Ultrahigh photo-stable all-inorganic perovskite nanocrystals and their robust random lasing.

ABSTRACT: Photo-instability has prevented further commercialization of all-inorganic perovskite nanocrystals (NCs) in the field of high-power optoelectronics. Here, an accelerated transformation process from non-luminescent Cs₄PbBr₆ to CsPbBr₃ NCs with bright green emission is explored with irradiation at 365 nm during water-triggered structural transformation. The photoelectric field provided by the photon energy of 365 nm promotes the rapid stripping of CsBr and atomic reconstruction, contributing to the production of ultrahigh photo-stable defect-free CsPbBr₃ NCs. The robust emission output of the as-obtained CsPbBr₃ NCs is well preserved even when recorded after 160 min. Moreover, a long-term stable random lasing could be achieved when excit

SUBMITTER: Yang L 

PROVIDER: S-EPMC9418371 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature