Large and Ultrastable All-Inorganic CsPbBr3 Monocrystalline Films: Low-Temperature Growth and Application for High-Performance Photodetectors

作者:Yang, Zheng; Xu, Qian; Wang, Xiandi; Lu, Junfeng; Wang, Hui; Li, Fangtao; Zhang, Li; Hu, Guofeng; Pan, Caofeng*
来源:Advanced Materials, 2018, 30(44): 1802110.
DOI:10.1002/adma.201802110

摘要

Stability is a key problem that hinders the practical application of lead halide perovskite. Therefore, all-inorganic perovskite CsPbX3 monocrystalline films are urgently needed to fabricate photoelectric devices. Herein, a low-temperature and substrate-independent growth method is demonstrated to grow millimeter-level inorganic perovskite monocrystalline thin films. These films present good optical and electrical properties comparable to bulk ones. What is more, they exhibit excellent long-term stability toward humidity and thermal treatment. The as-grown CsPbBr3 monocrystalline films are then fabricated into photodetectors with high photodetection performance. These results demonstrate that the CsPbBr3 monocrystalline films have potential in fabricating high-performance optoelectronic devices.