Journalartikel

Jahr der Veröffentlichung: 2014

Seiten: 1674-1680

Zeitschrift: Journal of Electronic Materials

Bandnummer: 43

Heftnummer: 6

ISSN: 0361-5235

eISSN: 1543-186X

DOI Link: https://doi.org/10.1007/s11664-013-2832-4

Verlag: Electron Devices Society

Abstract: 
In this work we present a simple method to synthesize nanostructured, bismuth-doped lead telluride by co-ball-milling. The obtained nanopowders were compacted via either a cold pressing/annealing approach or by hot pressing. The two compacting methods were compared regarding sample density. Series with bismuth content up to 6 at.% were characterized by measuring the thermoelectric transport properties over a wide temperature range between 123 K and 773 K using two different techniques for the Seebeck coefficient and electrical conductivity. A decreasing thermal conductivity and increasing electrical conductivity were found with increasing doping level. The best results were obtained for samples with 5 at.% and 6 at.% bismuth, showing a maximum ZT value of 1.1 at 773 K. Transmission electron microscopy study was performed to analyze the microstructure of the nanopowders, suggesting that, in addition to n-type doping of the lead telluride matrix, segregation effects occur and the samples consist of multiple phases.

Harvard-Zitierstil: Falkenbach, O., Hartung, D., Klar, P., Koch, G. and Schlecht, S. (2014) Thermoelectric Properties of Nanostructured Bismuth-Doped Lead Telluride Bi _x (PbTe)_1-x Prepared by Co-Ball-Milling, Journal of Electronic Materials, 43(6), pp. 1674-1680. https://doi.org/10.1007/s11664-013-2832-4

APA-Zitierstil: Falkenbach, O., Hartung, D., Klar, P., Koch, G., & Schlecht, S. (2014). Thermoelectric Properties of Nanostructured Bismuth-Doped Lead Telluride Bi _x (PbTe)_1-x Prepared by Co-Ball-Milling. Journal of Electronic Materials. 43(6), 1674-1680. https://doi.org/10.1007/s11664-013-2832-4