| CPC H01L 21/31116 (2013.01) [H01J 37/32146 (2013.01); H01L 21/0332 (2013.01); H01L 21/0337 (2013.01); H01L 21/31144 (2013.01); H01L 21/32137 (2013.01); H01J 37/32091 (2013.01); H01J 2237/334 (2013.01); H01L 21/32055 (2013.01)] | 20 Claims |

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1. A processing method comprising:
depositing a silicon-and-boron-containing material on a substrate disposed within a processing region of a semiconductor processing chamber;
etching portions of the silicon-and-boron-containing material with a chlorine-containing precursor to form one or more features in the substrate; and
removing remaining portions of the silicon-and-boron-containing material from the substrate with a fluorine-containing precursor at a rate of greater than 70 nm/min.
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