N
Namyoung Ahn
Researcher at Seoul National University
Publications - 43
Citations - 5288
Namyoung Ahn is an academic researcher from Seoul National University. The author has contributed to research in topics: Perovskite (structure) & Perovskite solar cell. The author has an hindex of 17, co-authored 37 publications receiving 4277 citations. Previous affiliations of Namyoung Ahn include Los Alamos National Laboratory.
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Highly Reproducible Perovskite Solar Cells with Average Efficiency of 18.3% and Best Efficiency of 19.7% Fabricated via Lewis Base Adduct of Lead(II) Iodide
TL;DR: High efficiency perovskite solar cells were fabricated reproducibly via Lewis base adduct of lead(II) iodide through interaction between Lewis base DMSO and/or iodide and Lewis acid PbI2 through spin-coating of a DMF solution.
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Self-formed grain boundary healing layer for highly efficient CH 3 NH 3 PbI 3 perovskite solar cells
Dae-Yong Son,Jin-Wook Lee,Y. Choi,In Hyuk Jang,Seonhee Lee,Pil J. Yoo,Hyunjung Shin,Namyoung Ahn,Mansoo Choi,Dongho Kim,Nam-Gyu Park +10 more
TL;DR: In this article, the grain boundaries in thin-film perovskite solar cells are passedivated by using excess CH3NH3I in the precursor solution, achieving an average power conversion efficiency of 20.1% over 50 cells (best cell at 20.4%).
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Trapped charge-driven degradation of perovskite solar cells
Namyoung Ahn,Kwisung Kwak,Min Seok Jang,Heetae Yoon,Byung Yang Lee,Jong Kwon Lee,Peter V. Pikhitsa,Junseop Byun,Mansoo Choi +8 more
TL;DR: A mechanism for irreversible degradation of perovskite materials in which trapped charges, regardless of the polarity, play a decisive role is uncovered.
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Control of I–V Hysteresis in CH3NH3PbI3 Perovskite Solar Cell
Hui-Seon Kim,In-Hyuk Jang,Namyoung Ahn,Mansoo Choi,Antonio Guerrero,Juan Bisquert,Juan Bisquert,Nam-Gyu Park +7 more
TL;DR: Frequency (f)-dependent capacitance revealed that the normal planar structure with the TiO2/MAPbI3/spiro-MeOTAD configuration showed most significant I-V hysteresis along with highest capacitance (10(-2) F/cm(2)) among the studied cell configurations.
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Superflexible, high-efficiency perovskite solar cells utilizing graphene electrodes: towards future foldable power sources
TL;DR: In this paper, a super flexible perovskite solar cells using graphene as a transparent electrode is presented, achieving a performance of 16.8% with no hysteresis comparable to that of the counterpart fabricated on a flexible indium-tin-oxide electrode showing a maximum efficiency of 17.3%.