Structural optimization for thermoelectric properties in Cu-Bi-S pavonite compounds

Jae Yeol Hwang, Jun Yeon Ahn, Kyu Hyoung Lee, Sung Wng Kim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We report the enhancement of thermoelectric properties in the complex structured Cu-Bi-S pavonite compounds by optimizing the structural configuration through tuning the Bi-site occupancy, and substitutional doping at interstitial Cu sites by Zn. We verify that electronic transport properties depend on the structural deformation by the Bi site occupancy. Furthermore, we demonstrate that the modification of interstitial site ions enables selective control of thermal conductivity and intrinsically low thermal conductivity can be further suppressed by structural optimization without deteriorating electronic transport properties. We propose that understanding of crystal structure as a basic strategy permits the optimization of thermoelectric properties in the complex structures.

Original languageEnglish
Pages (from-to)282-288
Number of pages7
JournalJournal of Alloys and Compounds
Volume704
DOIs
Publication statusPublished - 2017 Jan 1

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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