CsPbBr₃ perovskite quantum-dot paper exhibiting a highest 3  dB bandwidth and realizing a flexible white-light system for visible-light communication

Abstract

We propose a flexible white-light system for high-speed visible-light communication (VLC) applications, which consists of a semipolar blue InGaN/GaN single-quantum-well micro-light-emitting diode (LED) on a flexible substrate pumping green CsPbBr 3 perovskite quantum-dot (PQD) paper in nanostructure form and red CdSe QD paper. The highest bandwidth for CsPbBr 3 PQD paper, 229 MHz, is achieved with a blue micro-LED pumping source and a high data transmission rate of 400 Mbps; this is very promising for VLC application. An 817 MHz maximum bandwidth and a 1.5 Gbps transmission speed are attained by the proposed semipolar blue micro-LEDs. The proposed flexible white light system and the high-bandwidth PQD paper could pave the way for VLC wearable devices.

4.2: Invited Paper: CsPbBr3 perovskite quantum‐dot paper exhibiting highest 3‐dB bandwidthand realizing flexible white‐light system for visible‐light communication

“…The fabrication method of CsPbBr3 PQD, CdSe QD paper and semipolar micro-LED device have been introduced in our previous article (11). The Schematic of semipolar micro-LED structure is shown in Fig 1(a), and the photograph of PQD, QD paper is shown in Fig 1(b).…”

Full-Color Micro-LED Devices Based on Quantum Dots

“…The outstanding performance of semipolar μLEDs in display and communication has also led researchers to combine it with QDs to make high-performance full-color display devices with VLC potential. In 2021, Singh et al proposed a flexible white-light system for high-speed VLC applications [54]. The white-light system fabrication process is shown in Figure 8.…”

Recent progress and future prospects on halide perovskite nanocrystals for optoelectronics and beyond

“…proposed a flexible white-light system for high-speed VLC applications. The white-light system consists of a semipolar blue InGaN/GaN single-quantum-well micro-LED (μ-LED) on a flexible substrate for pumping a green CsPbBr 3 -NC paper and a red CdSe NC paper ( Singh et al., 2021 ). A high bandwidth of 229 MHz and a high data transmission rate of 400 Mbps were achieved for the CsPbBr 3 -NC paper with a blue μ-LED pumping source ( Figures 23 D and 23E).…”

“…Inset shows the eye diagram for the perovskite-NC paper. Figures D and E reprinted from ( Singh et al., 2021 ). Copyright © 2021, Chinese Laser Press.…”