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

• Published in: IEEE photonics technology letters Vol. 34; no. 14; pp. 753 - 756
• Main Authors: Wang, Yue, Wang, Hong, Alkhazragi, Omar, Mohammed, Zyad O. F., Gutierrez-Arzaluz, Luis, Kang, Chun Hong, Ng, Tien Khee, Ooi, Boon S.
• Format: Journal Article
• Language: English
• Published: New York IEEE 15.07.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: 2D hybrid organic-inorganic perovskite; Bandwidth; Bandwidths; Carrier recombination; Color; Communication; Communications traffic; Conversion; Data communication; Data transfer (computers); Fast-acting phosphors; Illumination; Laser beams; Light emitting diodes; Light modulation; Nanosheets; OFDM; Optical communication; Optical filters; optical wireless communication; Orthogonal Frequency Division Multiplexing; Perovskites; Phosphors; Semiconductor lasers; Traffic congestion; Wavelength division multiplexing; Wireless communication
• ISSN: 1041-1135; 1941-0174
• DOI: 10.1109/LPT.2022.3185843

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., (C 8 N 9 NH 3 ) 2 PbI 4 (PEPI), passivated by polymer, as a fast-acting color-converting phosphor for VLC. Compared to the PEPI micro-plates (<inline-formula> <tex-math notation="LaTeX">\mu </tex-math></inline-formula>Ps), 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.