Preparation of highly transparent conducting fluorine doped tin oxide glass
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Date
2014
Authors
Kulathunga, K. I. I. B.
Journal Title
Journal ISSN
Volume Title
Publisher
University of Peradeniya
Abstract
Fluorine doped tin oxide glass (FTO) has been prepared from ammonium fluoride and stannous chloride by hand spray pyrolysis deposition method. Resistance and optical transmittance of fluorine doped tin oxide glasses have been investigated. The optimum NH₄F wt. % for fluorine doping, to obtain the minimum resistance for fluorine doped tin oxide glass was determined by varying the amount of ammonium fluoride added to stannous chloride solution. The substrate temperature and the volume of the solution sprayed were varied to optimize the electrical and optical properties of the FTO glass. The optimum NH₄F wt. % for fluorine doping was observed at approximately 11 wt. % of ammonium fluoride doping. The lowest resistance was observed for glass plates (FTO glass C₁₂₀) sprayed with 120 ml of 0.106 M stannous chloride solution containing 0.36 g of ammonium fluoride, corresponding to at 11 wt. % of ammonium fluoride doping. For FTO glass C₁₂₀, average resistance of 63.6 Ω was observed. Transmittance values of 78.8%, 83.6% and 87.8% were observed, respectively, at wavelengths of 459.5 nm, 554.0 nm and 715.0 nm, in the visible region. Accordingly, in the visible range , FTO glass C₁₂₀ has better optical transmittance than commercially available FTO glass.
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Keywords
Fluorine doped tin oxide glass , FTO