Patent ID: 7064066
Filing Date: 2006-06-20
Classification: H01L

Abstract:
1. A method for making a titanium carbide layer comprising: alternately introducing a carbon containing precursor and a titanium containing precursor at selected pulse times into a chemical vapor deposition reactor, while a substrate is maintained at a selected temperature; wherein the reactor is operated for a sufficient time, and pulse times are selected for the carbon containing precursor and the titanium containing precursor, to form a titanium carbide layer of a desired thickness and workfunction on the substrate; wherein, the titanium carbide layer is between about 10 angstroms and about 20 angstroms thick, and is a p-type titanium carbide layer; the selected temperature is between about 100° C. and about 250° C.; and the pulse time for the carbon containing precursor is between about 0.5 seconds and about 1 second.