Patent ID: 8946791
Filing Date: 2015-02-03
Classification: H01L

Abstract:
1. A semiconductor structure comprising a field effect transistor, said field effect transistor comprising: a plurality of semiconductor fins located on an insulator layer, wherein a body region is located within a portion of each semiconductor fin; a gate stack of a gate dielectric and a gate electrode straddling each of said body regions; an inner gate spacer laterally surrounding said gate stack and including first and second outer sidewalls straddling said plurality of semiconductor fins; source extension regions located on said plurality of semiconductor fins and in greater proximity to said first outer sidewall than to said second outer sidewall; drain extension regions located on said plurality of semiconductor fins and in greater proximity to said second outer sidewall than to said first outer sidewall; an outer gate spacer laterally surrounding said inner gate spacer; a contiguous raised source region contacting each of said source extension regions; and a contiguous raised drain region contacting each of said drain extension regions, wherein said source extension regions contact all top surfaces and sidewall surfaces of said plurality of semiconductor fins that are located farther away from said gate stack than said first outer sidewall.