Patent ID: 8716752
Filing Date: 2014-05-06
Classification: H01L

Abstract:
1. A structure, comprising: a substrate; a first dielectric layer on the substrate, the first dielectric layer having a central portion and raised outer portions; a first stack of layers on the first dielectric layer, the first stack of layers having a first edge and a second edge, the first stack of layers including: first sidewalls formed adjacent to the first edge and the second edge of the first stack of layers; a first gate electrode strip on the first stack of layers, the first gate electrode strip having a first portion over the second biaxially strained single crystal silicon layer and a second portion adjacent to sides of the second biaxially strained single crystal silicon layer, a bottom surface of the second portion being closer to the substrate than the second biaxially strained single crystal silicon layer; second sidewalls formed adjacent to the first gate electrode strip; and a second dielectric layer between the first biaxially strained single crystalline silicon layer and the central portion of the first dielectric layer, the second dielectric layer being between the first sidewalls and the raised outer portions of the first dielectric layer, the second dielectric on exposed portions of a top surface of the second biaxially strained single crystalline silicon layer, and on the first gate electrode strip.