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Influence of mechanochemical syntheses and compacting methods on the thermoelectric properties of nanostructured AgSnmSbTe2+m (TAST-m)

Falkenbach, Oliver and Schmitz, Andreas and Dankwort, Torben and Koch, Guenter and Kienle, Lorenz and Müller, Eckhard and Schlecht, Sabine (2014) Influence of mechanochemical syntheses and compacting methods on the thermoelectric properties of nanostructured AgSnmSbTe2+m (TAST-m). Semiconductor Science and Technology, 29 (12), p. 124009. Institute of Physics (IOP) Publishing. DOI: 10.1088/0268-1242/29/12/124009 ISSN 0268-1242

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Abstract

Tin telluride doped with silver antimony telluride (Tin-Antimony-Silver-Tellurium, TAST-m) was prepared by two mechanochemical methods: mechanical alloying and—as an alternative synthetic route—co-ball-milling, a recently developed way of combining the procedures of mechanical alloying of single elements with the usual ball-milling of polycrystalline compounds. For the two series of products with varying degrees of doping, three different compacting techniques, cold-pressing/annealing (CPA), hot-pressing (HP) and short-term sintering (STS), were applied, and their influence on the thermoelectric properties was investigated. Although short-term sintering seemed to be the most advantageous method in most cases, the influence of the density of an individual pellet on the thermoelectric transport properties needs to be considered. A structural characterization of the different series of nanopowders obtained by the two milling methods was carried out by x-ray diffraction (XRD) and transmission electron microscopy (TEM) studies. The latter also allowed further insight into the microstructure and revealed a homogeneous distribution of silver and antimony in the tin telluride matrix.

Item URL in elib:https://elib.dlr.de/92618/
Document Type:Article
Title:Influence of mechanochemical syntheses and compacting methods on the thermoelectric properties of nanostructured AgSnmSbTe2+m (TAST-m)
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Falkenbach, OliverJustus-Liebig University, Institute for Inorganic and Analytical ChemistryUNSPECIFIED
Schmitz, AndreasGerman Aerospace Center, Institute of Materials Research, Köln, GermanyUNSPECIFIED
Dankwort, TorbenInstitute for Material Science, Christian-Albrechts-University, Kaiserstrasse 2, D-24143 Kiel, GermanyUNSPECIFIED
Koch, GuenterJustus-Liebig University, Institute for Inorganic and Analytical ChemistryUNSPECIFIED
Kienle, LorenzInstitute for Material Science, Christian-Albrechts-University, Kaiserstrasse 2, D-24143 Kiel, GermanyUNSPECIFIED
Müller, EckhardGerman Aerospace Center, Institute of Materials Research, Köln, Germany and Justus Liebig University Giessen, Institute of Inorganic and Analytical Chemistry, 35392 Giessen, GermanyUNSPECIFIED
Schlecht, SabineInstitute of Inorganic and Analytical Chemistry, Justus-Liebig-University Gießen, Heinrich-Buff-Ring 58, 35392 Gießen, GermanyUNSPECIFIED
Date:14 November 2014
Journal or Publication Title:Semiconductor Science and Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:29
DOI :10.1088/0268-1242/29/12/124009
Page Range:p. 124009
Publisher:Institute of Physics (IOP) Publishing
ISSN:0268-1242
Status:Published
Keywords:Condensed matter: electrical, magnetic and optical Semiconductors, Surfaces, interfaces and thin films, condensed matter: structural, mechanical & thermal, Thermoelectric and thermomagnetic effects
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Turbine Technologies
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Thermoelectric Materials and Systems
Deposited By: Zabrocki, Dr. Knud
Deposited On:01 Dec 2014 10:11
Last Modified:06 Sep 2019 15:17

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