Patent ID: 7618884
Filing Date: 2009-11-17
Classification: H01L,Y10S

Abstract:
1. A process for forming a SiC Schottky barrier diode comprising the steps of: providing a substrate of SiC with at least one surface having a highly doped layer of one conductivity type; forming an ohmic contact on said surface of said highly doped layer to provide one electrode of the diode; forming a lightly doped layer of SiC of the same one conductivity type on the other surface of said substrate to provide a drift region for the diode; forming a termination structure on the lightly doped layer of SiC by sputter-etching at least a portion of the surface of the lightly doped layer of SiC; forming a Schottky barrier contact on at least a portion of the termination structure of the lightly doped layer of SiC to provide the other electrode for the diode.