Patent ID: 6531192
Filing Date: 2003-03-11
Classification: C23C

Abstract:
A method for forming a predominantly titanium nitride film 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; admitting said premixed gas-phase tertiary-butyltris-dimethylamido-titanium compound and nitrogen-containing gas into said chemical vapor deposition chamber; applying a plasma generation system for forming a plasma comprising said tertiary-butyltrisdimethylamido-titanium compound and said nitrogen-containing gas; heating said substrate to a temperature ranging from about 350Â° C. to about 700Â° C.; and forming 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 on a portion of said substrate.