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Nanomaterials 2017, 7(1), 13; doi:10.3390/nano7010013

Parametrically Optimized Carbon Nanotube-Coated Cold Cathode Spindt Arrays

1
School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
2
Electrical Engineering Division, Department of Engineering, University of Cambridge, Cambridge CB3 0FA, UK
3
State Key Laboratory Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou 510275, China
*
Author to whom correspondence should be addressed.
Academic Editors: Xianqiao Wang and Tienchong Chang
Received: 17 December 2016 / Revised: 4 January 2017 / Accepted: 6 January 2017 / Published: 12 January 2017
(This article belongs to the Special Issue Computational Modeling and Simulations of Carbon Nanomaterials)
View Full-Text   |   Download PDF [1864 KB, uploaded 12 January 2017]   |  

Abstract

Here, we investigate, through parametrically optimized macroscale simulations, the field electron emission from arrays of carbon nanotube (CNT)-coated Spindts towards the development of an emerging class of novel vacuum electron devices. The present study builds on empirical data gleaned from our recent experimental findings on the room temperature electron emission from large area CNT electron sources. We determine the field emission current of the present microstructures directly using particle in cell (PIC) software and present a new CNT cold cathode array variant which has been geometrically optimized to provide maximal emission current density, with current densities of up to 11.5 A/cm2 at low operational electric fields of 5.0 V/μm. View Full-Text
Keywords: carbon nanotube; cold cathode; field emission; electron gun carbon nanotube; cold cathode; field emission; electron gun
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Yuan, X.; Cole, M.T.; Zhang, Y.; Wu, J.; Milne, W.I.; Yan, Y. Parametrically Optimized Carbon Nanotube-Coated Cold Cathode Spindt Arrays. Nanomaterials 2017, 7, 13.

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