Patent ID: 7943531

Claim:
A method of depositing a flowable silicon oxide layer on a substrate, the method comprising: providing the substrate to a deposition chamber; dissociating an ozone-containing precursor to form a mixture comprising atomic oxygen, wherein dissociating the ozone-containing precursor comprises introducing the ozone-containing precursor into a remote plasma generating chamber and striking a plasma in the remote plasma generating chamber; transferring the mixture comprising atomic oxygen from the remote plasma generating chamber into the deposition chamber; introducing a silicon-and-halogen-containing precursor to the deposition chamber, the silicon-and-halogen-containing precursor having a C:Si atom ratio of about 8 or less, the silicon-and-halogen-containing precursor and the mixture comprising atomic oxygen being first mixed in the deposition chamber; reacting the silicon-and-halogen-containing precursor and the mixture comprising atomic oxygen to form the flowable silicon oxide layer on the substrate; and annealing the flowable silicon oxide layer; wherein a molar ratio of the silicon-and-halogen-containing precursor to the mixture comprising atomic oxygen is between about 1:10 and about 100:1.