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dc.contributor.authorDravid, Vinayak P.
dc.contributor.authorAndroulakis, John
dc.contributor.authorUher, Ctirad
dc.contributor.authorKanatzidis, Mercouri G.
dc.contributor.authorBallikaya, Sedat
dc.contributor.authorAhn, Kyunghan
dc.contributor.authorHan, Mi-Kyung
dc.contributor.authorHe, Jiaqing
dc.date.accessioned2021-03-05T21:15:35Z
dc.date.available2021-03-05T21:15:35Z
dc.date.issued2010
dc.identifier.citationAhn K., Han M., He J., Androulakis J., Ballikaya S., Uher C., Dravid V. P. , Kanatzidis M. G. , "Exploring Resonance Levels and Nanostructuring in the PbTe-CdTe System and Enhancement of the Thermoelectric Figure of Merit", JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, cilt.132, ss.5227-5235, 2010
dc.identifier.issn0002-7863
dc.identifier.othervv_1032021
dc.identifier.otherav_d8033cf7-5cee-490e-b704-58fe411d3d7f
dc.identifier.urihttp://hdl.handle.net/20.500.12627/142525
dc.identifier.urihttps://doi.org/10.1021/ja910762q
dc.description.abstractWe explored the effect of Cd substitution on the thermoelectric properties of PbTe in an effort to test a theoretical hypothesis that Cd atoms on Pb sites of the rock salt lattice can increase the Seebeck coefficient via the formation of a resonance level in the density of states near the Fermi energy. We find that the solubility of Cd is less than previously reported, and CdTe precipitation occurs to create nanostructuring, which strongly suppresses the lattice thermal conductivity. We present detailed characterization including structural and spectroscopic data, transmission electron microscopy, and thermoelectric transport properties of samples of PbTe-x% CdTe-0.055% Pbl(2) (x = 1, 3, 5, 7, 10), PbTe-1% CdTe-y% Pbl(2) (y = 0.03, 0.045, 0.055, 0.08, 0.1, 0.2), PbTe-5% CdTe-y% Pbl(2) (y = 0.01, 0.03, 0.055, 0.08), and PbTe-1% CdTe-z% Sb (z = 0.3, 0.5, 1, 1.5, 2, 3, 4, 5, 6). All samples follow the Pisarenko relationship, and no enhancement of the Seebeck coefficient was observed that could be attributed to a resonance level or a distortion in the density of states. A maximum ZT of similar to 1.2 at similar to 720 K was achieved for the PbTe-1% CdTe-0.055% Pbl(2) sample arising from a high power factor of similar to 17 mu W/(cm K-2) and a very low lattice thermal conductivity of similar to 0.5 W/(m K) at similar to 720 K.
dc.language.isoeng
dc.subjectAlkoloidler
dc.subjectBiyokimya
dc.subjectKİMYA, MULTİDİSİPLİNER
dc.subjectTemel Bilimler (SCI)
dc.subjectKimya
dc.subjectTemel Bilimler
dc.titleExploring Resonance Levels and Nanostructuring in the PbTe-CdTe System and Enhancement of the Thermoelectric Figure of Merit
dc.typeMakale
dc.relation.journalJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
dc.contributor.departmentNorthwestern State University Of Louisiana , ,
dc.identifier.volume132
dc.identifier.issue14
dc.identifier.startpage5227
dc.identifier.endpage5235
dc.contributor.firstauthorID195707


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