Patent ID: 8029856

Claim:
A film formation method comprising: setting a substrate inside a processing vessel held in a vacuum; reacting carboxylic acid with an oxygen-containing metal compound to produce carboxylate salt gas of a metal of the metal compound; supplying the carboxylate salt gas of the metal onto the substrate inside the processing vessel; and applying energy to the substrate inside the processing vessel to decompose the carboxylate salt of the metal supplied onto the substrate, thereby forming a metal film, wherein the carboxylate salt gas is formed outside the processing vessel by reacting the carboxylic acid with the oxygen-containing metal compound, and supplied into the processing vessel through a pipe, and the pipe includes an inner surface coated with the oxygen-containing metal compound, and the carboxylate salt gas is produced by causing a carboxylic acid gas serving as the carboxylic acid to flow through the pipe.