Patent ID: 6274496
Filing Date: 2001-08-14
Classification: C23C,H01L

Abstract:
A method of depositing a stack that includes titanium and titanium nitride films on a wafer surface in a single chamber, comprising the steps of:placing a substrate having a wafer surface in a reaction chamber in spaced relation from a showerhead;depositing a titanium film onto the wafer surface in the chamber by forming within the chamber a first plasma of a gas mixture comprising a titanium halide and hydrogen;nitriding the deposited titanium film within the chamber by creating a second plasma of a gas selected from the group consisting of ammonia, nitrogen and a mixtures thereof; anddepositing a titanium nitride film on the nitrided deposited titanium film in the chamber by a thermal CVD process using a gas mixture comprising a titanium halide and a nitrogen source gas.