Patent ID: 7910484
Filing Date: 2011-03-22
Classification: C23C,H01L

Abstract:
1. A method, comprising: (a) providing a circular substrate having parallel top surface and bottom surfaces, an edge, a top beveled surface between said top surface and said edge and a bottom-beveled surface between said bottom surface and said edge; after (a), (b) simultaneously forming using a first plasma enhanced chemical vapor deposition process (i) a first dielectric layer of nitrogen doped silicon carbide or nitrogen doped hydrogenated silicon carbide on said top surface, said top beveled surface, and said edge of said substrate and (ii) a carbon-rich layer on said bottom beveled surface that includes a material that is not nitrogen doped silicon carbide or nitrogen doped hydrogenated silicon carbide, said material derived from a precursor used to form said first dielectric layer; after (b), (c) treating said carbon-rich layer; and after (c), (d) forming a second dielectric layer of tetraethoxysilane silicon oxide or fluorinated tetraethoxysilane silicon oxide using a second plasma enhanced chemical vapor deposition process on said first dielectric layer.