Patent ID: 9558934
Date: 2017-01-31
CPC Classifications: C23C,H01L

Claim:
1. A method of forming a multilayer dielectric film comprising: introducing a hydrogen-free precursor into a chamber of a deposition tool; introducing a first hydrogen-free reactive gas in said chamber; applying a first hydrogen-free plasma in the chamber to form a first sublayer; removing the first hydrogen-free plasma in the chamber; removing the first hydrogen-free reactive gas from the chamber; introducing a second hydrogen-free reactive gas in said chamber, different from the first hydrogen-free reactive gas; applying a second hydrogen-free plasma in the chamber to form a second sublayer; removing the second hydrogen-free plasma in the chamber; removing the second hydrogen-free gas from the chamber; and wherein applying the first hydrogen-free plasma comprises applying a TICS+nitrogen plasma and applying the second hydrogen-free plasma comprises depositing a TICS+nitrous oxide plasma.