Patent ID: 9059248
Filing Date: 2015-06-16
Classification: H01L

Abstract:
1. A method of forming a semiconductor device comprising: forming well trenches on opposing sides of a gate structure by removing portions of a semiconductor on insulator (SOI) layer of an semiconductor on insulator (SOI) substrate, wherein the base of the well trenches is provided by a surface of a buried dielectric layer of the SOI substrate and sidewalls of the well trenches are provided by a remaining portion of the SOI layer; forming a dielectric fill material at the base of the well trenches, wherein the dielectric fill material is in contact with the sidewalls of the well trenches and at least a portion of the surface of the buried dielectric layer that provides the base of the well trenches; and forming a source region and a drain region in the well trenches with an in-situ doped epitaxial semiconductor material.