Low noise and stable emission from carbon nanotube electron sources

被引：43

作者：

de Jonge, N

Allioux, M

Oostveen, JT

Teo, KBK

Milne, WI

机构：

[1] Philips Res, NL-5656 AA Eindhoven, Netherlands

[2] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England

来源：

APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 13期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1063/1.2058225

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Remarkably stable and low noise field-emission electron sources have been obtained using individual carbon nanotubes. The maximum current fluctuation observed over 1 h was merely 0.5% and the emission frequency spectrum exhibited 1/f behavior over a bandwidth of 0.1-25 Hz, above which the shot-noise limit was reached. The average noise percentage was determined to be 0.08% (i.e., a signal-to-noise ratio of 1250) for seven CNT emitters operated at several current levels. The influence of the vacuum level was also investigated. (C) 2005 American Institute of Physics.

引用

页码：1 / 3

页数：3

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