Thermoelectric Properties of Pb-Doped BiCuSeO Ceramics

Authors

  • Yao-chun Liu,

    1. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China
    2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
    Search for more papers by this author
  • Jin-Le Lan,

    1. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China
    Search for more papers by this author
  • Bin Zhan,

    1. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China
    Search for more papers by this author
  • Junxuan Ding,

    1. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China
    Search for more papers by this author
  • Yong Liu,

    1. Laboratory of Structural Steel, Functional Materials and Heat Treatment Processing Technology, Beijing Institute of Aeronautical Materials, Beijing, China
    Search for more papers by this author
  • Yuan-Hua Lin,

    Corresponding author
    1. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China
    Search for more papers by this author
  • Boping Zhang,

    1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, China
    Search for more papers by this author
  • Ce-wen Nan

    1. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, China
    Search for more papers by this author

Abstract

A high-performance thermoelectric BiCuSeO oxyselenides has been prepared by a simple fabrication approach. Phase composition and microstructure analysis indicate that the obtained ceramic samples are almost BiCuSeO phase with plate structure. Our results show that Pb-doped BiCuSeO bulks have good electrical conductivity, large Seebeck coefficient, and low thermal conductivity. A large power factor ~672 μ/Wm/K2 at 573 K can be observed in the BiCuSeO ceramic by the 10% Pb doping, and the dimensionless figure of merit (ZT) can reach 0.95 at 873 K, which makes them promising candidates for thermoelectric applications.

Ancillary