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Measurement setup fpr simultaneous determination of electrical conductivity, Hall coefficient and Seebeck coefficient

Kolb, Hendrik and de Boor , Johannes and Sesselmann, Andreas J. and Dasgupta, Titas and Karpinski, Gabriele and Müller, Eckhard (2013) Measurement setup fpr simultaneous determination of electrical conductivity, Hall coefficient and Seebeck coefficient. DPG Frühjahrstagung 2013, 10.03.2013-15.03.2013, Regensburg, Deutschland.

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Abstract

Thermoelectric materials can convert heat directly into usable electrical energy. An important aim in thermoelectric research is to find and optimize suitable materials and improve their performance to get higher efficiency. For a complete characterization it is in general required to do several different measurements in different apparatuses which can be challenging and time consuming. Therefore we developed a measurement system that can measure three of the thermoelectric key quantities (electrical conductivity, Seebeck- and Hall coefficient) simultaneously from room temperature up to 1000K, which is a typical temperature region for many potential applications of these materials. All three quantities are coupled via the charge carrier concentration and therefore a simultaneous measurement is important for a deep insight in the charge carrier transport in the sample. This is particularly important for thermally instable materials, where consecutive measurements can easily lead to misinterpretations. Four sheathed thermocouples arranged in a van der Pauw geometry are pressed by small springs on a round sample for electrical contact. This special arrangement allows for the electrical measurements, while the thermocouples allow for a determination of the Seebeck coefficient if an additional temperature gradient is applied. We will discuss technical details, features and limitations of the setup.

Item URL in elib:https://elib.dlr.de/86001/
Document Type:Conference or Workshop Item (Poster)
Title:Measurement setup fpr simultaneous determination of electrical conductivity, Hall coefficient and Seebeck coefficient
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kolb, HendrikGerman Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
de Boor , JohannesGerman Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
Sesselmann, Andreas J.German Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
Dasgupta, TitasGerman Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
Karpinski, GabrieleGerman Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
Müller, EckhardGerman Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
Date:11 March 2013
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:simultaneous measurement, Hall and Seebeck coefficient
Event Title:DPG Frühjahrstagung 2013
Event Location:Regensburg, Deutschland
Event Type:national Conference
Event Dates:10.03.2013-15.03.2013
Organizer:Deutsche Physikalische Gesellschaft
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Project Fahrzeugenergiesysteme III (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Thermoelectric Materials and Systems
Deposited By: Zabrocki, Dr. Knud
Deposited On:29 Nov 2013 09:29
Last Modified:08 May 2014 23:26

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