Experimental investigation on deposition reduction of different types of dust on solar PV cells by self-cleaning coatings

Lu, Hao; Cai, Rong-Rong; Zhang, Li‐Zhi; Lü, Lin; Zhang, Longfei

doi:10.1016/j.solener.2020.06.012

Cited by 79 publications

(26 citation statements)

References 31 publications

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“…10−12 To develop an optimized AR layer, the film has to satisfy the destructive interference conditions for light waves reflected from the glass/ coating and coating/air surfaces. 8,9 However, control of the coating thickness "t" plays a central role in developing such films as it has to be one-fourth of the incident spectrum wavelength (λ/4 × n ARC ) for an optimized AR property. Additionally, the refractive index n ARC of the AR layers should be (n S × n A ) 1/2 , where n S is the refractive index of the substrate and n a is the refractive index of air.…”

Section: Introductionsupporting

confidence: 80%

Hydrophilic Antireflection and Antidust Silica Coatings

et al. 2021

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We report on the optical and morphological properties of silica thin layers deposited by reactive RF magnetron sputtering of a SiO 2 target under different oxygen to total flow ratios [r(O 2 ) = O 2 /Ar, ranging from 0 to 25%]. The refractive index (n), extinction coefficient, total transmission, and total reflectance were systematically investigated, while field-emission scanning electron microscopy, atomic force microscopy, and threedimensional (3D) average roughness data construction measurements were carried out to probe the surface morphology. Contact angle measurements were performed to assess the hydrophilicity of our coatings as a function of the oxygen content. We performed a thorough numerical analysis using 1D-solar cell capacitance simulator (SCAPS-1D) based on the measured experimental optical properties to simulate the photovoltaic (PV) device performance, where a clear improvement in the photoconversion efficiency from 25 to 26.5% was clearly observed with respect to r(O 2 ). Finally, a computational analysis using OptiLayer confirmed a minimum total reflectance of less than 0.4% by coupling a silica layer with n = 1.415 with another high-refractive-index (i.e., >2) oxide layer. These promising results pave the way for optimization of silica thin films as efficient antireflection and self-cleaning coatings to display better PV performance in a variety of locations including a desert environment.

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Section: Introductionsupporting

confidence: 80%

Hydrophilic Antireflection and Antidust Silica Coatings

et al. 2021

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“…But the degradation amount of power output and efficiency of superhydrophobic coated PV solar modules are more petite than bare PV solar modules. The super-hydrophobic coating decreases the accumulation rate of dust since have low micro-Nano surface structures and low surface energy [25]. Therefore, super-hydrophobic coating with micro-Nanoparticles is the best technique to reduce dust accumulation on PV solar panels.…”

Section: Automatic/self-cleaning Techniquesmentioning

confidence: 99%

“…If the efficiency is low, the desired PV solar module must be high to fit the wanted power output; this made the PV solar module cost high and need a prominent place to install. Therefore, many investigations and developments were conducted on PV solar energy generation, applications, and performance, even though the area still needs further research and continuous improvements [23][24][25][26]. This article aims to review recent literature on the improvement of the power output and performance of the generating PV solar energy, to analyze different techniques applied to enhance PV solar energy efficiency and research and development (R and D) information.…”

Section: Introductionmentioning

confidence: 99%

Recent Improvements of the PV Solar Energy Generation Performance

Takiso¹,

Manbecho²

2021

IJRTE

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PV solar energy is the upcoming king of the energy source in the world, which is the fastest growing, most available, sustainable, clean, and environmentally friendly renewable energy. The essential characteristic of PV solar energy is generating the maximum power at mid-day. At the same time, the energy demand is high during the daytime. Due to this, PV solar energy replaces the conventional energy demand at peak periods. The sun is the source of PV solar energy, and it changed into electricity directly by using solar cells, which are made from semiconductor materials called silicon. Therefore, PV solar energy plays a crucial role in providing usable energy, and as well as reducing carbon dioxide emissions. However, the solar energy generation systems not achieved the desired efficiency yet, because of many unsolved problems like weather conditions, losses, materials made by and so on. The aims of this paper is to review the current literature on the improvement of the PV solar energy generation system's overall performance. First, to figure out the existing challenges, like environmental factors and natural phenomena that affect the PV solar modules efficiency. Then it presents the techniques that are used to enhance the PV solar modules overall performance. Finally, to propose the best ways and techniques to improve the PV modules efficiency and suggest to further studies.

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“…-self-cleaning [11]; -frost-resistant [12]; -anti-friction [13]; -electrically conductive [14]; -oil-sorbing [15]. In the case of using organomineral dispersions for the formation of textured surfaces based on thin-layer coatings, fillers are the main means of forming the relief.…”

Section: Introductionmentioning

confidence: 99%

Formation of effective concentration of film forming superhydrophobic coatings based on silicon dioxide

Sivolapov

Myronyuk

Baklan

et al. 2021

TAPR

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The object of research is the hydrophobization of a coating based on styrene-acrylic copolymer and cellulose acetate butyrate with pyrogenic silicon dioxide. The hydrophobicity or hydrophilicity of a surface depends mainly on the chemical structure of the surface and its roughness. A relief hydrophilic surface will be wetted much more easily than a flat surface of the same material, and vice versa – an increase in the roughness of a hydrophobe is accompanied by a more pronounced repulsion of water. The size and number of irregularities significantly affect the wetting characteristics of the investigated surface. The combination of low surface energy and relief structure forms a superhydrophobic surface. Such surfaces have found application in self-cleaning, frost-resistant, antifriction, electrically conductive and oil-sorbing coatings. In this work, styrene-acrylic copolymer and cellulose acetate butyrate were used as a film former. Pyrogenic silicon dioxide Aerosil R 972, which was hydrophobized with dimethyldichlorosilane, was used as a nanofiller. In this work, the compositions were applied to laboratory glasses by dip coating. The determination of surface energy was carried out using glycerin and diiodomethane. The hydrophobic properties of the coatings were evaluated by measuring the contact angles with water using a goniometer. The analysis of the morphological structure of the coating surface with photographs of a scanning electron microscope has been carried out. The energy state of the surface of the created superhydrophobic coatings has been determined and their surface energies have been calculated using the technique based on the Owens-Wendt model. The process of hydrophobization of polymer-based coatings is investigated, which occurs both due to chemical modification with the introduction of silicon dioxide and due to the creation of nanoroughness of the surface layer of the coatings. The dependences of this process on materials are investigated using an electron microscope and the determination of their surface energy depending on the SiO2 filling. The values of the critical concentration of the modifier for the transition of polymers to the superhydrophobic state have been determined. As a result, the influence of polymer crystallinity on hydrophobization was determined by comparing changes in the surface energy of materials during their modification.

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Experimental investigation on deposition reduction of different types of dust on solar PV cells by self-cleaning coatings

Cited by 79 publications

References 31 publications

Hydrophilic Antireflection and Antidust Silica Coatings

Hydrophilic Antireflection and Antidust Silica Coatings

Recent Improvements of the PV Solar Energy Generation Performance

Formation of effective concentration of film forming superhydrophobic coatings based on silicon dioxide

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