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

Claim 6:
7. An integrated circuit, comprising:
one or more semiconductor devices, wherein at least one of the semiconductor devices comprises:
a nanosheet field-effect transistor device disposed on a semiconductor substrate, wherein the nano sheet field-effect transistor device comprises:
a plurality of nanosheet stack structures each comprising a plurality of semiconductor channel layers;
a gate structure on the nanosheet stack structures;
a gate sidewall spacer on the gate structure;
a source/drain region in contact with sidewalls of the nanosheet stack structures and on a portion of the gate sidewall spacer to define a trench between opposing sidewalls; and
a metal-based material disposed in the trench, on a top surface of the source/drain region and on the gate sidewall spacer;
wherein the source/drain region is disposed on the sidewalls of the nanosheet stack structures and on a portion of an oxide layer disposed over a portion of the semiconductor substrate;
wherein the source/drain region has a uniform thickness along the sidewalls of the nanosheet stack structures and on the portion of the gate sidewall spacer; and
wherein the trench extends through the source/drain region to the oxide layer.