Patent ID: 7273814
Filing Date: 2007-09-25
Classification: C23C,H01L

Abstract:
1. A method for forming a ruthenium metal layer, comprising: providing a patterned substrate in a process chamber of a deposition system, wherein the patterned substrate comprises one or more vias or trenches, or combinations thereof; heating the patterned substrate to a first temperature and establishing a first pressure within the process chamber; depositing a first ruthenium metal layer on the patterned substrate while maintaining the first temperature and the first pressure in an atomic layer deposition process comprising the alternating steps of first, exposing the substrate to a ruthenium organometallic precursor, and second, exposing the substrate to H increasing the temperature of the patterned substrate from the first temperature to a higher second temperature and increasing the pressure in the process chamber from the first pressure to a higher second pressure; and depositing a second ruthenium metal layer on the first ruthenium metal layer while maintaining the second temperature and the second pressure in a thermal chemical vapor deposition process comprising concurrently exposing the patterned substrate to a ruthenium organometallic precursor and H