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Electrical and thermoelectric properties of single-wall carbon nanotube doped Bi2 Te3

Journal Article


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Abstract


  • The effects of single-wall carbon nanotube (SWCNT) doping in n-type Bi2Te3 bulk samples on the

    electrical and thermal transport properties have been studied. Bi2Te3 samples doped with 0–5 wt. %

    SWCNTs were fabricated using solid state reaction and investigated using x-ray diffraction,

    transmission electron microscopy, and magneto transport measurements. Results show that the

    0.5% doping results in the significant enhancement of the Seebeck coefficience to as high as

    -231.8 lV/K, giant magneto resistance of up to 110%, reduction of thermal conductivity, and

    change of sign of the Seebeck coefficient from n to p type depending on the doping level and

    temperature. The figure of merit, ZT, of the optimum SWCNT doped Bi2Te3 was increased by

    25%–40% over a wide temperature range compared to the undoped sample.

Authors


  •   Zhang, Yun (external author)
  •   Wang, Xiaolin
  •   Yeoh, Wai Kong (external author)
  •   Zeng, R (external author)
  •   Chao Zhang

Publication Date


  • 2012

Citation


  • Zhang, Y., Wang, X., Yeoh, W. K., Zeng, R. K. & Zhang, C. (2012). Electrical and thermoelectric properties of single-wall carbon nanotube doped Bi2 Te3. Applied Physics Letters, 101 (3), 031909-1-031909-4.

Scopus Eid


  • 2-s2.0-84864251237

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=8166&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/5234

Has Global Citation Frequency


Start Page


  • 031909-1

End Page


  • 031909-4

Volume


  • 101

Issue


  • 3

Place Of Publication


  • United States

Abstract


  • The effects of single-wall carbon nanotube (SWCNT) doping in n-type Bi2Te3 bulk samples on the

    electrical and thermal transport properties have been studied. Bi2Te3 samples doped with 0–5 wt. %

    SWCNTs were fabricated using solid state reaction and investigated using x-ray diffraction,

    transmission electron microscopy, and magneto transport measurements. Results show that the

    0.5% doping results in the significant enhancement of the Seebeck coefficience to as high as

    -231.8 lV/K, giant magneto resistance of up to 110%, reduction of thermal conductivity, and

    change of sign of the Seebeck coefficient from n to p type depending on the doping level and

    temperature. The figure of merit, ZT, of the optimum SWCNT doped Bi2Te3 was increased by

    25%–40% over a wide temperature range compared to the undoped sample.

Authors


  •   Zhang, Yun (external author)
  •   Wang, Xiaolin
  •   Yeoh, Wai Kong (external author)
  •   Zeng, R (external author)
  •   Chao Zhang

Publication Date


  • 2012

Citation


  • Zhang, Y., Wang, X., Yeoh, W. K., Zeng, R. K. & Zhang, C. (2012). Electrical and thermoelectric properties of single-wall carbon nanotube doped Bi2 Te3. Applied Physics Letters, 101 (3), 031909-1-031909-4.

Scopus Eid


  • 2-s2.0-84864251237

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=8166&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/5234

Has Global Citation Frequency


Start Page


  • 031909-1

End Page


  • 031909-4

Volume


  • 101

Issue


  • 3

Place Of Publication


  • United States