Two-Dimensional Hybrid Organic-Inorganic Perovskite Nanosheets for Gb/s Visible-Light Communication

Abstract
With the rapid development of solid-state lighting and the congestion of radio-frequency communication data traffic, visible-light communication (VLC) has emerged as a versatile technology for simultaneous illumination and communication. However, the conventional color-converting phosphors integrated with light-emitting diodes (LEDs), or laser diodes (LDs) usually have limited optical modulation bandwidth due to the long carrier recombination lifetime, which is not suitable for high-speed multiple-wavelength data transfer based on phosphor-conversion VLC systems. Herein, we demonstrate a hybrid organic-inorganic perovskite nanosheets (NSs), i.e., (C8N9NH3)2PbI4 (PEPI), passivated by polymer, as a fast-acting color-converting phosphor for VLC. Compared to the PEPI micro-plates (μPs), the NSs exhibit a stronger excitonic effect with a shorter fluorescence lifetime of 877 ± 4.7 ps, leading to a broad –3-dB bandwidth of 192.8 MHz. Given the large bandwidth, a net data rate of 0.93 Gb/s was achieved based on an orthogonal frequency-division multiplexing (OFDM) modulation scheme. These investigations verified the feasibility of using two-dimensional hybrid organic-inorganic perovskite materials as a promising phosphor for future multi-Gb/s color-pure wavelength-division multiplexing systems.

Citation
Wang, Y., Wang, H., Alkhazragi, O., Mohammed, Z. O. F., Gutierrez-Arzaluz, L., Kang, C. H., Ng, T. K., & Ooi, B. S. (2022). Two-Dimensional Hybrid Organic-Inorganic Perovskite Nanosheets for Gb/s Visible-Light Communication. IEEE Photonics Technology Letters, 1–1. https://doi.org/10.1109/lpt.2022.3185843

Acknowledgements
This work was supported in part by King Abdullah University of Science and Technology (KAUST), BAS/1/1614-01-01. Chun Hong Kang, Tien Khee Ng and Boon S. Ooi acknowledge the support from the U.S. Office of Naval Research Global under award number N62909-19-1-2079 (KAUST reference number: RGC/3/4119-01-01).

Publisher
Institute of Electrical and Electronics Engineers (IEEE)

Journal
IEEE Photonics Technology Letters

DOI
10.1109/lpt.2022.3185843

Additional Links
https://ieeexplore.ieee.org/document/9804778/

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