Synthesis, characterization and low field emission of CNx nanotubes

被引：16

作者：

Ding, P ^{[1
]}

Liang, EJ

Chao, MJ

Guo, XY

Zhang, JW

机构：

[1] Zhengzhou Inst Aeronaut Ind Management, Dept Appl Sci, Zhengzhou 450015, Peoples R China

[2] Zhengzhou Univ, Minist Educ China, Key Lab Mat Phys, Sch Phys Sci & Engn, Zhengzhou 450052, Peoples R China

[3] Henan Univ, Lab Special Funct Mat, Kaifeng 475001, Peoples R China

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2005年 / 25卷 / 04期

关键词：

CNx nanotubes; pyrolyzing; bamboo-like" structure; low-field emission;

D O I：

10.1016/j.physe.2004.09.010

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Aligned CNx nanotubes were fabricated by pyrolyzing ethylenediamine on p-type Si(I 1 1) substrates using iron as the catalyst. Scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectrum (XPS) and Raman spectroscopy were used to characterize the CNx nanotubes. The CNx nanotubes with the average length of 20 mum and diameters in the range of 50-100 nm have the "bamboo-like" structure and worse crystalline order. The low-field emission measurements of the CNx nanotubes indicated that 20 muA/cm(2) current densities were observed at an electric field of 1.4 V/mum and 1.280 mA/cm(2) were obtained at 2.54 V/mum. The CNx nanotubes exhibit better field emission properties than the carbon nanotubes and the BCN nanotubes. The emission mechanism of CNx nanotubes is also discussed. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：654 / 659

页数：6

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