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- W2783103292 abstract "Ammonia is one of the most hazardous substances and it is extremely toxic if inhaled above the moderate level. Therefore, the detection of the ammonia at low concentration levels and at room temperature is one of the most challenging tasks. Among different methods to this goal, metal oxide semiconductors (MOSs) based vapor or gas sensors are mostly preferred because of their fast and high response, and cost effectiveness. This research reports the effect of Mg doping on structural and ammonia gas sensing properties of zinc oxide thin films. The spray pyrolysis technique was employed to deposit undoped and Mg-doped ZnO thin films on glass substrates. Doping concentration was varied from 0.003 to 0.009 M in steps of 0.002 M. The crystalline structure of the samples was confirmed by X-ray diffraction (XRD) analysis while a field emission scanning electron microscope (FESEM) was used to study the surface physical morphology of the samples. The sensitivity of the samples was investigated to ammonia gas with different concentrations in the range of 10 to 100 ppm at room temperature. The results reveal that the best sensitivity is attributed to the sample doped with 0.005 M Mg while an increase in Mg concentration results in a reduction in the sensitivity of the samples." @default.
- W2783103292 created "2018-01-26" @default.
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- W2783103292 date "2018-01-01" @default.
- W2783103292 modified "2023-09-27" @default.
- W2783103292 title "On the dependence of structural and ammonia gas sensing properties of ZnO thin films on Mg doping" @default.
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- W2783103292 doi "https://doi.org/10.1063/1.5018981" @default.
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