Effect of ion migration on lead halide perovskite on visible light communication system

• Published in: iScience Vol. 26; no. 11; p. 108173
• Main Authors: Tang, Haocheng, Zhong, Yichi, Li, Jingzhou, Hou, Luyang, Liang, Xizhe, Zhang, Jiahao, Yang, Hongyu, Dong, Hongxing, Zhang, Long
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 17.11.2023; Elsevier
• Subjects: Materials physics; Materials science; Physics; Materials physics; Materials science; Physics
• ISSN: 2589-0042; 2589-0042
• DOI: 10.1016/j.isci.2023.108173

Benefiting from the high modulation bandwidth (BW), low energy consumption and excellent optical performance, lead halide perovskite has attracted wide attention in visible light communication (VLC). However, the ion migration which results in mobile point defects in perovskite structures is recognized as a crucial key factor inducing the performance degradation. Here, the influence of ion migration in perovskite devices on the performance of VLC was systematically studied. The ion migration process is realized by mixing CsPbBr3 and CsPbI3 quantum dots, during which, the performance of the VLC system is reduced, but it can return to its initial state after stabilization. The on-off keying (OOK) modulation scheme of the perovskite light-emitting diode (LED) device was carried out, achieving a data rate of 90 Mbps. [Display omitted] •The ion migration process is realized by mixing CsPbBr3 and CsPbI3 quantum dots•PL lifetime variations of perovskite LED device during ion migration are measured•The modulation scheme of the perovskite LED device achieved a data rate of 90 Mbps Physics; Materials science; Materials physics