Back to Search
Start Over
Evaluation of IDE-based flexible thin film ZnO sensor for VOC sensing in a custom designed gas chamber at room temperature.
- Source :
- Journal of Materials Science: Materials in Electronics; Jan2022, Vol. 33 Issue 3, p1529-1541, 13p
- Publication Year :
- 2022
-
Abstract
- We report the fabrication of Interdigitated Electrode-based thin film Zinc oxide sensor to study volatile organic compounds (VOCs) like 1-butanol, ethanol, acetone, xylene and toluene. The VOC sensing studies were carried out at 50 ppm level and results showed the highest relative response of 28.6% towards 1-butanol at RT (27 °C). Surface characterization of the ZnO structure using XRD, FESEM, EDAX and AFM is discussed which showed uniform hexagonal disc-like structure of ZnO, in hexagonal wurtzite phase of highly crystalline nature. UV–visible spectra showed a maximum absorbance at 360 nm and band gap energy of 3.03 eV (Tauc's plot). ZnO sensor showed good sensitivity for 1-butanol VOC and hence the sensor is tested towards 1-butanol in a custom designed, portable gas chamber with cost-effective instrumentation circuit. It is observed that the sensing results in gas chamber closely matched with that obtained through Keithley instrument. A cost-effective, portable, VOC sensing system can be realized. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09574522
- Volume :
- 33
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science: Materials in Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 155105859
- Full Text :
- https://doi.org/10.1007/s10854-021-07664-x