Patent ID: 6488995
Filing Date: 2002-12-03
Classification: C23C,H01L,Y02E,Y02P

Abstract:
A method of forming a microcrystalline silicon film with a raw gas containing at least a silicon compound by a high frequency plasma CVD method,wherein the formation of the film is conducted such that the residence time &tgr; (ms) of the raw gas in a film deposition chamber, which is defined as &tgr; (ms)=78.9Ã—VÃ—P/M in which V is a volume (cm3) of the deposition chamber, P is a deposition pressure (Torr) and M is a total flow rate (sccm) of the raw gas, satisfies &tgr;<40, and wherein a frequency of a high-frequency power source is 50 MHz or more and does not exceed 550 MHz, a temperature of a substrate is 150Â° C. or more and does not exceed 500Â° C., a deposition pressure is 0.01 Torr or more and does not exceed 0.5 Torr, and a power density of a high frequency is 0.001 W/cm3 or more and does not exceed 0.5 W/cm3.