In:
Angewandte Chemie, Wiley, Vol. 133, No. 30 ( 2021-07-19), p. 16466-16472
Abstract:
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.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v133.30
DOI:
10.1002/ange.202104958
Language:
English
Publisher:
Wiley
Publication Date:
2021
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