Enhanced thermoelectric properties by Ir doping of PtSb 2 with pyrite structure

Yoshihiro Nishikubo; Seiya Nakano; Kazutaka Kudo; Minoru Nohara

doi:10.1063/1.4729789

Enhanced thermoelectric properties by Ir doping of PtSb ₂ with pyrite structure

Yoshihiro Nishikubo, Seiya Nakano, Kazutaka Kudo, Minoru Nohara

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

24 Citations (Scopus)

Abstract

The effects of Ir doping on the thermoelectric properties of Pt _1-xIr _xSb ₂ (x = 0, 0.01, 0.03, and 0.1) with pyrite structure were studied. Measurements of electrical resistivity ρ, Seebeck coefficient S, and thermal conductivity κ were conducted. The results showed an abrupt change from semiconducting behavior without Ir (x = 0) to metallic behavior at x = 0.01. The sample with x = 0.01 exhibited large S and low ρ, resulting in a maximum power factor (S ²/ρ) of 43 μW/cmK ² at 400 K. The peculiar pudding mold-type electronic band dispersion could explain the enhanced thermoelectric properties in the metallic state.

Original language	English
Article number	252104
Journal	Applied Physics Letters
Volume	100
Issue number	25
DOIs	https://doi.org/10.1063/1.4729789
Publication status	Published - Jun 18 2012
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4729789

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title = "Enhanced thermoelectric properties by Ir doping of PtSb 2 with pyrite structure",

abstract = "The effects of Ir doping on the thermoelectric properties of Pt 1-xIr xSb 2 (x = 0, 0.01, 0.03, and 0.1) with pyrite structure were studied. Measurements of electrical resistivity ρ, Seebeck coefficient S, and thermal conductivity κ were conducted. The results showed an abrupt change from semiconducting behavior without Ir (x = 0) to metallic behavior at x = 0.01. The sample with x = 0.01 exhibited large S and low ρ, resulting in a maximum power factor (S 2/ρ) of 43 μW/cmK 2 at 400 K. The peculiar pudding mold-type electronic band dispersion could explain the enhanced thermoelectric properties in the metallic state.",

author = "Yoshihiro Nishikubo and Seiya Nakano and Kazutaka Kudo and Minoru Nohara",

note = "Funding Information: Part of this work was performed at the Advanced Science Research Center, Okayama University. This work was partially supported by a Grants-in-Aid for Young Scientists (B) (23740274) from the Japan Society of the Promotion of Science (JSPS) and the Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST Program) from JSPS.",

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T1 - Enhanced thermoelectric properties by Ir doping of PtSb 2 with pyrite structure

AU - Nishikubo, Yoshihiro

AU - Nakano, Seiya

AU - Kudo, Kazutaka

AU - Nohara, Minoru

N1 - Funding Information: Part of this work was performed at the Advanced Science Research Center, Okayama University. This work was partially supported by a Grants-in-Aid for Young Scientists (B) (23740274) from the Japan Society of the Promotion of Science (JSPS) and the Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST Program) from JSPS.

PY - 2012/6/18

Y1 - 2012/6/18

N2 - The effects of Ir doping on the thermoelectric properties of Pt 1-xIr xSb 2 (x = 0, 0.01, 0.03, and 0.1) with pyrite structure were studied. Measurements of electrical resistivity ρ, Seebeck coefficient S, and thermal conductivity κ were conducted. The results showed an abrupt change from semiconducting behavior without Ir (x = 0) to metallic behavior at x = 0.01. The sample with x = 0.01 exhibited large S and low ρ, resulting in a maximum power factor (S 2/ρ) of 43 μW/cmK 2 at 400 K. The peculiar pudding mold-type electronic band dispersion could explain the enhanced thermoelectric properties in the metallic state.

AB - The effects of Ir doping on the thermoelectric properties of Pt 1-xIr xSb 2 (x = 0, 0.01, 0.03, and 0.1) with pyrite structure were studied. Measurements of electrical resistivity ρ, Seebeck coefficient S, and thermal conductivity κ were conducted. The results showed an abrupt change from semiconducting behavior without Ir (x = 0) to metallic behavior at x = 0.01. The sample with x = 0.01 exhibited large S and low ρ, resulting in a maximum power factor (S 2/ρ) of 43 μW/cmK 2 at 400 K. The peculiar pudding mold-type electronic band dispersion could explain the enhanced thermoelectric properties in the metallic state.

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Enhanced thermoelectric properties by Ir doping of PtSb ₂ with pyrite structure

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