Electronic structure of AgPb mSbTe m+2 compounds - Implications on thermoelectric properties

Khang Hoang, S. D. Mahanti, J. Androulakis, Mercouri G Kanatzidis

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

13 Citations (Scopus)

Abstract

Novel quaternary compounds AgPb mSbTe m+2 (LAST-m) with different m values have been synthesized recently and some of these compounds show promising thermoelectric properties at high temperatures. The two end members of the series, PbTe (m=∞) and AgSbTe 2 (m=0), are also known to be good thermoelectrics. In this paper, we discuss the results of ab initio electronic structure calculations for these two end members and for LAST-2 and LAST-14 to see how the electronic structure near the chemical potential μ, evolves with m. Whereas PbTe and LAST-14 are narrow band gap semiconductors, the other two compounds show pseudo-gap structure. Even in the absence of a true gap, the rapidly varying density of states (DOS) near μ may be conducive to large Seebeck coefficient in LAST-2, LAST-14, and AgSbTe 2.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium Proceedings
Pages181-185
Number of pages5
Volume886
Publication statusPublished - 2006
Event2005 Materials Research Society Fall Meeting - Boston, MA, United States
Duration: Nov 28 2005Dec 1 2005

Other

Other2005 Materials Research Society Fall Meeting
CountryUnited States
CityBoston, MA
Period11/28/0512/1/05

Fingerprint

Electronic structure
Seebeck coefficient
Chemical potential
Temperature
Narrow band gap semiconductors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Hoang, K., Mahanti, S. D., Androulakis, J., & Kanatzidis, M. G. (2006). Electronic structure of AgPb mSbTe m+2 compounds - Implications on thermoelectric properties. In Materials Research Society Symposium Proceedings (Vol. 886, pp. 181-185)

Electronic structure of AgPb mSbTe m+2 compounds - Implications on thermoelectric properties. / Hoang, Khang; Mahanti, S. D.; Androulakis, J.; Kanatzidis, Mercouri G.

Materials Research Society Symposium Proceedings. Vol. 886 2006. p. 181-185.

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

Hoang, K, Mahanti, SD, Androulakis, J & Kanatzidis, MG 2006, Electronic structure of AgPb mSbTe m+2 compounds - Implications on thermoelectric properties. in Materials Research Society Symposium Proceedings. vol. 886, pp. 181-185, 2005 Materials Research Society Fall Meeting, Boston, MA, United States, 11/28/05.
Hoang K, Mahanti SD, Androulakis J, Kanatzidis MG. Electronic structure of AgPb mSbTe m+2 compounds - Implications on thermoelectric properties. In Materials Research Society Symposium Proceedings. Vol. 886. 2006. p. 181-185
Hoang, Khang ; Mahanti, S. D. ; Androulakis, J. ; Kanatzidis, Mercouri G. / Electronic structure of AgPb mSbTe m+2 compounds - Implications on thermoelectric properties. Materials Research Society Symposium Proceedings. Vol. 886 2006. pp. 181-185
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