Enhancing high-temperature thermoelectric properties of PtAs2 by Rh doping

Appl. Phys. Lett. 103, 092107 (2013).

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

Department of Physics, Okayama University, Okayama 700-8530, Japan and

Advanced Low Carbon Technology Research and Development Program (ALCA), Japan Science and Technology Agency (JST), Tokyo 102-0076, Japan and

Department of Quantum Matter, ADSM, Hiroshima University, Higashi-Hiroshima 739-8530, Japan.

 

Abstract

The effects of Rh doping on the thermoelectric properties of Pt1− x Rh x As2 (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 Sand low ρ, resulting in a maximum power factor ( S2/ρ ) of 65 uW/cmK2 at 440 K. The peculiarly shaped “corrugated flat band” predicted for PtSb2 might explain the enhancedthermoelectric properties of doped PtAs2.

© 2013 AIP Publishing LLC

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Enhancing high-temperature themoelectric properties

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