標題: Properties of carbon nanotubes via a thin Ti capping layer on the pretreated catalyst
作者: Lai, Rui-Ling
Shiu, Jiun-Kai
Chang, Yao-Ren
Lin, Kao-Chao
Chang, Pei-Chi
Juan, Chuan-Pin
Tai, Han-Chung
Cheng, Huang-Chung
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
公開日期: 2007
摘要: Screening effect and reliability are two of the most important issues in carbon nanotube-based field-emission devices. A thin Ti capping layer has been deposited on the hydrogen-pretreated catalytic iron nanoparticles to control the density of subsequently grown carbon nanotubes. In this way, the screening effect can be remarkably reduced due to the density of carbon nanotubes down to 10(7) from 10(9) cm(-2) as compared to the control specimens. Thus, the turn-on field can be improved to be 2.1 from 3.8 V/mu m at the emission current density of 10 mu A/cm(2). Furthermore, the electrical breakdown field can be increased to more than 7 V/mu m and the lifetime of carbon nanotubes at high electric field (10 V/mu m) can be greatly prolonged from a few seconds to more than 1 h. This can be attributed to better adhesion and lower contact resistance between the carbon nanotubes and the substrate. (c) 2007 The Electrochemical Society. All rights reserved.
URI: http://hdl.handle.net/11536/11408
http://dx.doi.org/10.1149/1.2426872
ISSN: 0013-4651
DOI: 10.1149/1.2426872
期刊: JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume: 154
Issue: 3
起始頁: J109
結束頁: J115
Appears in Collections:Articles


Files in This Item:

  1. 000243977500089.pdf