Patent ID: 7981794
Filing Date: 2011-07-19
Classification: C23C,H01L

Abstract:
1. A film forming method of forming a titanium film or a titanium compound film on a target substrate in a processing chamber, comprising: a titanium silicide film formation step of forming a titanium silicide film on the target substrate; and a titanium film formation step of forming a titanium film on the titanium silicide film, wherein the titanium silicide film formation step is performed by repeating: a first step of introducing titanium compound gas into the processing chamber and adsorbing the titanium compound gas onto a surface of the target substrate, a second step of stopping the introduction of the titanium compound gas into the processing chamber to thereby remove the titanium compound gas remaining in the processing chamber, and a third step of generating plasma in the processing chamber while introducing hydrogen gas into the processing chamber to thereby reduce the titanium compound gas adsorbed onto a silicon-containing surface of the target substrate, and of reacting the titanium compound gas with silicon of the silicon-containing surface to thereby form the titanium silicide film, and the first to the third steps are sequentially performed in that order twice or more, wherein the titanium film formation step is performed by repeating: a fourth step of generating plasma in the processing chamber while introducing the titanium compound gas and the hydrogen gas into the processing chamber to thereby form the titanium film on the target substrate, and a fifth step of stopping introduction of the titanium compound gas into the processing chamber while maintaining the plasma to thereby perform plasma annealing on the titanium film.