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

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

Research Institute for Interdisciplinary Science

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

3 Citations (Scopus)

Abstract

The effects of Rh doping on the thermoelectric properties of Pt _1-xRh_xAs₂ (x = 0, 0.005, and 0.01) with pyrite structure were studied by conducting measurements of electrical resistivity ρ, Seebeck coefficient S, and thermal conductivity κ. The sample with x = 0.005 exhibited large S and low ρ, resulting in a maximum power factor (S 2 / ρ) of 65 μW/cmK² at 440 K. The peculiarly shaped "corrugated flat band" predicted for PtSb₂ might explain the enhanced thermoelectric properties of doped PtAs₂.

Original language	English
Article number	092107
Journal	Applied Physics Letters
Volume	103
Issue number	9
DOIs	https://doi.org/10.1063/1.4819953
Publication status	Published - Aug 26 2013

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "The effects of Rh doping on the thermoelectric properties of Pt 1-xRhxAs2 (x = 0, 0.005, and 0.01) with pyrite structure were studied by conducting measurements of electrical resistivity ρ, Seebeck coefficient S, and thermal conductivity κ. The sample with x = 0.005 exhibited large S and low ρ, resulting in a maximum power factor (S 2 / ρ) of 65 μW/cmK2 at 440 K. The peculiarly shaped {"}corrugated flat band{"} predicted for PtSb2 might explain the enhanced thermoelectric properties of doped PtAs2.",

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AU - Kudo, Kazutaka

AU - Nakano, Seiya

AU - Mizukami, Tasuku

AU - Takabatake, Toshiro

AU - Nohara, Minoru

PY - 2013/8/26

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N2 - The effects of Rh doping on the thermoelectric properties of Pt 1-xRhxAs2 (x = 0, 0.005, and 0.01) with pyrite structure were studied by conducting measurements of electrical resistivity ρ, Seebeck coefficient S, and thermal conductivity κ. The sample with x = 0.005 exhibited large S and low ρ, resulting in a maximum power factor (S 2 / ρ) of 65 μW/cmK2 at 440 K. The peculiarly shaped "corrugated flat band" predicted for PtSb2 might explain the enhanced thermoelectric properties of doped PtAs2.

AB - The effects of Rh doping on the thermoelectric properties of Pt 1-xRhxAs2 (x = 0, 0.005, and 0.01) with pyrite structure were studied by conducting measurements of electrical resistivity ρ, Seebeck coefficient S, and thermal conductivity κ. The sample with x = 0.005 exhibited large S and low ρ, resulting in a maximum power factor (S 2 / ρ) of 65 μW/cmK2 at 440 K. The peculiarly shaped "corrugated flat band" predicted for PtSb2 might explain the enhanced thermoelectric properties of doped PtAs2.

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