Abstract
Gas sensing response studies of the Ni7+ ion irradiated (100MeV) and non-irradiated SnO2 thin film sensor prepared under same conditions have been performed towards SO2 gas (500ppm). The effect of irradiation on the structural, surface morphological, optical and gas sensing properties of SnO2 thin film based sensor have been studied. A significant decrease in operating temperature (from 220°C to 60°C) and increased sensing response (from 1.3 to 5.0) is observed for the sample after irradiation. The enhanced sensing response obtained for the irradiated SnO2 thin film based sensor is attributed to the desired modification in the surface morphology and material properties of SnO2 thin film by Ni7+ ions.
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