Y
Yao-Tsung Hsieh
Researcher at University of California, Los Angeles
Publications - 24
Citations - 3147
Yao-Tsung Hsieh is an academic researcher from University of California, Los Angeles. The author has contributed to research in topics: Perovskite (structure) & Photovoltaic system. The author has an hindex of 18, co-authored 24 publications receiving 2427 citations. Previous affiliations of Yao-Tsung Hsieh include National Cheng Kung University & Academia Sinica.
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Journal ArticleDOI
Single Crystal Formamidinium Lead Iodide (FAPbI3): Insight into the Structural, Optical, and Electrical Properties.
Qifeng Han,Sang-Hoon Bae,Pengyu Sun,Yao-Tsung Hsieh,Yang Michael Yang,You Seung Rim,Hongxiang Zhao,Qi Chen,Wangzhou Shi,Gang Li,Yang Yang +10 more
TL;DR: The phase transition of FAPbI3 between the α-phase and δ-phase is studied and photodetectors based on single-crystal FAP bI3 are demonstrated.
Journal ArticleDOI
Multifunctional Fullerene Derivative for Interface Engineering in Perovskite Solar Cells
Yolanda L. Li,Yingsheng Zhao,Qi Chen,Yang Michael Yang,Yi Liu,Ziruo Hong,Zonghao Liu,Yao-Tsung Hsieh,Lei Meng,Yang Yang +9 more
TL;DR: Electrical properties of this modified interfacial layer strongly suggests that PCBB-2CN-2C8 passivates the TiO2 surface and thus reduces charge recombination loss caused by the deep trap states ofTiO2.
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A Bifunctional Lewis Base Additive for Microscopic Homogeneity in Perovskite Solar Cells
Jin-Wook Lee,Sang-Hoon Bae,Yao-Tsung Hsieh,Nicholas De Marco,Mingkui Wang,Pengyu Sun,Yang Yang +6 more
TL;DR: In this article, a bifunctional non-volatile Lewis base additive urea was used to reduce the microscopic inhomogeneity of perovskite solar cells, which resulted in a significant enhancement of the photoluminescence lifetime from 200.5 to 752.4 ns.
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High-performance perovskite/Cu(In,Ga)Se2 monolithic tandem solar cells
Qifeng Han,Yao-Tsung Hsieh,Lei Meng,Jyh-Lih Wu,Pengyu Sun,En-Ping Yao,Sheng-Yung Chang,Sang-Hoon Bae,Takuya Kato,Veronica Bermudez,Yang Yang +10 more
TL;DR: Control of the roughness of the CIGS surface and the use of a heavily doped organic hole transport layer were crucial to achieve a 22.4% power conversion efficiency in a two-terminal tandem cell with hybrid perovskite/CIGS combination.
Journal ArticleDOI
Tailoring the Interfacial Chemical Interaction for High-Efficiency Perovskite Solar Cells.
Lijian Zuo,Qi Chen,Nicholas De Marco,Yao-Tsung Hsieh,Huajun Chen,Pengyu Sun,Sheng-Yung Chang,Hongxiang Zhao,Shiqi Dong,Yang Yang +9 more
TL;DR: It is demonstrated that interfacial chemical interactions are a critical factor in determining the optoelectronic properties of perovskite solar cells, and proper interfacial interactions can significantly reduce trap state density and facilitate the interfacial charge transfer.