Regensburg 2013 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 24: Thermoelectric Materials

DS 24.1: Vortrag

Mittwoch, 13. März 2013, 14:45–15:00, H32

Investigations on novel thermoelectric materials using a high temperature Hall-measurement-setup — •Hans-Fridtjof Pernau, Markus Bartel, Frank Menzel, Alexandre Jacquot, Martin Jägle, and Kilian Bartholome — Fraunhofer IPM

Novel thermoelectric materials especially for medium and high temperature application are in the focus for waste heat recovering systems not only in automotive applications. Beside the accurate determination of all thermoelectric properties and thereby the ZT-value a detailed understanding of the processes inside the materials are needed. Hall-measurements are the well-known tool to investigate carrier concentration and mobility within metals, semiconductors and of course thermoelectric materials. Up to now most commercial setups are only suitable for temperatures up to 400°C. The full characterization of high temperature materials like oxides or silicides require measurement temperatures of 600°C and above. Therefore Fraunhofer IPM developed a high temperature Hall-measurement-setup which allows measurements in this range. We will present first high temperature measurements on different materials and sample geometries performed with our new IPM-HT-Hall setup.