Electron transfer from a carbon nanotube into vacuum under high electric fields

Filip, LD, Smith, RC, Carey, JD and Silva, SRP (2009) Electron transfer from a carbon nanotube into vacuum under high electric fields JOURNAL OF PHYSICS-CONDENSED MATTER, 21 (19), ARTN 1.

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Abstract

The transfer of an electron from a carbon nanotube (CNT) tip into vacuum under a high electric field is considered beyond the usual one-dimensional semi-classical approach. A model of the potential energy outside the CNT cap is proposed in order to show the importance of the intrinsic CNT parameters such as radius, length and vacuum barrier height. This model also takes into account set-up parameters such as the shape of the anode and the anode-to-cathode distance, which are generically portable to any modelling study of electron emission from a tip emitter. Results obtained within our model compare well to experimental data. Moreover, in contrast to the usual one-dimensional Wentzel–Kramers–Brillouin description, our model retains the ability to explain non-standard features of the process of electron field emission from CNTs that arise as a result of the quantum behaviour of electrons on the surface of the CNT.

Item Type:	Article
Divisions :	Surrey research (other units)
Authors :	Filip, LD, Smith, RC, Carey, JD and Silva, SRP
Date :	13 May 2009
DOI :	10.1088/0953-8984/21/19/195302
Uncontrolled Keywords :	Science & Technology, Physical Sciences, Physics, Condensed Matter, Physics, ENERGY-DISTRIBUTIONS, EMISSION PROPERTIES, ENHANCEMENT FACTOR, POTENTIAL BARRIER, EMITTING SURFACE, TIP, DIAMOND, MODEL, MICROTUBULES, SIMULATION, carbon nanotube vacuum electronics, Fowler-Nordheim tunnelling
Related URLs :	Author
Depositing User :	Symplectic Elements
Date Deposited :	28 Mar 2017 13:43
Last Modified :	24 Jan 2020 11:57
URI:	http://epubs.surrey.ac.uk/id/eprint/745633

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