Dielectric-assisted liftoff technique for the formation and monolithic integration of electronic and optical devices

Abstract
A technique for the selective growth and patterning of device quality materials has been developed. This technology uses a dielectric-assisted liftoff (DAL) process to pattern molecular beam epitaxy (MBE) grown GaAs into isolated device regions. We have successfully demonstrated the applicability of this dielectric-assisted liftoff process by fabricating power metal-semiconductor field-effect transistor (MESFET) devices with 1, 1.5, and 3 mm gate width geometries. Material and device performance of these DAL patterned MESFETs has been found to be comparable to our standard MBE-grown and mesa isolated MESFET structures.