Patent ID: 9659792
Date: 2017-05-23
CPC Classifications: C23C,H01J,H01L

Claim:
1. A method of removing contaminants on a substrate having an exposed silicon oxide region and an exposed non-oxide region, the method comprising: flowing a fluorine-containing precursor into a remote plasma region of a substrate processing chamber fluidly coupled with a substrate processing region of the substrate processing chamber while forming a plasma in the remote plasma region to produce fluorine-containing plasma effluents; etching the exposed non-oxide region utilizing the plasma effluents, wherein fluorine species comprising a portion of the fluorine-containing plasma effluents are incorporated with the silicon oxide region; flowing a first treatment precursor into the remote plasma region of a substrate processing chamber to produce treatment plasma effluents, wherein the treatment precursor comprises a precursor selected from the group consisting of nitrogen, helium, argon, and xenon; flowing at least one additional treatment precursor into the substrate processing region, wherein the at least one additional treatment precursor comprises hydrogen (H exposing the silicon oxide region to a combination of the treatment precursors including treatment plasma effluents to remove residual fluorine species from the silicon oxide region.