Patent ID: 7220626
Filing Date: 2007-05-22
Classification: H01L,Y10S

Abstract:
1. A method of forming a semiconductor substrate comprising: providing an initial structure having a first device region and a second device region positioned on and separated by an insulating material, said first device region comprising a first orientation material and said second device region comprising an insulating layer atop a second orientation material; wherein said first orientation material and said second orientation material have a different crystallographic orientation; forming a first concentration of lattice modifying material atop the first orientation material; removing said insulating layer; forming a second concentration of said lattice modifying material atop said second orientation material; intermixing said first concentration of lattice modifying material with said first orientation material to produce a first lattice dimension surface and said second concentration of lattice modifying material with said second orientation material to produce a second lattice dimension surface; and forming a first strained semiconducting layer atop said first lattice dimension surface and a second strained semiconducting layer atop said second lattice dimension surface, wherein said first strained semiconducting layer and said second strained semiconducting layer have said different crystallographic orientation.