Patent ID: 8728935

Claim:
A method of manufacturing a semiconductor device, comprising: (a) loading a substrate into a processing container; (b) forming a metal film including a titanium aluminum nitride film on the substrate using a chemical deposition method by supplying a processing gas into the processing container and exhausting the processing gas; (c) forming an aluminum nitride film on the metal film using the chemical deposition method by supplying an aluminum-containing source gas and a nitrogen-containing gas into the processing container and exhausting the aluminum-containing source gas and the nitrogen-containing gas; and (d) unloading the substrate from the processing container after forming the metal film and the aluminum nitride film, wherein the step (b) and the step (c) are continuously performed while maintaining an inside of the processing container to have an oxygen-free atmosphere; (e) exposing the metal film by etching the aluminum nitride film under an oxygen-free atmosphere; and (f) forming an upper film including a metal on the metal film after performing the step (e), wherein the step (b) comprises forming the titanium aluminum nitride film by one of a chemical vapor deposition method and an atomic layer deposition method using a titanium-containing source gas, the aluminum-containing source gas and the nitrogen-containing gas, wherein the step (c) comprises forming the aluminum nitride film by the atomic layer deposition method using the aluminum-containing source gas and the nitrogen-containing gas, and wherein the step (e) and the step (f) are continuously performed under the oxygen-free atmosphere.