P8.8 - UTAM ZnO Nanostructured Thin Film CO Sensor
- AMA Conferences 2015
2015-05-19 - 2015-05-21
- Proceedings SENSOR 2015
- P8 - Gas
- A. Mohammed - Al-Mustansiriyah University, Baghdad (Iraq), G. Wilde - University of Muenster, Muenster (Germany)
- 851 - 854
Zinc oxide nanowires/nanobelts thin films were prepared by atomic layer deposition (ALD) of Zn on Cr-glass substrates using an ultrathin aluminum membrane (UTAM). ZnO nanostructured based CO- gas sensing thin films were formed, and the morphologies of these films were investigated by scanning electron microscopy (SEM). The sensing response of the films toward CO gas at operating temperatures in the range of (25, 75, 125, 150, and 175)ºC was studied. The set-up designed to measure the gas sensing ability due to the change of the resistivity related to the gas addition, the electrical resistivity as well as the gas sensing properties of the ZnO nanostructured thin films changed significantly with the operating temperatures. The sensitivity increased with increasing operating temperature, particularly above 150 ºC.