CuO nanowire-based humidity sensors prepared on glass substrate

H. T. Hsueh, T. J. Hsueh, S. J. Chang, F. Y. Hung, T. Y. Tsai, W. Y. Weng, C. L. Hsu, B. T. Dai

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89 Citations (Scopus)

Abstract

The authors report the growth of CuO nanowires (NWs) on glass substrate and the fabrication of CuO NW humidity sensors. It was found that average length of the CuO NWs increased from 0.4 μm to 2.8 and 6 μm, respectively, as we increased the initial copper film thickness from 0.5 μm to 1 and 2 μm after oxidation. It was also found that resistance of the CuO NWs increased as we increased the relative humidity due to the p-type nature of CuO. Furthermore, it was found that samples with a larger initial copper film thickness and thus a longer average CuO NW length could provide a larger sensor response.

Original languageEnglish
Pages (from-to)906-911
Number of pages6
JournalSensors and Actuators, B: Chemical
Volume156
Issue number2
DOIs
Publication statusPublished - 2011 Aug

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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