Thermoelectric properties of Bi 2O 2Se

Bi 2O 2Se was synthesized from Bi 2Se 3 and Bi 2O 3 by solid state reaction in an evacuated quartz ampoule. The product crystallizes in the tetragonal type lattice and X-ray pattern displays lines of the Bi 2O 2Se only. Samples for thermoelectric property measurements were prepared using hot pressin...

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Bibliographic Details
Published inMaterials chemistry and physics Vol. 119; no. 1; pp. 299 - 302
Main Authors Ruleova, P., Drasar, C., Lostak, P., Li, C.-P., Ballikaya, S., Uher, C.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2010
Subjects
Bi 2O 2Se semiconductor
Chemical synthesis
Electrical characterization
Thermoelectric properties
Electrical characterization
Chemical synthesis
Bi 2O 2Se semiconductor
Thermoelectric properties
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Summary:Bi 2O 2Se was synthesized from Bi 2Se 3 and Bi 2O 3 by solid state reaction in an evacuated quartz ampoule. The product crystallizes in the tetragonal type lattice and X-ray pattern displays lines of the Bi 2O 2Se only. Samples for thermoelectric property measurements were prepared using hot pressing in rectangular graphite dies. The samples were characterized by the measurements of Seebeck coefficient, electrical conductivity and thermal conductivity as a function of temperature. From the experimental data we calculate the dimensionless figure of merit ZT that for a non-optimized material approaches the value 0.2 at 800 K.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2009.08.067