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Nanocrystalline SnO 2  thin films were successfully prepared using sol-gel dip coating technique. The starting precursor was used as tin chloride dihydrate (SnCl 2 .2H 2 O), ethanol and glycerin. As the prepared films were fired at 500 o C. These films were characterized using XRD, FE-SEM and TEM to known crystal structure, surface morphology and microstructure property. Elemental composition was studied using energy dispersive spectrophotometer (EDAX). The H 2  gas sensing performance of nanocrystalline SnO 2  thin films were investigated and presented. It was found that the nanocrystalline SnO 2  thin films gives maximum gas response (S= 360) at 75  o C. The sensor shows fast speed of response (TResponse = 2 s) and quick recover (Trecover = 8 s).

Synthesis, Characterization And Gas Sensing Performance Of Sol-Gel Prepared Nanocrystalline Sno2 Thin Films

Synthesis, Characterization And Gas Sensing Performance Of Sol-Gel Prepared Nanocrystalline Sno₂ Thin Films