Researchers enhance quantum LED response speeds significantly

Researchers have discovered that quantum light-emitting diodes (QLEDs) can improve their response speeds by utilizing an excitation-memory effect. This effect allows QLEDs to "remember" previous electrical pulses, enabling faster light emission. The study, conducted by teams from Zhejiang University and the University of Cambridge, found that QLEDs can operate at high modulation frequencies exceeding 100 MHz. This advancement positions them as strong candidates for high-speed optical communication applications. The researchers designed a micro-QLED that achieved a modulation frequency of 100 MHz and data transmission rates of up to 120 Mbps. They plan to further explore this effect and develop new materials to enhance QLED response speeds.