Glass structure with super-hydrophobic and light trapping functions and preparation method thereof

Abstract

The invention provides a glass structure with super-hydrophobic and light trapping functions and a preparation method thereof. The preparation method comprises the following steps: cleaning the surface of a glass substrate; performing laser etching treatment on the cleaned glass substrate to form a plurality of pyramid structures on the surface of the glass substrate; and combining the nanoscale silicon dioxide particles with the plurality of pyramid structures of the glass substrate to form a plurality of composite pyramid structures. By preparing the plurality of pyramid structures on the surface of the glass substrate, the propagation path of light in the glass substrate can be prolonged, so that the probability that the light is absorbed by the glass substrate is improved, and the light harvesting capability of the glass substrate is further enhanced. The nanoscale silicon dioxide particles are attached to the surfaces of the pyramid structures, so that the roughness of the surfaces of the pyramid structures is improved, and the hydrophobic performance of the pyramid structures is improved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present disclosure belong to the technical field of photovoltaic devices, and particularly relate to a glass structure with super-hydrophobic and light-trapping functions and a preparation method thereof. BACKGROUND

[0002] In the field of photovoltaics, photovoltaic glass as an important component of photovoltaic modules, its performance is directly related to the efficiency and stability of photovoltaic power generation. The traditional photovoltaic glass only has the basic light transmission function, but in practical application, it faces many challenges. On the one hand, the reflectivity of light on the surface of the traditional photovoltaic glass is high, a large amount of light energy is wasted, resulting in low utilization rate of light energy by the photovoltaic module, which seriously restricts the improvement of photovoltaic power generation efficiency. On the other hand, the glass surface is easy to adsorb dust, water stains and other pollutants. These pollutants not only damage the aesthetics of the glass, but more importantly, they significantly reduce the light transmittance of the glass, thereby affecting the performance of the entire photovoltaic system. In addition, some existing technical means aimed at improving the performance of the glass generally have poor durability, which is difficult to meet the long-term stable development needs of the photovoltaic industry. Therefore, developing a glass structure and a preparation method thereof to solve the above problems has become a key problem to be solved in the current photovoltaic field. SUMMARY

[0003] Embodiments of the present disclosure aim to at least solve one of the technical problems existing in the prior art, and provide a glass structure with super-hydrophobic and light-trapping functions and a preparation method thereof.

[0004] A first aspect of the present disclosure provides a preparation method of a glass structure with super-hydrophobic and light-trapping functions, the preparation method comprising:

[0005] cleaning the surface of the glass substrate;

[0006] performing laser etching treatment on the cleaned glass substrate to form a plurality of pyramid structures on the surface of the glass substrate;

[0007] combining the nanoscale silicon dioxide particles with the plurality of pyramid structures of the glass substrate to form a plurality of composite pyramid structures.

[0008] In some embodiments of the present disclosure, the cleaning treatment of the surface of the glass substrate specifically comprises:

[0009] cleaning and activating the surface of the glass substrate by using a chemical reagent or plasma.

[0010] In some embodiments of the present disclosure, the laser etching in the step of performing laser etching treatment on the cleaned glass substrate to form a plurality of pyramid structures on the surface of the glass substrate specifically comprises:

[0011] The laser beam focusing shape is set as a needle tip structure;

[0012] The focusing angle of the laser is controlled to be 10°-60°;

[0013] The spot diameter of the laser is controlled to be 2 μm;

[0014] The distance between the focus of the laser beam and the surface of the glass substrate is controlled to be 5-10 μm;

[0015] The offset of each pass of the laser beam is controlled to be 10 μm.

[0016] In some embodiments of the present disclosure, the laser etching further comprises:

[0017] The etching power of the laser is controlled to be 20-500 W;

[0018] The spot moving speed of the laser is controlled to be 1-600 m / s.

[0019] In some embodiments of the present disclosure, the laser etching further comprises:

[0020] The laser is controlled to move in a cross shape, or the laser is controlled to be randomly roughened.

