Highly efficient copper-based halide single crystals with violet emission for visible light communication

Yingrui Shi; Dehai Liang; Qionghua Mo; Shirong Lu; Zhe Sun; Hongbin Xiao; Qingkai Qian; Zhigang Zang

doi:10.1039/d2cc05965g

Highly efficient copper-based halide single crystals with violet emission for visible light communication

Chem Commun (Camb). 2023 Jan 12;59(5):583-586. doi: 10.1039/d2cc05965g.

Authors

Yingrui Shi¹, Dehai Liang¹, Qionghua Mo¹, Shirong Lu², Zhe Sun¹, Hongbin Xiao¹, Qingkai Qian¹, Zhigang Zang¹

Affiliations

¹ Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China. xiaohongbin@cqu.edu.cn.
² Department of Material Science and Technology, Taizhou University, Taizhou 318000, China.

PMID: 36524689
DOI: 10.1039/d2cc05965g

Abstract

K₂CuBr₃ single crystals (SCs) are synthesized using a cooling-induced crystallization method with violet emission due to self-trapped excitons (STEs) under photoexcitation. The prepared K₂CuBr₃ SCs exhibit a high photoluminescence quantum yield (PLQY, 79.2%) and excellent stability against moisture, heat and UV light. When the K₂CuBr₃ SCs are used as a light source for visible light communication the data transmission rate reaches a striking 248 Mbps, which is more than 33-fold the -3 dB bandwidth.