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Chungseok Choi
Researcher at University of California, Los Angeles
Publications - 19
Citations - 1772
Chungseok Choi is an academic researcher from University of California, Los Angeles. The author has contributed to research in topics: Perovskite (structure) & Formamidinium. The author has an hindex of 11, co-authored 19 publications receiving 977 citations. Previous affiliations of Chungseok Choi include SK Hynix & KAIST.
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Journal ArticleDOI
2D perovskite stabilized phase-pure formamidinium perovskite solar cells
Jin-Wook Lee,Zhenghong Dai,Tae Hee Han,Chungseok Choi,Sheng-Yung Chang,Sung-Joon Lee,Nicholas De Marco,Hongxiang Zhao,Pengyu Sun,Yu Huang,Yang Yang +10 more
TL;DR: The fabrication of phase-pure formamidinium-lead tri-iodide perovskite films with excellent optoelectronic quality and stability is reported with an order of magnitude enhanced photoluminescence lifetime.
Journal ArticleDOI
Perovskite-polymer composite cross-linker approach for highly-stable and efficient perovskite solar cells.
Tae Hee Han,Jin-Wook Lee,Chungseok Choi,Shaun Tan,Changsoo Lee,Yepin Zhao,Zhenghong Dai,Nicholas De Marco,Sung-Joon Lee,Sang-Hoon Bae,Yonghai Yuan,Hyuck Mo Lee,Yu Huang,Yang Yang +13 more
TL;DR: Here Han et al. choose a polymer with proper molecular structure to crosslink the perovskite grains to greatly improve the device stability, and all photovoltaic parameters are significantly enhanced in the solar cells and the devices also show excellent stability.
Journal ArticleDOI
Highly active and stable stepped Cu surface for enhanced electrochemical CO2 reduction to C2H4
Chungseok Choi,Soonho Kwon,Tao Cheng,Tao Cheng,Mingjie Xu,Mingjie Xu,Peter Tieu,Changsoo Lee,Changsoo Lee,Jin Cai,Hyuck Mo Lee,Xiaoqing Pan,Xiangfeng Duan,William A. Goddard,Yu Huang +14 more
TL;DR: In this article, the authors report that copper nanowires with rich surface steps exhibit a remarkably high Faradaic efficiency for C2H4 that can be maintained for over 200 hours.
Journal ArticleDOI
Bimolecular Additives Improve Wide-Band-Gap Perovskites for Efficient Tandem Solar Cells with CIGS
Dong Hoe Kim,Dong Hoe Kim,Christopher P. Muzzillo,Jinhui Tong,Axel F. Palmstrom,Bryon W. Larson,Chungseok Choi,Steven P. Harvey,Stephen Glynn,James B. Whitaker,Fei Zhang,Zhen Li,Haipeng Lu,Maikel F.A.M. van Hest,Joseph J. Berry,Lorelle M. Mansfield,Yu Huang,Yanfa Yan,Kai Zhu +18 more
TL;DR: In this paper, a 1.68-eV (FA0.65MA0.20Cs0.15)Pb(I0.8Br0.2)3 wide-band-gap perovskite solar cell with an efficiency of ∼20% enabled by using PEAI and Pb(SCN)2 complementary additive additive in the precursor.
Journal ArticleDOI
A Highly Active Star Decahedron Cu Nanocatalyst for Hydrocarbon Production at Low Overpotentials.
Chungseok Choi,Tao Cheng,Michelle M. Flores Espinosa,Huilong Fei,Xiangfeng Duan,William A. Goddard,Yu Huang +6 more
TL;DR: It is demonstrated that the surface stacking faults and twin defects increase CO binding energy, leading to the enhanced CO2 RR performance on SD-Cu NPs, demonstrating a faradaic efficiency higher than commercial Cu NPs.