Abstract
Recently, cesium lead bromide perovskite glass has been recognized as a potential material to fabricate green light emission devices because of their high stability and excellent optical performance. However, the low photoluminescence efficiency and poor color purity ($\lt\! 525\,\,{\rm nm}$) of ${{\rm CsPbBr}_3}$ quantum dot (QD) glass restricts its practical application. In this work, self-crystallization ${{\rm CsPbBr}_3}$ QD glasses are successfully prepared via the melt quenching method, and the photoluminescence efficiency increases 10-fold compared with regular thermal treatment ${{\rm CsPbBr}_3}$ QD glass without ${\rm Ag}^+$ doping. The green light-emitting devices based on bulk self-crystallization ${{\rm CsPbBr}_3}$ QD glass with 0.4 mol.% ${\rm Ag}^+$ doping achieves a luminescence efficiency of 20.85 lm/W with a CIE (0.2084, 0.6026) under a 20 mA driving current. The present results provide new, to the best of our knowledge, insight into the application of ${{\rm CsPbBr}_3}$ QD glass in the optoelectronic field.
© 2021 Optical Society of America
Full Article | PDF ArticleMore Like This
Zhousu Xu, Xiaofeng Liu, Jianrong Qiu, and Cheng Cheng
Opt. Lett. 44(22) 5626-5629 (2019)
Luyue Niu, Sikai Wang, Zexuan Sui, Yushou Song, Lei Zhao, Lu Liu, Jing Ren, and Jianzhong Zhang
Opt. Lett. 46(14) 3448-3451 (2021)
Yongmin Duan, Panpan Li, Yang Lu, Xunsi Wang, Shiqing Xu, and Junjie Zhang
Opt. Lett. 46(15) 3580-3583 (2021)