Ultrastable Gd^(3+)doped CsPbCl_(1.5)Br_(1.5) nanocrystals blue glass for regulated and low thresholds amplified spontaneous emission

Here,Gd-doped CsPbCl_(1.5)Br_(1.5) nanocrystals(NCs)in borosilicate glass matrix(B_(2)O_(3)−SiO_(2)−ZnO)were prepared by melting quenching and in-situ crystallization.The optical performance of CsPbCl_(1.5)Br_(1.5) NCs glasses under different heat-treatment temperatures and the content of Gd^(3+) were analyzed in detail.After CsPbCl_(1.5)Br_(1.5) NCs glass is doped with Gd^(3+)ions,the photoluminescence intensity increases and the synthesized Gd-doped CsPbCl_(1.5)Br_(1.5) NCs glasses have excellent water stability and thermal cycling performance.In addition,the influence of Gd-doped concentrations and heat-treatment temperatures on the amplified spontaneous emission(ASE)thresholds of CsPbCl_(1.5)Br_(1.5) NCs glasses was studied,and the Gd-doped CsPbCl_(1.5)Br_(1.5) NCs glasses achieve controllable ASE thresholds at room temperature.The ASE threshold can be as low as 0.39 mJ∕cm^(2).This work offers a neoteric reference for the research in the application of metal ion-doped perovskite NCs and a new idea for the realization of controllable and low ASE thresholds on perovskite NCs.