Hybridization of Single Nanocrystals of Cs₄PbBr₆ and CsPbBr₃.

ABSTRACT: Nanocrystals of all-inorganic cesium lead halide perovskites (CsPbX₃, X = Cl, Br, I) feature high absorption and efficient narrow-band emission which renders them promising for future generation of photovoltaic and optoelectronic devices. Colloidal ensembles of these nanocrystals can be conveniently prepared by chemical synthesis. However, in the case of CsPbBr₃, its synthesis can also yield nanocrystals of Cs₄PbBr₆ and the properties of the two are easily confused. Here, we investigate in detail the optical characteristics of simultaneously synthesized green-emitting CsPbBr₃ and insulating Cs₄PbBr₆ nanocrystals. We demonstrate that, in this case, the two materials inevitably hybridize, forming nanoparticles with

SUBMITTER: Weerd C 

PROVIDER: S-EPMC5592650 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature