Sb-Doped Metal Halide Nanocrystals: A 0D versus 3D Comparison.

ABSTRACT: We synthesize colloidal nanocrystals (NCs) of Rb₃InCl₆, composed of isolated metal halide octahedra ("0D"), and of Cs₂NaInCl₆ and Cs₂KInCl₆ double perovskites, where all octahedra share corners and are interconnected ("3D"), with the aim to elucidate and compare their optical features once doped with Sb³⁺ ions. Our optical and computational analyses evidence that the photoluminescence quantum yield (PLQY) of all these systems is consistently lower than that of the corresponding bulk materials due to the presence of deep surface traps from under-coordinated halide ions. Also, Sb-doped "0D" Rb₃InCl₆ NCs exhibit a higher PLQY than Sb-doped "3D" Cs₂NaInCl₆ and Cs₂

SUBMITTER: Zhu D 

PROVIDER: S-EPMC8294020 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature