Efficient field emission from an individual aligned carbon nanotube bundle enhanced by edge effect

被引：96
|
作者：
Fujii, Shunjiro
Honda, Shin-ichi
Machida, Hironobu
Kawai, Hideyasu
Ishida, Kazuhiro
Katayama, Mitsuhiro
Furuta, Hiroshi
Hirao, Takashi
Oura, Kenjiro
机构：
[1] Osaka Univ, Grad Sch Engn, Div Elect Elect & Informat Engn, Suita, Osaka 5650871, Japan
[2] Kochi Univ Technol, Grad Sch Engn, Dept Elect & Photon Syst Engn, Kochi 7828502, Japan
[3] Osaka Univ, Res Ctr Ultra High Voltage Elect Microscopy, Ibaraki, Osaka 5670047, Japan
来源：
APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 15期
关键词：
D O I：
10.1063/1.2721876
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The authors report on the field emission from an aligned carbon nanotube (CNT) bundle grown by thermal chemical vapor deposition. The CNT bundle showed a low-threshold electric field of 2.0 V/mu m that produced a current density of 10 mA/cm(2), sustainable evolution of current density up to 2.8 A/cm(2) at 2.9 V/mu m, and good emission stability without degradation for 200 h of continuous dc emission. By calculating the electric-field distribution, it was found that the electric field was significantly higher at the edge of the CNT bundle than at the center. The excellent field-emission properties of the aligned CNT bundle were attributed to the edge effect and the high-density structure. (c) 2007 American Institute of Physics.
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页数：3
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