iScience (Nov 2023)

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

Journal volume & issue
Vol. 26, no. 11
p. 108173

Abstract

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Summary: 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.

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