Epitaxial lift-off GaAs LEDs to Si for fabrication of opto-electronic integrated circuits

The authors report, for the first time, the successful integration of GaAs LEDs on Si using the epitaxial lift-off technique. LEDs were processed after the transfer and could be aligned to features on the Si substrate. LED contacts were defined on both sides of the thin layer. Operation characteristics similar to those of LEDs grown on GaAs were observed. This realisation holds out interesting prospects in the fabrication of quasi-monolithic opto-electronic integrated circuits.