Structure-dependent electrical properties of carbon nanotube fibers

Qingwen Li; Yuan Li; Xiefei Zhang; Satishkumar B. Chikkannanavar; Yonghao Zhao; Andrea M. Dangelewicz; Lianxi Zheng; Stephen K. Doorn; Quanxi Jia; Dean E. Peterson; Paul N. Arendt; Yuntian Zhu

doi:10.1002/adma.200602966

Structure-dependent electrical properties of carbon nanotube fibers

Qingwen Li, Yuan Li, Xiefei Zhang, Satishkumar B. Chikkannanavar, Yonghao Zhao, Andrea M. Dangelewicz, Lianxi Zheng, Stephen K. Doorn, Quanxi Jia, Dean E. Peterson, Paul N. Arendt, Yuntian Zhu

Mechanical & Nuclear Engineering

Los Alamos National Laboratory

Research output: Contribution to journal › Article › peer-review

426 Scopus citations

Abstract

The electron transport properties of neat, well-aligned carbon nanotubes (CNT) fibers spun from arrays of millimeter-long CNTs were reported. The electric resistance of CNT fibers at temperatures from 300 K to 75.4 K investigated the electronic properties of as-spun fibers and their possible conducting mechanisms. The results show that CNTs align well in the spun fibers and have good CNT alignment and high purity. The longer CNTs have lower contact resistance as they have fewer end connections and larger contact area between neighboring tubes. The two-terminal current-voltage (I-V) characteristics of a spun CNT fiber indicate a linear nature of the I-V curves, which reveals good ohmic contacts between the CNT fibers and the electrodes. The dependence of conductivity of CNT fibers on their structures is due to the variation in carrier density and π-bonding system of CNTs caused by different chemical treatments.

Original language	British English
Pages (from-to)	3358-3363
Number of pages	6
Journal	Advanced Materials
Volume	19
Issue number	20
DOIs	https://doi.org/10.1002/adma.200602966
State	Published - 19 Oct 2007

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title = "Structure-dependent electrical properties of carbon nanotube fibers",

abstract = "The electron transport properties of neat, well-aligned carbon nanotubes (CNT) fibers spun from arrays of millimeter-long CNTs were reported. The electric resistance of CNT fibers at temperatures from 300 K to 75.4 K investigated the electronic properties of as-spun fibers and their possible conducting mechanisms. The results show that CNTs align well in the spun fibers and have good CNT alignment and high purity. The longer CNTs have lower contact resistance as they have fewer end connections and larger contact area between neighboring tubes. The two-terminal current-voltage (I-V) characteristics of a spun CNT fiber indicate a linear nature of the I-V curves, which reveals good ohmic contacts between the CNT fibers and the electrodes. The dependence of conductivity of CNT fibers on their structures is due to the variation in carrier density and π-bonding system of CNTs caused by different chemical treatments.",

author = "Qingwen Li and Yuan Li and Xiefei Zhang and Chikkannanavar, {Satishkumar B.} and Yonghao Zhao and Dangelewicz, {Andrea M.} and Lianxi Zheng and Doorn, {Stephen K.} and Quanxi Jia and Peterson, {Dean E.} and Arendt, {Paul N.} and Yuntian Zhu",

year = "2007",

month = oct,

day = "19",

doi = "10.1002/adma.200602966",

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volume = "19",

pages = "3358--3363",

journal = "Advanced Materials",

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TY - JOUR

T1 - Structure-dependent electrical properties of carbon nanotube fibers

AU - Li, Qingwen

AU - Li, Yuan

AU - Zhang, Xiefei

AU - Chikkannanavar, Satishkumar B.

AU - Zhao, Yonghao

AU - Dangelewicz, Andrea M.

AU - Zheng, Lianxi

AU - Doorn, Stephen K.

AU - Jia, Quanxi

AU - Peterson, Dean E.

AU - Arendt, Paul N.

AU - Zhu, Yuntian

PY - 2007/10/19

Y1 - 2007/10/19

N2 - The electron transport properties of neat, well-aligned carbon nanotubes (CNT) fibers spun from arrays of millimeter-long CNTs were reported. The electric resistance of CNT fibers at temperatures from 300 K to 75.4 K investigated the electronic properties of as-spun fibers and their possible conducting mechanisms. The results show that CNTs align well in the spun fibers and have good CNT alignment and high purity. The longer CNTs have lower contact resistance as they have fewer end connections and larger contact area between neighboring tubes. The two-terminal current-voltage (I-V) characteristics of a spun CNT fiber indicate a linear nature of the I-V curves, which reveals good ohmic contacts between the CNT fibers and the electrodes. The dependence of conductivity of CNT fibers on their structures is due to the variation in carrier density and π-bonding system of CNTs caused by different chemical treatments.

AB - The electron transport properties of neat, well-aligned carbon nanotubes (CNT) fibers spun from arrays of millimeter-long CNTs were reported. The electric resistance of CNT fibers at temperatures from 300 K to 75.4 K investigated the electronic properties of as-spun fibers and their possible conducting mechanisms. The results show that CNTs align well in the spun fibers and have good CNT alignment and high purity. The longer CNTs have lower contact resistance as they have fewer end connections and larger contact area between neighboring tubes. The two-terminal current-voltage (I-V) characteristics of a spun CNT fiber indicate a linear nature of the I-V curves, which reveals good ohmic contacts between the CNT fibers and the electrodes. The dependence of conductivity of CNT fibers on their structures is due to the variation in carrier density and π-bonding system of CNTs caused by different chemical treatments.

UR - http://www.scopus.com/inward/record.url?scp=35748930868&partnerID=8YFLogxK

U2 - 10.1002/adma.200602966

DO - 10.1002/adma.200602966

M3 - Article

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SN - 0935-9648

VL - 19

SP - 3358

EP - 3363

JO - Advanced Materials

JF - Advanced Materials

IS - 20

ER -

Structure-dependent electrical properties of carbon nanotube fibers

Abstract

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