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Lead‐free mesoscopic Cs 2 SnI 6 perovskite solar cells using different nanostructured ZnO nanorods as electron transport layers
Author(s) -
Qiu Xiaofeng,
Jiang Yanan,
Zhang Hailiang,
Qiu Zhiwen,
Yuan Shuai,
Wang Ping,
Cao Bingqiang
Publication year - 2016
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201600166
Subject(s) - nanorod , materials science , mesoscopic physics , perovskite (structure) , optoelectronics , band gap , nanotechnology , energy conversion efficiency , layer (electronics) , chemical engineering , physics , quantum mechanics , engineering
Lead‐free and more air‐stable perovskite Cs 2 SnI 6 absorber with a direct bandgap of 1.48 eV is synthesized via a modified solution process. Different nanostructured ZnO nanorod arrays as electron transport layers and hole blocking layers are grown by controlling the seed layer and used to fabricate mesoscopic perovskite solar cells with Cs 2 SnI 6 as light absorber layer. The influences of ZnO seed layers and nanorod morphology on the device photovoltaic performance were also investigated. With careful control of ZnO nanorod length and pore size to ensure high loading of the Cs 2 SnI 6 absorber, we achieved power conversion efficiency of near 1%.