Graded Refractive Index Anti-Reflective Coatings for Solar Panels

Anti-reflective film layer for photovoltaic glass that combines high-performance anti-reflective properties with improved durability and environmental stability. The film comprises a main anti-reflective layer comprising nano-silica dispersion, hollow silica particles, and pore-forming agent, with a secondary anti-reflective layer comprising fluorine-containing resin, curing agent, and nano-scale inorganic particles. The film achieves enhanced anti-reflective performance while maintaining superior optical clarity and environmental resistance compared to conventional anti-reflective coatings.

Source

Coating solution composition for solar modules that prevents reflection and contamination through a novel hybrid composite material. The composition combines SiO2 and TiO2 in a specific ratio to achieve both anti-reflective and anti-soiling properties. The composition is synthesized through a room-temperature curing process and electrostatic spray coating method, enabling effective protection of solar modules in field environments without compromising their performance.

Source

A nanoscale coating for solar photovoltaic panels that enhances light transmission while maintaining hydrophobic properties. The coating employs nanoparticles with controlled hydrophobicity and surface roughness to prevent dust and organic impurities from adhering to the solar panel surface. This nanoscale coating achieves high light transmission while maintaining the panel's self-cleaning capability, enabling continuous operation without manual cleaning.

Source

A multi-layer antireflection film for improving short-wave quantum efficiency of solar cells by reducing light loss and enhancing antireflection. The film is made of sequentially stacked layers of silicon nitride, silicon oxynitride, and silicon oxide films on a substrate. This laminated structure provides a graded index profile that matches the refractive index of silicon over the visible spectrum, minimizing reflection losses compared to abrupt index transitions. The layers can be deposited using plasma-enhanced chemical vapor deposition (PECVD) techniques.

Source

A water-based coating for solar panels that minimizes reflections while maintaining dirt and dust repellency. The coating, comprising a silicon dioxide-based liquid, is applied to the solar module surface either during production or post-installation. This coating reduces light scattering and reflection while preventing dirt and dust accumulation, resulting in improved light transmission.

Source

Anti-reflection film for solar cells, specifically perovskite solar cells, that reduces light reflection and improves conversion efficiency. The film consists of two opposing layers on the cell substrate. One layer has a higher refractive index film followed by a lower refractive index film. The other layer has a lower refractive index film followed by a higher refractive index film. This multilayer stack with alternating high and low index films provides anti-reflection.

Source

A coating material for photovoltaic solar panels that combines anti-reflective and self-cleaning properties through a novel nanocomposite system. The coating comprises a matrix of polylactic acid (PLA) with titanium dioxide (TiO2) and silicon dioxide (SiO2) nanoparticles as base components. This nanocomposite system enables the coating material to exhibit both hydrophobic and photocatalytic properties, while maintaining compatibility with glass substrates. The coating achieves its self-cleaning effect through the hydrophobic interaction between the coating material and water droplets, while preventing direct sunlight reflection. This innovative coating material enables enhanced solar energy conversion while maintaining environmental sustainability.

Source

A glass article coated with aluminum oxide that combines the benefits of solar panels, photovoltaic devices, and thermal energy systems. The coating enhances optical transmission while maintaining the structural integrity of the glass substrate. The coating achieves superior light transmission across the visible and near-infrared spectrum, with maximum transmission values of 99.7% in the 700 nm range and 98% in the 1000 nm range. This coating enables efficient energy conversion through photovoltaic cells and thermal collectors, while maintaining the optical clarity of the glass substrate.

Source

A low-reflection coated glass with integrated sunlight control functionality that achieves significant reductions in visible light transmission and solar energy absorption. The coating comprises a thin antimony-doped tin dioxide layer with a thickness of 30-100 nm, sandwiched between an antireflection layer and a silicon dioxide layer. The antimony-doped tin dioxide layer achieves a refractive index of 1.65-1.72, enabling optimal light control while maintaining transparency. The coating can be prepared through a single-step process involving thermal processing at 650-660°C.

Source

Photovoltaic power generation system with selective reflective film that enhances efficiency by selectively reflecting light through a tailored optical coating. The system incorporates a selective reflective film with a Ta2O5 layer and a SiO2 layer, which enables selective transmission of light across the visible spectrum while maintaining high reflectivity in the 400-900nm range. This selective transmission enables efficient conversion of solar energy while minimizing backside radiation and heat generation.

Source

A method for enhancing solar absorption in visible and near-infrared spectral bands through the creation of a composite anti-reflection coating with a unique porous structure. The coating comprises a titanium/silica composite material with a surface featuring undulating microstructures, which enables multiple reflections and refractions of incident light. This cooperative light trapping effect significantly increases the absorption efficiency of visible and near-infrared radiation compared to conventional anti-reflection coatings.

