How Does Local Strain Affect Stokes Shifts in Halide Double Perovskite Nanocrystals?

ABSTRACT: Lead-free perovskite nanocrystals are of interest due to their nontoxicity and potential application in the display industry. However, engineering their optical properties is nontrivial and demands an understanding of emission from both self-trapped and free excitons. Here, we focus on tuning silver-based double perovskite nanocrystals' optical properties via two iso-valent dopants, Bi and Sb. The photoluminescence quantum yield of the intrinsic Cs₂Ag_1-yNa_yInCl₆ perovskite increased dramatically upon doping. However, the two dopants affect the optical properties very differently. We hypothesize that the differences arise from their differences in electronic level contributions and ionic sizes. This hypothesis is validated through ab

SUBMITTER: Shaek S 

PROVIDER: S-EPMC10653075 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature