Enhancement of field emission from hydrogen plasma processed carbon nanotubes

被引：40

作者：

Zhang, JH

Feng, T

Yu, WD

Liu, XH

Wang, X

Li, Q

机构：

[1] Chinese Acad Sci, Ion Beam Lab, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China

[2] E China Normal Univ, Dept Elect Sci & Technol, Shanghai 200062, Peoples R China

来源：

基金：

中国国家自然科学基金;

关键词：

field emission displays; carbon nanotubes; thin films;

D O I：

10.1016/j.diamond.2003.08.018

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An effective approach to improve the field emission site density and large area uniformity of carbon nanotube (CNT) films has been presented. I-V characteristics, Raman spectra, as well as surface morphology and microstructure of the CNT films before and after the hydrogen plasma process (HPP) were investigated. Results showed that after the HPP nano-nodes appeared along the tubes and the field electron emission site density increased dramatically from 10(3) to 10(6) cm(-2). A model for the formation of the nodular CNTs was proposed. We attributed this improvement to the changing of the electronic and/or geometrical structure of the local emission region in CNTs. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：54 / 59

页数：6

共 28 条

[1] Electronic structure and localized states at carbon nanotube tips [J].