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

被引：21

作者：

Ferrer, D

Tanii, T

Matsuya, I

Zhong, G

Okamoto, S

Kawarada, H

Shinada, T

Ohdomari, I

机构：

[1] Waseda Univ, Fac Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan

[2] Waseda Univ, Consolidated Res Inst Adv Sci & Med Care, ASMeW, Shinjuku Ku, Tokyo 1620041, Japan

[3] Waseda Univ, Kagami Mem Lab Mat Sci & Technol, Shinjuku Ku, Tokyo 1690051, Japan

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 03期

关键词：

D O I：

10.1063/1.2165205

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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 degrees 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. (c) 2006 American Institute of Physics.

引用

页码：1 / 3

页数：3