[0021] In some embodiments of the present disclosure, the combining of the nanoscale silica particles with the plurality of pyramid structures of the glass substrate to form a plurality of composite pyramid structures specifically comprises:

[0022] The etched glass substrate is placed in a suspension containing nanoscale silica particles, to form a composite pyramid structure with silica particles attached to the surface of the glass substrate;

[0023] After drying treatment of the glass substrate with silica particles attached, the glass substrate is placed in an environment of 600-800 ℃, to form a composite pyramid structure of silica and pyramid structure.

[0024] In some embodiments of the present disclosure, the placing of the etched glass substrate in a suspension containing nanoscale silica particles to form a composite pyramid structure with silica particles attached to the surface of the glass substrate specifically comprises:

[0025] The etched glass substrate is placed in an ethanol suspension containing nanoscale silica particles;

[0026] The ethanol suspension is ultrasonically vibrated for 20-30 minutes in a manner of ultrasonic vibration, to form a composite pyramid structure with a plurality of silica particles attached to the pyramid structure on the surface of the glass plate.

[0027] In some embodiments of the present disclosure, after the drying process of the glass substrate with the adhered silica particles, the glass substrate is placed in an environment with a temperature of 600-800°C for 30 minutes.

[0028] The second aspect of the present disclosure provides a glass structure with super-hydrophobic and light-trapping functions, which is prepared according to the method for preparing a glass structure with super-hydrophobic and light-trapping functions according to any one of the above embodiments. The glass structure with super-hydrophobic and light-trapping functions comprises a glass substrate and a composite pyramid structure formed on the surface of the glass substrate. The composite pyramid structure comprises a plurality of pyramids and nano-sized silica particles, and each of the pyramids is attached with a plurality of the silica particles.

[0029] According to the glass structure with super-hydrophobic and light-trapping functions and the method for preparing the same, the plurality of pyramid structures are prepared on the surface of the glass substrate, which can prolong the propagation path of light in the glass substrate. When the light is incident on the surface of the glass substrate, the pyramid structures cause the light to be scattered and refracted between different interfaces multiple times, i.e., the propagation path of the light is prolonged, thereby increasing the probability of light being absorbed by the glass substrate and enhancing the light-trapping capability of the glass substrate. According to actual tests, the light absorption rate of the glass substrate prepared by the present application can be increased by more than 5-8% compared with the conventional photovoltaic glass substrate, thereby effectively improving the power generation efficiency of the photovoltaic module and providing strong support for the efficient use of photovoltaic power generation. By attaching the nano-sized silica particles on the surface of the plurality of pyramid structures, the roughness of the surface of the pyramid structures is increased, and the hydrophobic property of the pyramid structures is improved. When the water droplets fall on the surface of the glass substrate, the contact area between the water droplets and the pyramid structures and the silica particles is small, and the adhesion force on the water droplets is extremely small, i.e., the water droplets are difficult to adhere to the surface of the glass substrate and roll off the surface of the glass substrate. In the rolling process, the water droplets carry away the pollutants such as dust adhered to the surface of the glass substrate, so that the surface of the glass substrate is kept clean, thereby ensuring the light transmittance of the glass substrate. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 Flowchart of the method for preparing the glass structure with super-hydrophobic and light-trapping functions according to an embodiment of the present disclosure;

[0031] Figure 2 Partial preparation process diagram of the method for preparing the glass structure with super-hydrophobic and light-trapping functions according to an embodiment of the present disclosure.

[0032] In the drawings, various reference numerals represent the following items:

[0033] 10, glass substrate;

[0034] 20. A compound pyramidal structure. DETAILED DESCRIPTION

[0035] Example embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings. While example embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present disclosure to those skilled in the art.

[0036] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless specifically identified as an order dependent step. It is also to be understood that additional or alternative steps can be employed.

