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Fabrication of Lead‐Free (CH 3 NH 3 ) 3 Bi 2 I 9 Perovskite Photovoltaics in Ethanol Solvent
Author(s) -
Li Haijin,
Wu Congcong,
Yan Yongke,
Chi Bo,
Pu Jian,
Li Jian,
Priya Shashank
Publication year - 2017
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201701470
Subject(s) - perovskite (structure) , bismuth , materials science , photovoltaics , fabrication , solvent , chemical engineering , microstructure , inorganic chemistry , open circuit voltage , nanotechnology , chemistry , photovoltaic system , organic chemistry , voltage , metallurgy , medicine , ecology , alternative medicine , physics , pathology , quantum mechanics , engineering , biology
The toxicity of lead present in organohalide perovskites and the hazardous solvent systems used for their synthesis hinder the deployment of perovskite solar cells (PSCs). Herein, an environmentally friendly route toward bismuth‐based, lead‐free (CH 3 NH 3 ) 3 Bi 2 I 9 perovskites that utilize ethanol as the solvent is described. Using this method, dense and homogeneous microstructures were obtained, compared to the porous, rough microstructures obtained using dimethylformamide. Photovoltaic performances were enhanced, with an open‐circuit voltage of 0.84 V measured.