Synthesis, structural characterisation and thermoelectric properties of Bi1−xPbxOCuSe
Data(s) |
21/10/2013
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Resumo |
The effect of Pb2+ doping on the structure and thermoelectric properties of BiOCuSe (also known as BiCuSeO or BiCuOSe) is described. With increasing Pb2+ content, the expansion of the unit cell results in a weakening of the bonding between the [Bi2(1-x) Pb2xO2]2(1-x)+ and the [Cu2Se2]2(1-x)- layers. The electrical resistivity and Seebeck coefficient decrease in a systematic way with growing Pb2+ levels. The thermal conductivity rises due to the increase of the electronic contribution with doping. The power factor of materials with a 4-5% Pb2+ content takes values of ca. 8 W cm-1 K-2 over a wide temperature range. ZT at 673 K is enhanced by ca. 50% when compared to values found for other dopants, such as Sr2+ or Mg2+. |
Formato |
text |
Identificador |
http://centaur.reading.ac.uk/34764/1/revised%20manuscript.pdf Luu, S. D. N. and Vaqueiro, P. <http://centaur.reading.ac.uk/view/creators/90005590.html> (2013) Synthesis, structural characterisation and thermoelectric properties of Bi1−xPbxOCuSe. Journal of Materials Chemistry A, 1 (39). pp. 12270-12275. ISSN 0959-9428 doi: 10.1039/C3TA12753B <http://dx.doi.org/10.1039/C3TA12753B> |
Idioma(s) |
en |
Publicador |
Royal Society of Chemistry |
Relação |
http://centaur.reading.ac.uk/34764/ creatorInternal Vaqueiro, Paz http://dx.doi.org/10.1039/C3TA12753B 10.1039/C3TA12753B |
Tipo |
Article PeerReviewed |