Simulation of field emission current uniformity of low-density freestanding CNT array

Yonghai Sun; John T.W. Yeow; David A. Jaffray

doi:10.1109/NANO.2010.5697943

Simulation of field emission current uniformity of low-density freestanding CNT array

Yonghai Sun, John T.W. Yeow, David A. Jaffray

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Scopus citations

Abstract

Field electron emission (FEE) from carbon nanotube (CNT) array has been widely studied, but improving the uniformity of emission current from a CNT emitter array remains a challenge. In this paper, the uniformity of a freestanding CNT array is simulated. Field enhancement factor (β), electrical field strength at the tip and emission current density of CNTs is calculated. A simple ballast resistor array, like the resistor layer in conventional Spindt cathodes, is utilized. The voltage drops on the resistors and the emission currents form corresponding CNTs are also calculated. Simulation results show that to achieve a reasonable total emission current, emission current from individual CNTs with ballast resistor are much lower than the current from a favorable CNT without the ballast resistor.

Original language	English (US)
Title of host publication	2010 10th IEEE Conference on Nanotechnology, NANO 2010
Pages	836-840
Number of pages	5
DOIs	https://doi.org/10.1109/NANO.2010.5697943
State	Published - 2010
Externally published	Yes
Event	2010 10th IEEE Conference on Nanotechnology, NANO 2010 - Ilsan, Gyeonggi-Do, Korea, Republic of Duration: Aug 17 2010 → Aug 20 2010

Publication series

Name	2010 10th IEEE Conference on Nanotechnology, NANO 2010

Conference

Conference	2010 10th IEEE Conference on Nanotechnology, NANO 2010
Country/Territory	Korea, Republic of
City	Ilsan, Gyeonggi-Do
Period	8/17/10 → 8/20/10

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Access to Document

10.1109/NANO.2010.5697943

Cite this

Sun, Y, Yeow, JTW & Jaffray, DA 2010, Simulation of field emission current uniformity of low-density freestanding CNT array. in 2010 10th IEEE Conference on Nanotechnology, NANO 2010., 5697943, 2010 10th IEEE Conference on Nanotechnology, NANO 2010, pp. 836-840, 2010 10th IEEE Conference on Nanotechnology, NANO 2010, Ilsan, Gyeonggi-Do, Korea, Republic of, 8/17/10. https://doi.org/10.1109/NANO.2010.5697943

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title = "Simulation of field emission current uniformity of low-density freestanding CNT array",

abstract = "Field electron emission (FEE) from carbon nanotube (CNT) array has been widely studied, but improving the uniformity of emission current from a CNT emitter array remains a challenge. In this paper, the uniformity of a freestanding CNT array is simulated. Field enhancement factor (β), electrical field strength at the tip and emission current density of CNTs is calculated. A simple ballast resistor array, like the resistor layer in conventional Spindt cathodes, is utilized. The voltage drops on the resistors and the emission currents form corresponding CNTs are also calculated. Simulation results show that to achieve a reasonable total emission current, emission current from individual CNTs with ballast resistor are much lower than the current from a favorable CNT without the ballast resistor.",

author = "Yonghai Sun and Yeow, {John T.W.} and Jaffray, {David A.}",

year = "2010",

doi = "10.1109/NANO.2010.5697943",

language = "English (US)",

isbn = "9781424470334",

series = "2010 10th IEEE Conference on Nanotechnology, NANO 2010",

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AU - Yeow, John T.W.

AU - Jaffray, David A.

PY - 2010

Y1 - 2010

N2 - Field electron emission (FEE) from carbon nanotube (CNT) array has been widely studied, but improving the uniformity of emission current from a CNT emitter array remains a challenge. In this paper, the uniformity of a freestanding CNT array is simulated. Field enhancement factor (β), electrical field strength at the tip and emission current density of CNTs is calculated. A simple ballast resistor array, like the resistor layer in conventional Spindt cathodes, is utilized. The voltage drops on the resistors and the emission currents form corresponding CNTs are also calculated. Simulation results show that to achieve a reasonable total emission current, emission current from individual CNTs with ballast resistor are much lower than the current from a favorable CNT without the ballast resistor.

AB - Field electron emission (FEE) from carbon nanotube (CNT) array has been widely studied, but improving the uniformity of emission current from a CNT emitter array remains a challenge. In this paper, the uniformity of a freestanding CNT array is simulated. Field enhancement factor (β), electrical field strength at the tip and emission current density of CNTs is calculated. A simple ballast resistor array, like the resistor layer in conventional Spindt cathodes, is utilized. The voltage drops on the resistors and the emission currents form corresponding CNTs are also calculated. Simulation results show that to achieve a reasonable total emission current, emission current from individual CNTs with ballast resistor are much lower than the current from a favorable CNT without the ballast resistor.

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Simulation of field emission current uniformity of low-density freestanding CNT array

Abstract

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