Abstract

Traditional filters are faced with the problems of high price and complex preparation process. It is necessary to find a new method or material to make up for these shortcomings. In this Letter, ${{\rm CsPbBr}_3}$ nanocrystals with controllable size were prepared in a tellurite glass matrix by a simple and effective heat treatment process. The absorption wavelength of ${{\rm CsPbBr}_3}$ quantum dots gradually shifted to red due to the quantum confinement effect. In addition, the intrinsic photoluminescence intensity of ${{\rm CsPbBr}_3}$ quantum dots was reduced by ${{\rm Ce}^{4 +}}$-doped quantum dot ${{\rm CsPbBr}_3}$ glass, which could shield a short wavelength of 200–530 nm. The uniformly distributed quantum dots ensure high transmittance (${\gt} 80\%$) of a long wavelength (560–800 nm), demonstrating that the quantum dot glass material has a broad application prospect as a shortwave shielding material.

© 2021 Optical Society of America