Patent ID: 9490327
Filing Date: 2016-11-08
CPC Classification: H01L

Claim Text:
1. A semiconductor device comprising: a semiconductor substrate; an n-type SiC layer provided on one side of the semiconductor substrate; a p-type first SiC region provided in the n-type SiC layer; a metallic second SiC region provided in the p-type first SiC region, the metallic second SiC region comprising at least one element selected from the group of Mg (magnesium), Ca (calcium), Sr (strontium), Ba (barium), Sc (scandium), Y (yttrium), La (lanthanum), Ce (cerium), Pr (praseodymium), Nd (neodymium), Pm (promethium), Sm (samarium), Eu (europium), Gd (gadolinium), Tb (terbium), Dy (dysprosium), Ho (holmium), Er (erbium), Tm (thulium), Yb (ytterbium), and Lu (lutetium); a gate electrode; a gate insulating film provided between the gate electrode and the n-type SiC layer, the gate insulating film provided between the gate electrode and the first SiC region; a first electrode provided on the metallic second SiC region; and a second electrode provided on a side of the semiconductor substrate opposite to the n-type SiC layer, wherein the metallic second SiC region comprising the at least one element is directly under the gate insulating film.