Patent ID: 8846504
Filing Date: 2014-09-30
Classification: H01L

Abstract:
1. A method of growing GaN material on a silicon substrate comprising the steps of: providing a single crystal silicon substrate with a (100) surface orientation or a (100) with up to 10° offset surface orientation; using epi-twist technology, epitaxially growing a single crystal stress managing layer on the silicon substrate, the single crystal stress managing layer including rare earth oxide with a (110) crystal orientation and a cubic crystal structure; epitaxially growing a single crystal buffer layer on the stress managing layer, the single crystal buffer layer including rare earth oxide with a lattice spacing closer to a lattice spacing of GaN than the rare earth oxide of the stress managing layer; and epitaxially growing a layer of single crystal GaN material on the surface of the buffer, the GaN material having one of a (11-20) crystal orientation and a (0001) crystal orientation.