Self-cleaning V-TiO2:SiO2 thin-film coatings with enhanced transmission for solar glass cover and related applications

Adak, Deepanjana; Ghosh, S. K.; Chakrabarty, Poulomi; Mondal, Anup; Saha, Hiranmay; Mukherjee, Rabibrata; Bhattacharyya, R.

doi:10.1016/j.solener.2017.06.014

Cited by 52 publications

(25 citation statements)

References 38 publications

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“…The TiO2 solution prepared was mixed with SiO2 and coated with the spin coating method. With only TiO2 applying, the reflection index of 2.71 was reduced to 1.37 by using 15% SiO2 mixed [28]. In a study on the protective outer layer of the CdTe thin film solar cell, a multi-layer coating method was preferred.…”

Section: Research and Methodsmentioning

confidence: 99%

Researches on Anti-reflection Coating (ARC) Methods Used in PV Systems

Ekren¹

2018

Balkan Journal of Electrical and Computer Engineering

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With the development of PV systems' technology over the years and the reduction of production costs, PV systems are now being used for electricity generation. PV systems are listed among the renewable energy sources as the only requirement is solar energy and electricity generation is carried out without any fuel and waste. Solar cells used in PV systems are adversely affected by extremes of temperature, shading, reflection, and pollution. It is known that before sunrays reach the cell's surface, some of them disappears from the protective glass surface and are reflected back from the cell through the glass surface. Antireflection coatings (ARC) are used to reduce the energy loss and increase solar cell efficiency and output power. SiO2 and MgF2 are the most commonly used solutions among these coatings. It has been seen that the most efficient applications, with anti-reflection coatings as single, double, triple and more layers, are in triple layers applications. It has been observed that applications to the protective glass surface have self-cleaning properties, and TiO2 and ZrO2 are frequently used for this. The reflectance index of the protective glass, which is normally 1.51, can be reduced to 1.20 in silicone cells and 1.28 in thin film surfaces with the AR coatings.

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Section: Research and Methodsmentioning

confidence: 99%

Researches on Anti-reflection Coating (ARC) Methods Used in PV Systems

Ekren¹

2018

Balkan Journal of Electrical and Computer Engineering

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“…According to the authors [32], these films can be used in several indoor applications. Adak et al [33] developed transparent films of TiO 2 doped with vanadium and silicon dioxide (V-TiO 2 /SiO 2 ) on glass by spin-coating. The films exhibited antireflection property, superhydrophilicity, and photocatalytic activity in the degradation of methylene blue under visible light.…”

Section: Materials and Techniques For The Production Of Selfcleaning mentioning

confidence: 99%

“…After treatment with O 2 plasma, for all V-TiO 2 /SiO 2 compositions analyzed, the contact angles of water were approximately 0°. According to the authors [33], the properties of the coating obtained are suitable for architectural glass and photovoltaic (PV) module with high solar energy conversion efficiency. Katsumata et al [34] used niobia nanosheets ([Nb 3 O 8 ] -) and sodium ions to obtain sodium niobate (NaNbO 3 ) and, from this material, prepared NaNbO 3 films as self-cleaning glass for vehicles.…”

Section: Materials and Techniques For The Production Of Selfcleaning mentioning

confidence: 99%

“…In some studies, the obtained surface showed photocatalytic activity and photoinduced hydrophilicity [32,45]. However, among the studies, the hydrophilicity of non-irradiated surfaces was also reported [33,35]. Antifogging capability is another important parameter in self-cleaning surfaces, as reported in [38,42].…”

Section: Materials and Techniques For The Production Of Selfcleaning mentioning

confidence: 99%

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Systems developed for application as self-cleaning surfaces and/or antimicrobial properties: a short review on materials and production methods

et al. 2019

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Herein we present a short review of different materials and techniques that have been used for the production of surfaces with self-cleaning and/or antimicrobial properties. From this, it was verified that titanium dioxide was the most frequently used compound to obtain surfaces with these properties; however, other materials such as silica, zinc and silver have also been used for this purpose. The spin-coating and dip-coating techniques were the most used techniques, and the bacteria Staphylococcus aureus and Escherichia coli were the most used in the antimicrobial assays. The analyzed studies showed that it is possible to obtain surfaces with both self-cleaning and/or antimicrobial properties, as well as with photocatalytic activity. Regarding possible applications, it is possible to highlight the interest in the production of glass and medical devices with self-cleaning and/or antimicrobial action.

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“…[20] The band at 1635 cm À 1 is presumably due to the bending vibrations of hydroxyl groups, resulting from adsorbed OH groups at the surface of the coating. [21,22] FTIR was used to confirm the existence of Ti-OÀ Si, Si-OÀ Si and Ti-OÀ Ti bonds in the nanocomposite structure. The bands observed between 500 and 900 cm À 1 can be attributed to TiÀ O and Ti-OÀ Ti groups of TiO 2 component.…”

Section: Introductionmentioning

confidence: 99%

Transparent and Self‐Cleaning Surfaces Based on Nanocomposite Sol‐Gel Coatings

et al. 2020

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In this study, transparent anti‐fogging and self‐cleaning nanocomposite coatings based on sponge‐like TiO2−SiO2 nanoparticles on glass substrate were prepared through the sol‐gel process, by using spin‐coating and spray gun techniques to coat small and large glass surfaces. The effect of annealing temperature on the morphology, wettability, UV–Vis transmittance, refractive index, thickness, photocatalytic degradation rate and the anti‐fouling effect was studied in detail. Indeed, the self‐cleaning properties of the nanocomposite coatings were evaluated as efficient by both photocatalytic degradation of orange G (OG) dye under natural sunlight irradiation and water contact angle (WCA) method under atmospheric out‐door conditions. It should be noted that the optical transmission of nanocomposite coatings remains important (85–87 %) compared to the ordinary glass (92 %) with lower haze value, which confirms their clear optical appearance. The nanocomposite coatings rendered the glass substrate hydrophilic with a WCA value that not exceeding 12° after fifteen weeks of out‐door exposure. Photocatalytic degradation rate relative to OG up to 7.9 % were achieved for the nanocomposite coating annealed at 500 °C after 8 hours of sunlight exposition. The soil attachment test reveal that nanocomposite coatings prevent the accumulation of soil particles and has an excellent anti‐fouling and anti‐fogging properties. These findings indicated that the TiO2‐SiO2 nanocomposite coatings could be a very attractive solution for many practical areas (environment, energy and building sectors) especially for outdoor applications.

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Self-cleaning V-TiO2:SiO2 thin-film coatings with enhanced transmission for solar glass cover and related applications

Cited by 52 publications

References 38 publications

Researches on Anti-reflection Coating (ARC) Methods Used in PV Systems

Researches on Anti-reflection Coating (ARC) Methods Used in PV Systems

Systems developed for application as self-cleaning surfaces and/or antimicrobial properties: a short review on materials and production methods

Transparent and Self‐Cleaning Surfaces Based on Nanocomposite Sol‐Gel Coatings

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