Luminescence Enhancement Due to Symmetry Breaking in Doped Halide Perovskite Nanocrystals.

ABSTRACT: Metal-halide perovskite nanocrystals have demonstrated excellent optoelectronic properties for light-emitting applications. Isovalent doping with various metals (M²⁺) can be used to tailor and enhance their light emission. Although crucial to maximize performance, an understanding of the universal working mechanism for such doping is still missing. Here, we directly compare the optical properties of nanocrystals containing the most commonly employed dopants, fabricated under identical synthesis conditions. We show for the first time unambiguously, and supported by first-principles calculations and molecular orbital theory, that element-unspecific symmetry-breaking rather than element-specific electronic effects dominate these properties under device-relevant conditions. The impa

SUBMITTER: Ahmed GH 

PROVIDER: S-EPMC9437917 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature