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KMID : 1159320190210020161
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Korean Journal of Vision Science
2019 Volume.21 No. 2 p.161 ~ p.166
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A Study of Characteristic and Preparation of TiO2, BaTiO3 Thin Film by Sol-gel Method
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Kim Ha-Rim
Jeong Ju-Hyun
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Abstract
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Purpose : In this study, TiO2, BaTiO3 thin films were prepared from metal naphthenates by sol-gel and the properties of the films have been studied. High resolution X-ray diffraction, field emission scanning electron microscope and UV spectrophotometer were used to analyze film’s property.
Methods : The precursor sol was spin-coated onto the soda-lime-silica glass at 1500 rpm for 10 sec. Prefired films were finally annealed at 500℃ for 30 min in air. The crystal structure and crystallinity of the films were investigated by High Resolution X-ray diffraction system. Surface character of the annealed film was evaluated by field emission scanning electron microscope and scanning probe microscope. The transmittances in the UV(200-380 nm), visible(380-750 nm) and NIR(750-900 nm) range was measured by UV visible NIR spectrophotometer.
Results : The TiO2 films was crystallized into anatase and BaTiO3 film has not been identified for its peak. The transmittances at visible wavelength range for TiO2, BaTiO3 film was 80% or more, BaTiO3 film had higher UV and blue light blocking than TiO2 film.
Conclusion : BaTiO3 film had a higher blocking rate of ultraviolet and blue light than TiO2 film, and the visible light transmission rate was measured at more than 80% from all Film.
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KEYWORD
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Blue light, Sol-gel, Spin coating, Transmittance
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