Patent ID: 6060132
Filing Date: 2000-05-09
Classification: C23C,H01L

Abstract:
A process for preparing nitrogen containing films selected form the group consisting of silicon oxynitride and silicon nitride characterized by prevent resist contamination when used as dielectric anti-reflective coatings, using a high density plasma CVD system, comprising:providing a processing chamber holding a wafer in a vacuum of from about 0.1 mTorr to about 20 mTorr to enable O.sub.2 to be used as an oxygen source without risk of explosion in a plasma generating region of said processing chamber;introducing a gaseous mixture selected form the group consisting of SiH.sub.4 /O.sub.2 /N.sub.2 or SiH.sub.4 /O.sub.2 /N.sub.2 /Ar into the processing chamber; andsubjecting the processing chamber to RF electrical signal of sufficient frequency to create a high density plasma in the plasma generating region of said processing chamber, whereby said wager is processed by resulting high density plasma generated by said RF electrical signal.