Enhanced high-temperature thermoelectric properties of Ce- and Dy-doped ZnO for power generation

K. Park, H.K. Hwang, J.W. Seo and W.-S. Seo

Energy, 2013, vol. 54, issue C, 139-145

Abstract: The incorporation of CeO2 and Dy2O3 to ZnO leads to a marked increase in the electrical conductivity. The absolute values of the Seebeck coefficients of Zn1−xCexO and Zn1−xDyxO increase with CeO2 and Dy2O3 contents up to x = 0.003 and 0.005, respectively, and then decrease with further increases of their concentrations. The highest power factor (4.46 × 10−4 Wm−1 K−2 at 800 °C) is attained for Zn0.995Dy0.005O. The power factor is approximately 56 times larger than that of ZnO (0.08 × 10−4 Wm−1 K−2 at 800 °C). The introduction of a small amount of Dy2O3 is highly effective for improving the thermoelectric properties of ZnO.

Keywords: ZnO; Thermoelectric materials; Sintering; Electrical properties; Ceramics (search for similar items in EconPapers)
Date: 2013
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Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:54:y:2013:i:c:p:139-145

DOI: 10.1016/j.energy.2013.03.023

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