Patent ID: 7884034
Filing Date: 2011-02-08
Classification: C23C,H01L

Abstract:
1. A method of manufacturing a semiconductor device, the method comprising forming a silicon nitride film on a substrate in a process chamber using a dichlorosilane and an ammonia, wherein forming the silicon nitride film comprises repeating a cycle to form a silicon nitride film comprising stoichiometrically excessive silicon with respect to nitrogen, the cycle comprising: (a) forming a silicon film comprising several or less atomic layers on the substrate in the process chamber by supplying the dichlorosilane to the substrate under a condition where a CVD reaction is caused; (b) removing the dichlorosilane remaining in the process chamber; (c) thermally nitriding the silicon film by supplying the ammonia to the substrate in the process chamber and causing a nitriding reaction of the silicon film in a non-plasma atmosphere under a condition where the nitriding reaction of the silicon film by the ammonia is not saturated; and (d) removing the ammonia remaining in the process chamber.