Patent ID: 8440517
Filing Date: 2013-05-14
Classification: H01L

Abstract:
1. A method of fabricating a fin field effect transistor (FinFET) comprising: providing a substrate having a first insulation region and a second insulation region having respective top surfaces, and a fin between the first and second insulation regions, wherein the top surfaces of the first and second insulation regions are below a top surface of the fin; forming a gate stack over a portion of the fin and over a portion of the first and second insulation regions; recessing a portion of the fin not covered by the gate stack to form a recessed portion of the fin below the top surfaces of the first and second insulation regions; etching corners of the top surfaces of the first and second insulation regions not covered by the gate stack to form tapered top surfaces of the first and second insulation regions; and selectively growing a strained material over the recessed portion of the fin and the tapered top surfaces of the first and second insulation regions.