[0037] Although the terms first, second, third, and the like can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0038] For ease of description, spatially relative terms can be used herein for the purpose of illustrating one element's or feature's relationship to another element or feature as shown in the figures. Such spatially relative terms include "internal", "external", "inward", "outward", "under", "below", "above", "on", "above", and the like. These spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device is inverted, then an element that is described as "below" or "beneath" another element or feature would then be oriented "above" or "over" the other element or feature. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0039] As shown in Figure 1 and Figure 2 , the first aspect of the present disclosure provides a method for preparing a glass structure with super-hydrophobic and light-trapping functions, the method comprising:

[0040] S100: cleaning the surface of a glass substrate;

[0041] S200: performing laser etching treatment on the cleaned glass substrate to form a plurality of pyramid structures on the surface of the glass substrate;

[0042] S300: combining nano-sized silica particles with the plurality of pyramid structures of the glass substrate to form a plurality of composite pyramid structures.

[0043] According to the preparation method of the glass structure with super-hydrophobic and light-trapping functions, the surface of the glass substrate is first cleaned to remove impurities, oil stains and other pollutants on the surface of the glass substrate; then, the cleaned glass substrate is subjected to laser etching treatment to form a plurality of pyramid structures on the surface of the glass substrate; and finally, the nano-sized silicon dioxide particles are combined with the plurality of pyramid structures on the surface of the glass substrate to form a plurality of composite pyramid structures. By preparing a plurality of pyramid structures on the surface of the glass substrate, the propagation path of light in the glass substrate can be prolonged. When light is incident on the surface of the glass substrate, the pyramid structures cause the light to be scattered and refracted multiple times between different interfaces, i.e., the propagation path of the light is prolonged, thereby increasing the probability of light being absorbed by the glass substrate and enhancing the light-trapping capability of the glass substrate. According to actual tests, the light absorption rate of the glass substrate prepared by the present application can be increased by more than 5-8% compared with conventional photovoltaic glass substrates, thereby effectively improving the power generation efficiency of photovoltaic modules and providing strong support for the efficient use of photovoltaic power generation. By attaching nano-sized silicon dioxide particles to the surfaces of the plurality of pyramid structures, the roughness of the surfaces of the pyramid structures is increased, and the hydrophobic properties of the pyramid structures are improved. When water droplets fall on the surface of the glass substrate, the contact area of the water droplets with the pyramid structures and the silicon dioxide particles is small, and the adhesion force acting on the water droplets is extremely small, i.e., the water droplets are difficult to adhere to the surface of the glass substrate and roll off the surface of the glass substrate. In the process of rolling off, the water droplets carry away the pollutants such as dust adhering to the surface of the glass substrate, so that the surface of the glass substrate remains clean, thereby ensuring the light transmittance of the glass substrate.

[0044] In some embodiments of the present disclosure, S100: the surface of the glass substrate is cleaned, specifically including:

[0045] The surface of the glass substrate is cleaned and activated by using a chemical reagent or plasma.

[0046] When the surface of the glass substrate is cleaned by using a chemical reagent, the composition of the chemical reagent can effectively dissolve and remove oil stains, dust and other pollutants, and at the same time, the chemical reagent can slightly corrode the surface of the glass substrate to increase the roughness of the surface of the glass substrate and improve the adhesion of the silicon dioxide particles. The chemical reagent can be a glass cleaner.

[0047] When the surface of the glass substrate is cleaned by using plasma, the high-energy particles in the plasma react physically and chemically with the oil stains, dust and other pollutants on the surface of the glass substrate, thereby removing the pollutants on the surface of the glass substrate, and the high-energy particles activate the chemical bonds on the surface of the glass substrate, thereby making the surface of the glass substrate with activated chemical bonds more easily combined with the silicon dioxide particles.

[0048] In some embodiments of the present disclosure, the laser etching in the S200 step specifically includes:

[0049] The laser beam focusing shape is set as a needle tip structure;

[0050] The focusing angle of the laser is controlled to be 10°-60°;

[0051] The spot diameter of the laser is controlled to be 2 μm;

[0052] The distance between the focus of the laser beam and the surface of the glass substrate is controlled to be 5-10 μm;

[0053] The offset of each pass of the laser beam is controlled to be 10 μm.

