Investigation of thermoelectric materials

Substitution effect of Bi on the Ag1-xPb18MTe20 (M = Sb, Bi) (x = 0, 0.14, 0.3)

Mi Kyung Han, Huijun Kong, Ctirad Uher, Mercouri G Kanatzidis

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

1 Citation (Scopus)

Abstract

We performed comparative investigations of the Ag1-xPb 18MTe20 (M = Bi, Sb) (x = 0, 0.14, 0.3) system to better understand the roles of Sb and Bi on the thermoelectric properties. In both systems, the electrical conductivity nearly keeps the same values, while the Seebeck coefficient decreases dramatically in going from Sb to Bi. Compared to the lattice thermal conductivity of PbTe, that of AgPh18BiTe 20 is substantially reduced. The lattice thermal conductivity of the Bi analog, however, is higher than that of AgPb18SbTe20 and this is attributed largely to the decrease in the degree of mass fluctuation between the nanostructures and the matrix (for the Bi analog). As a result the dimensionless figure of merit ZT of Ag1-xPb18MTe 20 (M = Bi) is found to be smaller than that of Ag 1-xPb18MTe20 (M = Sb).

Original languageEnglish
Title of host publicationMaterials Research Society Symposium Proceedings
Pages95-100
Number of pages6
Volume1044
Publication statusPublished - 2008
EventThermoelectric Power Generation - Boston, MA, United States
Duration: Nov 26 2007Nov 29 2007

Other

OtherThermoelectric Power Generation
CountryUnited States
CityBoston, MA
Period11/26/0711/29/07

Fingerprint

thermoelectric materials
Thermal conductivity
Substitution reactions
thermal conductivity
substitutes
analogs
Seebeck coefficient
Seebeck effect
figure of merit
Nanostructures
electrical resistivity
matrices
Electric Conductivity

ASJC Scopus subject areas

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

Cite this

Han, M. K., Kong, H., Uher, C., & Kanatzidis, M. G. (2008). Investigation of thermoelectric materials: Substitution effect of Bi on the Ag1-xPb18MTe20 (M = Sb, Bi) (x = 0, 0.14, 0.3). In Materials Research Society Symposium Proceedings (Vol. 1044, pp. 95-100)

Investigation of thermoelectric materials : Substitution effect of Bi on the Ag1-xPb18MTe20 (M = Sb, Bi) (x = 0, 0.14, 0.3). / Han, Mi Kyung; Kong, Huijun; Uher, Ctirad; Kanatzidis, Mercouri G.

Materials Research Society Symposium Proceedings. Vol. 1044 2008. p. 95-100.

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

Han, MK, Kong, H, Uher, C & Kanatzidis, MG 2008, Investigation of thermoelectric materials: Substitution effect of Bi on the Ag1-xPb18MTe20 (M = Sb, Bi) (x = 0, 0.14, 0.3). in Materials Research Society Symposium Proceedings. vol. 1044, pp. 95-100, Thermoelectric Power Generation, Boston, MA, United States, 11/26/07.
Han MK, Kong H, Uher C, Kanatzidis MG. Investigation of thermoelectric materials: Substitution effect of Bi on the Ag1-xPb18MTe20 (M = Sb, Bi) (x = 0, 0.14, 0.3). In Materials Research Society Symposium Proceedings. Vol. 1044. 2008. p. 95-100
Han, Mi Kyung ; Kong, Huijun ; Uher, Ctirad ; Kanatzidis, Mercouri G. / Investigation of thermoelectric materials : Substitution effect of Bi on the Ag1-xPb18MTe20 (M = Sb, Bi) (x = 0, 0.14, 0.3). Materials Research Society Symposium Proceedings. Vol. 1044 2008. pp. 95-100
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