Solid-state synthesis of ligand-assisted lead halide nanoclusters†

Abstract

A solid-state synthesis of blue-emitting lead halide nanoclusters has been demonstrated for the first time. The solid-state grinding synthesis provides a facile method to produce highly confined lead bromide clusters under ambient conditions. Both CH₃NH₃PbBr₃ perovskite magic-sized clusters and lead halide molecular clusters have been produced, as confirmed by comparison to those synthesized using a ligand-assisted reprecipitation method in terms of electronic absorption, photoluminescence, and solid state characterization.