Fabrication and field emission properties of carbon nanotube cathodes

被引：31

作者：

Bower, C ^{[1
]}

Zhou, O ^{[1
]}

Zhu, W ^{[1
]}

Ramirez, AG ^{[1
]}

Kochanski, GP ^{[1
]}

Jin, S ^{[1
]}

机构：

[1] Univ N Carolina, Chapel Hill, NC 27599 USA

来源：

AMORPHOUS AND NANOSTRUCTURED CARBON | 2000年 / 593卷

关键词：

D O I：

10.1557/PROC-593-215

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A variety of carbon nanotube films have been fabricated and tested as cold cathodes. A spray deposition technique was developed for processing as-grown bulk nanotubes, both single-walled and multi-walled, into films of randomly oriented nanotubes. Films of randomly oriented multi-walled nanotubes were grown using thermal chemical vapor deposition, and arrays of well-aligned multi-walled nanotubes have been fabricated using a microwave plasma enhanced chemical vapor deposition technique. The emission current-voltage (I-V) characteristics of these nanotube cathodes have been measured. Both multi-walled (random and aligned) and single-walled carbon nanotubes exhibit low turn-on fields (similar to 2 V/mu m to generate 1 nA) and threshold fields (< 5 V/mu m to generate 10 mA/cm(2)). Significantly, these cathodes were capable of operation at very large current densities (> 1 A/cm(2)), making them candidates for application in a variety of vacuum microelectronic devices.

引用

页码：215 / 220

页数：6

共 20 条

[1] Field emission from single-wall carbon nanotube films [J].