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Journal of Electronic Materials

, Volume 41, Issue 6, pp 1606–1614 | Cite as

Influence of Thermal Aging Phenomena on Thermoelectric Properties of Al-Substituted ZnO

  • Nina Vogel-Schäuble
  • Raphaël Dujardin
  • Anke WeidenkaffEmail author
  • Myriam H. Aguirre
Article

Abstract

The thermoelectric properties and stability of Al-substituted ZnO as a potential high-temperature n-type material were studied in heating–cooling cycles. Zn1−x Al x O (x = 0.02, 0.06) was prepared by soft chemistry and solid-state reaction synthesis methods. Cycling during the thermoelectric measurement leads to an increase of the electrical resistivity and Seebeck coefficient values. The reason for this aging phenomenon can be assigned to a change in composition due to oxygen uptake along with modification in the defect concentrations. The aging is enhanced if the cycling is performed in oxygen. ZT value of 0.21 is reached at 1275 K for samples with 2% Al substitution made by soft chemistry synthesis.

Keywords

Thermoelectric properties Al-substituted ZnO soft chemistry thermal cycling 

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Supplementary material

11664_2011_1851_MOESM1_ESM.docx (1.3 mb)
Supplementary material 1 (DOCX 1339 kb)

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Copyright information

© TMS 2011

Authors and Affiliations

  • Nina Vogel-Schäuble
    • 1
  • Raphaël Dujardin
    • 1
  • Anke Weidenkaff
    • 1
    Email author
  • Myriam H. Aguirre
    • 1
  1. 1.Laboratory of Solid State Chemistry and Catalysis, EmpaSwiss Federal Laboratories for Materials Science and TechnologyDuebendorfSwitzerland

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