Patent ID: 6825134
Filing Date: 2004-11-30
Classification: C23C,H01L

Abstract:
A method for forming a film layer on a substrate in a process chamber, comprising:(a) exposing said substrate to a substantially continuous flow of a process gas composition at a constant flow rate under process conditions for a first period of time; (b) after the first period of time, pulsing a precursor into the chamber, wherein the substantially continuous flow of the process gas composition at the constant flow rate is maintained during the pulsing, and wherein said precursor does not react with said process gas under said process conditions; then (c) continuing the substantially continuous flow of the process gas composition at the constant flow rate for second period of time; (d) after the second period of time, pulsing high frequency power in the chamber to produce plasma conditions, wherein the substantially continuous flow of the process gas composition at the constant flow rate is maintained during the pulsing high frequency power, and wherein under said plasma conditions said precursor reacts with said process gas; and (e) repeating (a), (b), (c), and (d) until a desired thickness of said film layer has been achieved, wherein said film layer is silicon nitride (Si3N4), silicon oxide (SiO) or silicon dioxide (SiO2).