Patent ID: 7704556
Filing Date: 2010-04-27
Classification: C23C

Abstract:
1. A method of forming a silicon nitride film on a substrate, the method comprising: providing a vacuum vessel chamber that includes an inner wall forming a film formation space in the vacuum vessel, a heating element, and a substrate holder, wherein the substrate holder and the heating element are arranged within the film formation space; the inner wall is thermally isolated from the vacuum vessel, and the temperatures of the inner wall and of the vacuum vessel are independently controlled; heating the inner wall to a predetermined temperature; maintaining a temperature of the inner wall to the predetermined temperature with a heating means and a cooling means arranged at the inner wall; introducing a raw material gas into the inner film formation space so that both the heating element and the substrate holder are exposed to the raw material gas introduced by the gas supply system; and decomposing or activating the raw material gas at a surface of said heating element and its vicinity to generate activated species and deposit a silicon nitride film on said substrate with said activated species.