The optoelectronic properties improvement of double perovskites Cs₂SnI₆ by anionic doping (F^-).

ABSTRACT: Tin-based perovskite material is the best choice to replace heavy metal element lead during the last several years. Cs₂SnI₆ with Sn⁴⁺ is a fascinating optoelectronic material, which is a more air-stable composite cesium tin halide peroxide variant from CsSnI₃. However, the optoelectronic performance between N and P type of Cs₂SnI₆ varies considerably. Herein, we synthesized uniform Cs₂SnI₆ by modified two-step method, which thermal evaporated CsI firstly, and followed annealing in the SnI₄ and I₂ vapor at 150 °C resulted in uniform Cs₂SnI₆ films. SnF₄ is used as a dopant source to improve the optoelectronic properties of Cs₂SnI₆

SUBMITTER: Wu J 

PROVIDER: S-EPMC8766447 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature