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

Claim 13:
14. A substrate processing method, comprising:
providing a substrate containing a metal surface and a dielectric material surface;
selectively forming a sacrificial capping layer containing a self-assembled monolayer on the metal surface, wherein the sacrificial capping layer prevents oxidation and contamination of the metal surface while waiting for further processing of the substrate;
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 that includes:
adsorbing a metal-containing catalyst layer on the dielectric material surface; and
in the absence of any oxidizing and hydrolyzing agent, at a substrate temperature of approximately 150° C., or less, exposing the substrate to a process gas containing a silanol gas to selectively deposit a SiO2 film on the dielectric material surface relative to the restored metal surface.