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4 results on '"Li, Chongwen"'

1. Publisher Correction: Regulating surface potential maximizes voltage in all-perovskite tandems

Author

Chen, Hao, primary, Maxwell, Aidan, additional, Li, Chongwen, additional, Teale, Sam, additional, Chen, Bin, additional, Zhu, Tong, additional, Ugur, Esma, additional, Harrison, George, additional, Grater, Luke, additional, Wang, Junke, additional, Wang, Zaiwei, additional, Zeng, Lewei, additional, Park, So Min, additional, Chen, Lei, additional, Serles, Peter, additional, Awni, Rasha Abbas, additional, Subedi, Biwas, additional, Zheng, Xiaopeng, additional, Xiao, Chuanxiao, additional, Podraza, Nikolas J., additional, Filleter, Tobin, additional, Liu, Cheng, additional, Yang, Yi, additional, Luther, Joseph M., additional, De Wolf, Stefaan, additional, Kanatzidis, Mercouri G., additional, Yan, Yanfa, additional, and Sargent, Edward H., additional

Published
2023
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2. Suppressed phase segregation for triple-junction perovskite solar cells

Author

Wang, Zaiwei, primary, Zeng, Lewei, additional, Zhu, Tong, additional, Chen, Hao, additional, Chen, Bin, additional, Kubicki, Dominik J., additional, Balvanz, Adam, additional, Li, Chongwen, additional, Maxwell, Aidan, additional, Ugur, Esma, additional, dos Reis, Roberto, additional, Cheng, Matthew, additional, Yang, Guang, additional, Subedi, Biwas, additional, Luo, Deying, additional, Hu, Juntao, additional, Wang, Junke, additional, Teale, Sam, additional, Mahesh, Suhas, additional, Wang, Sasa, additional, Hu, Shuangyan, additional, Jung, Eui Dae, additional, Wei, Mingyang, additional, Park, So Min, additional, Grater, Luke, additional, Aydin, Erkan, additional, Song, Zhaoning, additional, Podraza, Nikolas J., additional, Lu, Zheng-Hong, additional, Huang, Jinsong, additional, Dravid, Vinayak P., additional, De Wolf, Stefaan, additional, Yan, Yanfa, additional, Grätzel, Michael, additional, Kanatzidis, Merx G., additional, and Sargent, Edward H., additional

Published
2023
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3. Regulating surface potential maximizes voltage in all-perovskite tandems

Author

Chen, Hao, primary, Maxwell, Aidan, additional, Li, Chongwen, additional, Teale, Sam, additional, Chen, Bin, additional, Zhu, Tong, additional, Ugur, Esma, additional, Harrison, George, additional, Grater, Luke, additional, Wang, Junke, additional, Wang, Zaiwei, additional, Zeng, Lewei, additional, Park, So Min, additional, Chen, Lei, additional, Serles, Peter, additional, Awni, Rasha Abbas, additional, Subedi, Biwas, additional, Zheng, Xiaopeng, additional, Xiao, Chuanxiao, additional, Podraza, Nikolas J., additional, Filleter, Tobin, additional, Liu, Cheng, additional, Yang, Yi, additional, Luther, Joseph M., additional, De Wolf, Stefaan, additional, Kanatzidis, Mercouri G., additional, Yan, Yanfa, additional, and Sargent, Edward H., additional

Published
2022
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4. Regulating surface potential maximizes voltage in all-perovskite tandems.

Author

Chen, Hao, Maxwell, Aidan, Li, Chongwen, Teale, Sam, Chen, Bin, Zhu, Tong, Ugur, Esma, Harrison, George, Grater, Luke, Wang, Junke, Wang, Zaiwei, Zeng, Lewei, Park, So Min, Chen, Lei, Serles, Peter, Awni, Rasha Abbas, Subedi, Biwas, Zheng, Xiaopeng, Xiao, Chuanxiao, and Podraza, Nikolas J.

Abstract

The open-circuit voltage (VOC) deficit in perovskite solar cells is greater in wide-bandgap (over 1.7 eV) cells than in perovskites of roughly 1.5 eV (refs. 1,2). Quasi-Fermi-level-splitting measurements show VOC-limiting recombination at the electron-transport-layer contact3–5. This, we find, stems from inhomogeneous surface potential and poor perovskite–electron transport layer energetic alignment. Common monoammonium surface treatments fail to address this; as an alternative, we introduce diammonium molecules to modify perovskite surface states and achieve a more uniform spatial distribution of surface potential. Using 1,3-propane diammonium, quasi-Fermi-level splitting increases by 90 meV, enabling 1.79 eV perovskite solar cells with a certified 1.33 V VOC and over 19% power conversion efficiency (PCE). Incorporating this layer into a monolithic all-perovskite tandem, we report a record VOC of 2.19 V (89% of the detailed balance VOC limit) and over 27% PCE (26.3% certified quasi-steady state). These tandems retained more than 86% of their initial PCE after 500 h of operation.Because open-circuit voltage deficit is greater in wide-bandgap perovskite solar cells, the authors introduce diammonium molecules to modify perovskite surface states and achieve a more uniform spatial distribution of surface potential, enabling record voltage all-perovskite tandem solar cells. [ABSTRACT FROM AUTHOR]

Published
2023
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