Patent ID: 9041027
Filing Date: 2015-05-26
Classification: C30B,H01L

Abstract:
1. A method of producing a semiconductor device comprising: growing a crystalline buffer material on a crystalline surface of a spinel substrate comprising MgAl growing a first crystalline semiconductor material on the sacrificial buffer layer by lattice-matching epitaxy or coincident site lattice-matching epitaxy to form a first device layer comprising at least one of a III-V semiconductor material, a III-V semiconductor alloy, a II-VI semiconductor material, a II-VI semiconductor alloy, or mixtures thereof on the sacrificial buffer layer; and separating the first device layer from the crystalline spinel substrate surface using an epitaxial liftoff method chosen from chemical etching of the crystalline buffer material or melting of the buffer material to produce a semiconductor device comprising the first device layer.