Field emission property of N-doped aligned carbon nanotubes grown by pyrolysis of monoethanolamine

被引：18

作者：

Ghosh, Pradip ^{[1
]}

Tanemura, M. ^{[1
]}

Soga, T. ^{[1
]}

Zamri, M. ^{[1
]}

Jimbo, T. ^{[1
]}

机构：

[1] Nagoya Inst Technol, Grad Sch Engn, Dept Environm Technol & Urban Planning, Showa Ku, Nagoya, Aichi 4668555, Japan

来源：

SOLID STATE COMMUNICATIONS | 2008年 / 147卷 / 1-2期

关键词：

nanostructures; carbon nanotubes; chemical vapor deposition; field electron emission;

D O I：

10.1016/j.ssc.2008.04.030

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Densely distributed bamboo-shaped nitrogen-doped aligned carbon nanotubes, grown on silicon substrate by thermal decomposition of monoethanolamine/ferrocene mixtures at 900 degrees C, were investigated for field electron emission. The morphology and crystallinity of the as-grown carbon nanotubes were characterized by SEM, TEM and Raman spectroscopy. X-ray photoelectron spectroscopy was used to analyze the nitrogen concentration on carbon nanotubes and it was observed that nitrogen concentration on nanotubes was 6.6 at.%. Field emission study of as-grown nitrogen-doped carbon nanotubes suggests that they are good emitters with a turn-on and threshold field of 1.8 V/mu m and 2.53 V/mu m, respectively. The maximum Current density was observed to be 6 mA/cm(2) at 3V/mu m. It is considered that the nice field emission performance of CNx nanotube is due to the presence of lone pairs of electrons on nitrogen atom that supplies more electrons to the conduction band. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：15 / 19

页数：5

共 23 条

[1] Electron side-emission from corrugated CNx nanotubes [J].