Electric lamp and discharge devices – Electrode and shield structures – Cathodes containing and/or coated with electron emissive...
Patent
1985-06-10
1987-11-24
Bueker, Richard
Electric lamp and discharge devices
Electrode and shield structures
Cathodes containing and/or coated with electron emissive...
313550, C23C 1400
Patent
active
047091851
ABSTRACT:
An electron-emitting surface is provided with a material reducing the electron work function, which is obtained from a suitable reaction. The reaction mixture or the product to be decomposed, for example CsN.sub.3, is present in a surface depression of a semiconductor body, while one or more pn junctions act as a heating diode. Upon heating, cesium is released and deposited on the electron-emitting surface.
REFERENCES:
patent: 4303930 (1981-12-01), Van Gorkom
patent: 4370797 (1983-02-01), Van Gorkom
patent: 4651052 (1987-03-01), Hoeberechts
Hoeberechts Arthur M. E.
Tolner Harm
Van Gorkom Gerardus G. P.
Van Hal Henricus A. M.
Bueker Richard
Fox John C.
U.S. Philips Corporation
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