Patent ID: 8450185

Claim:
A method for bonding a semiconductor to a diamond substrate, comprising: providing a structure comprising a GaN epitaxial layer having a bottom surface disposed on an underlying layer; forming grooves through the GaN to expose the underlying layer; applying a chemical etchant to the grooves to separate the GaN into a plurality of separate structures; removing the separated GaN structures from the underlying layer; and contacting the bottom surface of at least one of the separated GaN structures to the diamond substrate; wherein the bottom surface of at the least one of the separated GaN structures is bonded to the diamond substrate by Van der Waal forces wherein the diamond substrate is formed by a method comprising: polishing a surface of diamond to a first degree of smoothness; forming a material over the polished surface to provide an intermediate structure; re-polishing the material formed on the intermediate structure to a second degree of smoothness smoother than the first degree of smoothness.