Glass assembly applied to BIPV curtain wall and preparation method thereof, photovoltaic assembly

Abstract

The application discloses a glass assembly applied to a BIPV curtain wall and a preparation method and a photovoltaic assembly thereof, and relates to the technical field of glass curtain wall manufacturing. The glass assembly applied to the BIPV curtain wall comprises a transparent substrate, a resin interference film is arranged on one side surface of the transparent substrate, the thickness of the resin interference film continuously changes between 100 nm and 400 nm, a quantum dot conversion layer is arranged on the side of the resin interference film away from the transparent substrate, the quantum dot conversion layer comprises a transparent matrix and core-shell quantum dots doped in the transparent matrix, and is used for absorbing ultraviolet light and converting the ultraviolet light into visible light of a preset wavelength. The glass assembly can improve color saturation, reduce infrared heat loss, and improve the power generation efficiency of a photovoltaic assembly with the glass assembly.

Description

Technical Field

[0001] This invention relates to the field of glass curtain wall manufacturing technology, and more specifically, to a glass component for BIPV curtain walls and its preparation method, as well as a photovoltaic component. Background Technology

[0002] Building-integrated photovoltaic (BIPV) curtain walls are multifunctional building materials that combine photovoltaic power generation with the building envelope, achieving green power generation while enhancing the aesthetic value of buildings.

[0003] To meet architectural aesthetic requirements, existing photovoltaic (PV) curtain walls typically employ colored coatings or fixed-thickness interference films on the glass module surface for color rendering. However, this absorbs or reflects some incident light. To ensure a certain level of light transmittance and power generation efficiency, color saturation must be sacrificed, resulting in dull module colors and low color purity, failing to meet the aesthetic requirements of PV curtain walls. Furthermore, traditional PV curtain walls lack effective management of infrared light in the solar spectrum, with a large amount of infrared radiation being converted into heat, causing the battery operating temperature to rise and leading to efficiency losses. Summary of the Invention

[0004] The purpose of this invention is to provide a glass component for BIPV curtain walls and its preparation method, as well as a photovoltaic component, which can improve color saturation, reduce infrared heat loss, and improve the power generation efficiency of the photovoltaic component with the glass component.

[0005] The embodiments of the present invention are implemented as follows:

[0006] In one aspect, the present invention provides a glass assembly for use in BIPV curtain walls, comprising a transparent substrate, a resin interference film disposed on one side surface of the transparent substrate, the thickness of the resin interference film being continuously varied between 100 nm and 400 nm; and a quantum dot conversion layer disposed on the side of the resin interference film opposite to the transparent substrate, the quantum dot conversion layer comprising a transparent matrix and core-shell quantum dots doped in the transparent matrix, for absorbing ultraviolet light and converting it into visible light of a preset wavelength.

[0007] Optionally, the thickness of the resin interference film is continuously and linearly varied from one side to the opposite side along a straight line in the planar direction of the transparent substrate; or, the thickness of the resin interference film is periodically varied from one side to the opposite side along a straight line in the planar direction of the transparent substrate; or, the thickness of the resin interference film is radially varied from the center of the resin interference film to the surrounding area.

[0008] Optionally, the transparent matrix of the quantum dot conversion layer is a resin substrate, and the core layer of the core-shell quantum dots is CdSe and the shell layer is ZnS.

[0009] Optionally, the particle size of the core-shell quantum dots is 4-6 nanometers; the spacing between the core-shell quantum dots and the resin interference film is less than or equal to 50 micrometers.

[0010] Optionally, an antireflective coating is also provided on the surface of the transparent substrate away from the resin interference film.

[0011] Optionally, the antireflective coating is a silicon dioxide film or a magnesium fluoride film.

[0012] Optionally, an encapsulation layer is provided on the side of the quantum dot conversion layer facing away from the transparent substrate, so that the resin interference film and the quantum dot conversion layer are encapsulated between the encapsulation layer and the transparent substrate; the encapsulation layer is made of PVB material.

[0013] Another aspect of the present invention provides a method for manufacturing a glass assembly for use in BIPV curtain walls, comprising:

[0014] Provide a transparent substrate;

[0015] A resin layer is coated on the surface of a transparent substrate using a spin coating process. The thickness of the resin layer is continuously varied between 100 nm and 400 nm by the centrifugal force of the spin coating.

[0016] A patterned mask with a preset transmittance distribution is applied to the resin layer, and patterned ultraviolet exposure is performed to form a resin interference film.

