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Phenylalkylamine Passivation of Organolead Halide Perovskites Enabling High‐Efficiency and Air‐Stable Photovoltaic Cells
Author(s) -
Wang Feng,
Geng Wei,
Zhou Yang,
Fang HongHua,
Tong ChuanJia,
Loi Maria Antonietta,
Liu LiMin,
Zhao Ni
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.201603062
Subject(s) - passivation , perovskite (structure) , halide , materials science , photovoltaic system , iodide , benzylamine , nanotechnology , chemical engineering , inorganic chemistry , chemistry , electrical engineering , organic chemistry , engineering , layer (electronics)
Benzylamine is introduced as a surface passivation molecule that improves the moisture‐resistance of the perovskites while simultaneously enhancing their electronic properties. Solar cells based on benzylamine‐modified formamidinium lead iodide perovskite films exhibit a champion efficiency of 19.2% and an open‐circuit voltage of 1.12 V. The modified FAPbI 3 films exhibit no degradation after >2800 h air exposure.