Patent ID: 7015117

Claim:
A method of processing GaN comprising: (a) growing a GaN epitaxial layer on a top surface of a sapphire substrate; (b) patterning said GaN layer; (c) attaching a support structure to said GaN layer; (d) radiating with a laser directed at a bottom surface of said sapphire substrate, wherein a wavelength of said laser is selected to cause energy of said laser to be substantially absorbed near an interface of said GaN layer with said sapphire so as to delaminate said GaN and create an exposed GaN surface; (e) removing said sapphire substrate; (f) depositing a secondary substrate onto said exposed GaN surface, wherein said secondary substrate includes: (i) a first contact layer selected from the group consisting of Ti/Al and Ag; (ii) a second layer of Cr/Au on said first layer; and (iii) a third layer of metal on said second layer.