Luminescent properties of glasses activated by CsPbBr3 perovskite nanocrystals and europium ions

A series of borogermanate glasses with CsPbBr₃ perovskite nanocrystals and Eu³⁺ ions is synthesized. At low concentrations of Eu₂O₃ in glass, Eu³⁺ ions play the role of crystallization centers for the nucleation of perovskite nanocrystals. At high concentrations of Eu₂O₃ in glass, CsPbBr3 nanocrystals nucleate only during additional heat treatment. The lifetime of Eu³⁺ luminescence increases from 1.58 to 1.69 msec along with an increase in the Eu₂O₃  concentration. Along this, a slight distortion of the Eu³⁺ environment occurs in the glass matrix, resulting in a slight redistribution of the characteristic luminescence bands.