Patent ID: 6423384
Filing Date: 2002-07-23
Classification: C23C,H01L

Abstract:
A method for forming an anti-reflective coating on a substrate, comprising:a) positioning the substrate in a high density plasma chemical vapor deposition chamber; b) introducing a processing gas comprising a hydrocarbon gas and a carrier gas into the chamber, wherein the hydrocarbon gas is selected from the group consisting of alkene hydrocarbons, alkane hydrocarbons, alkyne hydrocarbons, and combinations thereof; c) generating a high density plasma of the processing gas; d) depositing an amorphous carbon film on the substrate while maintaining the substrate at a temperature of about 300Â° C. to 400Â° C.; and e) annealing the amorphous carbon film after deposition, wherein the amorphous carbon film is deposited on a dielectric layer of a substrate, a photoresistive layer is applied to the amorphous carbon film, and the dielectric layer is etched to form an interconnect structure.