Calcination effects on the properties of Gallium-doped zinc oxide powders

Shangfeng Du, Yajun Tian, Haidi Liu, Jian Liu, Yunfa Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

Highly conductive Gallium-doped zinc oxide (Zn1-xGa xO) powder was prepared by calcining precursor that was synthesized from ZnSO4 · 7H2O, GaCl3, and NH 4HCO3 by the coprecipitation method. The effects of temperature, heating time, and atmosphere on the calcination process were studied, and we found that these factors are important to control the electrical conductivity, particle size, and agglomeration of Zn1-xGa xO powder. By studying these processing conditions, we found that the optimum one is calcining the precursor in H2 at 540°C for about 1.5 h, and the product has a specific surface area higher than 28 m 2/g and volume resistivity lower than 16.8 Ω · cm. The chemistry details of the doping process were also discussed based on the experimental results.

Original languageEnglish (US)
Pages (from-to)2440-2443
Number of pages4
JournalJournal of the American Ceramic Society
Volume89
Issue number8
DOIs
StatePublished - Aug 2006
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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