Chalcogenide Glasses as Prospective Thermoelectric Materials View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2011-05

AUTHORS

A. P. Gonçalves, G. Delaizir, E. B. Lopes, L. M. Ferreira, O. Rouleau, C. Godart

ABSTRACT

Despite the fact that glasses have interesting characteristics for thermoelectric (TE) applications, their potential as TE materials has only recently been tested. In a recent article, we focused on glasses based on the Ge20Te80 composition, which has a high Seebeck coefficient, S, showing that in Cux+yGe20−xTe80−y the power factor, S2/ρ (where ρ is the resistivity), strongly improves with increasing Cu concentration. Herein we report on the preparation of glasses in the Cu-Te-As system and their characterization by x-ray diffraction (XRD), differential scanning calorimetry (DSC), and measurements of ρ and S. Our preliminary results show that the melt-spinning technique allows us to extend the Cu-Te-As glassy domain and leads to Tg values that permit use of these glasses in applications up to 100°C. A maximum S2/ρ value of ∼100 μW K−2 m−1 was obtained for the Cu30As15Te55 composition, confirming the potential of these glasses for TE applications. More... »

PAGES

1015-1017

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s11664-010-1486-8

DOI

http://dx.doi.org/10.1007/s11664-010-1486-8

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1019386101


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