Understanding electrical transport and the large power factor enhancements in co-nanostructured PbTe

Joseph R. Sootsman, Vladimir Jovovic, Christopher M. Jaworski, Joseph P. Heremans, Jiaqing He, Vinayak P. Dravid, Mercouri G Kanatzidis

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

Abstract

We previously reported the synthesis of nanostructured composite PbTe with excess Pb and Sb metal inclusions. The electrical conductivity shows an unusual temperature dependence that depends on the inclusion Pb/Sb ratio, resulting in marked enhancements in power factor and ZT at 700 K. Additional investigation of the transport and structure of these materials is reported here. Measurements of the scattering parameter reveals there is little change in electron scattering with respect to pure PbTe. High resolution electron microscopy was used to determine additional information about the nature of the precipitate phases present in the samples. High temperature transmission electron microscopy reveals that the precipitates begin to dissolve at high temperatures and completely disappear at T > 619K. A qualitative explanation of the unusual transport behavior of these materials is presented.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium Proceedings
Pages77-82
Number of pages6
Volume1166
Publication statusPublished - 2009
Event2009 MRS Spring Meeting: Materials and Devices for Thermal-to-Electric Energy Conversion - San Francisco, CA, United States
Duration: Apr 13 2009Apr 17 2009

Other

Other2009 MRS Spring Meeting: Materials and Devices for Thermal-to-Electric Energy Conversion
CountryUnited States
CitySan Francisco, CA
Period4/13/094/17/09

Fingerprint

precipitates
inclusions
augmentation
Precipitates
electron microscopy
electron scattering
Electron scattering
High resolution electron microscopy
Scattering parameters
Temperature
temperature dependence
transmission electron microscopy
electrical resistivity
composite materials
high resolution
synthesis
Metals
scattering
metals
Transmission electron microscopy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Sootsman, J. R., Jovovic, V., Jaworski, C. M., Heremans, J. P., He, J., Dravid, V. P., & Kanatzidis, M. G. (2009). Understanding electrical transport and the large power factor enhancements in co-nanostructured PbTe. In Materials Research Society Symposium Proceedings (Vol. 1166, pp. 77-82)

Understanding electrical transport and the large power factor enhancements in co-nanostructured PbTe. / Sootsman, Joseph R.; Jovovic, Vladimir; Jaworski, Christopher M.; Heremans, Joseph P.; He, Jiaqing; Dravid, Vinayak P.; Kanatzidis, Mercouri G.

Materials Research Society Symposium Proceedings. Vol. 1166 2009. p. 77-82.

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

Sootsman, JR, Jovovic, V, Jaworski, CM, Heremans, JP, He, J, Dravid, VP & Kanatzidis, MG 2009, Understanding electrical transport and the large power factor enhancements in co-nanostructured PbTe. in Materials Research Society Symposium Proceedings. vol. 1166, pp. 77-82, 2009 MRS Spring Meeting: Materials and Devices for Thermal-to-Electric Energy Conversion, San Francisco, CA, United States, 4/13/09.
Sootsman JR, Jovovic V, Jaworski CM, Heremans JP, He J, Dravid VP et al. Understanding electrical transport and the large power factor enhancements in co-nanostructured PbTe. In Materials Research Society Symposium Proceedings. Vol. 1166. 2009. p. 77-82
Sootsman, Joseph R. ; Jovovic, Vladimir ; Jaworski, Christopher M. ; Heremans, Joseph P. ; He, Jiaqing ; Dravid, Vinayak P. ; Kanatzidis, Mercouri G. / Understanding electrical transport and the large power factor enhancements in co-nanostructured PbTe. Materials Research Society Symposium Proceedings. Vol. 1166 2009. pp. 77-82
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