50% Sn‐Based Planar Perovskite Solar Cell with Power Conversion Efficiency up to 13.6% |
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| Authors: | Yunlong Li Weihai Sun Weibo Yan Senyun Ye Haixia Rao Haitao Peng Ziran Zhao Zuqiang Bian Zhiwei Liu Huanping Zhou Chunhui Huang |
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| Institution: | 1. State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing, P. R. China;2. Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, P. R. China |
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| Abstract: | In the present work, a Pb‐assisted two step method is successfully proposed to fabricate high‐quality CH3NH3Sn0.5Pb0.5I3 (MASn0.5Pb0.5I3) perovskite film on the indium tin oxide (ITO) glass/poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) substrate. The film shows regular crystalline grains with a flat and compact morphology as well as full coverage on the planar PEDOT:PSS substrate. Remarkably, corresponding devices ITO/PEDOT:PSS/MASn0.5Pb0.5I3/C60/2,9‐dimethyl‐4,7‐diphenyl‐1,10‐phenanthroline/Ag are fabricated with high reproducibility, achieving a high power conversion efficiency of 13.6%, which is, to the best of knowledge, the most efficient solar cell based on Sn‐based perovskite. |
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| Keywords: | Pb‐assisted two step method planar heterojunction Sn‐based perovskite solution process |
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