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, CsPbBr3 nanocrystals with controllable size were prepared in a tellurite glass matrix by a simple and effective heat treatment process. The absorption wavelength of CsPbBr3 quantum dots gradually shifted to red due to the quantum confinement effect. In addition, the intrinsic photoluminescence intensity of CsPbBr3 quantum dots was reduced by Ce4+-doped quantum dot CsPbBr3 glass, which could shield a short wavelength of 200-530 nm. The uniformly distributed quantum dots ensure high transmittance (>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.
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