Patent ID: 11888035
Assignee: FUJI ELECTRIC CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. The silicon carbide semiconductor device according to claim 13, wherein:
the modified silicon carbide layer has:
a nitrided imperfect silicon carbide layer provided below the mixed layer;
an imperfect silicon carbide layer provided below the nitrided imperfect silicon carbide layer and not containing nitrogen; and
an amorphous silicon carbide layer provided below the imperfect silicon carbide layer and not containing oxygen,
and wherein:
the modified silicon dioxide layer has:
a carbon-containing imperfect silicon dioxide layer provided above the mixed layer; and
an imperfect silicon dioxide layer provided above the carbon-containing imperfect silicon dioxide layer and not containing carbon.