Patent ID: 7494937
Filing Date: 2009-02-24
Classification: C23C,H01L

Abstract:
1. A method of depositing a strained metal silicon nitride film on a substrate in a process chamber, comprising: a) exposing the substrate to a gas pulse comprising a metal precursor; b) exposing the substrate to a gas pulse comprising a first nitrogen precursor or a gas pulse comprising the first nitrogen precursor and a second nitrogen precursor in a first ratio; c) exposing the substrate to a gas pulse comprising a silicon precursor; d) exposing the substrate to a gas pulse comprising the second precursor when step b) exposed the substrate to the first nitrogen precursor or gas pulse comprising the first and second nitrogen precursors in a second ratio different from the first ratio when step b) exposed the substrate to the first and second nitrogen precursors in the first ratio; and e) repeating steps a)-d) a predetermined number of times, wherein the first nitrogen precursor is configured to react with the metal precursor or the silicon precursor with a first reactivity characteristic, and the second nitrogen precursor is configured to react with the metal precursor or the silicon precursor with a second reactivity characteristic different than the first reactivity characteristic such that a property of the metal silicon nitride film formed on the substrate changes to provide the strained metal silicon nitride film.