Impact of the thickness of Nickel oxide film for nitrogen dioxide gas sensing Applications

Authors

  • Sabah J. Mezher Physics Department, Science Faculty, University of Al- Mustansiriyah, Baghdad, Iraq Author
  • Ehssan S. Hassan Physics Department, Science Faculty, University of Al- Mustansiriyah, Baghdad, Iraq Author
  • Marwa Abdul Muhsien Hassan Physics Department, Science Faculty, University of Al- Mustansiriyah, Baghdad, Iraq Author
  • Firas S. A. Ameer Physics Department, Science Faculty, University of Al- Mustansiriyah, Baghdad, Iraq Author

DOI:

https://doi.org/10.24017/science.2017.3.56

Keywords:

magnetron sputtering, Nickel oxide, Nitrogen dioxide, Dynamic resistance, Sensitivity.

Abstract

Nickel oxide (NiO) thin films were formed by RF reactive magnetron sputtering onto glass substrates. The Argon and Oxygen partial pressure were (3.2×10-3 torr) and (2.12×10-2 torr) respectively at room temperature. The thickness of the films deposited was in the range of 50-150 nm. The thickness necessity structural, electrical and sensing properties of (NiO) films were methodically examined. X-ray diffraction method which shows polycrystalline landscape with preferred reflection peak at (200) plane. Scanning electron microscope analysis revealed that the growth of nanorods in all the films. The gas sensitivity of nitrogen dioxide gas was (67 %). It was observed that the gas sensitivity for (NiO) films was increased as film thickness increases.

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Published

27-08-2017

Issue

Special Issue: 1st International Conference on Engineering and Computing (ICEC2017)

Section

Pure and Applied Science

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