Patent ID: 6812146
Filing Date: 2004-11-02
Classification: C23C

Abstract:
A chemical vapor deposition method comprising:placing a substrate in a chemical vapor deposition chamber to be maintained at a subatmospheric pressure level; premixing a tertiary-butyltris-dimethylamido-titanium compound and a nitrogen-containing gas in a premixing chamber, said nitrogen-containing gas including other gases; admitting said premixed tertiary-butyltris-dimethylamido-titanium compound and nitrogen-containing gas into said chemical vapor deposition chamber; providing a plasma generation system for forming a plasma: forming a plasma in said chemical vapor deposition chamber when maintained at a subatmospheric pressure level, said plasma comprising said tertiary-butyltris-dimethylamido-titanium compound and said nitrogen-containing gas; heating said substrate to a temperature ranging from about 350Â° C. to about 700Â° C. for subjecting said substrate to said plasma; and depositing a predominantly titanium nitride film on a portion of said substrate, said predominantly titanium nitride film having less than about 5% carbon impurities by weight and a sheet resistance of approximately 1 to 10 ohms per square.