[0017] A screen printing process is used to coat the mixed transparent matrix and core-shell quantum dots onto the side of the resin interference film away from the transparent substrate. After the transparent matrix and core-shell quantum dots are cured, a quantum dot conversion layer is formed.

[0018] Optionally, before forming the quantum dot conversion layer, the method further includes:

[0019] An antireflection film was deposited on the side of a transparent substrate facing away from the resin interference film using a magnetron sputtering process.

[0020] In another aspect, the present invention provides a photovoltaic module, including photovoltaic cells, a backsheet, and a glass assembly for use in a BIPV curtain wall; the photovoltaic cells are disposed between the backsheet and the glass assembly.

[0021] The beneficial effects of this invention include:

[0022] This application provides a glass assembly for BIPV curtain walls, including a transparent substrate as the basic framework of the glass assembly. The transparent substrate can support functional layers such as a resin interference film and a quantum dot conversion layer disposed on one side surface, improving the overall mechanical strength and durability of the glass assembly. A resin interference film is disposed on one side surface of the transparent substrate, and the thickness of the resin interference film continuously varies between 100nm and 400nm. The continuously varying thickness allows different regions of the interference film to strongly reflect specific wavelengths within the visible light band, and the reflected light from each region is superimposed to form a uniform and saturated mixed color. Compared with existing glass assemblies that display color through colored coatings, this application uses a resin interference film with varying thickness, which does not absorb incident light, improving color saturation while ensuring light transmittance. At the same time, existing glass assemblies, by setting a fixed thickness interference film, can only reflect a single wavelength of light, which can easily lead to monotonous colors or uneven local color depth. In contrast, this application uses a resin interference film with continuously varying thickness, which can cover a wider visible light band, achieving uniformity and richness of color. In addition, the 100-400nm... A resin interference film of a certain thickness range can increase the reflectivity of the interference film to infrared light, reducing the possibility of infrared radiation penetrating into the glass module and being converted into heat. A quantum dot conversion layer is set on the side of the resin interference film opposite to the transparent substrate. The quantum dot conversion layer contains a transparent matrix and core-shell quantum dots doped within the transparent matrix, which are used to absorb ultraviolet light and convert it into visible light of a predetermined wavelength. The core-shell quantum dots are responsible for absorbing ultraviolet light, improving the luminous efficiency of photovoltaic modules with this glass module, while also enhancing the weather resistance of the quantum dot conversion layer, meeting the requirements of long-term outdoor use of BIPV curtain walls. The glass module applied to BIPV curtain walls described above can improve color saturation, reduce infrared heat loss, and improve the power generation efficiency of photovoltaic modules with this glass module. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is one of the structural schematic diagrams of a glass assembly provided in an embodiment of the present invention;

[0025] Figure 2 This is a second schematic diagram of the structure of the glass assembly provided in an embodiment of the present invention;

[0026] Figure 3 This is the third schematic diagram of the structure of the glass assembly provided in the embodiment of the present invention;

[0027] Figure 4 This is one of the process flow diagrams for the fabrication of a glass component provided in an embodiment of the present invention;

[0028] Figure 5 The second flowchart of the glass assembly manufacturing process provided in this embodiment of the invention;

[0029] Figure 6 This is a schematic diagram of the structure of a photovoltaic module provided in an embodiment of the present invention.

[0030] Icons: 100-Glass module; 110-Transparent substrate; 120-Resin interference film; 130-Quantum dot conversion layer; 140-Encapsulation layer; 150-Antireflective film; 160-PET spacer mesh layer; 200-Photovoltaic module; 210-Photovoltaic cell; 220-Backsheet; 230-First encapsulating layer; 240-Second encapsulating layer. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] Please refer to Figure 1 This embodiment provides a glass assembly 100 for use in BIPV curtain walls, including a transparent substrate 110. A resin interference film 120 is disposed on one side surface of the transparent substrate 110, and the thickness of the resin interference film 120 is continuously varied between 100nm and 400nm. A quantum dot conversion layer 130 is disposed on the side of the resin interference film 120 opposite to the transparent substrate 110. The quantum dot conversion layer 130 includes a transparent matrix and core-shell quantum dots doped in the transparent matrix, which are used to absorb ultraviolet light and convert it into visible light of a preset wavelength.

