A simple multiple centrifugation method for large-area homogeneous perovskite CsPbBr₃ films with optical lasing.

ABSTRACT: Large scale cesium lead-halide (CsPbX₃, X = Cl, Br, and I) perovskite films have become the basis of laser applications. Common fabrication methods such as spin-coating and thermal evaporation have a trade-off between high quality and low cost. Herein, we reported a facile method for preparing a large area homogeneous perovskite CsPbBr₃ film via a multiple centrifugal deposition and solvent annealing (MCDSA) method. This method is superior because it can control the thickness (180 nm to 880 nm) of the film, ensure the film is crack and pinhole free, has a large area (2.5 cm × 2.5 cm), and has a low surface roughness (a root mean square of 32 nm). Multiple times of centrifugation and solvent annealing in the MCDSA method are key to improving the quality of the f

SUBMITTER: Lu CG 

PROVIDER: S-EPMC9055284 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature