CsMBi(3)Te(6) and CsM(2)Bi(3)Te(7) (M = Pb, Sn): new thermoelectric compounds with low-dimensional structures

Kuei-Fang Hsu; Duck-Young Chung; Sangeeta Lal; Antje Mrotzek; Theodora Kyratsi; Tim Hogan; Mercouri G Kanatzidis

doi:10.1021/ja017602i

CsMBi(3)Te(6) and CsM(2)Bi(3)Te(7) (M = Pb, Sn): new thermoelectric compounds with low-dimensional structures

J Am Chem Soc. 2002 Mar 20;124(11):2410-1. doi: 10.1021/ja017602i.

Authors

Kuei-Fang Hsu¹, Duck-Young Chung, Sangeeta Lal, Antje Mrotzek, Theodora Kyratsi, Tim Hogan, Mercouri G Kanatzidis

Affiliation

¹ Department of Chemistry, Center for Fundamental Materials Research, Michigan State University, East Lansing, MI 48824, USA.

PMID: 11890769
DOI: 10.1021/ja017602i

Abstract

The new materials CsPbBi(3)Te(6) and CsPb(2)Bi(3)Te(7) were discovered through reactions of CsBi(4)Te(6) with PbTe, whereas the isostructural materials CsSnBi(3)Te(6) and CsSn(2)Bi(3)Te(7) were discovered through corresponding reactions with SnTe. The compounds can also be prepared from stoichiometric mixtures of Cs(2)Te, Pb (Sn), Bi, and Te. The crystal structures show a layered architecture of NaCl-type slabs alternating with layers of Cs atoms. This group of compounds offers a new quaternary system, Cs-M-Bi-Te (M = Pb and Sn), available for thermoelectric investigations, including fine-tuning of compositions and doping.