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dc.contributor.authorHatzikraniotis, E.en
dc.contributor.authorKyratsi, Theodoraen
dc.contributor.authorZorba, T.en
dc.contributor.authorParaskevopoulos, K. M.en
dc.contributor.authorKanatzidis, M. G.en
dc.creatorHatzikraniotis, E.en
dc.creatorKyratsi, Theodoraen
dc.creatorZorba, T.en
dc.creatorParaskevopoulos, K. M.en
dc.creatorKanatzidis, M. G.en
dc.description.abstractSolid solutions of K2Bi8-xSbxSe 13 is an interesting series of complex bismuth-chalcogenide compounds, which are attractive for thermoelectric investigations. The highly anisotropic structure in these compounds results in needle-like morphology along the b- crystallographic axis, leaving structural tunnels where K+ ions reside. The complex electronic structure that arises from a large and low symmetry unit cell and the weakly bound K+ ions, lead to high Seebeck coefficient, highly anisotropic electrical properties and very low thermal conductivity. Reflectivity spectra in the FIR region are presented for several members in the Sb-rich (x≥6) side. Optical investigations are carried out on crystalline and pelletized samples. The received spectra are analyzed, examined comparatively and discussed. Results indicate that upon Bi/Sb substitution in the Sb-rich region, phonons develop a mixed-mode behavior in the FIR spectral region. © 2006 Materials Research Society.en
dc.publisherAffiliation: Physics Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greeceen
dc.publisherAffiliation: Department of Chemistry, Michigan State University, East Lansing, MI 48824, United Statesen
dc.publisherAffiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678 Nicosia, Cyprusen
dc.publisherCorrespondence Address: Hatzikraniotis, E.en
dc.publisherPhysics Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greeceen
dc.sourceMaterials Research Society Symposium Proceedingsen
dc.subjectOptical propertiesen
dc.subjectThermal conductivityen
dc.subjectSolid solutionsen
dc.subjectElectronic structureen
dc.subjectBismuth compoundsen
dc.subjectAlkali metalsen
dc.subjectElectric propertiesen
dc.subjectOptical investigationsen
dc.subjectPelletized samplesen
dc.subjectStructural tunnelsen
dc.subjectThermoelectric investigationsen
dc.titleOn the optical properties of thermoelectric alkali metal chalcogenide compoundsen
dc.description.endingpage274Πολυτεχνική Σχολή / Faculty of EngineeringΤμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering
dc.type.uhtypeConference Objecten
dc.contributor.orcidKyratsi, Theodora [0000-0003-2916-1708]

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