Large and Ultrastable All-Inorganic CsPbBr<sub>3</sub> Monocrystalline Films: Low-Temperature Growth and Application for High-Performance Photodetectors.

Yang, Zheng; Xu, Qian; Wang, Xiandi; Lu, Junfeng; Wang, Hui; Li, Fangtao; Zhang, Li; Hu, Guofeng et al. · Adv Mater · 2018

basic_science · Level V

Where this comes from

Abstract

Stability is a key problem that hinders the practical application of lead halide perovskite. Therefore, all-inorganic perovskite CsPbX<sub>3</sub> 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 CsPbBr<sub>3</sub> monocrystalline films are then fabricated into photodetectors with high photodetection performance. These results demonstrate that the CsPbBr<sub>3</sub> monocrystalline films have potential in fabricating high-performance optoelectronic devices.