Thermoelectric properties of sintered n-type and p-type tellurides

Juha Hassel, Jyrki Tervo (Corresponding Author)

    Research output: Contribution to journalArticleScientificpeer-review

    2 Citations (Scopus)

    Abstract

    Characterization of powder-metallurgically manufactured (Bix Sb1−x )2(Tey Se1−y )3thermoelectric materials is presented. The manufacturing methods were spark plasma sintering (SPS) and hot isostatic pressing (HIP). x-Ray diffraction (XRD) and density measurements as well as transport characterization and scanning electron microscopy were performed on the materials. It is shown that both sintering techniques yield reasonable thermoelectric characteristics for p-type (x = 0.2, y = 1) as well as n-type (x = 0.95, y = 0.95) materials. Insight into the underlying reasons such as the scattering processes limiting the characteristics is gained by fitting experimental transport data using a theoretical model. The limitations and further optimization issues of our approach in thermoelectric material preparation are discussed.
    Original languageEnglish
    Pages (from-to)1745-1750
    Number of pages5
    JournalJournal of Electronic Materials
    Volume42
    Issue number7
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed

    Keywords

    • HIP
    • SPS
    • Tellurides
    • thermoelectricity
    • transport properties

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