Electrode and associated devices and methods
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United States of America Patent
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Issued Date -
Dec 23, 2004
app pub date -
Jun 19, 2003
filing date -
Jun 19, 2003
priority date (Note) -
Abandoned
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Abstract
This invention discloses electron field-emission cathodes with enhanced performance for vacuum and gaseous electronics and methods of fabricating these cathodes. The cathodes of the present invention comprise nanomaterials, such as carbon nanotubes, and metals or metal-containing compounds or alloys. In gas discharge devices, the present field-emission materials or cathodes work at room temperature and have much lower breakdown voltage or cathode fall (e.g.--the voltage drop between the plasma discharge region and the cathode) than conventional cathodes. The invention enables the developing of gas discharge devices with greatly enhanced energy efficiency and operating lifetime.
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