Patent ID: 6235654
Filing Date: 2001-05-22
Classification: C23C,H01L

Abstract:
A method of depositing nitride on a wafer in a plasma-enhanced chemical vapor deposition (PECVD) reactor, comprising the steps of:applying reactant gasses to the wafer including silane (SiH.sub.4) at a flow rate in a range of 190 to 270 sccm;nitrogen (N.sub.2) at a flow rate in a range of 4000 to 9000 sccm;ammonia (NH.sub.3) in a range of 30 to 100 sccm;maintaining reactor pressure of between 3 to 4.8 torr; andapplying RF power between 300 to 500 watts;wherein the deposition rate of the nitride is less than 100 .ANG./min.