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http://dx.doi.org/10.6111/JKCGCT.2013.23.5.230

Fabrication of ATO thin film for IR-cut off by sol-gel method  

Kim, Jin-Ho (Korea Institute of Ceramic Engineering and Technology, Optic & Display Material Team)
Lee, Kwang-Hee (DO Co., Ltd.)
Lee, Mi-Jai (Korea Institute of Ceramic Engineering and Technology, Optic & Display Material Team)
Hwang, Jonghee (Korea Institute of Ceramic Engineering and Technology, Optic & Display Material Team)
Lim, Tae-Young (Korea Institute of Ceramic Engineering and Technology, Optic & Display Material Team)
Abstract
IR cut-off thin films consisted of ATO nanoparticles were successfully fabricated by sol-gel method. The coating solution was synthesized with organic/inorganic hybrid binder and ATO colloidal solution and ATO thin films were coated on a slide glass with the withdrawal speed of 5~40 mm/s. As the withdrawal speed increased from 5 mm/s to 40 mm/s, the thickness of coating thin films also increased from $1.05{\mu}m$ to $4.25{\mu}m$ and the IR cut-off in wavelength of 780~2500 nm increased from 49.5 % to 66.7 %. In addition, the pencil hardness of ATO thin films dried at $80^{\circ}C$ was ca. 5H and the coating films were not removed after a cross cutter tape test because of the hybrid binder synthesized with tetraethylorthosilicate and methyltrimethoxysilane. The surface morphologies, optical properties and film thickness of prepared thin films with a different withdrawal speed were measured by field emission scanning electron microscope (FE-SEM), UV-Vis spectrophotometer, and Dektak.
Keywords
IR-cut off; Thin film; Coating; Transmittance; Sol-gel;
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Times Cited By KSCI : 1  (Citation Analysis)
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