期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 30, 页码 16330-16336出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202104958
关键词
crystal growth; inorganic structures; templated growth; perovskites; solar cells
资金
- National Key Research and Development Program of China [2016YFA0204000]
- ShanghaiTech start-up funding
- National Natural Science Foundation of China [61935016, 92056119]
- Shanghai Key Research Program [16JC1402100]
- Analytical Instrumentation Center, SPST, ShanghaiTech University [SPST-AIC10112914]
- Centre for High-Resolution Electron Microscopy (CEM), SPST, ShanghaiTech University [EM02161943]
- 1000 Young Talent Program
- High-Performance Computing (HPC) Platform of ShanghaiTech University
Manipulating dimensionality and nanostructures based on precise control of crystal growth kinetics boosts the development of perovskite optoelectronic materials and devices. Here, a low-dimensional inorganic tin halide perovskite, CsSnBrI2-x(SCN)(x), with a mixed 2D and 3D structure is fabricated, showing superior performance and high power conversion efficiency.
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, CsSnBrI2-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 CsSnBrI2-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 CsSnBrxI3-x perovskite solar cells. Furthermore, the device shows enhanced stability in ambient air.
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