Abstract
Pure and Barium substituted bismuth ferrite thin films are developed on glass substrate via spray pyrolysis technique. The outcome of barium substitution to bismuth ferrite for the ethanol gas detecting capability is carried out in this study. The Energy Dispersive X-Ray (EDS) results confirmed the occurrence of Barium, Bismuth and Ferrous in the developed thin film. The X-Ray Diffraction (XRD) results confirmed the perovskite structure of the bismuth ferrite thin film. The modification of the surface roughness and particle sizes are seen in the developed thin film from the results of Atomic Force Microscopy (AFM) and Field Emission Scanning Electron Microscopy (FESEM). The gas sensing characterization carried out on the developed thin films disclose that, it is more selective to ethanol gas. It is found that operating temperature at which the gas is detected, reduced with barium substitution. The results obtained from the characterization study confirm that the developed thin films can be used for ethanol gas sensing applications.
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