Patent ID: 7265030
Filing Date: 2007-09-04
Classification: H01L,Y10S

Abstract:
1. A method of fabricating a silicon-on-glass layer via layer transfer comprising: seriatim preparing a silicon substrate; depositing a layer of SiGe on the silicon substrate; depositing a layer of silicon on the SiGe layer; preparing a glass substrate; bonding the glass substrate to the silicon layer to form a composite wafer; splitting the composite wafer to provide a split wafer having, in seriatim, a glass substrate, a layer of silicon; a layer of SiGe; and silicon layer split from the silicon substrate; dry etching the split wafer to remove the silicon layer split from the silicon substrate and a portion of the SiGe layer; annealing the split wafer to increase the bond between the silicon and the glass substrate; selectively etching the split wafer to remove any remaining SiGe, thereby forming a silicon on glass wafer; completing a desired IC device on the silicon on glass wafer.