Study the effect fe doped tin oxide for gas sensing applications
Keywords:
Tin oxide, Spray pyrolysis, SEM, Doping, Optical PropertiesAbstract
Nanocrystalline transparent conductive tin dioxide (SnO2) and Fe doped SnO2 films were prepared by the chemical spray pyrolysis technique (CSPT). X-ray diffraction (XRD) pattern shows that the SnO2 films are polycrystalline of tetragonal structure with the preferential orientation of (110) direction and intensity decreases with increasing Fe doping. The results of the film morphology study by SEM show that the films contain nanoparticles with different size distributed on the film. The study of the optical properties reveals that SnO2 films have high transmittance in the visible region and decrease with Fe doping. The optical energy gaps of the SnO2 thin films decrease slightly from 3.87 eV to 3.63 eV due to the increase in Fe doping.
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