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Lead‐Free Inverted Planar Formamidinium Tin Triiodide Perovskite Solar Cells Achieving Power Conversion Efficiencies up to 6.22%
Author(s) -
Liao Weiqiang,
Zhao Dewei,
Yu Yue,
Grice Corey R.,
Wang Changlei,
Cimaroli Alexander J.,
Schulz Philip,
Meng Weiwei,
Zhu Kai,
Xiong RenGen,
Yan Yanfa
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201602992
Subject(s) - formamidinium , triiodide , materials science , energy conversion efficiency , perovskite (structure) , tin , photocurrent , optoelectronics , planar , hysteresis , dye sensitized solar cell , electrode , chemical engineering , electrolyte , chemistry , computer graphics (images) , physics , quantum mechanics , computer science , engineering , metallurgy
Efficient lead (Pb)‐free inverted planar formamidinium tin triiodide (FASnI 3 ) perovskite solar cells (PVSCs) are demonstrated. Our FASnI 3 PVSCs achieved average power conversion efficiencies (PCEs) of 5.41% ± 0.46% and a maximum PCE of 6.22% under forward voltage scan. The PVSCs exhibit small photocurrent–voltage hysteresis and high reproducibility. The champion cell shows a steady‐state efficiency of ≈6.00% for over 100 s.