Patent ID: 9601381
Date: 2017-03-21
CPC Classifications: H01L

Claim:
1. A fin field effect transistor (FinFET) device, comprising: a plurality of elongated fins formed of a first semiconductor material and an insulating material, the first semiconductor material being separated from an underlying substrate material by the insulating material, said first semiconductor material defining a plurality of channel regions; an elongated gate formed of a second semiconductor material, said elongated gate extending to cross over the plurality of elongated fins at said channel regions, wherein said first semiconductor material and said insulating material of each of the elongated fins are not present on both a source side and a drain side of the elongated gate; a sidewall spacer on a side wall of both the source side and the drain side of said elongated gate; a protective material covering the underlying substrate material on the source side and the drain side of the elongated gate and including a plurality of trenches, with each trench of the plurality of trenches being adjacent to a corresponding one of the plurality of channel regions, the protective material comprising a plurality of portions separated from each other by the plurality of trenches, respectively, said protective material comprising: an epitaxial semiconductor material including: wherein each of the first portions of the epitaxial semiconductor material directly contacts the underlying substrate material and the insulating material interposed between the underlying substrate material and the corresponding one of the plurality of channel regions, and wherein each of the portions of the protective material is embedded in the epitaxial semiconductor material and directly contacts the underlying substrate material.