| Autor: |
Shendage, Sambhaji S., Patil, Vithoba L., Vanalakar, Sharadrao A., Patil, Sarita P., Bhosale, Jalindar L., Kim, Jin. H., Patil, Pramod. S. |
| Zdroj: |
Zeitschrift für Physikalische Chemie; December 2020, Vol. 234 p1819-1834, 16p |
| Abstrakt: |
The WO3thin films have been synthesized on to the glass substrates by a simple and easy spin coating method at different deposition cycles and their sensor responses towards various concentrations of NO2gas were investigated. The WO3films were spin coated at a spinning rate of 2500–3000 rpm for 5, 10 and 15 deposition cycles, respectively. Then the films were annealed at 400 °C for 1 h in a furnace. The structural, morphological, optical and electrical properties of WO3films were studied by different characterization techniques such as X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), FT-RAMAN Spectroscopy and electrical resistivity measurements by laboratory made two probe method respectively. It reveals a spherical grain – like morphology with a pure monoclinic phase of WO3. The FT-RAMAN spectra also confirm the pure monoclinic phase of WO3. The WO3-10 film sensor exhibits maximum gas sensitivity 21.93 and 102.4% to 5 and 100 ppm NO2at 200 °C, respectively. The WO3-10 thin film sensors is highly sensitive and selective to NO2over other gases. |
| Databáze: |
Supplemental Index |
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