[0038] Specifically, such as Figure 1 As shown, the transparent substrate 110 can be a cover glass, which provides mounting support for all subsequent functional layers. Preferably, the light transmittance of the transparent substrate 110 is not less than 90% to ensure that visible light and ultraviolet light in the solar spectrum can effectively penetrate to the subsequent resin interference film 120 and quantum dot conversion layer 130, avoiding light loss due to substrate shading.

[0039] As a building envelope, BIPV curtain walls must withstand external environmental loads. Preferably, the transparent substrate 110 is made of ultra-clear tempered glass. Ultra-clear tempered glass has strong bending strength and impact resistance, which can reduce the possibility of failure of the resin interference film 120 and quantum dot conversion layer 130 due to external force damage or environmental corrosion. At the same time, ultra-clear tempered glass has excellent weather resistance, reducing the possibility of deformation and cracking of the glass component 100 due to temperature changes. Of course, in addition to ultra-clear tempered glass, the transparent substrate 110 can also be other transparent materials with strong weather resistance and strength, and this application does not impose any limitations on this.

[0040] According to the principle of optical interference, the reflection wavelength of the interference film and the film thickness satisfy the following condition: Where λ is the reflected wavelength, n is the refractive index of the film, and d is the film thickness. Traditional glass components 100 only have interference films of fixed thickness, so they can only reflect visible light of a single wavelength. For example, when d is 200nm, they only reflect red light with a wavelength of about 624nm, resulting in monotonous color and low color purity of the glass components 100.

[0041] To address this technical problem, the glass assembly 100 of this application has a resin interference film 120 disposed on one side surface of the transparent substrate 110. The thickness of the resin interference film 120 continuously varies between 100nm and 400nm, allowing different regions of the interference film to strongly reflect specific wavelengths within the visible light band, such as red, green, and blue light. The reflected light from each region is superimposed to form a uniform and saturated mixed color, avoiding color uniformity due to the reflection of a single wavelength, thus improving color saturation. Furthermore, compared to existing glass assemblies 100 that coat with chemical dyes to improve color saturation, this application, through the placement of the resin interference film 120, only interferes with light to produce color without absorbing light, thereby improving color saturation while ensuring light transmittance.

[0042] Furthermore, the 100-400nm thickness range of the resin interference layer precisely encompasses the optimal thickness required for infrared light reflection, thereby increasing the reflectivity of the resin interference film 120 for infrared light. A significant amount of red light is reflected outside the glass module 100, unable to penetrate into the interior and be converted into heat. This configuration reduces the internal heat input of the photovoltaic module 200 using this glass module 100, lowering its operating temperature and increasing its output power.

[0043] Furthermore, the resin interference layer achieves a smooth transition in film thickness through a continuously gradient thickness design, avoiding abrupt changes in local thickness and ensuring uniform color on the surface of the glass component 100 with no obvious color difference, thus improving the requirements for appearance uniformity of BIPV curtain walls.

[0044] It should be noted that this application does not impose any restrictions on the specific thickness of each region in the resin interference layer. In the actual manufacturing process of the glass component 100, the appearance requirements of different building owners can be met by adjusting the range of film thickness gradient, which greatly improves the design flexibility of BIPV curtain walls.

[0045] Ultraviolet light in the solar spectrum cannot be absorbed by the photovoltaic cell 210 and will accelerate the aging of the encapsulating layer. To improve the lifespan and light conversion efficiency of the glass module 100, such as... Figure 1As shown, this application also includes a quantum dot conversion layer 130. The quantum dot conversion layer 130 is doped with core-shell quantum dots, and its function is to convert ultraviolet light into visible light that can be absorbed by the solar cell. The quantum dot conversion layer 130 is disposed on the side of the resin interference film 120 facing away from the substrate, ensuring that the resin interference film 120 completes interference color rendering and infrared reflection before allowing ultraviolet light and absorbable visible light to enter the quantum dot conversion layer 130, thereby improving the light conversion efficiency of the quantum dot conversion layer 130. The combination of the resin interference layer and the quantum dot conversion layer 130 significantly improves the light transmittance of the glass assembly 100.

[0046] Furthermore, in a preferred embodiment of this application, a PET spacer mesh layer 160 is disposed between the resin interference film 120 and the quantum dot conversion layer 130. The PET spacer mesh layer 160 has a uniformly distributed bump structure with a bump height of 50 μm ± 2 μm, a bump diameter of 80 μm, and a distribution density of approximately 200 bumps / cm².

