Patent ID: 11189493

Abstract:
A silicon carbide semiconductor device includes a silicon carbide semiconductor substrate having a front surface and a rear surface, and an ohmic electrode in ohmic contact with silicon carbide of at least one of the front surface or the rear surface of the silicon carbide semiconductor substrate. The ohmic electrode is made of Ni containing 0.1 wt % or more and 15 wt % or less of P as an impurity. The ohmic electrode contains Ni silicide including NiSi. The ohmic electrode further contains Ni5P2 in the Ni silicide. A method for manufacturing the silicon carbide semiconductor device includes forming a metal thin film on the silicon carbide that is to be in ohmic contact with the ohmic electrode, and forming the ohmic electrode by laser annealing that includes irradiating the metal thin film with laser light and reacting the Ni with Si in the silicon carbide to generate Ni silicide.