Patent ID: 9704958
Date: 2017-07-11
CPC Classifications: H01L

Claim:
1. A method of forming a semiconductor device, the method comprising: forming a trench in a dielectric layer, the dielectric layer being present on a semiconductor substrate; forming a via within the trench, wherein the via extending from a base of the trench present at a depth within the dielectric layer to an exposed upper surface of the semiconductor substrate; epitaxially forming a III-V semiconductor material extending from the exposed upper surface of the semiconductor substrate filling at least a portion of the trench; forming a trench in the epitaxially formed III-V semiconductor to result in a first III-V semiconductor area comprising the via and a second III-V semiconductor area free of the via, wherein the trench in the epitaxially formed III-V semiconductor extends from a top surface through a bottom surface of the epitaxially formed III-V semiconductor; and forming the semiconductor device on the second III-V semiconductor area.