Patent ID: 7718553
Filing Date: 2010-05-18
Classification: C23C,H01L

Abstract:
1. A method for forming an insulation film on a semiconductor substrate by plasma reaction, comprising: providing a substrate having an irregular surface including concave portions placed on a susceptor in a reaction chamber; introducing into the reaction chamber a process gas comprising: (i) a source gas of a silicon-containing hydrocarbon compound comprising in its molecule at least one Si—O bond and at least one bond selected from the group consisting of a Si—Si bond, Si—N bond, and Si—H bond; (ii) an additive gas constituted by C, H, and optionally O; (iii) an oxidizing gas; and (iv) an inert gas; controlling the temperature of the susceptor at −50° C. to 50° C., and flow rates of the respective gases to satisfy the following relationship: (i)<(iii)<(ii)<(iv); and depositing by plasma reaction an insulation film constituted by Si, O, H, and optionally N on the irregular surface of the substrate including the concave portions at a deposition rate of 100 nm/mm or less.