Effect of length and spacing of vertically aligned carbon nanotubes on field emission properties

被引：243

作者：

Jo, SH

Tu, Y

Huang, ZP

Carnahan, DL

Wang, DZ

Ren, ZF ^{[1
]}

机构：

[1] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA

[2] Boston Coll, Dept Chem, Chestnut Hill, MA 02467 USA

[3] Nanolab Inc, Brighton, MA 02135 USA

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 20期

关键词：

D O I：

10.1063/1.1576310

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The length and the spacing of carbon nanotube (CNT) films are varied independently to investigate their effect on the field-emission characteristics of the vertically aligned CNT films grown by plasma-enhanced hot filament chemical vapor deposition using pulsed-current electrochemically deposited catalyst particles. It is shown that, in general, the macroscopic electric field E-mac,E-1, defined as the electric field when the emission current density reaches 1 mA/cm(2), can be reduced by increasing the length and the spacing of CNTs. However, for the very-high-density CNT films, the increase of length increases E-mac,E-1 slightly, whereas for the very short CNT films, the increase of spacing does not effectively reduce E-mac,E-1. (C) 2003 American Institute of Physics.

引用

页码：3520 / 3522

页数：3

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