elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Functionally Graded and Segmented Thermoelectric Materials for Power Generation Based on (Bi<sub>2</sub>Te<sub>3</sub>)<sub>1-x-y</sub>(Sb<sub>2</sub>Te<sub>3</sub>)<sub>x</sub>(Sb<sub>2</sub>Se<sub>3</sub>)<sub>y</sub> Solid Solutions and Ternary Layered Tetradymite-like Chalcogenides

Shelimova, Lyudmila Evgenievna and Svechnikova, Tatyana Evgenievna and Konstantinov, Piotr P. and Avilov, E. S. and Kretova, M. A. and Zemskov, Viktor S. and Stiewe, Christian and Müller, Eckhard (2005) Functionally Graded and Segmented Thermoelectric Materials for Power Generation Based on (Bi<sub>2</sub>Te<sub>3</sub>)<sub>1-x-y</sub>(Sb<sub>2</sub>Te<sub>3</sub>)<sub>x</sub>(Sb<sub>2</sub>Se<sub>3</sub>)<sub>y</sub> Solid Solutions and Ternary Layered Tetradymite-like Chalcogenides. In: Proc. 3rd European Conf. Thermoelectrics, Ecole des Mines Nancy, FR, 2005, pp. 88-91. ECT 2005 - 3rd European Conf. Thermoelectrics, 2005-09-01 - 2005-09-02, Nancy (FR).

Full text not available from this repository.

Abstract

New functionally graded (FGTM) and functionally segmented (FSTM) thermoelectric (TE) materials of n- and p-type conductivity were fabricated by means of crystal growth applying a Czochralski technique. FGTM based on pseudo-ternary (Bi2Te3)1-x-y(Sb2Te3)x(Sb2Se3)y solid solutions were prepared by introducing variable concentrations of doped impurities into the seed and the melt charge. FSTM were grown by pulling the crystals from the melt corresponding to the composition of ternary layer compounds in the PbTe–Bi2Te3 and PbTe–Sb2Te3 quasi-binary systems using (Bi2Te3)1-x-y(Sb2Te3)x(Sb2Se3)y single crystals as a seed. This way, monolithic two-stage materials were prepared. The spatial distribution of the Seebeck coefficient (recording 2D Seebeck scans) has been studied on the crystals´ surfaces near the interface between the seed and the grown crystal by the Seebeck scanning micro-thermoprobe (SMP). A steep gradient of the Seebeck coefficient was discovered over a short interval near the seed–crystal interface. A quantitative analysis of the abundance distribution of the Seebeck coefficient from the SMP measurement by Gaussian fitting resulted in separate peaks corresponding to the segments in the grown FSTM. The peak width as a measure of the homogeneity may certify on the high uniformity within the corresponding segments of the Czochralski FSTMs.

Item URL in elib:https://elib.dlr.de/21348/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Functionally Graded and Segmented Thermoelectric Materials for Power Generation Based on (Bi<sub>2</sub>Te<sub>3</sub>)<sub>1-x-y</sub>(Sb<sub>2</sub>Te<sub>3</sub>)<sub>x</sub>(Sb<sub>2</sub>Se<sub>3</sub>)<sub>y</sub> Solid Solutions and Ternary Layered Tetradymite-like Chalcogenides
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Shelimova, Lyudmila EvgenievnaBaikov Institute of Metallurgy of RAS, MoscowUNSPECIFIED
Svechnikova, Tatyana EvgenievnaBaikov Institute of Metallurgy of RAS, MoscowUNSPECIFIED
Konstantinov, Piotr P.Ioffe Institut of RAS, St. Petersburg, RUUNSPECIFIED
Avilov, E. S.Baikov Institute of Metallurgy of RAS, MoscowUNSPECIFIED
Kretova, M. A.Baikov Institute of Metallurgy of RAS, MoscowUNSPECIFIED
Zemskov, Viktor S.Baikov Institute of Metallurgy of RAS, MoscowUNSPECIFIED
Stiewe, ChristianUNSPECIFIEDUNSPECIFIED
Müller, EckhardUNSPECIFIEDUNSPECIFIED
Date:2 September 2005
Journal or Publication Title:Proc. 3rd European Conf. Thermoelectrics, Ecole des Mines Nancy, FR, 2005
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 88-91
Editors:
EditorsEmail
Lenoir, BertrandUNSPECIFIED
Dauscher, AnneUNSPECIFIED
Status:Published
Keywords:thermoelectric material, thermogenerator, segmented, graded, bismuth telluride, lead chalcogenide, Czochralski growth, homogeneity, Seebeck scanning
Event Title:ECT 2005 - 3rd European Conf. Thermoelectrics
Event Location:Nancy (FR)
Event Type:international Conference
Event Dates:2005-09-01 - 2005-09-02
Organizer:INPL, Ecole des Mines Nancy, FR
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation Methods (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Structural and Functional Ceramics
Deposited By: Müller, Dr.phys. Wolf Eckhard
Deposited On:23 Jan 2006
Last Modified:27 Apr 2009 04:54

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.