Patent ID: 9741810
Date: 2017-08-22
CPC Classifications: H01L

Claim:
1. A structure comprising: a fin comprising: isolation structures comprising a dielectric material and on opposing sides of the fin, wherein the isolation structures contact sidewalls of the bottom semiconductor layer of the fin, wherein the isolation structures extend above an upper surface of the first insulating layer: a source region overlying the first end portion of the first semiconductor material, with the first semiconductor material disposed between the source region and the first insulating layer of the fin; a drain region overlying the second end portion of the first semiconductor material, with the first semiconductor material disposed between the drain region and the first insulating layer of the fin; a channel region between the source region and the drain region, the channel region comprising the middle portion of the first semiconductor material; and a second semiconductor material having a second lattice constant and a second linear thermal expansion constant surrounding the channel region, wherein a ratio of the first lattice constant to the second lattice constant is from 0.98 to 1.02, and wherein a ratio of the first linear thermal expansion constant to the second linear thermal expansion constant is greater than 1.2 or less than 0.8.