Field emission from aligned carbon nanotubes prepared by thermal chemical vapor deposition of Fe-phthalocyanine

被引：47

作者：

Araki, H ^{[1
]}

Katayama, T ^{[1
]}

Yoshino, K ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Dept Elect Engn, Suita, Osaka 5650871, Japan

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 16期

关键词：

D O I：

10.1063/1.1410874

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The field emission from aligned multiwalled carbon nanotubes prepared by thermal chemical vapor deposition of Fe-phthalocyanine is reported, with emphasis on the current-voltage characteristics and current fluctuation. By running of a pristine emitter at high current and/or voltage for a long time, the onset voltage is lowered from 400 to 125 V and the field-enhancement factor increases from 360 to 1110, demonstrating geometrical reconstruction of the nanotube apex. Deviation from the Fowler-Nordheim relation is caused at a constant local electric field of similar to 4x10(3) V/mum and is related to high-field conditioning. Electron emission current under a high current density condition (> 10 mA/cm2) is stable and noiseless. The reason for current noise in the lower current density is discussed. (C) 2001 American Institute of Physics.

引用

页码：2636 / 2638

页数：3

共 18 条

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