Patent ID: 7517800

Claim:
A manufacturing method of a semiconductor device including a titanium nitride film, comprising: a deposition step of forming a titanium nitride film by a chemical vapor deposition method; an anneal step of performing a heat treatment to the formed titanium nitride film in an atmosphere of ammonium gas; an ammonium gas purge step of purging said ammonium gas; and a step of further repeating said deposition step, said anneal step, and said ammonium gas purge step for at least one time, wherein said deposition step is performed using titanium halide gas and ammonium gas as material gases, and under a condition of a deposition temperature of 300° C.-450° C., a deposition pressure of 10 Pa-100 Pa, a partial pressure of titanium halide gas of 1 Pa-10 Pa, and a partial pressure of ammonium gas of 9 Pa-99 Pa, said titanium nitride film is formed by a thickness of 1 nm-5 nm for each said deposition step, said anneal step is performed for 2 seconds to 60 seconds, and said anneal step uses at least one of an anneal pressure 5 to 20 times as great as said deposition pressure and an anneal temperature higher than said deposition temperature by 25° C. -150° C.