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

Haocheng Tang; Yichi Zhong; Jingzhou Li; Luyang Hou; Xizhe Liang; Jiahao Zhang; Hongyu Yang; Hongxing Dong; Long Zhang

doi:10.1016/j.isci.2023.108173

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

iScience. 2023 Oct 11;26(11):108173. doi: 10.1016/j.isci.2023.108173. eCollection 2023 Nov 17.

Authors

Haocheng Tang^{1

2

3}, Yichi Zhong^{2

4}, Jingzhou Li^{2

3}, Luyang Hou^{1

2

3}, Xizhe Liang^{1

2

3}, Jiahao Zhang^{1

2

3}, Hongyu Yang^{2

3}, Hongxing Dong^{1

2

3}, Long Zhang^{1

2}

Affiliations

¹ Shanghai Institute of Optics and Fine Mechanic, Chinese Academy of Sciences, Shanghai 201800, China.
² Hangzhou Institute for Advanced Study, University of Chinese Academy of Science, Hangzhou 310024, China.
³ University of Chinese Academy of Sciences, Beijing 100049, China.
⁴ Department of Physics, College of Mathematics and Physics, Chengdu University of Technology, Chengdu 610059, China.

Abstract

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.

Keywords: Materials physics; Materials science; Physics.