Patent ID: 6300185
Filing Date: 2001-10-09
Classification: C23C,H01L

Abstract:
A polycrystalline silicon film formation method, comprising:putting a plurality of single crystal semiconductor substrates in a reaction furnace, an oxide film being formed on a surface of each of the plurality of substrates; andforming a polycrystalline silicon film on said oxide film in said reaction furnace, said polycrystalline silicon film being formed under a film formation rate of 0.9 r.sub.av to 1.1 r.sub.av, and an internal temperature range of the reaction furnace of T.sub.av -10.degree. C. to T.sub.av +10.degree. C., where r.sub.av (nm/minute) is an average rate of forming the polycrystalline silicon film on each of the plurality of substrates, and T.sub.av.degree.C. is an average temperature of the interior of the reaction furnace,wherein after formation of said polycrystalline silicon film, an average RMS roughness of an interface between said oxide film and said polycrystalline silicon film is less than 1 nm.