Energy band structure effect of individual single-walled carbon nanotubes on field emission characteristics

被引：11

作者：

Liu, XH ^{[1
]}

Zhu, CC

Li, YK

机构：

[1] Xian Jiaotong Univ, Sch Elect & Informat Engn, Inst VME & MEMS, Xian 710049, Peoples R China

[2] Liaoning Univ, Dept Phys, Shenyang 110036, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 2004年 / 344卷 / 1-4期

基金：

中国国家自然科学基金;

关键词：

carbon nanotubes; field emission; dispersion relation; tunneling theory;

D O I：

10.1016/j.physb.2003.09.265

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The chirality effect of individual single-walled carbon nanotube (SWCNT) on field emission characteristics is studied by using the dispersion relation of SWCNT derived from tight binding approximation. The characteristic of emission current versus applied electric field is investigated and the band structure influence on emission current is also analyzed. The results of numerical simulation indicate that the emission current increases with increasing applied electric field. For the same applied electric field and similar tube radius, the emission current increases in sequence with zigzag (semiconducting), chiral tube (semiconducting), chiral tube (metallic), armchair and zigzag (metallic). (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：243 / 248

页数：6

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