One-Pot Synthesis of Stable CsPbBr3@CsPb2Br5 Core–Shell Heteronanocrystals with Controlled Permeability to Halide Ions

A simple one-pot synthetic strategy based on the hot injection methodology was adapted to prepare (photo)­stable and green emissive colloidal CsPbBr3@CsPb2Br5 core@shell heteronanocrystals (HNCs). The photoactive core, specifically CsPbBr3 ternary metal halide nanocrystals, was homogeneously covered...

Full description

Saved in:
Bibliographic Details
Published in:Chemistry of materials 2023-09, Vol.35 (17), p.7011-7019
Main Authors: Rosa-Pardo, Ignacio, Ciccone, Alessandro, Arenal, Raúl, Galian, Raquel E., Pérez-Prieto, Julia
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A simple one-pot synthetic strategy based on the hot injection methodology was adapted to prepare (photo)­stable and green emissive colloidal CsPbBr3@CsPb2Br5 core@shell heteronanocrystals (HNCs). The photoactive core, specifically CsPbBr3 ternary metal halide nanocrystals, was homogeneously covered with an ultrathin CsPb2Br5 shell (ca. 2 nm), which confers them with long-term stability and a higher photoluminescence quantum yield. Astonishingly, this heterostructure enabled controlled halide exchange to yield unprecedented CsPbCl3@CsPb2Cl5 and CsPbI3@CsPb2I5 HNCs.
ISSN:0897-4756
1520-5002
DOI:10.1021/acs.chemmater.3c01280