Patent ID: 6103566
Filing Date: 2000-08-15
Classification: C23C,H01L

Abstract:
A method for manufacturing a semiconductor integrated circuit device, comprising the steps of:(a) forming a capacitor insulating film of tantalum oxide over a lower electrode over a first major surface of a semiconductor substrate;(b) annealing the capacitor insulating film at a first temperature; and then(c) depositing an upper electrode of titanium nitride over the capacitor insulating film at a second temperature lower than the first temperature, wherein the step (c) comprises substeps of:(i) introducing a titanium-containing source gas into a reaction chamber where the semiconductor substrate has been introduced; and(ii) subsequent to substep (i), introducing a nitrogen-containing reducing gas into the reaction chamber, while introducing the titanium-containing source gas into the reaction chamber, thereby depositing a titanium nitride film constituting the upper electrode.