[0054] The etching power of the laser is controlled to be 20-500 W;

[0055] The spot moving speed of the laser is controlled to be 1-600 m / s.

[0056] Specifically, the laser beam focusing shape is set as a needle tip structure, so that the beam can etch a pyramid structure on the surface of the glass substrate; the focusing angle of the laser is controlled to be in the range of 10°-60°, and the spot diameter of the laser is controlled to be 2 μm, so that the pyramid structure etched on the surface of the glass substrate is more likely to adhere to the nano-sized silicon dioxide; the distance between the focus of the laser beam output by the laser and the surface of the glass substrate is controlled to be 5-10 μm, and the offset of each pass of the laser beam is controlled to be 10 μm, wherein the laser beam etches a plurality of passes of pyramid structures on the surface of the glass substrate, the distance by which the laser moves from one pass to an adjacent pass is 10 μm, the etching power of the laser is controlled to be 20-500 W, and the spot moving speed of the laser is controlled to be 1-600 m / s; under the above parameter ranges, the laser can etch a plurality of pyramid structures on the surface of the glass substrate.

[0057] In some embodiments of the present disclosure, the laser etching in the S200 step further includes:

[0058] The laser is controlled to move in a cross-intersection manner, or the laser is controlled to move in a random roughening manner.

[0059] Specifically, the laser can move in a cross-intersection manner to etch a plurality of pyramid structures on the surface of the glass substrate, or the laser can move in a random roughening manner to etch a plurality of pyramid structures on the surface of the glass substrate.

[0060] In some embodiments of the present disclosure, S300: combining the nano-sized silicon dioxide particles with the plurality of pyramid structures of the glass substrate to form a plurality of composite pyramid structures, specifically including:

[0061] S310: placing the etched glass substrate in a suspension containing nanoscale silica particles to form a composite pyramid structure with silica particles attached to the surface of the glass substrate;

[0062] S320: drying the glass substrate with silica particles attached, and then placing it in an environment of 600-800°C to form a composite pyramid structure of silica and pyramid structure.

[0063] Specifically, the etched glass substrate is placed in a suspension containing nanoscale silica particles to allow several silica particles to fully contact the multiple pyramid structures of the glass substrate and attach to the surface of each pyramid structure. The glass substrate with several silica particles attached is dried to remove the solution on the surface of the glass substrate, and then the dried glass substrate is placed in a high-temperature environment of 600-800°C for a period of time to allow the silica particles to sinter or bond with the surface of the pyramid structure, thereby making the combination of silica particles and pyramid structure more secure, i.e., forming a secure composite pyramid structure.

[0064] In some embodiments of the present disclosure, S310: placing the etched glass substrate in a suspension containing nanoscale silica particles to form a composite pyramid structure with silica particles attached to the surface of the glass substrate, specifically includes:

[0065] placing the etched glass substrate in an ethanol suspension containing nanoscale silica particles;

[0066] ultrasonically vibrating the ethanol suspension for 20-30 minutes to attach multiple silica particles to the pyramid structures on the surface of the glass plate to form a composite pyramid structure.

[0067] Specifically, the etched glass substrate is placed in an ethanol suspension containing nanoscale silica particles to allow several silica particles to fully contact the multiple pyramid structures of the glass substrate, and the ethanol suspension is ultrasonically vibrated for 20-30 minutes using ultrasonic vibration, i.e., using the cavitation effect and mechanical vibration of ultrasonic waves to accelerate the movement of nanoscale silica particles in the suspension, to promote the contact and combination of nanoscale silica particles with the surface of the pyramid structure, so that several silica particles are attached to the surface of each pyramid structure.

[0068] In some embodiments of the present disclosure, S320: after drying the glass substrate with silica particles attached, placing it in an environment of 600-800°C to form a composite pyramid structure of silica and pyramid structure, the dried glass substrate with silica particles attached is placed in an environment of 600-800°C for 30 minutes.

