Sequential tunneling model of field emission through dielectric deposits on nanotips
A model of sequential (incoherent) tunneling for the electron field emission was built up in order to explain some peculiarities of the electronic emission from relatively thick dielectric layers covering nanometer-range tips, particularly carbon nanotubes. The emission current as a function of appl...
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Veröffentlicht in: | Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures 2003-07, Vol.21 (4), p.1692-1699 |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | A model of sequential (incoherent) tunneling for the electron field emission was built up in order to explain some peculiarities of the electronic emission from relatively thick dielectric layers covering nanometer-range tips, particularly carbon nanotubes. The emission current as a function of applied voltage, dielectric layer thickness, polarizability, and temperature was computed. Various experimentally detected trends were thereby modeled, leading to the conclusion that incoherent tunneling might be a competitive mechanism for electron field emission from dielectric layers on the tips of nanometer-sized cathodes. |
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ISSN: | 0734-211X 1071-1023 1520-8567 |
DOI: | 10.1116/1.1596222 |