Demonstration of Core/Shell Narrow Band Quantum-dot Light-emitting Diode (QLED)-based Visible Light Communication

A visible light communication (VLC) system is demonstrated using a high-efficiency red-emitting quantum-dot LED (QLED), with charge balance optimization. The QLED exhibits a maximum external quantum efficiency (EQE) of 18.5% and delivers a high brightness of 147k nits. In the VLC setup, the system supports 115 Mbps data transmission utilizing PAM-4 modulation with feed-forward equalization.