Patent ID: 6812499
Filing Date: 2004-11-02
Classification: H01L,Y02E,Y02P

Abstract:
A silicon-based film comprising a crystal phase formed on a substrate, the substrate having a surface shape represented by a function f,wherein the surface shape has a standard deviation of an inclination arctan (df/dx) from 15Â° to 55Â° within the range of a sampling length dx from 20 nm to 100 nm, wherein a Raman scattering strength resulting from an amorphous component in the silicon-based film is not more than a Raman scattering strength resulting from a crystalline component in the silicon-based film, wherein a difference between a spacing in a direction parallel to a principal surface of the substrate and a spacing of single crystal silicon is within the range of 0.2% to 1.0% with regard to the spacing of the single crystal silicon, and wherein the difference in spacing is achieved by promoting displacement of silicon atoms adhering to the substrate.