Abstract

Zero-dimensional Cs₄PbBr_6−xI_x perovskite quantum dots (PQDs) glass is successfully prepared via a melt quenching method, which provides infinite possibilities for achieving the whole family of zero-dimensional PQDs glass. The test results demonstrate excellent thermal stability and high photoluminescence quantum yields (PLQYs) of Cs₄PbBr_6−xI_x PQDs glass (up to 50%). Finally, the combination of Cs₄PbBr_6−xI_x PQDs glass with an InGaN blue chip is used to fabricate white light-emitting diodes (WLED), which show good color stability at a large operating current, and the color gamut area reaches 137% of NTSC. The above results indicate that zero-dimensional Cs₄PbBr_6−xI_x PQDs glass materials have a broad application prospect in the display lighting field.

© 2022 Optica Publishing Group

Highly efficient green emission Cs₄PbBr₆ quantum dots with stable water endurance

Mingshuang Guan, Panpan Li, Yixi Wu, Xiaoqing Liu, Shiqing Xu, and Junjie Zhang
Opt. Lett. 47(19) 5020-5023 (2022)

Efficient and tunable emission CsPbCl_xBr_3−x quantum dot glass for overcoming the lack of cyan gap in WLED

Mingshuang Guan, Yixi Wu, Zhaojing Kuang, Shiqing Xu, and Junjie Zhang
Opt. Lett. 48(19) 5173-5176 (2023)

Mechanosynthesis strategy towards a high-efficiency CsPbBr₃/Cs₄PbBr₆ perovskite phosphor

Doudou Qian, Tiangui Hu, Jingyi Gao, Haihong Du, Li Wu, Yongfa Kong, Yi Zhang, and Jingjun Xu
Opt. Mater. Express 12(2) 665-672 (2022)

K⁺-doping-induced highly efficient red emission in CsPb(Br,I)₃ quantum dot glass toward Rec. 2020 displays

Xuejie Lv, Hang Lin, Ju Xu, Shisheng Lin, Yao Cheng, and Yuansheng Wang
Opt. Lett. 47(6) 1431-1434 (2022)

Highly emissive green CsPbBr₃/Cs₄PbBr₆ composites: formation kinetics, excellent heat, light, and polar solvent resistance, and flexible light-emitting application

Longshi Rao, Bin Sun, Qing Zhang, Mingfu Wen, Jiayang Zhang, Guisheng Zhong, Ting Fu, Xiaodong Niu, and Yong Tang
Opt. Express 30(25) 45376-45392 (2022)