Patent ID: 7220461
Filing Date: 2007-05-22
Classification: C23C,H01L

Abstract:
1. A method for forming a silicon oxide film simultaneously on a plurality of target substrates stacked at intervals in a vertical direction within a process field inside a reaction container, to fill a recess present at a surface of the target substrates with the silicon oxide film, the method comprising: depositing a silicon oxide film on the surface of the target substrates by thermal CVD, while setting the process field at a first temperature and a first pressure, and supplying a source gas comprising an Si-containing organic material and a first oxidizing gas into the process field; and reforming the silicon oxide film by oxygen radicals and hydroxyl group radicals within the process field, while setting the process field at a second temperature and a second pressure, wherein the depositing deposits the silicon oxide film to have a thickness such that the silicon oxide film is bent inside the recess and surfaces of adjacent portions of the silicon oxide film come into contact with each other, whereby a seam containing an organic substance produced by decomposition of the source gas is formed in the silicon oxide film within the recess, the reforming uses process conditions, including the second temperature set to be 400 to 1000° C. and the second pressure set to be 133 Pa or less, to remove the organic substance from the seam in the silicon oxide film and to make the seam disappear, and the reforming supplies a second oxidizing gas and a deoxidizing gas into the process field, and causing a combustion reaction of the deoxidizing gas with the second oxidizing gas to generate the oxygen radicals and the hydroxyl group radicals.