Patent ID: 11929401
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 15:
16. A method comprising:
forming a fin from a substrate;
forming a gate structure over the fin;
etching a source/drain recess on a side of the gate structure;
removing etching byproducts from the source/drain recess, wherein during removing the etching byproducts a metal layer covers a pedestal that supports the substrate in a processing chamber, the metal layer disposed between the pedestal and the substrate;
exposing the source/drain recess to hydrogen radicals, forming a hydrogen compound at a surface of the source/drain recess;
transferring the substrate to a deposition chamber; and
growing an epitaxial source/drain region in the source/drain recess.