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Article

Characteristics of Functional Film Synthesized on the Cover Glass of Photovoltaic Modules

1
Department of Electrical Engineering, Hanbat National University, Daejeon 34158, Korea
2
Department of Electrical System Engineering, Hanbat National University, Daejeon 34158, Korea
3
Department of Advanced Materials Science and Engineering, Hanbat National University, Daejeon 34158, Korea
4
Department of Electronics Engineering, Hanbat National University, Daejeon 34158, Korea
*
Author to whom correspondence should be addressed.
Both authors contributed equally to this work.
Academic Editors: Venizelos Efthymiou and Christina N. Papadimitriou
Energies 2021, 14(20), 6671; https://doi.org/10.3390/en14206671
Received: 4 September 2021 / Revised: 12 October 2021 / Accepted: 12 October 2021 / Published: 14 October 2021
(This article belongs to the Special Issue Smart Photovoltaic Energy Systems for a Sustainable Future Ⅱ)
In this study, the characteristics of functional films were investigated according to the number of coatings and their heat treatment times. The functional coating films were deposited on glass substrates made of the same material as the cover glass of photovoltaic (PV) modules. Each film was coated once by brushing with a special silica-based solution, and each heat treatment was done using a hot-air fan for 2 min at 300 °C. The substrates were coated once, twice, and thrice, respectively, and were annealed once, twice, and thrice by drying and cooling alternately. The specimens were then analyzed for their anti-pollution properties, contact angles, light transmittance, and mechanical properties. The anti-pollution function was confirmed through a self-cleaning test, while the contact angle and light transmittance were examined using special equipment. Mechanical properties, including hardness and adhesion, were confirmed using the standard hardness testing method (ASTM D3363) such as those using an H-9H, F, HB, or B-6B pencil (Mitsubishi, Japan) and a standard adhesion testing method (ASTM D3359). It was confirmed that the film coated once yielded a very low contact angle of 8.9° and very good anti-pollution properties. Its adhesion and strength also showed high values of 5B and 9H, respectively. View Full-Text
Keywords: functional film; anti-pollution; bar coating; hot-air annealing; photovoltaics module functional film; anti-pollution; bar coating; hot-air annealing; photovoltaics module
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MDPI and ACS Style

Yoo, S.; Lee, C.; Lee, S.; Kim, C.; Choi, W.; Park, Y.; Kim, J.H.; Joung, Y.-H. Characteristics of Functional Film Synthesized on the Cover Glass of Photovoltaic Modules. Energies 2021, 14, 6671. https://doi.org/10.3390/en14206671

AMA Style

Yoo S, Lee C, Lee S, Kim C, Choi W, Park Y, Kim JH, Joung Y-H. Characteristics of Functional Film Synthesized on the Cover Glass of Photovoltaic Modules. Energies. 2021; 14(20):6671. https://doi.org/10.3390/en14206671

Chicago/Turabian Style

Yoo, Seungcheol, Changyeon Lee, Seokwon Lee, Chulsoo Kim, Wonseok Choi, Young Park, Jung H. Kim, and Yeon-Ho Joung. 2021. "Characteristics of Functional Film Synthesized on the Cover Glass of Photovoltaic Modules" Energies 14, no. 20: 6671. https://doi.org/10.3390/en14206671

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