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J. Korean Ceram. Soc. > Volume 32(1); 1995 > Article
Journal of the Korean Ceramic Society 1995;32(1): 57.
졸겔법에 의한 알루미나 박막의 제조 및 특성 (III) 저반사 코팅유리의 제조
이재호, 최세영
연세대학교 세라믹공학과
Preparation and Characterization of Alumina Thin Film by Sol-Gel Method (III) Preparation of Anti-Reflective Coating Glass
The coating condition of reproducible anti-reflective coating film and the light transmittance characteristics of the prepared anti-reflective coating glass were investigated as a study for the preparation of single-layer anti-reflective coating glasss. In case of coating with the sol in which the solvent was substituted with the ethanol with the addition of 0.1 mol HNO3, the coated glass showed the minimum value of the refractive index of 1.464, light transmittance of 94.2% at 550nm standard wavelength which is 3.2% higher than that of the parent glass, and the reflectance in the entire wave range of visible light. The refractive index represented its minimum at the sol concentration of 1.0 mol per 100mols of water and the higher the sol concentration, the higher the refractive index, resulting in the decrease of the light transmitance. The production condition of the reproducible anti-reflective coating on glass with the maximum transmittance of 94.2% was 4cm/min of withdrawal speed, 40$0^{circ}C$ and 1 hour of heat treatment temperature and time, resulting in the film thickness of 94nm.
Key words: Anti-reflective coating, Sol-gel, Withdrawal speed, Refractive index, Transmittance
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