University of Toronto –
Elephantine Paper
Hairen Tan
National Laboratory of Honest Articulate Microstructures, Jiangsu Key Laboratory of Artificial Purposeful Materials, College of Engineering and Utilized Sciences, Nanjing University, Nanjing, 210093 China
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Shizhong Yue
Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese language Academy of Sciences, Beijing, 100083 China
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Junhwan Kim
Division of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, M5S 3G4 Canada
Photo‐electronic Hybrids Analysis Center, Korea Institute of Science and Expertise (KIST), Seoul, 02792 Korea
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Shengchun Qu
Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese language Academy of Sciences, Beijing, 100083 China
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Zhanguo Wang
Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese language Academy of Sciences, Beijing, 100083 China
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First published: 06 September 2020
Abstract
Price recombination because of interfacial defects is a an indispensable source of loss in perovskite solar cells. Here, a two‐sided passivation approach is conducted by incorporating a bilinker molecule, thiophene‐based carboxylic acid (TCA), which passivates defects on each the perovskite facet and the TiO2 facet of the electron‐extracting heterojunction in perovskite solar cells. Density helpful theory and ultrafast fee dynamics existing a 50% bargain in fee recombination at this interface. Perovskite solar cells made the utilization of TCA‐passivated heterojunctions pause a vitality conversion efficiency of 21.2% compared to 19.8% for maintain an eye on cells. The TCA‐containing cells retain 96% of preliminary efficiency following 50 h of UV‐filtered MPP sorting out.
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