Synthesis of Highly-Oriented Black CsPbI3 Microstructures for High-Performance Solar Cells
Synthesis of Highly-Oriented Black CsPbI3 Microstructures for High-Performance Solar Cells
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用于高性能太阳能电池的高取向黑色 CsPbI3 微结构的合成
DOI:
10.1021/acs.chemmater.0c00427
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发表时间:
2020-03
影响因子:
8.6
通讯作者:
Wang Xi
中科院分区:
文献类型:
--
作者:
Ye Tao;Pan Lu;Yang Yijun;Liang Qifeng;Lu Yue;Sui Manling;Golberg Dmitri;Wang Xi
Synthesis of a thin layer of perovskite with less pinholes and defects is vital for the construction of a high-performance perovskite solar cell (PSC). We report on an oriented attachment strategy to fabricate a black phase CsPbI3 highly-oriented quasi-single-crystalline microstructures film for constructing a mesoporous PSC device with enhanced power conversion efficiency, from 13.4% to 16.0%. The theoretical calculations and detailed in/ex situ characterizations demonstrate that the oriented attachment is driven by the predominant adsorption of dimethyl sulfoxide (DMSO) on the {212} facets of the yellow phase δ-CsPbI3 crystals which initially form a relatively oriented structure followed by phase transition to α-CsPbI3 crystals and merging into large highly-oriented quasi-single-crystalline microstructures film with {200} planes exposed under annealing. Our work demonstrates that the oriented attachment strategy enables the formation of highly-oriented quasi-single-crystalline microstructures films which are essential for realizing high-efficiency and stable thin film PSCs.
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