Fully Inorganic Ruddlesden-Popper Double Cl-I and Triple Cl-Br-I Lead Halide Perovskite Nanocrystals.

ABSTRACT: The vast majority of lead halide perovskite (LHP) nanocrystals (NCs) are currently based on either a single halide composition (CsPbCl₃, CsPbBr₃, and CsPbI₃) or an alloyed mixture of bromide with either Cl^- or I^- [i.e., CsPb(Br:Cl)₃ or CsPb(Br:I)₃]. In this work, we present the synthesis as well as a detailed optical and structural study of two halide alloying cases that have not previously been reported for LHP NCs: Cs₂PbI₂Cl₂ NCs and triple halide CsPb(Cl:Br:I)₃ NCs. In the case of Cs₂PbI₂Cl₂, we observe for the first time NCs with a fully inorganic Ruddlesden-Popper phase (RPP) crystal structure. Unlike the well-explored organic-inorga

SUBMITTER: Akkerman QA 

PROVIDER: S-EPMC7497717 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature