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

Claim 12:
13. The silicon carbide semiconductor device according to claim 1, wherein:
the transition region has:
a modified silicon dioxide layer provided below the silicon dioxide layer;
a mixed layer provided below the modified silicon dioxide layer; and
a modified silicon carbide layer provided below the mixed layer,
and wherein
the maximum carbon concentration is higher in the order of the modified silicon carbide layer, the mixed layer, and the modified silicon dioxide layer,
the maximum oxygen concentration is higher in the order of the modified silicon dioxide layer, the mixed layer, and the modified silicon carbide layer,
the maximum nitrogen concentration is higher in the order of the mixed layer, the modified silicon dioxide layer, and the modified silicon carbide layer.