Effect of doping on the phase stability and photophysical properties of CsPbI₂Br perovskite thin films.

ABSTRACT: In this study, we demonstrate that the crystallization process of CsPbI₂Br films can be modulated when small amounts of additives are added to the precursor solution, leading to the formation of the bright brownish α-phase perovskite films with high orientation along the [100] crystallographic direction. Doped CsPbI₂Br films exhibit improved crystallinity, with high coverage, large grain size and pinhole-free surface morphology, suitable for making high performance optoelectronic devices. We also explored the role of Cl in the photophysical properties of CsPbI₂Br perovskite films using the temperature dependent photoluminescence technique. We found that the Cl ions enhance the photoluminescence emission by reducing the density of trap states, and also decre

SUBMITTER: Atourki L 

PROVIDER: S-EPMC8693609 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature