Electron field emission from nanocarbons: A two-process model

We show that the conventional consideration of the electron-field emission from nanocarbons cannot explain the experimentally observed results. We suggest a mechanism of the field emission occurrence from nanocarbons that can solve the existing puzzles. This mechanism implies two successive processe...

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Veröffentlicht in:Applied physics letters 2004-02, Vol.84 (7), p.1126-1128
Hauptverfasser: Altman, Igor S., Pikhitsa, Peter V., Choi, Mansoo
Format: Artikel
Sprache:eng
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Zusammenfassung:We show that the conventional consideration of the electron-field emission from nanocarbons cannot explain the experimentally observed results. We suggest a mechanism of the field emission occurrence from nanocarbons that can solve the existing puzzles. This mechanism implies two successive processes: (1) Tunneling through the low-energy barrier from the metallic region into the semiconducting region under the external macroscopic electric field and (2) tunneling through the high-energy barrier from the semiconducting region into a vacuum under the Coulomb field of an additional electron appearing in the first process.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1647284