Flux synthesis of new multinary bismuth chalcogenides and their thermoelectric properties

Duck Young Chung, Kyoung Shin Choi, Paul W. Brazis, Carl R. Kannewurf, Mercouri G. Kanatzidis

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)

Abstract

We present the synthesis and structure of the new chalcogenide compounds, Rb0.5Bi1.83Te3, APb2Bi3Te7 (A = Cs, Rb), K1.25Pb3.50Bi7.25Se15 and A1+xPb4-2xSb7+xSe15 (A = K, Rb). The layered structures of the first two telluride compounds are related to each other in a very interesting fashion. These compounds are n-type metallic conductors and solid solutions with Se and Sb have also been synthesized. K1.25Pb3.50Bi7.25Se1.5 and its Sb analogs have a complex three-dimensional structure composed of NaCl- and Bi2Te3-type building units. The thermal stability, melting behavior, electrical conductivity and thermopower of these compounds are reported.

Original languageEnglish
Pages (from-to)65-74
Number of pages10
JournalMaterials Research Society Symposium - Proceedings
Volume545
Publication statusPublished - Jan 1 1999
EventProceedings of the 1998 MRS Fall Meeting - The Symposium 'Advanced Catalytic Materials-1998' - Boston, MA, USA
Duration: Nov 30 1998Dec 3 1998

ASJC Scopus subject areas

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

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