Patent ID: 6747291
Filing Date: 2004-06-08
Classification: H01L,Y10S

Abstract:
The method of fabricating a graphitic sp2 Carbon-enabled ohmic contact for a p-type Silicon Carbide semiconductor device, said method comprising the steps of:providing a cleaned surfaced wafer sample of p-type Silicon Carbide having a selected doping concentration of up to 1Ã—1019 atoms/cm3 and selected initial resistivity characteristics; covering said sample cleaned surface with a layer of amorphous sp2 and sp3 Carbon mixture; supplying a layer of Carbon conversion-accelerating catalytic elemental material over said sample layer of amorphous sp2 and sp3 Carbon mixture; converting a substantial portion of said catalytic elemental material layer-covered amorphous sp2 and sp3 Carbon mixture on said sample to elemental material-catalyzed graphitic sp2 Carbon; said converting step including a heat treating annealing of said sample at a temperature less than 1000Â° C. but sufficiently high to achieve ohmic contact electrical characteristics between said converted, element material catalyzed graphitic sp2 Carbon and said sample of p-type Silicon Carbide; and disposing an external circuit electrically conductive element in contact with a selected portion of said converted, element material catalyzed graphitic sp2 Carbon.