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1 2014

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Electrical and optical properties of spin-coated SnO2 nanofilms

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Izydorczyk W. , Waczynski K. , Izydorczyk J. , Karasinski P. , Mazurkiewicz J. , Magnuski M. , Uljanow J. , Waczynska-Niemiec N. , Filipowski W.

Materials Science Poland

2014

tom Vol. 32, No. 4

729--736

SnO2 nanocrystalline thin films have been deposited on oxidized silicon substrates by spin-coating from a precursor solution, followed by slow thermal annealing in oxygen atmosphere at different temperatures (500 to 900 °C). The precursor solution consisted of 1.0 to 2.0 M SnCl4•5H2O in isopropanol. It was shown that the concentration of the precursor solution, annealing temperature and heating rate had a significant effect on the structural, optical and electrical properties of the studied thin films. The topography of SnO2 thin films was examined by scanning electron microscopy (SEM). Furthermore, as-deposited films were characterized by X-ray diffraction (XRD), UV-Vis and impedance spectroscopy.