High conductivity carbon nanotube wires from radial densification and ionic doping

被引：94

作者：

Alvarenga, Jack ^{[1
]}

Jarosz, Paul R. ^{[1
]}

Schauerman, Chris M. ^{[1
]}

Moses, Brian T. ^{[1
]}

Landi, Brian J. ^{[1
]}

Cress, Cory D. ^{[2
]}

Raffaelle, Ryne P. ^{[3
]}

机构：

[1] Rochester Inst Technol, NanoPower Res Labs, Rochester, NY 14623 USA

[2] USN, Res Lab, Washington, DC 20375 USA

[3] Natl Renewable Energy Lab, Golden, CO 80401 USA

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 18期

关键词：

CHEMICAL TREATMENT; FIBERS; TRANSPORT; NETWORKS;

D O I：

10.1063/1.3506703

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Application of drawing dies to radially densify sheets of carbon nanotubes (CNTs) into bulk wires has shown the ability to control electrical conductivity and wire density. Simultaneous use of KAuBr(4) doping solution, during wire drawing, has led to an electrical conductivity in the CNT wire of 1.3 x10(6) S/m. Temperature-dependent electrical measurements show that conduction is dominated by fluctuation-assisted tunneling, and introduction of KAuBr(4) significantly reduces the tunneling barrier between individual nanotubes. Ultimately, the concomitant doping and densification process leads to closer packed CNTs and a reduced charge transfer barrier, resulting in enhanced bulk electrical conductivity. (c) 2010 American Institute of Physics. [doi:10.1063/1.3506703]

引用

页数：3

共 21 条

[1] Reversibility, dopant desorption, and tunneling in the temperature-dependent conductivity of type-separated, conductive carbon nanotube networks [J].