Structural and Optical Constants of Fe-doped SnO2 Thin Film


Tin oxide and Fe-doped tin oxide have been prepared using chemical spray pyrolysis. XRD analysis reveals that all the films are polycrystalline with tetragonal structure. The average grain size is found to decrease from 51Ǻ to 40Ǻ due to Fe-doping. Absorbance and transmittance are recorded in order to calculate kind of transition and optical constants. It is found that optical energy gap decrease after doping and all the optical constants are affected by Fe-doping.