[0069] Under the above high-temperature treatment condition, not only the bonding strength between the nanoscale silica particles and the pyramid structure and between the nanoscale silica particles can be enhanced, but also the composite pyramid structure of the glass substrate surface can be further optimized, and the hydrophobic performance of the glass substrate surface can be improved. After the heat preservation for 30 minutes, the glass substrate is slowly cooled to room temperature to avoid the stress concentration on the glass substrate surface and the damage of the composite pyramid structure due to the rapid temperature change, and to ensure the integrity and stability of the glass structure.

[0070] The preparation method of the glass structure with super-hydrophobic and light-trapping functions provided by the embodiments of the present application will be described in detail below with specific examples, but the examples given below are only for understanding the present application and are not limited thereto.

[0071] Example 1

[0072] Parameter setting: a laser with a focusing angle of 10° is selected, the focal spot diameter is 2 microns, the offset amount of the glass substrate surface from the focal point of the laser beam is set to 5 microns, the offset amount of each pass of the laser beam is 10 microns, the etching power is set to 20 W, the moving speed is 1000 mm / s, and the laser is moved in a cross mode. During the post-processing, the etched glass substrate is immersed in a suspension composed of 20 nm SiO2-ethanol for 20 min of ultrasonic vibration, and then is placed in a 600°C furnace for 30 min of heat preservation and then is slowly cooled to room temperature.

[0073] Preparation process: first, the white glass for photovoltaics is cleaned using a special glass cleaner to remove oil stains and dust on the surface. The treated glass substrate is placed on the workbench of the laser etching equipment, the laser is set according to the above parameters, and the equipment is started for etching. After etching, the glass substrate is immersed in the SiO2-ethanol suspension and placed in an ultrasonic cleaning machine for ultrasonic vibration treatment. After the treatment is completed, the glass substrate is taken out, the surface is blown dry with nitrogen, and then is placed in a high-temperature furnace for heat preservation and cooling treatment according to the set temperature and time.

[0074] Performance test: the prepared glass structure is tested for light transmission performance, and the test results show that the light absorption rate of the glass structure of Example 1 is increased by 5% compared with that of the traditional photovoltaic glass; the super-hydrophobic performance test is performed, and the contact angle measuring instrument is used to measure the contact angle of water droplets on the glass surface, and the results show that the contact angle reaches 152°, showing good super-hydrophobic performance.

[0075] Example 2

[0076] Parameter setting: the focusing angle is adjusted to 60°, the focal spot diameter is still 2 microns, the glass substrate surface is set to 10 microns away from the focal point of the laser beam, the offset of each laser beam is 10 microns, the etching power is set to 500W, the moving speed is 6000mm / s, and the laser adopts random roughening mode. After processing, the etched glass substrate is immersed in a 50nm SiO2-ethanol suspension, ultrasonic vibration for 30min, after drying, it is placed in 800℃ for 30min, and then slowly cooled to room temperature.

[0077] Preparation process: the surface of the photovoltaic glass substrate is pretreated by plasma, and then the laser is set according to the parameters of the embodiment. After etching, the post-processing process is carried out, the glass substrate is immersed in SiO2-ethanol suspension and ultrasonic treated, then high temperature treatment at 700℃ for 30min, and then slowly cooled.

[0078] Performance test: the test shows that the light absorption rate of the glass structure is increased by 8% compared with the traditional photovoltaic glass, the contact angle of water droplets on the surface of the glass structure reaches 151°, and the super-hydrophobic performance and light trapping performance are excellent.

[0079] Example 3

[0080] Parameter setting: the focusing angle is adjusted to 80°, the offset of each laser beam is 30 microns, and the rest of the parameters are the same as those of example 2.

[0081] Preparation process: the white glass for photovoltaic is cleaned with a special glass cleaner to remove oil and dust on the surface, and then the laser is etched according to the parameters of the embodiment. After etching, the post-processing process is carried out, the glass substrate is immersed in SiO2-ethanol suspension and ultrasonic treated, then high temperature treatment at 800℃ for 30min, and then slowly cooled.

