• thermoelectric properties of sintered n-type and p-type tellurides

    نویسندگان :
    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 711
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     characterization of powder-metallurgically manufactured (bi x sb1−x )2(te y se1−y )3 thermoelectric 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.

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