Other

Boris Vadimovich Seleznev

Alexandr Tursunovich Rakhimov

Nikolai Vladislavovich Suetin

Alexandr Alexandrovich Blyablin

Vladimir Anatolievich Samorodov

Mikhail Arkadievich Timofeev

Andrei Alexandrovich Pilevsky

Anton Valerievich Kandidov

The present invention may be used in the production of highly efficient films for electron field emitters. The cold-emission cathode of the present invention comprises a substrate having a carbon film with an irregular structure applied thereon. This structure comprises carbon micro- and nano-ridges and/or micro- and nano-threads which are perpendicular to the surface of the substrate, which have a typical size of between 0.005 and 1 micron as well as a distribution density of between 0.1 and 100 &mgr;m , and which are coated with a diamond nano-film whose thickness represents a fraction of a micron. The method for producing the cathode involves sequentially depositing two carbon films. A carbon film with nano-barbs is first deposited on a substrate arranged on an anode by igniting a direct-current discharge at a density of between 0.15 and 0.5 A. This deposition is carried out in a mixture containing hydrogen and a carbon-containing additive, under a global pressure of between 50 and 300 torrs, using vapors of ethylic alcohol at a 5 to 15% concentration or vapors of methane at a 6 to 30% concentration, and at a temperature on the substrate of between 600 and 1100&deg; C. A diamond nano-film is then deposited on the graphite film thus grown.

Cold-emission film-type cathode and method for producing the same

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Moscow, Russia

Boris Vadimovich Seleznev