Electrical conductance and breakdown in individual CNx multiwalled nanotubes

被引：34

作者：

Burch, Hilary J.

Davies, Julia A.

Brown, Elisabetta

Hao, Ling

Contera, Sonia Antoranz

Grobert, Nicole

Ryan, J. F.

机构：

[1] Natl Phys Lab, Teddington TW11 0LW, Middx, England

[2] Univ Oxford, Oxford OX1 3PU, England

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 14期

基金：

英国医学研究理事会; 英国工程与自然科学研究理事会; 英国生物技术与生命科学研究理事会;

关键词：

D O I：

10.1063/1.2358308

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Doping of carbon nanotubes with nitrogen during growth strongly modifies their electronic structure through n-type doping. This provides the possibility of producing nanotubes with high conductances, independent of tube chirality. To date, electrical measurements on individual nitrogen-doped multiwalled nanotubes (CNxMWNTs) have reported surprisingly low conductances (similar to 0.01G(0)). Here the authors present high conductance (1.0 +/- 0.3G(0)) measurements at low bias for individual CNx MWNTs. Conductance increases linearly with voltage at a rate of 0.7 +/- 0.2G(0)/V until the threshold for electrical breakdown is reached. Discrete current steps of 20 +/- 10 mu A are then observed. (c) 2006 American Institute of Physics.

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页数：3

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