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Electrostatic remote plasma source

  • US 8,723,423 B2
  • Filed: 01/23/2012
  • Issued: 05/13/2014
  • Est. Priority Date: 01/25/2011
  • Status: Active Grant
First Claim
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1. A remote plasma source comprising:

  • a first electrode;

    a second electrode, one of the first or second electrodes at least partially surrounding the other;

    a chamber at least partially enclosed by a chamber wall and configured for coupling to a processing chamber, the chamber wall separating the first and second electrodes, and the chamber including;

    a first path for the entry of a first fluid into the chamber; and

    a second path configured to provide a second fluid to the processing chamber, wherein the second fluid includes at least a portion of disassociated fluid created from the first fluid; and

    an RF power source input configured to couple to an RF power source and provide RF power from the RF power source to the first electrode, the RF power electrostatically coupling to the second electrode so as to electrostatically sustain a plasma within at least a portion of the chamber;

    a first dielectric component separating the first electrode from the plasma, DC isolating the first electrode from the plasma, and preventing the plasma from interacting with the first electrode; and

    a second dielectric component separating the second electrode from the plasma, DC isolating the second electrode from the plasma, and preventing the plasma from interacting with the second electrode.

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