ZnO nanowire-based CO sensors prepared at various temperatures

Ting Jen Hsueh, Yi Wen Chen, Shoou Jinn Chang, Sea Fue Wang, Cheng Liang Hsu, Yan Ru Lin, Tzer Shen Lin, I. Cherng Chen

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

ZnO nanowire-based CO gas sensors were fabricated by growing single crystal ZnO nanowires on patterned ZnO:GaSi O2 Si templates at various temperatures. It was found that the average length of the nanowires increased while the average diameter of the nanowires decreased as we increased the growth temperature from 600 to 700°C. It was also found that the nanowires became significantly shorter as the growth temperature was increased. By measuring the resistivity change of the samples at 320°C, it was found that the sensor responses were of 3, 17, 57, 7.5, and 5% for the ZnO nanowires grown at 600, 650, 700, 750, and 800°C, respectively. Furthermore, it was found that the sensitivity of the sensor was relatively increased when the concentration of injected CO gas increased.

Original languageEnglish
Pages (from-to)J393-J396
JournalJournal of the Electrochemical Society
Volume154
Issue number12
DOIs
Publication statusPublished - 2007

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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