[0082] Performance test: the test shows that the light absorption rate of the glass structure is increased by 4% compared with the traditional photovoltaic glass, the contact angle of water droplets on the surface of the glass structure is 108.3°, and the super-hydrophobic performance and light trapping performance are significantly reduced.

[0083] The above examples are only part of the embodiments of the present application, and the parameters can be adjusted and optimized according to specific needs in actual application to obtain the best performance of the glass structure.

[0084] As Figure 2As shown, the second aspect of the present disclosure provides a glass structure with super-hydrophobic and light-trapping functions, which is prepared by the preparation method of the glass structure with super-hydrophobic and light-trapping functions according to any one of the above embodiments. The glass structure with super-hydrophobic and light-trapping functions includes a glass substrate 10 and a composite pyramid structure 20 formed on the surface of the glass substrate 10. The composite pyramid structure 20 includes a plurality of pyramids and nano-sized silica particles, and a plurality of silica particles are attached to each pyramid.

[0085] According to the glass structure with super-hydrophobic and light-trapping functions of the embodiments of the present disclosure, by forming a plurality of pyramid structures on the surface of the glass substrate 10, the propagation path of light in the glass substrate can be prolonged. When light is incident on the surface of the glass substrate 10, the pyramid structure causes the light to be scattered and refracted multiple times between different interfaces, i.e., the propagation path of the light is prolonged, thereby increasing the probability of light being absorbed by the glass substrate, and further enhancing the light-trapping capability of the glass substrate 10. By attaching nano-sized silica particles to the surface of the plurality of pyramid structures, the roughness of the surface of the pyramid structure is increased, and the hydrophobic property of the pyramid structure is improved. When a water droplet falls on the surface of the glass substrate 10, the contact area between the water droplet and the pyramid structure and the silica particles is small, and the adhesion force on the water droplet is extremely small, i.e., the water droplet is difficult to adhere to the surface of the glass substrate 10 and roll off the surface of the glass substrate 10. The water droplet carries away the dust and other pollutants attached to the surface of the glass substrate 10 during the rolling process, so that the surface of the glass substrate 10 remains in a clean state, thereby ensuring the light transmittance of the glass substrate 10.

[0086] The glass structure with super-hydrophobic and light-trapping functions of the present disclosure also has the following advantages:

[0087] 1. Significantly improve light-trapping efficiency: By precisely etching pyramid structures with special micro-nano structures on the surface of the glass substrate and combining post-processing to form a composite pyramid structure, the scattering and refraction effects of light on the surface of the glass substrate are significantly enhanced, and the absorption efficiency of light in the glass substrate is greatly improved. According to actual tests, compared with traditional photovoltaic glass substrates, the light absorption rate of the glass substrate prepared by the present disclosure can be increased by more than 5-8%, thereby effectively improving the power generation efficiency of photovoltaic modules and providing strong support for the efficient use of photovoltaic power generation.

[0088] 2. Significantly enhanced super-hydrophobic performance: The unique pyramid structure and the composite pyramid structure formed by post-processing make the glass substrate surface have excellent super-hydrophobic performance. The contact angle of water droplets on the glass substrate surface can reach more than 150°, far exceeding the contact angle of ordinary glass substrates. Water droplets on the glass substrate surface can hardly stay, and can quickly roll off and take away the dust and other pollutants on the glass substrate surface. This not only keeps the glass substrate surface clean, but also reduces the problem of reduced light transmittance caused by the attachment of pollutants, ensuring the stable operation of the photovoltaic system and reducing maintenance costs.

[0089] 3. Effectively improve the durability: From the pretreatment of the glass substrate surface, to the precise control of the laser etching parameters, to the carefully designed post-processing process of silica particle attachment, each link is optimized to make the micro-nano structure of the glass substrate surface more stable and firm. At the same time, since it is etched directly on the glass substrate, on the one hand, it reduces the number of layers of substances on the photovoltaic surface, and on the other hand, it improves the strength of the hydrophobic structure. This structure ensures that the light trapping effect and super-hydrophobic effect will not significantly decay during long-term use, effectively improving the durability of the glass performance.

