LiPbSb3S6: A semiconducting sulfosalt with very low thermal conductivity

Eva C. Agha, Christos D. Malliakas, Jino Im, Hosub Jin, Li Dong Zhao, Arthur J. Freeman, Mercouri G. Kanatzidis

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12 Citations (Scopus)

Abstract

The new semiconductor LiPbSb3S6 crystallizes in the space group P21/c. The structure is a member of the lillianite homologous series and is composed of layers of PbS archetype Sb/Li-S separated by trigonal-prismatic-coordinated Pb/Li. Electronic band structure calculations indicate an indirect band gap, with direct gaps lying very close in energy. LiPbSb3S6 has one of the lowest thermal conductivities seen in a crystalline material, ∼0.24 W m-1 K-1 at room temperature, and a high resistivity, ∼4 × 109 Ωcm, and exhibits strong light absorption with a nearly direct band gap of 1.6 eV.

Original languageEnglish
Pages (from-to)673-675
Number of pages3
JournalInorganic Chemistry
Volume53
Issue number2
DOIs
Publication statusPublished - Jan 21 2014

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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