Fabrication of large current density carbon nanotube based field emitters

被引：0

作者：

Chen, Ze-Xiang ^{[1
]}

Cao, Gui-Chuan ^{[1
]}

Zhang, Qiang ^{[1
]}

Zhu, Bing-Jin ^{[1
]}

Lin, Zu-Lun ^{[1
]}

机构：

[1] School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China

来源：

Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | 2006年 / 18卷 / 12期

关键词：

Carbon nanotubes - Chemical vapor deposition - Current density - Particle accelerators;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A synthesis of carbon nanotubes (CNT) for field emission was grown speedly and vertically by microwave plasma chemical vapor deposition with a multi-layered stack as the catalyst lay. The SEM and TEM analysis results of the CNT samples showed that as-grown CNT were typical multi-layered ones with few defects, aligned and straight, and uniform in diameter and length. The growth rate of CNT was more than 5 μm/min. The field emission results showed that the as-grown CNT emission array presented excellent and stable field emission with current density more than 6 A/cm2. The work function of the as-grown CNT was 4.59 eV measured by UPS and the corresponding field factor was about 1400.

引用

页码：2070 / 2073