Long-Term Reliability Evaluation of Silica-Based Coating with Antireflection Effect for Photovoltaic Modules

Nishioka, Kensuke; Moe, So Pyay; Ota, Yasuyuki

doi:10.3390/coatings9010049

Cited by 8 publications

(9 citation statements)

References 21 publications

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“…Though surface coatings have been developed as anti-dust coatings, standard aging tests have not been performed yet. Many companies have developed a solution to include both anti-dust and anti-reflection coatings, which eventually improves the performance by 3% through better light management [ 56 , 57 ]. There has been a significant amount of effort to develop a functionalized surface layer as an anti-dust coating.…”

Section: Anti-dust Coatingmentioning

confidence: 99%

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Anti-Soiling Coatings for Enhancement of PV Panel Performance in Desert Environment: A Critical Review and Market Overview

Hossain

Ali²,

Benito³

et al. 2022

Materials

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Areas with abundant sunlight, such as the Middle East and North Africa (MENA), are optimal for photovoltaic (PV) power generation. However, the average power loss of photovoltaic modules caused by dust accumulation is extreme and may reach 1%/day, necessitating frequent cleaning which adds to the cost of operations and maintenance. One of the solutions to the problem of PV soiling is to develop anti-soil coatings, where hydrophilic or hydrophobic coatings with spectral characteristics suitable for PV applications are added to the outer layer of PV glass. However, the effectiveness of such coatings depends extensively on climatic conditions and geographical locations. Since coatings add to the cost of solar panels, it is imperative that they are first tested for suitability at the intended location and/or in similar weather conditions prior to their large-scale deployment. This critical review focuses on various anti-dust technologies employed to mitigate the PV soiling issue. The in-depth comparison of the various developed techniques and materials aims at providing a relevant input in adapting the right technology based on particles’ accumulation mechanism, weather conditions, and geographical location. Though the mechanical cleaning process is the most used solution to date, development of thin film anti-dust coating could be a better alternative—when it is relevant—due to its abrasion-free capability, large deployment, economic viability, and durability. This review aims at serving as a reference in this topic, thereby paving the way to adapting efficient anti-dust coatings, especially in the MENA region and/or desert environment at large, where it is the most relevant.

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Section: Anti-dust Coatingmentioning

confidence: 99%

“…There has been a significant amount of effort to develop a functionalized surface layer as an anti-dust coating. Further investigations are in progress to understand the durability of such layers from the economical perspective under various conditions [ 56 , 57 ].…”

Section: Anti-dust Coatingmentioning

confidence: 99%

Anti-Soiling Coatings for Enhancement of PV Panel Performance in Desert Environment: A Critical Review and Market Overview

Hossain

Ali²,

Benito³

et al. 2022

Materials

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“…In cases where the condition in Equation 4is true, the combination of Equations (2) and 4gives a further simplified representation of phase angle; that is, cosδ = −1. The optimal antireflection condition is achieved when Equation 4is fulfilled and R 1 becomes equal to R 2 .…”

Section: Optical Modeling Of the Coatingmentioning

confidence: 99%

“…A significant uptick has been noticed in the research on self-cleaning and antireflective coatings in recent decades. Their application is widespread, including photovoltaic solar panels, lasers, automobiles, optical instruments, and solar collectors [1][2][3][4][5], among others. Additionally, self-cleaning coatings play a major role in the design of photodetectors, sensors, and membrane technology [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Antireflection, Superhydrophilic Nano-Porous SiO2 Coating based on Aerosol Impact Spray Deposition Technique for Solar PV Module

et al. 2019

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In this research, silica nano-particles are deposited over the borosilicate glass and silicon wafer substrates by indigenously developed Aerosol impact deposition assembly using SiH4, oxygen, and helium as precursors. The coating process involves deionization of gases leading towards nucleation sites for silica in the presence of plasma, while tuning the pressure difference between reaction and deposition chamber controls the coating thickness, porosity, and refractive index. The deposited coating layer on the substrate enhanced the transmittance to 99.6% at 600 nm wavelength. The induced porous nature and the graded index of the coated layer as observed from the AFM and SEM resulted in superhydrophilic behavior with a water contact angle of near to 0°. The super-hydrophilicity of the coating contains self-cleaning properties, suggesting an improvement of the performance of solar PV modules as well.

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“…Said et al [11] presented a review of the effect of climatic conditions on the performance of PV modules, particularly the soiling issue, where they reviewed the past, current, and future approaches for mitigating the effect of dust in that regard. Many other studies in that regard can be found examining self-cleaning coating solutions and their durability (passive dust mitigation techniques) and mechanical cleaning as well (active dust mitigation techniques) [12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Soiling of Photovoltaic Modules: Comparing between Two Distinct Locations within the Framework of Developing the Photovoltaic Soiling Index (PVSI)

Alquthami

Menoufi

2019

Sustainability

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This article evaluates the impact of dust accumulation on the performance of photovoltaic (PV) modules in two different locations inside Egypt, Cairo and Beni-Suef. Two identical PV modules were used for that purpose, where each module was exposed to the outdoor environment in order to collect dust naturally for a period of three weeks, each in its corresponding location. The approximate dust density on each of the two PV modules was estimated. Moreover, the electrical performance was evaluated and compared under the same indoor testing conditions. The results show a better electrical performance and less dust density for the PV module located in Cairo compared to that located in Beni-Suef. The results further provide an indication for the impact of soling in different locations within the same country through a clear and simple procedure. In addition, it paves the way for establishing a Photovoltaic Soiling Index (PVSI) in terms of a Photovoltaic Dust Coefficient, as well as a Photovoltaic Dust Interactive Map. The product of such concepts could be used by the Photovoltaic systems designers everywhere in order to estimate the impact of dust on the future performance of PV modules in small and large installations in different regions around the globe, and during different times of the year as well.

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Long-Term Reliability Evaluation of Silica-Based Coating with Antireflection Effect for Photovoltaic Modules

Cited by 8 publications

References 21 publications

Anti-Soiling Coatings for Enhancement of PV Panel Performance in Desert Environment: A Critical Review and Market Overview

Anti-Soiling Coatings for Enhancement of PV Panel Performance in Desert Environment: A Critical Review and Market Overview

Antireflection, Superhydrophilic Nano-Porous SiO2 Coating based on Aerosol Impact Spray Deposition Technique for Solar PV Module

Soiling of Photovoltaic Modules: Comparing between Two Distinct Locations within the Framework of Developing the Photovoltaic Soiling Index (PVSI)

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