System and method for reducing metal oxides with hydrogen radicals
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United States of America Patent
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Jul 28, 2005
filing date -
Jan 5, 1999
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Abstract
A method of removing impurities in a film is disclosed. The method includes generating hydrogen radicals including inputting a hydrogen radical precursor material to a radical source including a plasma chamber, that is external to a processing chamber, the radical source having an outlet in fluid communication with the processing chamber and creating a plasma in the plasma chamber. The hydrogen radicals are input into the processing chamber from the outlet of the radical source. The processing chamber has a pressure of between about 1 millitorr and about 10 torr and an impurity-containing film on a target is exposed to the hydrogen radicals. A system for reducing an oxide in an exposed surface is also disclosed.
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