Patent ID: 9406506
Filing Date: 2016-08-02
CPC Classification: H01L

Claim Text:
1. A semiconductor structure comprising: a semiconductor substrate; an epitaxial blanket layer comprising III-V semiconductor material on a top surface of the semiconductor substrate, the epitaxial blanket layer comprising a first III-V semiconductor sub-layer directly contacting the semiconductor substrate and a second III-V semiconductor sub-layer over the first III-V semiconductor layer, the second III-V semiconductor sub-layer having a larger lattice constant than the first III-V semiconductor sub-layer, the first III-V semiconductor sub-layer including misfit defects; a plurality of parallel, dielectric regions extending vertically from and adjoining a top surface of the epitaxial blanket layer, the parallel, dielectric regions defining a plurality of vertically extending trenches, and an epitaxial second layer comprising III-V semiconductor material directly contacting the second III-V semiconductor sub-layer of the epitaxial blanket layer and positioned within the vertically extending trenches.