Heterogeneous in-situ nanostructure contributes to the thermoelectric performance of Zn4Sb3

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

18 Scopus Citations
View graph of relations

Author(s)

  • Jianping Lin
  • Guanjun Qiao
  • Lingzhi Ma
  • Baifeng Yang
  • Youjian Fei
  • Lei Lei

Detail(s)

Original languageEnglish
Article number163902
Journal / PublicationApplied Physics Letters
Volume102
Issue number16
Publication statusPublished - 22 Apr 2013
Externally publishedYes

Abstract

Single-phase Zn4Sb3 and ZnSb-containing samples were prepared by Plasma Activated Sintering. An abrupt decrease of thermal conductivity was found at about 400 K, which is attributed to the microstructure change of Zn4Sb3. Nanoscale inclusions and compositional inhomogeneities were found in Zn4Sb3 sample at 473 K by high-resolution transmission electron microscopy. The phonon scattering is enhanced by increasing grain boundaries and chaotic structure, which reduces the thermal conductivity and increases the thermoelectric performance of Zn 4Sb3 at elevated temperature. The Rietveld refinement results show that large ZnSb grains in ZnSb-containing samples will accommodate excess Zn atoms, and then reduce thermoelectric performance. © 2013 AIP Publishing LLC.

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Heterogeneous in-situ nanostructure contributes to the thermoelectric performance of Zn4Sb3. / Lin, Jianping; Qiao, Guanjun; Ma, Lingzhi; Ren, Yang; Yang, Baifeng; Fei, Youjian; Lei, Lei.

In: Applied Physics Letters, Vol. 102, No. 16, 163902, 22.04.2013.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review