Patent ID: 8466073

Claim:
A method of forming a silicon oxide layer on a substrate, the method comprising: forming a first layer comprising silicon, nitrogen and hydrogen by: flowing an unexcited precursor into a first remote plasma region to produce a radical-precursor, combining a carbon-free silicon-containing precursor with the radical-precursor in a first plasma-free substrate processing region, and depositing a carbon-free silicon-nitrogen-and-hydrogen-containing layer over the substrate; and forming a second layer comprising silicon and oxygen by: flowing an unexcited oxygen-containing precursor into a second remote plasma region to produce a radical-oxygen precursor, combining a silicon-and-carbon-containing precursor with the radical-oxygen precursor in a second plasma-free substrate processing region, and depositing a silicon-oxygen-and-carbon-containing capping layer over the carbon-free silicon-nitrogen-and-hydrogen-containing layer.