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
Hauptverfasser: Filip, V., Nicolaescu, D., Tanemura, M., Okuyama, F.
Format: Artikel
Sprache:eng
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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.
ISSN:0734-211X
1071-1023
1520-8567
DOI:10.1116/1.1596222