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Low‐Dimensional Inorganic Tin Perovskite Solar Cells Prepared by Templated Growth
Author(s) -
Li Hansheng,
Jiang Xianyuan,
Wei Qi,
Zang Zihao,
Ma Mingyu,
Wang Fei,
Zhou Wenjia,
Ning Zhijun
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202104958
Subject(s) - perovskite (structure) , materials science , energy conversion efficiency , halide , chemical engineering , tin , solar cell , crystal growth , grain size , thermostability , perovskite solar cell , nucleation , nanotechnology , crystallography , chemistry , optoelectronics , inorganic chemistry , metallurgy , organic chemistry , engineering , enzyme
The manipulation of the dimensionality and nanostructures based on the precise control of the crystal growth kinetics boosts the flourishing development of perovskite optoelectronic materials and devices. Herein, a low‐dimensional inorganic tin halide perovskite, CsSnBrI 2− x (SCN) x , with a mixed 2D and 3D structure is fabricated. A kinetic study indicates that Sn(SCN) 2 and phenylethylamine hydroiodate can form a 2D perovskite structure that acts as a template for the growth of the 3D perovskite CsSnBrI 2− x (SCN) x . The film shows an out‐of‐plane orientation and a large grain size, giving rise to reduced defect density, superior thermostability, and oxidation resistance. A solar cell based on this low‐dimensional film reaches a power conversion efficiency of 5.01 %, which is the highest value for CsSnBr x I 3− x perovskite solar cells. Furthermore, the device shows enhanced stability in ambient air.