Patent ID: 9064685
Filing Date: 2015-06-23
Classification: H01L

Abstract:
1. A semiconductor device comprising: a base layer comprising a Group III-V material; a first release layer comprising a Group III-V material overlying the base layer, wherein the first release layer includes a first dopant material; a first epitaxial layer portion comprising a Group III-V material overlying the first release layer; a second release layer comprising a Group-III-V material overlying the first epitaxial layer portion, wherein the second release material includes a second dopant material and has a different absorption coefficient compared to the first release layer; and a second epitaxial layer portion comprising a Group III-V material overlying the second release layer, wherein the first release layer is configured to absorb greater than 50% of radiation of a first wavelength and the second release layer is configured to transmit substantially all of the radiation of the first wavelength.