Patent ID: 6287943
Filing Date: 2001-09-11
Classification: C23C,H01J,H01L,Y02E,Y02P

Abstract:
A process for producing a semiconductor layer by introducing a raw gas into a discharge chamber and supplying high-frequency power to the chamber to decompose the raw gas by discharge, thereby forming a semiconductor layer on a substrate within the discharge chamber, the process comprising the steps of:supplying high-frequency power of at least very high frequency (VHF) as the high-frequency power;supplying bias power of direct current power and/or high-frequency power of radio-frequency (RF) together with the high-frequency power of VHF to the discharge chamber; andcontrolling a direct current component of an electric current flowing into an electrode, to which the bias power is supplied, so as to fall within a range of from 0.1 A/m.sup.2 to 10 A/m.sup.2 in terms of a current density based on the area of an inner wall of the discharge chamber.