Patent ID: 11942365
Assignee: EUGENUS, INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 0:
1. A method of forming an electrically conductive diffusion barrier, the method comprising:
providing a substrate comprising an exposed silicon surface formed of monocrystalline silicon or polycrystalline silicon in a reaction chamber;
forming a titanium silicide (TiSi) region of the diffusion barrier directly on the exposed silicon surface of the substrate by alternatingly exposing the substrate to a first titanium-containing precursor and a first silicon-containing precursor; and
forming a titanium silicon nitride (TiSiN) region of the diffusion barrier directly on the TiSi region by alternatingly exposing the substrate to a second titanium-containing precursor, a nitrogen-containing precursor and a second silicon-containing precursor,
wherein the TiSi region and the TiSiN region are formed in situ, and
wherein a combined thickness of the TiSi region and the TiSiN region does not exceed 10 nm.