Patent ID: 9412818
Filing Date: 2016-08-09
CPC Classification: H01L

Claim Text:
1. An apparatus comprising: a first fin field effect transistor (FinFET) device having an aspect ratio of at least 3 and extending from a surface of a first etch stop layer, the first FinFET device including a first fin comprising a first fin layer, a second fin layer on the first etch stop layer, and an intermediate layer between the first fin layer and the second fin layer, wherein the first fin layer and the second fin layer comprise a first compound material, and wherein the intermediate layer comprises a second compound material comprising a II-VI or III-V compound material; and a second FinFET device having an aspect ratio of less than 3 and extending from a surface of a second etch stop layer that is separated from the first etch stop layer by a compound layer.