, and semitransparent solar module by Jeong, Ahrum, Choi, Jae Myung, Lee, Hyun‐Jae, Kim, Gee Yeong, Park, Jong‐Keuk, Kim, Won Mok, Kuk, Seungkuk, Wang, Zhen, Hwang, David J., Yu, Hyeonggeun, Jeong, Jeung‐hyun

“…Abstract Transparent oxide back contact of Cu(In,Ga)Se 2 (CIGS) solar cells is crucial for semitransparent or bifacial CIGS photovoltaics. Parasitic GaO x…”
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Efficient Carrier Separation and Intriguing Switching of Bound Charges in Inorganic–Organic Lead Halide Solar Cells by Kim, Gee Yeong, Oh, Seol Hee, Nguyen, Bich Phuong, Jo, William, Kim, Byeong Jo, Lee, Dong Geon, Jung, Hyun Suk

“…We fabricated a mesoporous perovskite solar cell with a ∼14% conversion efficiency, and we investigated its beneficial grain boundary properties of the…”
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Transparent back‐junction control in Cu(In,Ga)Se2 absorber for high‐efficiency, color‐neutral, and semitransparent solar module by Jeong, Ahrum, Choi, Jae Myung, Lee, Hyun‐Jae, Kim, Gee Yeong, Park, Jong‐Keuk, Kim, Won Mok, Kuk, Seungkuk, Wang, Zhen, Hwang, David J., Yu, Hyeonggeun, Jeong, Jeung‐hyun

“…Transparent oxide back contact of Cu(In,Ga)Se2 (CIGS) solar cells is crucial for semitransparent or bifacial CIGS photovoltaics. Parasitic GaOx resistive layer…”
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Surface potential on grain boundaries and intragrains of highly efficient Cu2ZnSn(S,Se)4 thin-films grown by two-step sputtering process by GEE YEONG KIM, AH REUM JEONG, JU RI KIM, JO, William, SON, Dae-Ho, KIM, Dae-Hwan, KANG, Jin-Kyu

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Factors influencing halide vacancy transport in perovskite solar cells by Woo, Young Won, Jung, Young-Kwang, Kim, Gee Yeong, Kim, Sunghyun, Walsh, Aron

“…Ion migration in inorganic and hybrid organic-inorganic metal halide perovskites causes unusual phenomena in photovoltaic devices, such as current-voltage…”
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Composition variations in Cu2ZnSnSe4 thin films analyzed by X-ray diffraction, energy dispersive X-ray spectroscopy, particle induced X-ray emission, photoluminescence, and Raman spectroscopy by Nam, Dahyun, Opanasyuk, A.S., Koval, P.V., Ponomarev, A.G., Jeong, Ah Reum, Kim, Gee Yeong, Jo, William, Cheong, Hyeonsik

“…Compositional and structural studies of Cu2ZnSnSe4 (CZTSe) thin films were carried out by X-ray diffraction, energy dispersive X-ray spectroscopy (EDS),…”
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Importance of Low Humidity and Selection of Halide Ions of Octylammonium Halide in 2D–3D Perovskite Solar Cells Fabricated in Air by Kwon, Su Yeon, Kang, Byungsoo, Won, Jong Hyeon, Lee, Chae Young, Hwang, Kahee, Kim, Hong Hee, Park, Donghee, Choi, Won Kook, Kim, In Soo, Kim, Gee Yeong, Jang, Yoon Hee, Lee, Phillip, Im, Sang Hyuk, Kim, Taehee

“…Air fabrication of efficient and stable perovskite solar cells with substantial reproducibility is of importance for commercialization of perovskite solar…”
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Photo‐Effect on Ion Transport in Mixed Cation and Halide Perovskites and Implications for Photo‐Demixing by Kim, Gee Yeong, Senocrate, Alessandro, Wang, Ya‐Ru, Moia, Davide, Maier, Joachim

“…Lead halide perovskites are considered to be most promising photovoltaic materials. Highest efficiency and improved stability of perovskite solar cells have…”
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Enhancement of photo-conversion efficiency in Cu2ZnSn(S,Se)4 thin-film solar cells by control of ZnS precursor-layer thickness by Kim, Gee Yeong, Son, Dae-Ho, Thi Thu Nguyen, Trang, Yoon, Seokhyun, Kwon, Minsu, Jeon, Chan-Wook, Kim, Dae-Hwan, Kang, Jin-Kyu, Jo, William

“…CZTSSe thin‐film absorbers were grown by stacked ZnS/SnS/Cu sputtering with compound targets, and the precursors were annealed in a furnace with a Se…”
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