Crystal growth and thermoelectric properties of tetradymite-like layered chalcogenides and (Bi2Te3)1−x−y (Sb2Te3) x (Sb2Se3) y solid solutions

Thermoelectric materials for segmented n-and p-legs of thermoelectric generators have been prepared by Czochralski growth with melt supply through a floating crucible. Two-segment ingots have been obtained using melt compositions corresponding to ternary layered compounds in the PbTe-Bi2Te3 and PbTe...

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Published in:Inorganic materials 2006-12, Vol.42 (12), p.1311-1317
Main Authors: Svechnikova, T. E., Shelimova, L. E., Konstantinov, P. P., Kretova, M. A., Avilov, E. S., Zemskov, V. S., Stiewe, C., Müller, E.
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cited_by cdi_FETCH-LOGICAL-c257t-d3a88c652d0587696e23cd444b9040fba0135a174f3884a56a017425cc3bc1503
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container_end_page 1317
container_issue 12
container_start_page 1311
container_title Inorganic materials
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creator Svechnikova, T. E.
Shelimova, L. E.
Konstantinov, P. P.
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Zemskov, V. S.
Stiewe, C.
Müller, E.
description Thermoelectric materials for segmented n-and p-legs of thermoelectric generators have been prepared by Czochralski growth with melt supply through a floating crucible. Two-segment ingots have been obtained using melt compositions corresponding to ternary layered compounds in the PbTe-Bi2Te3 and PbTe-Sb2Te3 systems, with (Bi2Te3)1-x-y (Sb2Te3) x (Sb2Se3) y solid solutions as seed materials. Seeded growth of the ternary compounds makes it possible to fabricate legs without joining segments by soldering. Using scanning hot point microprobe measurements, we have studied the thermoelectric power distribution across the seed-crystal interface. The results attest to a steep thermoelectric power gradient across the seed-crystal interface in a narrow region. Quantitative analysis of the distribution of the number of measurements with respect to thermoelectric power has revealed peaks corresponding to individual segments.
doi_str_mv 10.1134/S0020168506120065
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title Crystal growth and thermoelectric properties of tetradymite-like layered chalcogenides and (Bi2Te3)1−x−y (Sb2Te3) x (Sb2Se3) y solid solutions
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