- All Journals
- Al-Qadisiyah University
- Basrah University
- Kirkuk University
- Mosul University
- The Iraqi Borad for Medical Specialization
- University of Anbar
- University of Technology
- Al Mustafa University
- Al-Zahraa University for Women
- Alnoor University
- Kunooz University
- Misan University
- Ninevah University
- Tikrit University
- University of Al-Hamdaniya
- University of Kerbala
Effect of Structural Properties Variation on the Ethanol Sensing of ZnO Thin Films | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 21, Issue 6, 2010, Pages 63-68 | ||
| Author | ||
| Ali Jasim Mohammed | ||
| Abstract | ||
| The microstructure characterization by X-ray line profile analysis is possible for determination of crystallite size , broadening (integral breadth), texture coefficient and shape factor . This study presents the X-ray diffraction peaks shape analysis and their broadening of ZnO thin films affected the chemical vapor sensing depending on the analysis of broadening of the peaks by integral breadth method which gives the coherent domain size, dislocation density and micro-strain present in the material . The comparable results from the X-ray techniques and ethanol sensing method with different thicknesses are related each other . For preferred orientation (002) with increasing ethanol concentration , increasing in thickness yields to increase all the previous structural properties and the measured ethanol sensing current will increase also and the sensitivity will increase with thickness and decreased with vapor concentration . The average grain size increasing , decreased the grain boundaries leads to decrease the barrier between the grains , and crossing this barrier by the charge carriers will be allowed and the sensing current , sensitivity will be grown . | ||
|
Statistics Article View: 96 PDF Download: 54 |
||