玻璃表面梯度多孔减反射膜层的水热制备及水刻蚀剂添加Na<sub>2</sub>HPO<sub>4</sub>对膜层结构的影响

doi:10.11896/cldb.22060210

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Abstract Gradient porous antireflection film on glass surface, as characterized by the ultra-low reflectance and high increasing transmittance of visible light, has a wide range of application prospects in photovoltaic, electronic display, automotive and other fields. Glass reacts strongly with water during hydrothermal process, resulting in difficulty forming gradient porous structural film on the surface. One of the important technical problems in the preparation of gradient porous antireflection film by hydrothermal method is how to control the etching solution to slow down the etching reaction of glass, eventually forming the surface film with gradient porous structure. In this work, gradient porous antireflection film on glass surface has been successfully prepared by a hydrothermal method, using water and Na₂HPO₄ solution as etching agents, and three commercial sodalime glasses as substrates. The etched film's microscopic morphology, element distribution, infrared spectroscopy and the glass's optical properties were analyzed. The etched film's refractive index and reflectance were simulated by Macleod and TFCalc software, respectively. The micron concave and convax surface was obtained when water etching agent was used. However, gradient porous antireflection film has been prepared when Na₂HPO₄ was added into water etching agent. The added Na₂HPO₄ contributes to slowing down etching reaction and constructing porous etched film. The best addition volume of Na₂HPO₄ demonstrates a reverse relationship with the glass's alkaline-earth metal content. The lowest reflectance R_{380—780 nm} is 0.88%, and the highest increasing transmittance ΔT_{380—780 nm} reaches 7.39%.

Key words： gradient porous film antireflection hydrothermal method sodalime glass Na₂HPO₄

Published: 25 November 2023 Online: 2023-11-21

CLC number:

TB321

Fund:Science and Technology Major Program of Fujian Province, China (2014HZ0005) and the Science and Technology Program of Xiamen University (XDHT2017415A).

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	SUN Huihui
	ZHOU Ziji
	CAO Wen
	WANG Qun
	ZHOU Zhonghua
	HUANG Yue

Cite this article:

SUN Huihui,ZHOU Ziji,CAO Wen, et al. Hydrothermal Preparation of Gradient Porous Antireflection Film on Glass Surface and the Effect of Na₂HPO₄ Added into Water Etching Agent on Film Structure[J]. Materials Reports, 2023, 37(22): 22060210-7.

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http://www.mater-rep.com/EN/10.11896/cldb.22060210 OR http://www.mater-rep.com/EN/Y2023/V37/I22/22060210

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