Patent ID: 7327036
Filing Date: 2008-02-05
Classification: H01L,Y10S

Abstract:
1. A method for forming a device comprising a Group III-nitride material on silicon, comprising the steps of: providing a substrate consisting essentially of silicon and comprising a porous top layer; depositing on the silicon substrate with the porous top layer a substance comprising Ge, thereby forming a second layer comprising a Ge material; thermally annealing the silicon substrate with the second layer comprising a Ge material, thereby forming a transformed second layer comprising SiGe on the top layer; and subjecting the silicon substrate with the transformed second layer comprising SiGe to a substance comprising a Group III element and a substance comprising N by a metal organic chemical vapour deposition process at a temperature of from about 1000° C. to about 1100° C., thereby forming a further layer comprising a Group III-nitride single crystal material on the transformed second layer.