[0047] By setting the PET spacer grid layer 160, a constant micro-gap can be maintained between the quantum dot conversion layer 130 and the resin interference film 120, avoiding film damage or loss of optical performance caused by direct contact between the two; at the same time, the PET material has good mechanical strength and weather resistance, and can play a supporting and buffering role in the multi-layer structure, improving the overall reliability of the glass assembly 100.

[0048] The glass assembly 100 for BIPV curtain walls provided in this application includes a transparent substrate 110, which serves as the basic framework of the glass assembly 100. The transparent substrate 110 can support functional layers such as a resin interference film 120 and a quantum dot conversion layer 130 disposed on one side surface of the substrate, thereby improving the overall mechanical strength and durability of the glass assembly 100. A resin interference film 120 is disposed on one side surface of the transparent substrate 110. The thickness of the resin interference film 120 is continuously varied between 100 nm and 400 nm. This continuously varying thickness allows different regions of the interference film to produce strong reflections of specific wavelengths within the visible light band. The reflected light from each region is superimposed to form a uniform and saturated mixed color. Compared with the existing glass component 100 which displays color through a colored coating, this application uses a resin interference film 120 with varying thicknesses, which does not absorb incident light and improves color saturation while ensuring light transmittance. At the same time, the existing glass component 100, by setting an interference film of fixed thickness, can only reflect light of a single wavelength, which can easily lead to monotonous colors or uneven local color depth. In contrast, this application sets a resin interference film 120 with continuously varying thicknesses, which can cover a wider visible light band and achieve uniformity and richness of color. In addition, the resin interference film 120 with a thickness range of 100-400nm can increase the reflectivity of the interference film to infrared light and reduce the possibility of infrared radiation penetrating into the interior of the glass component 100 and being converted into heat. A quantum dot conversion layer 130 is set on the side of the resin interference film 120 opposite to the transparent substrate 110. The quantum dot conversion layer 130 includes a transparent matrix and core-shell quantum dots doped in the transparent matrix, which is used to absorb ultraviolet light and convert it into visible light of a preset wavelength. The core-shell quantum dots are responsible for absorbing ultraviolet light, improving the luminous efficiency of the photovoltaic module 200 with the glass component 100, and simultaneously enhancing the weather resistance of the quantum dot conversion layer 130, meeting the requirements of long-term outdoor use in BIPV curtain walls. The aforementioned glass component 100 used in BIPV curtain walls can improve color saturation, reduce infrared heat loss, and increase the power generation efficiency of the photovoltaic module 200 with the glass component 100.

[0049] For example, the thickness of the resin interference film 120 gradually and linearly changes from one side to the opposite side along a straight line in the planar direction of the transparent substrate 110. For example, the thickness of the resin interference film 120 can increase or decrease sequentially from left to right, or from top to bottom. Alternatively, the thickness of the resin interference film 120 can gradually change periodically from one side to the opposite side along a straight line in the planar direction of the transparent substrate 110. For example, the thickness of the resin interference film 120 can change in a wavy shape from left to right, or from top to bottom. Alternatively, the thickness of the resin interference film 120 can gradually change radially from the center of the resin interference film 120 to the surrounding areas. For example, the thickness of the resin interference film 120 can gradually decrease or increase sequentially from the center to the surrounding areas, or change in a wavy shape from the center to the surrounding areas. It should be noted that this application does not impose any restrictions on the specific form of the thickness change of the resin interference film 120, as long as its thickness can be continuously varied within the range of 100-400 nm.

[0050] Optionally, the transparent matrix of the quantum dot conversion layer 130 is a resin substrate, and the core layer of the core-shell quantum dots is CdSe and the shell layer is ZnS.

[0051] Specifically, the resin substrate serves as both a carrier and a protective barrier for the core-shell quantum dots. This ensures the uniform dispersion of the quantum dots within the matrix to achieve their light conversion function, while also preventing direct exposure of the quantum dots to the external environment, which could lead to performance degradation. This improves the reliability of the quantum dot conversion layer 130. Furthermore, the use of a resin substrate as the transparent matrix for the quantum dot conversion layer 130 allows it to form the same interface with the adjacent resin interference film 120, avoiding insufficient interfacial adhesion due to material differences and enhancing the stability of the glass assembly 100.

