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

Cecchini, Marco; Piazza, Vincenzo; Beltram, Fabio; Gevaux, D. G.; Ward, M. B.; Shields, A. J.; Beere, H. E.; Ritchie, D. A.
June 2005
Applied Physics Letters;6/13/2005, Vol. 86 Issue 24, p241107
Academic Journal
Electroluminescence emission from surface acoustic wave-driven light-emitting diodes (SAWLEDs) is studied by means of time-resolved techniques. We show that the intensity of the SAW-induced electroluminescence is modulated at the SAW frequency (∼1 GHz), demonstrating electron injection into the p-type region synchronous with the SAW wave fronts.


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