Patent ID: 7691688

Claim:
A method of fabricating a strained Si-containing hybrid substrate comprising: providing a hybrid substrate comprising a first semiconducting layer of a first crystallographic orientation, a buried insulating layer located on a surface of the first semiconductor layer and a second semiconducting layer of a second crystallographic orientation which is different from the first crystallographic orientation located on said buried insulating layer; providing an opening that extends to a surface of the first semiconducting layer, wherein said providing said opening comprises forming a patterned hard mask layer atop said hybrid substrate and etching; and regrowing a semiconductor material on said first semiconducting layer in said opening, said semiconductor material having the first crystallographic orientation, with the provision that a strained Si layer is formed overlying at least one of the second semiconducting layer or the regrown semiconductor material, said Si layer having a crystallographic orientation that matches that of said underlying second semiconducting layer or the regrown semiconductor material.