Patent ID: 11894423
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 12:
13. A semiconductor device, comprising:
a nanosheet field-effect transistor device disposed on a semiconductor substrate, wherein the nanosheet field-effect transistor device comprises:
a nanosheet stack structure comprising a semiconductor channel layer;
a source/drain region in contact with an end portion of the semiconductor channel layer of the nanosheet stack structure; and
a metal-based source/drain contact material disposed in a trench in the source/drain region;
wherein the source/drain region has a uniform thickness along the end portion of the semiconductor channel layer of the nanosheet stack structure;
wherein the source/drain region is disposed on the end portion of the semiconductor channel layer and on a portion of an oxide layer disposed over a portion of the semiconductor substrate; and
wherein the trench extends through the source/drain region to the oxide layer.