Effect of MgO coating on field emission of a stand-alone carbon nanotube

Lujun Pan; Yasumoto Konishi; Hiroyuki Tanaka; Supriya Chakrabarti; Shogo Hokushin; Seiji Akita; Yoshikazu Nakayama

doi:10.1116/1.2770740

Effect of MgO coating on field emission of a stand-alone carbon nanotube

Lujun Pan, Yasumoto Konishi, Hiroyuki Tanaka, Supriya Chakrabarti, Shogo Hokushin, Seiji Akita, Yoshikazu Nakayama

School of Engineering

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Field emission properties of a stand-alone MgO-coated carbon nanotube (CNT) have been investigated by a field emission microscopy. A finite element method is used to analyze the electric field distribution on the surface of a CNT and in the layer of MgO. It is found that the dielectric MgO layer decreases the strength of electric field on the CNT surface and then increases the tunnel barrier of field emission. However, it is observed that the MgO coating largely decreases the fluctuation of the emission current from a CNT especially in the current of over 10-7 A.

Original language	English
Pages (from-to)	1581-1583
Number of pages	3
Journal	Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
Volume	25
Issue number	5
DOIs	https://doi.org/10.1116/1.2770740
Publication status	Published (in print/issue) - 28 Sept 2007

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AU - Pan, Lujun

AU - Konishi, Yasumoto

AU - Tanaka, Hiroyuki

AU - Chakrabarti, Supriya

AU - Hokushin, Shogo

AU - Akita, Seiji

AU - Nakayama, Yoshikazu

PY - 2007/9/28

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AB - Field emission properties of a stand-alone MgO-coated carbon nanotube (CNT) have been investigated by a field emission microscopy. A finite element method is used to analyze the electric field distribution on the surface of a CNT and in the layer of MgO. It is found that the dielectric MgO layer decreases the strength of electric field on the CNT surface and then increases the tunnel barrier of field emission. However, it is observed that the MgO coating largely decreases the fluctuation of the emission current from a CNT especially in the current of over 10-7 A.

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Effect of MgO coating on field emission of a stand-alone carbon nanotube

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