Source

Coating for solar panels that enhances power conversion efficiency through optimized light reflection. The coating is applied between the solar panel backplane and EVA adhesive layer, incorporating a combination of silicon-acrylate resins and graphene oxide. This integrated design enables maximum utilization of solar radiation while minimizing reflectivity and refractive index variations across the panel surface. The coating achieves improved power generation efficiency through enhanced light reflection and increased light reflection efficiency, while maintaining durability and self-cleaning properties.

Source

Photovoltaic power generation system with selective reflection film that enhances energy conversion efficiency and reduces thermal losses. The system employs a reflective film with a cut-off wavelength of 900 nm, which is deposited on a high-borosilicate glass substrate. The reflective film is designed to maximize energy conversion while minimizing thermal losses. The system features a double-sided photovoltaic module with a fixed position relative to the reflective film, ensuring optimal alignment during module movement. The reflective film's transmittance in the 400-900 nm range is optimized for maximum energy conversion while maintaining a high reflectivity in the 900 nm-1800 nm range.

Source

A double-layer antireflection coating for solar cells that enhances efficiency through a novel combination of bottom and top layers. The coating consists of a bottom layer comprising a fluorinated silica polymer dispersion and a modified mesoporous silica dispersion, which are combined in a 2:1 ratio. The bottom layer is cured to form a thin, uniform layer. The top layer is prepared by mixing the modified mesoporous silica dispersion with a fluorinated silica polymer solution. The top layer is cured to form a thicker, more robust layer. The bottom and top layers are combined to create a wide-band antireflection coating that provides superior light management compared to conventional single-layer coatings.

Source

Coating for solar modules that combines enhanced anti-soiling properties with improved durability. The coating comprises an inorganic oxide layer with pores that contain a specific type of dense oxide particles. The dense oxide particles have an aspect ratio of at least 2 and a smaller diameter of 3-20 nm, and the coating formulation includes between 0.1-30 wt% aluminium oxide equivalents of aluminium containing compound. The dense oxide particles form a network that provides both anti-soiling and anti-reflective properties, while the aluminium oxide enhances durability. The coating formulation can be applied to substrates like cover glass and then converted into a functional coating.

Source

A method for enhancing solar cell efficiency through synergistic treatment of existing anti-reflective coatings on glass substrates. The method involves cleaning the existing anti-reflective coating and applying a second, complementary coating to the glass surface. The second coating is specifically designed to enhance light transmission in the 400-800nm range while maintaining the existing anti-reflective properties. This dual-coating approach enables significant improvement in solar cell efficiency without removing the existing coating, addressing the environmental and safety concerns associated with traditional anti-reflective coatings.

Source

Solar cell with enhanced anti-reflective coating that achieves zero reflection across a broader spectral range. The coating comprises a single-layer or multilayer film of silicon nitride (SiNx) or magnesium fluoride (MgF2), which provides superior anti-reflective properties compared to conventional single-layer silicon nitride coatings. This multilayer design enables the film to achieve optimal antireflection characteristics across the solar spectrum, enabling higher conversion efficiency in solar cells.

Source

Nanocone-based anti-reflective coatings for solar cells and photodetectors that achieve superior light trapping efficiency through a novel nanostructured surface. The coatings feature silicon nitride nanopillars on a silicon nitride layer, engineered to optimize destructive interference for broad-spectrum anti-reflective performance. By matching the refractive index of the silicon nitride layer to the surrounding medium, the nanocone structure creates an effective medium that enables omni-directional light collection while maintaining absorption characteristics. This approach enables high-efficiency solar cells and photodetectors with reduced reflection and improved optical quality, particularly at oblique angles of incidence.

Source

A photovoltaic glass reflective film with ultra-high visible light reflectivity for solar panels. The film comprises a glass substrate, a silicon nitride layer, a polysilsesquioxane layer, a methyltrimethoxysilane layer, a magnesium fluoride layer, water, and a silane coupling agent. The silicon nitride layer enhances the film's thermal stability and optical properties, while the polysilsesquioxane layer provides high reflectivity and durability. The methyltrimethoxysilane layer contributes to the film's optical performance, and the magnesium fluoride layer improves the film's thermal resistance. The silane coupling agent facilitates the assembly process. The film achieves an ultra-high reflectivity of over 85% and high whiteness, enabling improved solar panel efficiency.

