P10.3 - Low Temperature Ethanol Sensors using Cerium doped Tin oxide Nanostructures
- AMA Conferences 2015
2015-05-19 - 2015-05-21
- Proceedings SENSOR 2015
- P10 - Applications
- A. Johari, M. Bhatnagar - IIT Delhi, Hauz Khas New Delhi (India)
- 873 - 877
Volatile organic compound (VOC) vapors are the primary sources of environmental pollutants in houses and workplaces and there is need to develop low temperature, sensitive and selective gas sensors to monitor the gas content. In this paper, we have discussed the effect of cerium (Ce) doping in SnO2 nanostructures on the structural and gas sensing properties. The nanostructures have been synthesized by thermal evaporation process. The structural and surface morphology studies confirm the growth of nanowires on silicon substrates. High resolution transmission electron microscopy analysis confirms the growth of uniform and well crystallized nanowires. The corresponding EDX spectra also confirm the doping of Ce into SnO2 nanowires. The gas sensor response of Cedoped SnO2 nanowires was investigated upon exposure to ethanol and other gases. It was observed that doping of Ce enhances the ethanol sensitivity of nanowire based sensors at low temperature and the sensor response improves with increase in ethanol concentration.