Electron emitter composition made of an electron emitting substance and an expansion material for expansion of the electron emitting substance
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United States of America Patent
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Jul 6, 2010
Grant Date -
Jul 26, 2007
app pub date -
Mar 27, 2007
filing date -
Apr 24, 2002
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Abstract
This invention provides compositions of matter that contain an electron emitting substance and an expansion material. The expansion material may, for example, be an intercalation compound. When a film is formed from the composition, expansion of the expansion material typically causes rupturing or fracturing of the film. No further treatment of the surface of the film is typically required after expansion of the expansion material to obtain good emission properties. A surface formed from such a fractured film acts as an efficient electron field emitter and thus is useful in vacuum microelectronic devices.
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