Surface acoustic wave-induced electroluminescence intensity oscillation in planar light-emitting devices

摘要

Electroluminescence emission from surface acoustic wave-driven light-emittingdiodes (SAWLEDs) is studied by means of time-resolved techniques. We show thatthe intensity of the SAW-induced electroluminescence is modulated at the SAWfrequency (~1 GHz), demonstrating electron injection into the p-type regionsynchronous with the SAW wavefronts.