Structure and thermoelectric properties of new layered compounds in the quaternary system Cs-Pb-Bi-Te

Kuei-Fang Hsu, Duck Young Chung, Sangeeta Lal, Tim Hogan, Mercouri G. Kanatzidis

研究成果: Conference article同行評審

3 引文 斯高帕斯(Scopus)

摘要

By introducing of various equivalents of PbTe into the layered framework of CsBi4Te6, the four new compounds CsPbBi3Te6 (1), CsPb2Bi3Te7 (2), CsPb3Bi3Te8 (3) and CsPb4Bi3Te9 (4), were discovered. The compounds adopt layered structures built up of anionic slabs of progressively increasing thickness. The [PbmBi3Te5+m]- (m = 1, 2, 3, 4) slabs in the four structures can be viewed as fragments excised from the PbTe-type structures with 4-, 5-, 6- and 7-monolayers, respectively. As prepared, these materials are off-stoichiometric and n-type conductors. We present preliminary results of the crystal structures and thermoelectric properties of these materials and classify them as members of the new homologous series CsPbmBi3Te5+m (m = 1 to 4).

原文English
頁(從 - 到)269-274
頁數6
期刊Materials Research Society Symposium - Proceedings
691
出版狀態Published - 2002 1月 1
事件Thermoelectric Materials 2001-Research and Applications - Boston, MA, United States
持續時間: 2001 11月 262001 11月 29

All Science Journal Classification (ASJC) codes

  • 材料科學(全部)
  • 凝聚態物理學
  • 材料力學
  • 機械工業

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