Patent ID: 11955381
Assignee: APPLIED MATERIALS, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of pre-cleaning, the method comprising:
exposing a substrate on a pedestal, the substrate comprising a surface structure including a metal bottom surface comprising one or more of tungsten (W), cobalt (Co), or ruthenium (Ru), exposed sidewall surfaces comprising dielectric material, and a field of dielectric, to a plasma treatment comprising an oxygen plasma to remove chemical residual and/or impurities from the metal bottom surface, the exposed sidewall surfaces comprising dielectric material, and the field of the dielectric and/or repair surface defects in the exposed sidewall surfaces comprising dielectric material and the field of the dielectric; and
setting the plasma at a power and setting a temperature of the pedestal that comprises a cooling feature to greater than or equal to −20° C. and less than or equal to 60° C., wherein the pre-cleaning is effective to enhance selective metal deposition on the metal bottom surface.