Enhancing high-temperature thermoelectric properties of PtAs2 by Rh doping

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.

3 pages, 2 figures

References in corpus (5)

• "Pudding mold" band drives large thermopower in Na${}_x$CoO${}_2$
• Fermi surface evolution and Luttinger theorem in Na${}_x$CoO${}_2$: a systematic photoemission study
• ARPES on Na${}_{0.6}$CoO${}_2$: Fermi surface, extended flat dispersion, and unusual band splitting
• Enhanced thermoelectric properties by Ir doping of PtSb2 with pyrite structure
• Corrugated flat band as an origin of large thermopower in hole doped PtSb${}_2$

Cited by in corpus (2)

• Theoretical expectation of large Seebeck effect in PtAs${}_2$ and PtP${}_2$
• Pressure-induced exciton formation and superconductivity in platinum-based mineral Sperrylite