INTEGRATED PROCESSING FOR MICROCONTAMINATION PREVENTION
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United States of America Patent
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Issued Date -
Mar 10, 2016
app pub date -
Sep 5, 2014
filing date -
Sep 5, 2014
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Abstract
Methods of preventing microcontamination from developing on substrates when the substrates are removed from a substrate processing system are described. During processing in the substrate processing mainframe, fluorine adatoms are present (perhaps left by a prior process in the mainframe) on the surface of the substrate. The fluorine adatoms develop into microcontamination upon exposure to typical atmospheric conditions. A hydrogen-containing precursor is flowed into a remote plasma region to form plasma effluents. The plasma effluents are flowed into a substrate processing region to remove or react with the fluorine adatoms in a treatment operation. Following the treatment operation, the concentration of fluorine on or near the surface is reduced and the development of microcontamination after breaking vacuum is curtailed.
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