Patent ID: 11908900
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. An integrated chip, comprising:
a substrate comprising silicon, the substrate having interior sidewalls and a recessed upper surface that form a recess within an upper surface of the substrate;
a second semiconductor material arranged along the interior sidewalls and the recessed upper surface of the substrate, wherein the second semiconductor material comprises a group IV semiconductor or a group III-V compound semiconductor;
a passivation layer comprising silicon, wherein the silicon of the passivation layer contacts an uppermost surface of the second semiconductor material;
a first doped region having a first doping type and extending through the passivation layer and into the second semiconductor material; and
a second doped region having a second doping type and extending through the passivation layer and into the second semiconductor material, wherein the first doped region and the second doped region are separated from a bottommost surface of the second semiconductor material by the second semiconductor material.