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http://dx.doi.org/10.5762/KAIS.2017.18.10.771

Dependence of Surface Morphology of Transparent Hydrophobic Anti-Reflective Coating  

Kim, Ki-Chul (Department of Advanced Chemical Engineering, Mokwon University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.18, no.10, 2017 , pp. 771-776 More about this Journal
Abstract
The cover glass of mobile displays and photovoltaic cells needs a functional coating, such as an anti-reflection and self-cleaning coating. Numerous studies have been conducted on the engineering application of biomimetic functional surfaces, such as moth eye and lotus leaf Anti-reflection coantings of silica nanoparticles could enhance the light transmittance. $TiO_2$ photocatalyst coatings have been applied to self-cleaning functional films. In this study, transparent hydrophobic anti-reflective coatings consisting of thin layers of $SiO_2/TiO_2$ nanoparticles were fabricated on a slide glass substrate by the sol-gel process and dip-coating process. The dependence of the surface morphology of the functional coatings was investigated by the atomic force microscopy (AFM), contact angle measurement, and UV-visible spectroscopy. It was found that the coating of $TiO_2$ nanoparticles exhibited a high average transmittance comparable to that of the bare slide glass substrate in the visible light range. The bi-layered functional coating of 7 nm $SiO_2$/7nm $TiO_2$ nanoparticles exhibits a transparent hydrophobic surface with a contact angle of $110^{\circ}$ and an improvement of the average transmittance of 2.3% compared to the bare slide glass substrate in the visible light range.
Keywords
anti-reflection; hydrophobic; self-cleaning; surface morphology; transparent;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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