1. ZnO nanowires coated with CuO films as highly sensitive H2S sensors.
- Author
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Datta, Niyanta, Ramgir, N. S., Kaur, Manmeet, Debnath, A. K., Aswal, D. K., and Gupta, S. K.
- Subjects
ZINC oxide ,NANOWIRES ,METAL coating ,COPPER oxide ,THIN films ,GAS detectors ,THICKNESS measurement - Abstract
The gas sensing characteristics of ZnO nanowires (NWs) coated with different thickness of CuO film have been investigated. ZnO NWs were grown on Si/SiO2 by hydrothermal method and CuO films were deposited by thermal evaporation. It has been found that ZnO NWs exhibit characteristic n-type behavior upto a CuO thickness of 50 nm; whereas at higher thickness the samples show p-type behavior (typical of CuO). At a CuO thickness of 10 nm the sensitivity towards H2S was 500% more as compared to pure ZnO NWs films. In addition, the operating temperature was reduced to 200°C. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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