Ultrastable Gd3+ doped CsPbCl1.5Br1.5 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.