Field emission properties of carbon nanotubes grown on Co/TiN coated Ta substrate for cathode in microwave power amplifier

被引：32
作者：
Han, JH
Lee, TY
Kim, DY
Yoo, JB
Park, CY
Choi, JJ
Jung, T
Han, IT
Kim, JM
机构：
[1] Sungkyunkwan Univ, Ctr Nanotubes & Nanostruct Composites, Suwon 440746, South Korea
[2] Gwangwoon Univ, Sch Elect Engn, Seoul 139701, South Korea
[3] Samsung Adv Inst Technol, Mat & Devices Lab, Suwon 440600, South Korea
来源：
DIAMOND AND RELATED MATERIALS | 2004年 / 13卷 / 4-8期
关键词：
carbon nanotube; high emission current; Ta; TiN;
D O I：
10.1016/j.diamond.2003.11.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
For field emitters as a cathode of traveling wave tube-microwave power amplifiers (TWT-MPA), field-emission (FE) properties of in situ grown carbon nanotubes (CNTs) onto electrically conducting substrate were systematically characterized. CNTs grown on the Co/TiN coated Ta substrate with properly controlled process exhibited the best FE property. The maximum current density and corresponding total emission current were 3.5 mA/cm(2) and similar to 1.7 mA at 21.6 V/mum, respectively. Details on the correlation between the FE properties and the morphological parameters will be discussed. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：987 / 993
页数：7
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