Patent ID: 11915973
Assignee: TOKYO ELECTRON LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. A method of processing a substrate, the method comprising:
providing a substrate containing a metal surface and a dielectric material surface, wherein the metal surface is not oxidized;
selectively forming a sacrificial capping layer containing a self-assembled monolayer on the metal surface, wherein the sacrificial capping layer prevents oxidation of the metal surface;
removing the sacrificial capping layer to restore the metal surface; and
after removing the sacrificial capping layer, selectively depositing a dielectric film on the dielectric material surface by a gas phase exposure, wherein the selectively forming the sacrificial capping layer on the metal surface includes:
exposing the substrate to reactant gas containing a chemical compound containing a carbon group, a bonding group coupled to the carbon group, a terminal group coupled to the carbon group that is opposite the bonding group, and an inert gas.