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Your search keyword '"Dyck, Jeff S."' showing total 5 results
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2. Structure inhomogeneities, shallow defects, and charge transport in the series of thermoelectric materials K2Bi8-xSbxSe13.

Author

Kyratsi, Theodora, Hatzikraniotis, Euripides, Paraskevopoulos, Konstantinos M., Malliakas, Christos D., Dyck, Jeff S., Uher, Ctirad, and Kanatzidis, Mercouri G.

Subjects
THERMOELECTRIC materials, BISMUTH-antimony alloys, CHARGE transfer, THERMAL properties of semiconductors, ELECTRIC conductivity, ELECTRONIC structure, ELECTRON diffraction
Abstract

The charge transport properties of the low-dimensional thermoelectric materials K2Bi8-xSbxSe13 (02Bi8-xSbxSe13 was analyzed on the basis of the classical semiconductor theory and discussed in the context of recent band calculations. The results suggest that the K2Bi8-xSbxSe13 materials possess coexisting domains with semimetallic and semiconducting characters whose ratio is influenced by the value of x and by local defects. The extent and relative distribution of these domains control the charge transport properties. Electron diffraction experiments performed on samples of K2Bi8-xSbxSe13 with x=1.6 show evidence for such domains by indicating regions with long range ordering of K+/Bi3+ atoms and regions with increased disorder. The semiconducting behavior is enhanced with increasing x (i.e., Sb/Bi ratio) in the composition through a decrease of the semimetallic fraction. [ABSTRACT FROM AUTHOR]

Published
2006
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3. Structure inhomogeneities, shallow defects, and charge transport in the series of thermoelectric materials [K.sub.2][Bi.sub.[8-x]][Sb.sub.x][Se.sub.13]

Author

Kyratsi, Theodora, Hatzikraniotis, Euripides, Paraskevopoulos, Konstantinos M., Malliakas, Christos D., Dyck, Jeff S., Uher, Ctirad, and Kanatzidis, Mercouri G.

Subjects
Potassium compounds -- Thermal properties, Potassium compounds -- Electric properties, Thermoelectric apparatus and appliances -- Properties, Transmission electron microscopes -- Observations, Electrons -- Diffraction, Electrons -- Analysis, Physics
Abstract

The charge transport properties of the low-dimensional thermoelectric materials [K.sub.2][Bi.sub.[8.x]][Sb.sub.x][Se.sub.13] (0

Published
2006

5. Structure inhomogeneities, shallow defects, and charge transport in the series of thermoelectric materials K2Bi8-xSbxSe13.

Author

Kyratsi, Theodora, Hatzikraniotis, Euripides, Paraskevopoulos, Konstantinos M., Malliakas, Christos D., Dyck, Jeff S., Uher, Ctirad, and Kanatzidis, Mercouri G.

Subjects
*THERMOELECTRIC materials, *BISMUTH-antimony alloys, *CHARGE transfer, *ELECTRIC conductivity, *ELECTRONIC structure, *ELECTRON diffraction, THERMAL properties of semiconductors
Abstract

The charge transport properties of the low-dimensional thermoelectric materials K2Bi8-xSbxSe13 (0

Published
2006
Full Text
View/download PDF

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