A pressure-assisted annealing method for high quality CsPbBr₃ film deposited by sequential thermal evaporation.

ABSTRACT: All-inorganic CsPbBr₃ perovskite solar cells have triggered incredible interest owing to their superior stability, especially under high temperature conditions. Different from the organic-inorganic hybrid perovskites, inorganic CsPbBr₃ perovskite always need a high annealing temperature for the formation of a cubic phase. Generally, the higher temperature (over 300 °C) and longer annealing time will promote the growth of CsPbBr₃, resulting in larger grain sizes and lower trap density in the crystals. However, CsPbBr₃ perovskite can also be damaged by excessive annealing temperature (∼350 °C) and time, since PbBr₂ only has a melting temperature close to 357 °C. To address this issue, herein, we developed a novel pressure-assisted anneal

SUBMITTER: Hua J 

PROVIDER: S-EPMC9050036 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature