Patent ID: 11932935
Assignee: ENTEGRIS, INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC C | IPC C

Claim 9:
10. A process for the vapor deposition of a molybdenum or tungsten-containing film onto a surface of a microelectronic device in a reaction zone, the reaction zone operated at a pressure of about 1 to about 1000 Torr and a temperature of about 300° C. to about 1000° C.;
wherein the surface is chosen from nitrides, oxides, metals, semiconductors, and superconductors, which comprises:
a. continuously introducing into a reaction zone containing the surface, a molybdenum or tungsten precursor, wherein a first precursor concentration in the reaction zone is about 1 to about 5000 ppm at its peak, while continuously introducing into the reaction zone a reducing gas until a film having a thickness of about 3 Å to about 25 Å has been deposited with a smooth surface morphology, and
b. continuously introducing into a reaction zone containing the surface, the molybdenum or tungsten precursor, thereby reaching a second precursor concentration, wherein the second precursor concentration in the reaction zone is about 1.3 to about 100 times the first precursor concentration, while continuously introducing into the reaction zone a reducing gas, until a film having a desired thickness has been deposited.