Ordered-defect sulfides as thermoelectric materials
| Data(s) |
01/06/2014
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| Resumo |
The thermoelectric behaviour of the transition-metal disulphides n-type NiCr2S4 and p-type CuCrS2 is investigated. Materials prepared by high-temperature reaction were consolidated using cold-pressing and sintering, hot-pressing (HP) in graphite dies or spark-plasma sintering (SPS) in tungsten carbide dies. The consolidation conditions have a marked influence on the electrical transport properties. In addition to the effect on sample density, altering the consolidation conditions results in changes to the sample composition, including the formation of impurity phases. Maximum room-temperature power factors are 0.18 mW m-1 K-2 and 0.09 mW m-1 K-2 for NiCr2S4 and CuCrS2, respectively. Thermal conductivities of ca. 1.4 and 1.2 W m-1 K-1 lead to figures of merit of 0.024 and 0.023 for NiCr2S4 and CuCrS2, respectively. |
| Formato |
text |
| Identificador |
http://centaur.reading.ac.uk/37395/1/revised%20manuscript.pdf Kaltzoglou, A. <http://centaur.reading.ac.uk/view/creators/90005575.html>, Vaqueiro, P. <http://centaur.reading.ac.uk/view/creators/90005590.html>, Barbier, T., Guilmeau, E. and Powell, A. V. <http://centaur.reading.ac.uk/view/creators/90005265.html> (2014) Ordered-defect sulfides as thermoelectric materials. Journal of Electronic Materials, 43 (6). pp. 2029-2034. ISSN 1543-186x doi: 10.1007/s11664-013-2941-0 <http://dx.doi.org/10.1007/s11664-013-2941-0> |
| Idioma(s) |
en |
| Publicador |
Minerals, Metals and Materials Society |
| Relação |
http://centaur.reading.ac.uk/37395/ creatorInternal Kaltzoglou, Andreas creatorInternal Vaqueiro, Paz creatorInternal Powell, Anthony V. http://link.springer.com/article/10.1007/s11664-013-2941-0 10.1007/s11664-013-2941-0 |
| Tipo |
Article PeerReviewed |
