Enhancing high-temperature thermoelectric properties of PtAs2 by Rh doping

Kazutaka Kudo; Seiya Nakano; Tasuku Mizukami; Toshiro Takabatake; Minoru Nohara

doi:10.1063/1.4819953

Enhancing high-temperature thermoelectric properties of PtAs2 by Rh doping

Strongly Correlated Electrons 2013-09-05 v1 Materials Science

Authors: Kazutaka Kudo , Seiya Nakano , Tasuku Mizukami , Toshiro Takabatake , Minoru Nohara

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Abstract

The effects of Rh doping on the thermoelectric properties of Pt1-xRhxAs2 (x = 0, 0.005, and 0.01) with pyrite structure were studied by conducting measurements of electrical resistivity rho, Seebeck coefficient S, and thermal conductivity kappa. The sample with x = 0.005 exhibited large S and low rho, resulting in a maximum power factor (S^2/rho) of 65 muW/cmK^2 at 440 K. The peculiarly shaped "corrugated flat band" predicted for PtSb2 might explain the enhanced thermoelectric properties of doped PtAs2.

Keywords

thermoelectric properties rh doping ptas2 power factor seebeck coefficient pyrite structure

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@article{arxiv.1309.0939,
  title  = {Enhancing high-temperature thermoelectric properties of PtAs2 by Rh doping},
  author = {Kazutaka Kudo and Seiya Nakano and Tasuku Mizukami and Toshiro Takabatake and Minoru Nohara},
  journal= {arXiv preprint arXiv:1309.0939},
  year   = {2013}
}

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3 pages, 2 figures

Enhancing high-temperature thermoelectric properties of PtAs2 by Rh doping

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