Maximizing the electron field emission performance of carbon nanotube arrays
Smith, RC and Silva, SRP (2009) Maximizing the electron field emission performance of carbon nanotube arrays APPLIED PHYSICS LETTERS, 94 (13). ? - ?. ISSN 0003-6951
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Official URL: http://dx.doi.org/10.1063/1.3097239
The field emission screening effect is one of great importance when aiming to design efficient and powerful cathodes. It has long been assumed that the degrading effect is at a minimum when neighboring emitters are at least twice their height from each other. In this work, we show that the screening effect is underestimated and diminishes at far greater separations of five times the height of the emitter. We further observe that to achieve maximum emission efficiency in an array, one requires a trade off between screening and emitter number, resulting in a separation of three times their height.
Copyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
The following article appeared in Applied Physics Letters, 94 (13) 133104 and may be found at R. C. SMITH & S. R. P. SILVA., Appl. Phys.Lett. 94, 133104 (2009)
|Uncontrolled Keywords:||Science & Technology, Physical Sciences, Physics, Applied, Physics, carbon nanotubes, cathodes, field emission, EMITTERS, FILMS|
|Divisions:||Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre|
|Deposited By:||Melanie Hughes|
|Deposited On:||21 Nov 2012 12:22|
|Last Modified:||30 Mar 2013 14:48|
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