Organic Matrix Assisted Low-temperature Crystallization of Black Phase Inorganic Perovskites

被引:40
作者
Chen, Yuetian [1 ]
Liu, Xiaomin [1 ]
Zhao, Yixin [1 ,2 ]
机构
[1] Shanghai Jiao Tong Univ, Frontiers Sci Ctr Transformat Mol, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China
[2] Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200240, Peoples R China
关键词
black phase; crystallization mechanism; low temperature; organic matrix; perovskites; LEAD HALIDE PEROVSKITES; SOLAR-CELLS; ROOM-TEMPERATURE; IODIDE PEROVSKITE; EFFICIENT; STABILITY; FILMS; FORMAMIDINIUM; PASSIVATION; PERFORMANCE;
D O I
10.1002/anie.202110603
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
All-inorganic perovskites have attracted increasing attention for applications in perovskite solar cells (PSCs) and optoelectronics, including light-emitting devices (LEDs). Cesium lead halide perovskites with tunable I/Br ratios and a band gap aligning with the sunlight region are promising candidates for PSCs. Although impressive progress has been made to improve device efficiency from the initial 2.9% with low phase stability to over 20% with high stability, there are still questions regarding the perovskite crystal growth mechanism, especially at low temperatures. In this Minireview, we summarize recent developments in using an organic matrix, including the addition and use of organic ions, polymers, and solvent molecules, for the crystallization of black phase inorganic perovskites at temperatures lower than the phase transition point. We also discuss possible mechanisms for this low-temperature crystallization and their effect on the stability of black phase perovskites. We conclude with an outlook and perspective for further fabrication of large-scale inorganic perovskites for optoelectronic applications.
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页数:13
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