Simple preparation of high transparent tin dioxide thin films by spin coating method: Effect of sol concertation

Successful simple preparation of nanocrystalline SnO
2
films was performed by the Sol-Gel spin coating method in an alcoholic medium without any complexing agent. The precursor concentration effect on structural, optical and electrical properties was examined. The X-ray Diffraction (XRD) characterization shows the formation of single tetragonal rutile phase with (110) plan as preferential orientation. Excellent high transmittance greater than 97% in visible was measured by Ultraviolet-visible spectroscopy (UV-Vis). The presence of the interference fringes reflects that the obtained films are thick enough. The results reveal that increasing in precursor concentration leads peak intensity (110), particle size, film thickness and absorbance to increase as well. While the optical transmittance decrease when increasing the precursor concentration.