Patent ID: 7785939
Filing Date: 2010-08-31
Classification: H01L

Abstract:
1. A method of forming a planar hybrid-orientation substrate comprising: forming a bilayer template layer stack comprising a first, lower single crystal semiconductor layer having a first crystallographic orientation and a second, upper single crystal semiconductor layer having a second crystallographic orientation different from the first crystallographic orientation, said first, lower single crystal semiconductor layer has a bottom surface in direct contact with a buried insulator; amorphizing a portion of said first, lower single crystal semiconductor layer and a portion of said second, upper single crystal semiconductor layer in selected areas to form a localized amorphized region, wherein said localized amorphized region has a bottom surface in direct contact with an upper surface of said buried insulator and an upper surface that is located beneath an upper surface of said second, upper single crystal semiconductor layer; and recrystallizing the localized amorphized regions using a non-amorphized semiconductor portion of the second, upper single crystal semiconductor layer as a template, thereby changing the crystallographic orientation in the localized amorphized regions from an original crystallographic orientation to a desired crystallographic orientation, wherein the recrystallized region and the first, lower single crystal semiconductor layer each have a different crystallographic orientation and each have bottom surfaces that are disposed directly on said surface of said buried insulator.