Precipitation and Optical Properties of CsPbBr 3 Quantum Dots in Phosphate Glasses

CsPbBr 3 quantum dots were precipitated in phosphate glasses through heat treatment. Controlled formation of CsPbBr 3 quantum dots was realized by adjustment of heat‐treatment conditions. Absorption and photoluminescence spectra of CsPbBr 3 quantum dots were tuned from 432 to 521 nm. Upon ultraviolet or blue light excitation, efficient photoluminescence from these CsPbBr 3 quantum dots doped phosphate glasses was observed.