Title:
Method And Apparatus For Low Energy Electron Enhanced Etching Of Substrates In An Ac Or Dc Plasma Environment
Method And Apparatus For Low Energy Electron Enhanced Etching Of Substrates In An Ac Or Dc Plasma Environment
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Abstract
An apparatus for low-damage, anisotropic etching of substrates having the substrate mounted upon a mechanical support located within an ac or dc plasma reactor. The mechanical support is independent of the plasma reactor generating apparatus and capable of being electrically biased. The substrate is subjected to plasma of low-energy electrons and a species reactive with the substrate. An additional structure capable of being electrically biased can be placed within the plasma to control further the extraction or retardation of particles from the plasma.
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2/8/2005
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Patent