Patent ID: 8921210

Claim:
A method of forming a semiconductive substrate material for an electronic device comprising: forming a base layer comprising a Group III-V material overlying a substrate in a reaction chamber, wherein forming the base layer comprises a hydride vapor phase epitaxy (HVPE) process and alternating a 3D growth mode and a 2D growth mode more than one time; continuing to grow the Group III-V material and introducing a first dopant material into the reaction chamber to form a first release layer overlying the base layer, wherein formation of the release layer includes forming the release layer in a 2D growth mode or a 3D growth mode; continuing to grow the Group III-V material and removing the dopant from the reaction chamber to form a first epitaxial layer portion overlying the first release layer; continuing to grow the Group III-V material and introducing a second dopant material into the reaction chamber to form a second release layer overlying the first epitaxial layer portion, wherein the second release layer has a different absorption coefficient compared to the first 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; and separating the first epitaxial layer portion from the base layer at the first release layer using radiation of the first wavelength impinging on the first release layer.