Patent ID: 7867900

Claim:
A method for depositing materials on a substrate, comprising: forming a cobalt silicide layer on a silicon-containing surface of a substrate during a silicidation process, wherein forming the cobalt silicide layer comprises: depositing a cobalt-containing layer on the silicon-containing surface of the substrate; heating the substrate to a first temperature to form cobalt silicide during a first rapid thermal annealing process; substantially removing any remaining portions of the cobalt-containing layer from the substrate during an etching process; and heating the substrate to a second temperature during a second rapid thermal annealing process; forming a fluorinated sublimation film on the cobalt silicide layer during a plasma process; heating the substrate to a sublimation temperature to remove the fluorinated sublimation film; depositing a titanium-containing nucleation layer on the cobalt silicide layer, wherein depositing the titanium-containing nucleation layer comprises: depositing a metallic titanium layer on the cobalt silicide layer during a vapor deposition process; depositing a first titanium nitride layer on the metallic titanium layer during a first chemical vapor deposition process; exposing the first titanium nitride layer to a first inert gas plasma; depositing a second titanium nitride layer on the first titanium nitride layer during a second chemical vapor deposition process; and exposing the second titanium nitride layer to a second inert gas plasma; and depositing an aluminum material on the titanium-containing nucleation layer, wherein depositing the aluminum material over the titanium-containing nucleation layer comprises: depositing a first aluminum-containing layer over the titanium-containing nucleation layer during a chemical vapor deposition process, wherein the first aluminum-containing layer is deposited by exposing the substrate to an organic-metallic aluminum precursor during the chemical vapor deposition process; and depositing a second aluminum-containing layer over the first aluminum-containing layer.