Phase analysis and thermoelectric properties of Zn1-xM xO (M= Al, Ga) samples

Kwang Hee Jung, Soon Mok Choi, Chang Hyun Lim, Won Seon Seo, Hyung Ho Park

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Thermoelectric oxides have been regarded as promising materials for power generation especially at high temperature. Among them, ZnO systems have been reported as useful n-type thermoelectrics because of high Seebeck coefficients and electrical conductivities at high temperature. In this study, we investigated polycrystalline ZnO systems doped with different donor ions Al 3+ and Ga3+. We investigated reasons of different solution limits and secondary phases and microstructures between these two donor-doped cases. Thermoelectric properties also showed different tendency between Al 3+-and Ga3+-doped ZnO systems because of their different structural properties. As a result, a maximum power factor value 9.18 × 10-4 W/mK2 at 1050 K was obtained in Zn 0.98Ga0.02O composition.

Original languageEnglish
Pages (from-to)1507-1510
Number of pages4
JournalSurface and Interface Analysis
Volume44
Issue number11-12
DOIs
Publication statusPublished - 2012

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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