Photocatalytic Deposition of Nanostructured CsPbBr₃ Perovskite Quantum Dot Films on Mesoporous TiO₂ and Their Enhanced Visible-Light Photodegradation Properties.

ABSTRACT: Herein, we report the in situ photocatalytic deposition of cesium lead bromide (CsPbBr₃) perovskite quantum dots on mesoporous TiO₂-coated fluorine-doped tin oxide (FTO/TiO₂) electrodes. The mesoporous TiO₂ layer is used as a photocatalyst to promote the following: (1) the Pb deposition from a Pb²⁺ aqueous solution and (2) the in situ Pb conversion into CsPbBr₃ perovskite in the presence of a CsBr methanolic solution without any organic capping agent. Both steps are carried out under ultraviolet light irradiation under ambient conditions without any post-treatment. The obtained FTO/TiO₂/CsPbBr₃ film was characterized by UV-vis diffuse reflectance spectroscopy, X-ray diffraction, photoluminescence spectr

SUBMITTER: Gonzalez-Moya JR 

PROVIDER: S-EPMC9352250 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature