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

Claim 16:
17. 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;
thermally 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 silicon-based precursor and a first titanium-containing precursor; and
thermally 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 substrate is exposed to the second silicon-containing precursor as a last precursor in forming the TiSiN region,
wherein a combined thickness of the TiSi region and the TiSiN region does not exceed 10 nm.