Patent ID: 6780463
Filing Date: 2004-08-24
Classification: C23C

Abstract:
A method of forming a titanium nitride thin film on a substrate disposed on a susceptor in a reaction chamber, comprising:feeding vapor of a Tetrakis Diethylamino Titanium (TDEAT) precursor and ammonia (NH3) gas into the reaction chamber, wherein a ratio of a vaporization rate of the TDEAT precursor to a flow rate of the ammonia gas is a value in the range of 1 mg/mm: 20 sccm to 1 mg/min: 100 sccm; maintaining an atmosphere in the reaction chamber at a pressure in the range of 0.5 to 3.0 Torr; heating the substrate to a temperature in the range of 300 to 400 degrees Celsius (Â° C.); and vaporizing the TDEAT precursor before the TDEAT precursor is fed into the reaction chamber, wherein the TDEAT precursor is vaporized at a vaporization rate in a range of 10 to 50 mg/min.