Inventors:
Gerard C. DCouto - San Jose CA
George Tkach - Santa Clara CA
Michael Woitge - Dresden, DE
Michal Danek - Cupertino CA
Assignee:
Novellus Systems, Inc. - San Jose CA
International Classification:
H01L 2122
US Classification:
438656, 438625, 438643, 438694, 438648, 438679, 20419212, 20429809, 20429812
Abstract:
A method of depositing thin films comprising Ti and TiN within vias and trenches having high aspect ratio openings. The Ti and TiN layers are formed on an integrated circuit substrate using a Ti target in a non-nitrided mode in a hollow cathode magnetron apparatus in combination with controlling the deposition temperatures by integrating cooling steps into the Ti/TiN deposition processes to modulate the via and contact resistance. The Ti and TiN layers are deposited within a single deposition chamber, without the use of a collimator or a shutter.