[0090] The third aspect of the present disclosure provides a photovoltaic panel, comprising a photovoltaic panel body and a glass structure with super-hydrophobic and light trapping functions according to the above-mentioned embodiments, the glass structure with super-hydrophobic and light trapping functions is arranged on the surface of the photovoltaic panel body.

[0091] The photovoltaic panel of the present disclosure has the same technical effects as the glass structure with super-hydrophobic and light trapping functions, which will not be repeated here.

[0092] It can be understood that the above embodiments are only exemplary embodiments adopted to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also considered within the protection scope of the present disclosure.

Claims

1. A method for preparing a glass structure with superhydrophobic and light-trapping functions, characterized in that, The preparation method includes: Clean the surface of the glass substrate; The cleaned glass substrate is subjected to laser etching to form multiple pyramidal structures on the surface of the glass substrate. Multiple composite pyramidal structures are formed by combining nanoscale silica particles with multiple pyramidal structures on a glass substrate.

2. The method for preparing a glass structure with superhydrophobic and light-trapping functions according to claim 1, characterized in that, The cleaning process for the surface of the glass substrate specifically includes: The glass substrate was cleaned using aminosulfonic acid and sodium hydroxide, respectively, and then activated using plasma.

3. The method for preparing a glass structure with superhydrophobic and light-trapping functions according to claim 1, characterized in that, In the step of performing laser etching on the cleaned glass substrate to form multiple pyramidal structures on the surface of the glass substrate, the laser etching specifically includes: Set the laser beam focusing shape to a needle tip structure; The focusing angle of the laser is controlled to be 10° to 60°. The laser spot diameter is controlled to be 2μm; The distance between the focal point of the laser beam and the surface of the glass substrate is controlled to be 5–10 μm; The offset of each laser beam is controlled to be 10 μm.

4. The method for preparing a glass structure with superhydrophobic and light-trapping functions according to claim 1, characterized in that, The laser etching also includes: The etching power of the laser is controlled to be 20–500W; The laser spot movement speed is controlled to be 1–600 m / s.

5. The method for preparing a glass structure with superhydrophobic and light-trapping functions according to claim 1, characterized in that, The laser etching also includes: Control the laser to move in a cross pattern, or control the laser to hair out randomly.

6. The method for preparing a glass structure with superhydrophobic and light-trapping functions according to claim 1, characterized in that, The process of combining nanoscale silica particles with multiple pyramidal structures on a glass substrate to form multiple composite pyramidal structures specifically includes: The etched glass substrate is placed in a suspension containing nanoscale silica particles to form a composite pyramid structure with silica particles attached to the surface of the glass substrate. After drying the glass substrate with attached silica particles, it is placed in an environment of 600-800°C to form a composite pyramid structure of silica and pyramidal structure.

7. The method for preparing a glass structure with superhydrophobic and light-trapping functions according to claim 6, characterized in that, The step of placing the etched glass substrate in a suspension containing nanoscale silica particles to form a composite pyramidal structure with silica particles attached to the surface of the glass substrate specifically includes: The etched glass substrate was placed in an ethanol suspension containing nano-sized silica particles. An ethanol suspension was ultrasonically vibrated for 20–30 minutes, causing multiple silica particles to adhere to the pyramidal structure on the surface of a glass plate, forming a composite pyramidal structure.

8. The method for preparing a glass structure with superhydrophobic and light-trapping functions according to claim 6, characterized in that, In the step of drying the glass substrate with attached silica particles and then placing it in an environment of 600-800°C to form a composite pyramid structure of silica and pyramid structure, the dried glass substrate with attached silica particles is kept at 600-800°C for 30 minutes.

9. A glass structure with superhydrophobic and light-trapping functions, prepared by the method for preparing a glass structure with superhydrophobic and light-trapping functions according to any one of claims 1 to 8, characterized in that, The glass structure includes a glass substrate and a composite pyramid structure. The composite pyramid structure is formed on the surface of the glass substrate and includes multiple pyramids and nanoscale silica particles. Multiple silica particles are attached to each pyramid.

Images