Transport properties of the doped thermoelectric material β-K2Bi8Se13

Paul W. Brazis, Melissa A. Rocci-Lane, John R. Ireland, Duck Young Chung, Mercouri G Kanatzidis, Carl R. Kannewurf

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Citations (Scopus)

Abstract

The synthesis, physicochemical, spectroscopic, and structural characterization of the compounds β-K2Bi8Se13, K2Sb8Se13, K2.5Bi8.5Se14, and K2.5Sb8.5Se14 have been previously reported and show promising properties for thermoelectric applications. While β-K2Bi8Se13 is isostructural with K2Bi8Se13, the isostructural K2.5Bi8.5Se14 and K2.5Sb8.5Se14 are different but have similar structural features to β-K2Bi8Se13. Compared with α-K2Bi8Se13, which has a room temperature electrical conductivity of 2 S/cm and a Seebeck coefficient ranging from -210 to -260 μV/K, β-K2Bi8Se13 shows excellent electrical conductivity values at room temperature while maintaining high Seebeck coefficients. In this work the doping of the homologous compound β-K2Bi8Se13 was explored by employing varying concentrations of different dopants. Where possible, transport measurements were carried out on both single crystal and polycrystalline ingot material. From these data the trends in the key parameters were identified for optimizing the power factor and figure of merit.

Original languageEnglish
Title of host publicationInternational Conference on Thermoelectrics, ICT, Proceedings
PublisherIEEE
Pages619-622
Number of pages4
Publication statusPublished - 1999
Event18th International Conference on Thermoelectrics (ICT'99) - Baltimore, MD, USA
Duration: Aug 29 1999Sep 2 1999

Other

Other18th International Conference on Thermoelectrics (ICT'99)
CityBaltimore, MD, USA
Period8/29/999/2/99

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Seebeck coefficient
Transport properties
Doping (additives)
Ingots
Single crystals
Temperature
Electric Conductivity

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Brazis, P. W., Rocci-Lane, M. A., Ireland, J. R., Chung, D. Y., Kanatzidis, M. G., & Kannewurf, C. R. (1999). Transport properties of the doped thermoelectric material β-K2Bi8Se13. In International Conference on Thermoelectrics, ICT, Proceedings (pp. 619-622). IEEE.

Transport properties of the doped thermoelectric material β-K2Bi8Se13. / Brazis, Paul W.; Rocci-Lane, Melissa A.; Ireland, John R.; Chung, Duck Young; Kanatzidis, Mercouri G; Kannewurf, Carl R.

International Conference on Thermoelectrics, ICT, Proceedings. IEEE, 1999. p. 619-622.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Brazis, PW, Rocci-Lane, MA, Ireland, JR, Chung, DY, Kanatzidis, MG & Kannewurf, CR 1999, Transport properties of the doped thermoelectric material β-K2Bi8Se13. in International Conference on Thermoelectrics, ICT, Proceedings. IEEE, pp. 619-622, 18th International Conference on Thermoelectrics (ICT'99), Baltimore, MD, USA, 8/29/99.
Brazis PW, Rocci-Lane MA, Ireland JR, Chung DY, Kanatzidis MG, Kannewurf CR. Transport properties of the doped thermoelectric material β-K2Bi8Se13. In International Conference on Thermoelectrics, ICT, Proceedings. IEEE. 1999. p. 619-622
Brazis, Paul W. ; Rocci-Lane, Melissa A. ; Ireland, John R. ; Chung, Duck Young ; Kanatzidis, Mercouri G ; Kannewurf, Carl R. / Transport properties of the doped thermoelectric material β-K2Bi8Se13. International Conference on Thermoelectrics, ICT, Proceedings. IEEE, 1999. pp. 619-622
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