Patent ID: 8053838

Claim:
A semiconductor structure, comprising: a dielectric layer; a central semiconductor fin region on and in direct physical contact with the dielectric layer, wherein the central semiconductor fin region consists of a first semiconductor material; a first semiconductor seed region on and in direct physical contact with the dielectric layer, wherein the first semiconductor seed region consists of the first semiconductor material; and a first strain creating fin region, wherein the first semiconductor seed region is sandwiched between the first strain creating fin region and the dielectric layer, wherein the first strain creating fin region comprises the first semiconductor material and a second semiconductor material different than the first semiconductor material, and wherein a first atom percent of the first semiconductor material in the first semiconductor seed region is different than a second atom percent of the first semiconductor material in the first strain creating fin region, a second semiconductor seed region on and in direct physical contact with the dielectric layer, wherein the second semiconductor seed region consists of the first semiconductor material, and wherein the central semiconductor fin region is disposed between the first and second semiconductor seed regions; and a second strain creating fin region, wherein the second semiconductor seed region is sandwiched between the second strain creating fin region and the dielectric layer, wherein the second strain creating fin region comprises the first semiconductor material and the second semiconductor material, wherein a third atom percent of the first semiconductor material in the second semiconductor seed region is different than a fourth atom percent of the first semiconductor material in the second strain creating fin region, wherein a first direction from the dielectric layer to the central semiconductor fin region is perpendicular to the dielectric layer, wherein a height of a top surface of the central semiconductor fin region above the dielectric layer in the first direction exceeds both a height of a top surface of the first semiconductor seed region above the dielectric layer in the first direction and a height of a top surface of the second semiconductor seed region above the dielectric layer in the first direction, and wherein the height of the top surface of the central semiconductor fin region above the dielectric layer in the first direction is equal to both a height of a top surface of the first strain creating fin region above the dielectric layer in the first direction and a height of a top surface of the second strain creating fin region above the dielectric layer in the first direction.