Source

Anti-reflective film for solar photovoltaic modules that combines high transmittance with enhanced mechanical properties. The film comprises hollow silica nanospheres (HSNs) coated with titanium dioxide nanoparticles, which are uniformly dispersed in an acid silica sol. The acid silica sol acts as a binder to improve the mechanical strength of the film, while the titanium dioxide nanoparticles enhance self-cleaning and durability. This one-step spin coating process enables the creation of a uniform, high-performance anti-reflective film with superior mechanical properties compared to conventional methods.

Source

Anti-reflective film for solar cells and photovoltaic modules that achieves superior performance across a broad spectrum of wavelengths beyond the conventional 550nm limit. The film comprises a base layer of silicon dioxide or silicon nitride and a nano-hollow sphere layer, with the base layer containing these materials. The nano-hollow sphere layer is composed of hollow spheres with diameters ranging from 10-100 nm, which effectively scatter and absorb shorter wavelengths of light while transmitting longer wavelengths. This multi-layer architecture enables the film to achieve an optimal refractive index profile that matches the silicon wafer's refractive index, thereby significantly reducing reflection losses across the solar spectrum.

Source

Anti-reflective coating for solar cells that enhances light transmission while maintaining low reflectivity. The coating comprises a SiNx layer with a thickness of approximately 75 nm, combined with a surface modifier to improve storage stability of the coating solution. The coating is applied to the front surface of crystalline silicon solar cells, where it significantly reduces front reflectivity from 6% to below 1%, while maintaining high light transmission. The coating formulation enables efficient solar energy conversion by minimizing light loss through reflection.

Source

A solar coating that enables high-performance solar panels through a novel, low-cost, and environmentally friendly approach. The coating combines a pigment with a binder to create a diffuse optical surface that enhances solar energy conversion while maintaining durability and thermal stability. The coating achieves superior spectral selectivity, thermal resistance, and corrosion protection through a unique combination of pigment and binder materials. This innovative solar coating enables high-efficiency solar panels with reduced production costs and environmental impact compared to traditional electroplating methods.

Source

A solar cell antireflection film that enhances light transmission at interfaces between different refractive index materials. The film comprises a silicon nitride layer with a specific refractive index, which is combined with a second layer of a material with a different refractive index. The film's interface between these layers exhibits reduced light reflection, while maintaining efficient light transmission through the combined refractive index combination. This approach enables improved solar cell efficiency by minimizing optical losses at the interfaces between different refractive index materials.

Source

A silicon-based antireflection film for solar cells that combines reduced reflectivity with improved performance against photoinduced degradation (PID). The film comprises a silicon oxynitride layer and a silicon nitride gradient layer, with the gradient layer having a thickness that optimizes reflectivity reduction while maintaining PID protection. This dual-layer structure enables both high reflectivity reduction and enhanced PID protection, enabling high-efficiency solar cells with improved light management properties.

Source

Antireflection film for solar panels that achieves superior light transmission while maintaining durability. The film comprises a hollow silica layer, a composite silicon oxide layer, a waterproof layer, and a wear-resistant layer. The film is created through a single-step process involving spraying and drying the layers, eliminating the need for multiple layers. This design enables the film to achieve optimal antireflection properties while maintaining its structural integrity.

Source

Solar cell module with enhanced light absorption through a novel multi-layered structure. The module comprises a photovoltaic panel with multiple solar cells, a protective substrate, and an anti-reflection coating positioned between the panel and substrate. The anti-reflection coating is formed through a process that involves depositing a metal precursor film through a selenization process, followed by a series of light absorption layers. This multi-layered structure enhances light absorption by creating a continuous light path through the panel, while maintaining the structural integrity of the photovoltaic cells.

Source

A method for enhancing the photovoltaic energy generation of silicon solar cells through the use of a composite antireflection coating. The method involves incorporating a thin layer of a material with a specific refractive index between the silicon surface and the photovoltaic cells, which enhances light transmission and reduces reflection. This composite coating, comprising a thin layer of a material with a refractive index intermediate between silicon and silver, effectively increases the photovoltaic cell's light absorption efficiency by reducing the reflection of incident light.

Source

Antireflection coating for solar cells with minimal environmental impact. The coating comprises a silicon oxynitride film, a silicon nitride film, a titanium dioxide film, and a silicon dioxide film, with the silicon dioxide film being a silicon dioxide xerogel. The coating achieves an average reflectance of 1.49% under environmental conditions of 45°C and 95% relative humidity, making it suitable for solar cells operating in diverse environmental conditions.

