Patent ID: 7285465
Filing Date: 2007-10-23
Classification: H01L

Abstract:
1. A method of manufacturing a silicon carbide (SiC) vertical MOSFET, the method comprising: forming an SiC mask on a surface of a layer of SiC, the SiC mask having side surfaces substantially parallel to a normal to the surface of the layer of SiC; implanting first ions into the layer of SiC through the surface in a direction forming an angle not larger than 70° with the surface, using the SiC mask as an ion implantation mask, to produce a base region having a first conductivity type in the layer of SiC; and implanting second ions into the layer of SiC through the surface in a direction substantially parallel to the normal, using the SiC mask as an ion implantation mask to produce a source region having a second conductivity type, opposite the first conductivity type, within the base region, so that channel length of the base region, measured along the surface, is at least 0.3 microns.