Patent ID: 7217636
Filing Date: 2007-05-15
Classification: H01L

Abstract:
1. A method of fabricating a semiconductor-on-insulator semiconductor wafer comprising the steps of: providing a first semiconductor substrate; selecting a first material from a group consisting of SiO forming a first insulating layer of the first material on a surface of the first semiconductor substrate, forming the first insulating layer with a first predetermined stress; providing a second semiconductor substrate; selecting a second material from a group consisting of TiSi forming a second layer of the second material on a surface of the second semiconductor substrate, forming the second layer with a second predetermined stress different than the first predetermined stress; bonding the first insulating layer to the second layer to form a composite insulating layer bonding the first semiconductor substrate to the second semiconductor substrate; and removing a portion of one of the first semiconductor substrate and the second semiconductor substrate to form a thin crystalline active layer on the composite insulating layer.