Source

Anti-reflective coating composition and film for solar cells that combines high transmittance with superior durability. The composition comprises a water-soluble organic solvent with a refractive index less than 1.5, a nonionic surfactant, and an acid catalyst. The composition achieves high transmittance through its low refractive index while maintaining excellent durability through controlled surfactant concentration. The composition can be applied to solar cell modules to enhance light absorption efficiency without compromising optical quality.

Source

A sol-gel anti-reflective film for multi-junction solar cells that achieves broad-spectrum protection through a gradient of refractive index. The film is prepared using a sol-gel process with a refractive index gradient that enables selective absorption of light across the solar spectrum, particularly in the 1.5-1.7 μm range. This approach eliminates the need for traditional multilayer coatings and enables high-efficiency solar cells with reduced light loss.

Source

A double-layer light antireflective coated glass plate for solar modules that addresses the limitations of current ultra-white float glass cover glass. The double-layer coating consists of a thin layer of low-iron glass and a thin layer of a high-iron glass, with the high-iron glass layer applied on top of the low-iron glass. This dual-layer design provides superior light transmission while maintaining the necessary optical properties for solar energy conversion.

Source

Solar cell module with enhanced light absorption through a novel multi-layer design. The module comprises a light-transmitting sheet positioned on the first side of the solar cells, a front protection part positioned between the light-transmitting sheet and the solar cells, and a rear sheet positioned on the second surface of the solar cells. The front protection part features a combination of a front anti-reflection layer and a higher refractive index rear anti-reflection layer, while the rear sheet incorporates a rear protective part and a rear anti-reflection layer. This multi-layer configuration enables improved light absorption through the front protection part, while maintaining the rear anti-reflection layer to prevent moisture penetration.

Source

Coating film for solar cells with enhanced antireflection properties, particularly for solar cells with textured surfaces. The coating film achieves superior antireflection performance through a novel composition that incorporates silica fine particles, polymer emulsion particles, and a hydrolyzable silicon compound. The composition is applied to the solar cell surface and then sintered at high temperature to form a dense, uniform film. The film's unique composition enables stable antireflection performance even at high solar irradiance levels, while maintaining mechanical integrity.

Source

A coating film for solar cell cover glass with enhanced durability and light reflection properties. The film incorporates a specific composition of silica and polymer emulsion particles with controlled pore size and density, which creates a dense and uniform antireflection structure. The film's unique pore structure and composition enable superior performance against dust, water condensation, and mechanical stress, while maintaining high reflectivity. The composition is optimized to achieve a static contact angle of water below 25°C, ensuring optimal performance in both high-temperature and low-temperature environments.

Source

Solar cell module with enhanced anti-glare properties through a novel surface treatment process. The module features a glass substrate with a precisely engineered surface topology comprising numerous macroscopically flat regions and numerous microscopically defined cracks. An antireflection coating is applied to the substrate, with a critical aspect being that the coating penetrates into the crack regions. The cracks themselves are filled with the coating material, creating a continuous, uniform surface that significantly reduces light reflection. This approach enables the production of solar cells with reduced glare, while maintaining high efficiency.

Source

Antireflective coatings for solar cells that selectively suppress infrared transmission while maintaining visible light suppression. The coatings employ a three-layer architecture with intermediate index layers between the visible and infrared transmission layers. The visible transmission layer has an index of refraction between 2.3 and 2.7, while the infrared transmission layer has an index of refraction between 1.8 and 2.1. This selective transmission minimizes infrared absorption while maintaining visible light suppression.

Source

A solar glass coating that improves light conversion efficiency through a latent material-based approach. The coating comprises a composition containing nano-SiO2, nano-MgF2, ytterbium nitrate, erbium nitrate, and terbium nitrate, which undergoes a controlled thermal treatment to activate the latent conversion material. This process enables the conversion of near-ultraviolet and near-infrared light into visible light, with improved performance compared to traditional antireflection coatings. The coating is produced through a simple, solvent-free process that maintains environmental sustainability and cost-effectiveness, making it suitable for industrial applications.

Source

Solar cell element with an anti-reflection film that achieves improved efficiency through controlled pore expansion of the anti-reflective film. The element comprises a light-absorbing component, an anti-reflective film system, and a method for preparing the same. The anti-reflective film is formed using an anodic aluminum oxide (AAO) template with hexagonal periodic distribution of nano-holes. The AAO template is prepared through an anodization process where an aluminum oxide layer is formed on a substrate. The AAO layer is then oxidized in a sulfuric acid solution to create an aluminum oxide quantum confinement film (AlQ3) with hexagonal periodic distribution of nano-pores. The pore spacing of the AlQ3 film is controlled by adjusting the electrolyte and electrolysis voltage. The light-absorbing component is then treated with a phosphoric acid solution to increase the pore diameter of the nano-pores in the AlQ3 film. This process enables the creation of a multilayer anti-reflective film with controlled pore expansion, allowing the application of single-layer or multi-layer anti-reflective coatings to improve solar cell efficiency.

