Patent ID: 7829158
Filing Date: 2010-11-09
Classification: C23C,H01J,H01L

Abstract:
1. A method of forming a multi-layer film, comprising: disposing a substrate in a process chamber; heating the substrate; exposing the substrate to a tantalum containing precursor to adsorb at least a portion of the tantalum containing precursor on a surface of the substrate; purging the process chamber with a purge gas; exposing the substrate to a process space comprising helium and hydrogen ionized at a first radio frequency power to form a first tantalum containing layer on the surface; exposing the substrate to the tantalum containing precursor to adsorb at least a portion of the precursor on the first tantalum containing layer; purging the process chamber with the purge gas; and exposing the substrate to the process space at a second radio frequency power to form a second tantalum containing layer, wherein the first tantalum containing film has a higher nitrogen-content than the second tantalum containing film,