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Xiaodong Li, Wenxiao Zhang, Xuemin Guo, Chunyan Lu, Jiyao Wei, Junfeng Fang
A stable perovskite heterojunction was constructed for inverted solar cells through surface sulfidation of lead (Pb)-rich perovskite films. The formed lead-sulfur (Pb-S) bonds upshifted the Fermi level at the perovskite interface and induced an extra back-surface field for electron extraction. The resulting inverted devices exhibited a power conversion efficiency (PCE) >24% with a high open-circuit voltage of 1.19 volts, corresponding to a low voltage loss of 0.36 volts. The strong Pb-S bonds could stabilize perovskite heterojunctions and strengthen underlying perovskite structures that have a similar crystal lattice. Devices with surface sulfidation retained more than 90% of the initial PCE after aging at 85°C for 2200 hours or operating at the maximum power point under continuous illumination for 1000 hours at 55° ± 5°C.
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Li, X., Zhang, W., Guo, X., Lu, C., Wei, J., & Fang, J. (2022). Constructing heterojunctions by surface sulfidation for efficient inverted perovskite solar cells. Science, 375(6579), 434–437. https://doi.org/10.1126/science.abl5676
Li, Xiaodong, et al. "Constructing heterojunctions by surface sulfidation for efficient inverted perovskite solar cells." Science, vol. 375, no. 6579, 2022, pp. 434–437, https://doi.org/10.1126/science.abl5676.
Li, Xiaodong, Wenxiao Zhang, Xuemin Guo, Chunyan Lu, Jiyao Wei, and Junfeng Fang. "Constructing heterojunctions by surface sulfidation for efficient inverted perovskite solar cells." Science 375, no. 6579 (2022): 434–437. https://doi.org/10.1126/science.abl5676.
Li X., Zhang W., Guo X. [и др.] Constructing heterojunctions by surface sulfidation for efficient inverted perovskite solar cells // Science. — 2022. — Vol. 375, № 6579. — P. 434–437. — URL: https://doi.org/10.1126/science.abl5676
@article{li2022constructing,
title = {{Constructing heterojunctions by surface sulfidation for efficient inverted perovskite solar cells}},
author = {Xiaodong Li and Wenxiao Zhang and Xuemin Guo and Chunyan Lu and Jiyao Wei and Junfeng Fang},
journal = {Science},
year = {2022},
volume = {375},
number = {6579},
pages = {434--437},
doi = {10.1126/science.abl5676},
url = {https://doi.org/10.1126/science.abl5676}
}TY - JOUR AU - Li, Xiaodong AU - Zhang, Wenxiao AU - Guo, Xuemin AU - Lu, Chunyan AU - Wei, Jiyao AU - Fang, Junfeng TI - Constructing heterojunctions by surface sulfidation for efficient inverted perovskite solar cells JO - Science VL - 375 IS - 6579 SP - 434 EP - 437 PY - 2022 DA - 2022/01/27 DO - 10.1126/science.abl5676 UR - https://doi.org/10.1126/science.abl5676 ER -
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