Source

Solar photovoltaic antireflection coated glass that achieves high transmittance while reducing visible light reflection. The glass incorporates a novel antireflection coating that utilizes a specific nanostructured surface pattern to minimize Fresnel reflection coefficients while maintaining high solar transmittance. This coating design enables the glass to effectively control visible light reflection, particularly in the visible spectrum, while maintaining its optical properties for solar photovoltaic applications.

Source

A high-performance, long-lasting anti-reflective coating for outdoor applications that combines superior abrasion resistance, UV protection, and weather durability. The coating comprises a fluoropolymer matrix with crosslinked fluoropolymers, combined with a UV-stabilized component and a UV-absorbing additive. The formulation provides excellent scratch resistance, UV protection, and barrier properties against moisture migration, making it suitable for demanding outdoor environments such as solar panels, photovoltaic cells, and decorative laminates.

Source

A solar energy glass plating membrane that enhances light conversion efficiency in photovoltaic applications. The membrane contains a combination of a reflective component, a light conversion component, and a reinforcing agent. The reflective component is a thin film of a material that reduces reflection while the light conversion component is a material that enhances light absorption. The reinforcing agent is a polymer that improves the membrane's mechanical properties. The membrane can be produced using a single-step process that eliminates the need for separate antireflection coatings and laser processing. The membrane's performance is optimized through precise control of the reflective and conversion components' concentrations. The membrane's properties enable significant improvements in solar cell efficiency and durability compared to conventional antireflection coatings.

Source

A broadband omnidirectional antireflection coating for photovoltaic cells that enhances light transmission across a wide range of incident angles. The coating is a composite material comprising a thin layer of a specific material that provides both anti-reflective and omnidirectional optical properties. This material is applied to the glass surface of photovoltaic cells to significantly increase light transmission beyond the typical 4% threshold, enabling higher power conversion efficiency in solar cells.

Source

Photovoltaic glass with enhanced light transmission properties through a novel multi-layered antireflection coating system. The glass base plate features an ultra-white float glass substrate, with a double-layered light-reflective coating system comprising a silicon dioxide layer and a zirconium dioxide layer. The silicon dioxide layer provides the primary light-reflective surface, while the zirconium dioxide layer enhances the coating's optical performance by reducing the refractive index. This multi-layered coating system enables ultra-white light transmission while maintaining high solar energy conversion efficiency.

Source

Solar cell with improved anti-reflective coating that enhances light conversion efficiency. The coating comprises a thin-film Cu(In,Ga)Se2 layer with nano-rods, which provides a uniform and omnidirectional anti-reflective surface. The nano-rods are formed from a metal oxide, specifically ZnO, and have diameters between 10-100 nm. The anti-reflective layer is followed by a second, metal fluoride-based anti-reflective layer, which further reduces surface reflectance. The solar cell achieves an average reflectivity of 7% or less at all incident angles, enabling higher conversion efficiency compared to conventional anti-reflective coatings.

Source

Concentrating solar cell module with reduced reflectivity through an innovative anti-reflection coating structure. The module features a reflective layer that employs a multilayer thin film with a refractive index decreasing from 2.0 to 1.0, achieving a low reflectance of less than 0.5% across a 570 nm to 1000 nm wavelength range. This multilayer design enables efficient light collection while maintaining high reflectivity, making it suitable for non-tracking concentrating solar cell applications.

Source

Coatings for transparent substrates like glass that combine anti-reflective, abrasion-resistant, and self-cleaning properties. The coatings are formed through a sol-gel process using silane precursors that undergo acid hydrolysis to form a stable, chemically inert film. The film exhibits superior performance over conventional anti-reflective coatings, including enhanced optical transparency, mechanical stability, and resistance to environmental degradation. The coatings are particularly suitable for solar panels and glass applications where durability and optical performance are critical.

Source

A high efficiency sunlight reflective film for converting solar energy into electricity. The film is a multilayer structure with alternating high and low refractive index layers. The high refractive index layers reflect ultraviolet light, while the low refractive index layers prevent light scattering. The film is made by coating the layers onto a substrate. The alternating layers provide high ultraviolet reflection without needing complex vacuum deposition techniques. The film can be manufactured in large areas and endures outdoor conditions. The film is suitable for use in sunlight conversion applications like solar panels.

Source