Electronic transport in carbon nanotube ropes and mats

A. B. Kaiser, Y. W. Park, Gyu-Tae Kim, E. S. Choi, G. Düsberg, S. Roth

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

We suggest that conduction in carbon nanotube ropes or mats is best understood in terms of a heterogeneous model, involving regions of metallic conduction together with hopping or tunnelling through small electrical barriers corresponding to defects of various types. Such a model gives a good account of the measured resistivity, in particular the crossover from nonmetallic to metallic sign for the resistivity temperature dependence seen in many samples, in analogy to our similar model for conducting polymers. In agreement with this model, the thermopower has been observed to be more metal-like than resistivity, but does show pronounced nonlinearities as a function of temperature. We investigate electron-phonon effects, density of states peaks, and semiconductor contributions as possible causes of these nonlinearities.

Original languageEnglish
Pages (from-to)2547-2550
Number of pages4
JournalSynthetic Metals
Volume103
Issue number1-3
DOIs
Publication statusPublished - 1999 Jun 24
Externally publishedYes

Fingerprint

Carbon Nanotubes
Carbon nanotubes
carbon nanotubes
electronics
electrical resistivity
nonlinearity
conduction
Thermoelectric power
Conducting polymers
conducting polymers
crossovers
Metals
Semiconductor materials
Temperature
Defects
temperature dependence
Electrons
causes
defects
metals

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Kaiser, A. B., Park, Y. W., Kim, G-T., Choi, E. S., Düsberg, G., & Roth, S. (1999). Electronic transport in carbon nanotube ropes and mats. Synthetic Metals, 103(1-3), 2547-2550. https://doi.org/10.1016/S0379-6779(98)00222-7

Electronic transport in carbon nanotube ropes and mats. / Kaiser, A. B.; Park, Y. W.; Kim, Gyu-Tae; Choi, E. S.; Düsberg, G.; Roth, S.

In: Synthetic Metals, Vol. 103, No. 1-3, 24.06.1999, p. 2547-2550.

Research output: Contribution to journalArticle

Kaiser, AB, Park, YW, Kim, G-T, Choi, ES, Düsberg, G & Roth, S 1999, 'Electronic transport in carbon nanotube ropes and mats', Synthetic Metals, vol. 103, no. 1-3, pp. 2547-2550. https://doi.org/10.1016/S0379-6779(98)00222-7
Kaiser AB, Park YW, Kim G-T, Choi ES, Düsberg G, Roth S. Electronic transport in carbon nanotube ropes and mats. Synthetic Metals. 1999 Jun 24;103(1-3):2547-2550. https://doi.org/10.1016/S0379-6779(98)00222-7
Kaiser, A. B. ; Park, Y. W. ; Kim, Gyu-Tae ; Choi, E. S. ; Düsberg, G. ; Roth, S. / Electronic transport in carbon nanotube ropes and mats. In: Synthetic Metals. 1999 ; Vol. 103, No. 1-3. pp. 2547-2550.
@article{1f1090b0b20b4f2b898d8a2cd3bbe42a,
title = "Electronic transport in carbon nanotube ropes and mats",
abstract = "We suggest that conduction in carbon nanotube ropes or mats is best understood in terms of a heterogeneous model, involving regions of metallic conduction together with hopping or tunnelling through small electrical barriers corresponding to defects of various types. Such a model gives a good account of the measured resistivity, in particular the crossover from nonmetallic to metallic sign for the resistivity temperature dependence seen in many samples, in analogy to our similar model for conducting polymers. In agreement with this model, the thermopower has been observed to be more metal-like than resistivity, but does show pronounced nonlinearities as a function of temperature. We investigate electron-phonon effects, density of states peaks, and semiconductor contributions as possible causes of these nonlinearities.",
author = "Kaiser, {A. B.} and Park, {Y. W.} and Gyu-Tae Kim and Choi, {E. S.} and G. D{\"u}sberg and S. Roth",
year = "1999",
month = "6",
day = "24",
doi = "10.1016/S0379-6779(98)00222-7",
language = "English",
volume = "103",
pages = "2547--2550",
journal = "Synthetic Metals",
issn = "0379-6779",
publisher = "Elsevier BV",
number = "1-3",

}

TY - JOUR

T1 - Electronic transport in carbon nanotube ropes and mats

AU - Kaiser, A. B.

AU - Park, Y. W.

AU - Kim, Gyu-Tae

AU - Choi, E. S.

AU - Düsberg, G.

AU - Roth, S.

PY - 1999/6/24

Y1 - 1999/6/24

N2 - We suggest that conduction in carbon nanotube ropes or mats is best understood in terms of a heterogeneous model, involving regions of metallic conduction together with hopping or tunnelling through small electrical barriers corresponding to defects of various types. Such a model gives a good account of the measured resistivity, in particular the crossover from nonmetallic to metallic sign for the resistivity temperature dependence seen in many samples, in analogy to our similar model for conducting polymers. In agreement with this model, the thermopower has been observed to be more metal-like than resistivity, but does show pronounced nonlinearities as a function of temperature. We investigate electron-phonon effects, density of states peaks, and semiconductor contributions as possible causes of these nonlinearities.

AB - We suggest that conduction in carbon nanotube ropes or mats is best understood in terms of a heterogeneous model, involving regions of metallic conduction together with hopping or tunnelling through small electrical barriers corresponding to defects of various types. Such a model gives a good account of the measured resistivity, in particular the crossover from nonmetallic to metallic sign for the resistivity temperature dependence seen in many samples, in analogy to our similar model for conducting polymers. In agreement with this model, the thermopower has been observed to be more metal-like than resistivity, but does show pronounced nonlinearities as a function of temperature. We investigate electron-phonon effects, density of states peaks, and semiconductor contributions as possible causes of these nonlinearities.

UR - http://www.scopus.com/inward/record.url?scp=0033138002&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033138002&partnerID=8YFLogxK

U2 - 10.1016/S0379-6779(98)00222-7

DO - 10.1016/S0379-6779(98)00222-7

M3 - Article

AN - SCOPUS:0033138002

VL - 103

SP - 2547

EP - 2550

JO - Synthetic Metals

JF - Synthetic Metals

SN - 0379-6779

IS - 1-3

ER -