Patent ID: 8563385
Filing Date: 2013-10-22
Classification: H01L

Abstract:
1. A method for fabricating a field effect transistor device, the method comprising: forming a gate stack on a substrate; forming a spacer on the substrate, adjacent to the gate stack; forming a first portion of an active region on the substrate, the first portion of the active region having a first facet surface adjacent to the gate stack; forming a second portion of the active region on a portion of the first portion of the active region, the second portion of the active region having a second facet surface adjacent to the gate stack, the first facet surface and the second facet surface partially defining an enclosed cavity adjacent to the gate stack, wherein a bottom surface of the first portion is in contact with the first spacer and a top surface of the first portion is spaced away from the first spacer, and wherein a bottom surface of the second portion is spaced away from the first spacer and a top surface of the second portion is in contact with the first spacer.