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Vol.58, No.3, 201 ~ 207, 2020
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| Title |
| Synthesis of MgF2 Nanoparticles for Improved Anti-Reflective Coating |
| 송병관 Byung-kwan Song , 정재용 Jae-yong Jung , 조영래 Young-rae Cho , 나종주 Jong-joo Rha , 김정완 Jeong Wan Kim , 김영국 Young-kuk Kim |
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| Abstract |
| Anti-reflective (AR) coatings are popular because they offer high durability with effective reflectance and glare reduction, and they can endure both physical and environmental damage. Magnesium fluoride (MgF2) has been used as a nanoparticle coating on AR coating materials by many researchers because they exhibit high transmittance and antireflection characteristics in the visible region, due to its low refractive index. When using MgF2 nanoparticles on a coated AR film, however, a binder is needed to improve abrasion resistance because the binding strength between particles is weak. In this study, AR coating films were prepared by adding MgTFA as a precursor to improve the adhesion resistance of the AR coating films. The AR coating films were characterized by UV-Vis, XRD, TEM, as well as viscosity and abrasion tests. The binder added to MgF2 to improve the bonding strength between the particles showed excellent durability. The MgF2 with added binder had a stronger film strength than a binderless MgF2 film, even at low drying temperatures. It also exhibited lower reflectance. These characteristics are expected to be valuable for camera lenses, for thin films that require high light extraction efficiency, and in anti-reflection films on solar cell surfaces.
(Received December 9, 2019; Accepted January 7, 2020) |
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| Key Words |
| anti-reflective, coatings, MgF2, binder, thin film |
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