Enhancement of field emission characteristics of tungsten emitters by single-walled carbon nanotube modification

D. Ferrer; T. Tanii; I. Matsuya; G. Zhong; S. Okamoto; H. Kawarada; T. Shinada; I. Ohdomari

doi:10.1063/1.2165205

Enhancement of field emission characteristics of tungsten emitters by single-walled carbon nanotube modification

D. Ferrer^*, T. Tanii, I. Matsuya, G. Zhong, S. Okamoto, H. Kawarada, T. Shinada, I. Ohdomari

^*Corresponding author for this work

School of Fundamental Science and Engineering

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

24 Citations (Scopus)

Abstract

We present a simple method for improving the field emission performance of tungsten-tip electron sources based on single-walled carbon nanotube (SWCNT) modification. By coating a sandwich-like thin film of Al-Fe-Al (with Fe as a catalyst) on a tungsten tip, SWCNTs were synthesized at 600°C in a chemical vapor deposition (CVD) reactor. The influence of CNT modification on the electron emission characteristics of the emitters was investigated by means of a triode structure. We have found that CNT-modified tungsten tips exhibit low threshold-voltage for electron emission, and improved emission-current stability, compared with nonmodified and Al-Fe-Al-coated needles.

Original language	English
Article number	033116
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	88
Issue number	3
DOIs	https://doi.org/10.1063/1.2165205
Publication status	Published - 2006

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2165205

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title = "Enhancement of field emission characteristics of tungsten emitters by single-walled carbon nanotube modification",

abstract = "We present a simple method for improving the field emission performance of tungsten-tip electron sources based on single-walled carbon nanotube (SWCNT) modification. By coating a sandwich-like thin film of Al-Fe-Al (with Fe as a catalyst) on a tungsten tip, SWCNTs were synthesized at 600°C in a chemical vapor deposition (CVD) reactor. The influence of CNT modification on the electron emission characteristics of the emitters was investigated by means of a triode structure. We have found that CNT-modified tungsten tips exhibit low threshold-voltage for electron emission, and improved emission-current stability, compared with nonmodified and Al-Fe-Al-coated needles.",

author = "D. Ferrer and T. Tanii and I. Matsuya and G. Zhong and S. Okamoto and H. Kawarada and T. Shinada and I. Ohdomari",

note = "Funding Information: This work was supported by a Grant-in-Aid for Young Scientists (B), by a Grant-in-Aid for Scientific Research (A), and by a Grant-in-Aid for Center of Excellence (COE) Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan.",

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T1 - Enhancement of field emission characteristics of tungsten emitters by single-walled carbon nanotube modification

AU - Ferrer, D.

AU - Tanii, T.

AU - Matsuya, I.

AU - Zhong, G.

AU - Okamoto, S.

AU - Kawarada, H.

AU - Shinada, T.

AU - Ohdomari, I.

N1 - Funding Information: This work was supported by a Grant-in-Aid for Young Scientists (B), by a Grant-in-Aid for Scientific Research (A), and by a Grant-in-Aid for Center of Excellence (COE) Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan.

PY - 2006

Y1 - 2006

N2 - We present a simple method for improving the field emission performance of tungsten-tip electron sources based on single-walled carbon nanotube (SWCNT) modification. By coating a sandwich-like thin film of Al-Fe-Al (with Fe as a catalyst) on a tungsten tip, SWCNTs were synthesized at 600°C in a chemical vapor deposition (CVD) reactor. The influence of CNT modification on the electron emission characteristics of the emitters was investigated by means of a triode structure. We have found that CNT-modified tungsten tips exhibit low threshold-voltage for electron emission, and improved emission-current stability, compared with nonmodified and Al-Fe-Al-coated needles.

AB - We present a simple method for improving the field emission performance of tungsten-tip electron sources based on single-walled carbon nanotube (SWCNT) modification. By coating a sandwich-like thin film of Al-Fe-Al (with Fe as a catalyst) on a tungsten tip, SWCNTs were synthesized at 600°C in a chemical vapor deposition (CVD) reactor. The influence of CNT modification on the electron emission characteristics of the emitters was investigated by means of a triode structure. We have found that CNT-modified tungsten tips exhibit low threshold-voltage for electron emission, and improved emission-current stability, compared with nonmodified and Al-Fe-Al-coated needles.

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Enhancement of field emission characteristics of tungsten emitters by single-walled carbon nanotube modification

Abstract

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