[0052] The core layer of the core-shell quantum dot is CdSe (cadmium selenide), which determines the color and wavelength emitted after the quantum dot absorbs light, and can convert ultraviolet light with a wavelength of 300-400nm into visible light with a wavelength of 530nm. The shell layer surrounding the CdSe is ZnS, which can protect the CdSe core from external water and oxygen corrosion and prevent its decomposition, thereby significantly extending the lifespan of the quantum dot and improving the stability of the quantum dot conversion layer 130. In addition, the shell layer can passivate defects on the core surface, reduce energy loss, and make the absorbed light energy more efficiently converted into fluorescence, thereby improving the light conversion efficiency of the quantum dot.

[0053] Optionally, the particle size of the core-shell quantum dots is 4-6 nanometers, specifically, it can be 4 nanometers, 5 nanometers, or 6 nanometers; this application does not impose any limitation on this. A particle size range of 4-6 nm ensures that the quantum dots can efficiently capture 300-400 nm ultraviolet light and convert it into 470-560 nm visible light, thereby improving light conversion efficiency. Through the quantum confinement effect, the emission wavelength is precisely locked at approximately 620 nm, ensuring high color purity and stable conversion wavelength. The distance between the core-shell quantum dots and the resin interference film 120 is less than or equal to 50 micrometers, which can reduce ultraviolet light propagation loss and improve light conversion efficiency. If the distance between the core-shell quantum dots and the resin interference film 120 is too large, ultraviolet light may be absorbed by impurities or air molecules in the gap, leading to a decrease in conversion efficiency. This application does not impose any limitation on the distance between the core-shell quantum dots and the resin interference film 120.

[0054] In one possible implementation of this application, such as Figure 2 As shown, an antireflective coating 150 is also disposed on the surface of the transparent substrate 110 away from the resin interference film 120. The antireflective coating 150 can reduce the reflection loss of useful light and avoid ultraviolet light reflection, thus ensuring the high conversion efficiency of the quantum dot conversion layer 130. Optionally, the antireflective coating 150 is a silicon dioxide film layer or a magnesium fluoride film layer. Of course, in a specific embodiment of this application, the antireflective coating 150 can also be a stack of a silicon dioxide film layer and a magnesium fluoride film layer.

[0055] In one possible implementation of this application, such as Figure 3 As shown, an encapsulation layer 140 is provided on the side of the quantum dot conversion layer 130 facing away from the transparent substrate 110, so that the resin interference film 120 and the quantum dot conversion layer 130 are encapsulated between the encapsulation layer 140 and the transparent substrate 110; the encapsulation layer 140 is made of PVB material. PVB material has high light transmittance, which can ensure that the visible light converted by the quantum dots and the useful light filtered by the resin interference film 120 can pass through efficiently; in addition, PVB material has strong adhesion, which can achieve tight bonding of multi-layer structures; furthermore, PVB material has excellent high and low temperature resistance, which meets the weather resistance requirements of BIPV curtain walls.

[0056] By setting the encapsulation layer 140, the resin interference film 120 and quantum dot conversion layer 130 of the glass assembly 100 can be protected, reducing the possibility of them being corroded by outdoor moisture, dust and ultraviolet radiation, and improving the reliability and service life of the glass assembly 100.

[0057] Another aspect of the present invention, such as Figure 4 As shown, a method for manufacturing a glass component 100 for use in BIPV curtain walls is provided, comprising:

[0058] Step S100: Provide a transparent substrate 110; preferably, the transparent substrate 110 is ultra-white tempered cover glass.

[0059] Step S200: A resin layer is coated on the surface of the transparent substrate 110 using a spin coating process. The thickness of the resin layer is continuously varied between 100 nm and 400 nm by the centrifugal force of the spin coating.

[0060] Before applying the resin layer, the transparent substrate 110 needs to be cleaned to remove surface oil and dust, ensuring that the resin layer can be spread evenly. Preferably, the resin layer is NOA81 UV-curable resin, which has the characteristics of high light transmittance and fast UV curing speed.

[0061] Before coating the resin layer, the resin is heated to adjust its viscosity, enabling it to form a uniform thickness due to centrifugal force during rotation. During the rotational coating process, segmented rotation speed control is employed, adjusting the rotation speed to regulate the centrifugal force. Higher rotation speeds result in greater centrifugal force and thinner resin layer edges, creating a thickness gradient. It should be noted that this application does not impose any restrictions on the specific rotation speed; in actual preparation, it can be adjusted according to the desired thickness and resin viscosity, as long as a continuous thickness gradient is maintained.

[0062] Step S300: A patterned mask with a preset transmittance distribution is applied to the resin layer, and patterned ultraviolet exposure is performed to form a resin interference film 120. The higher the transmittance, the stronger the ultraviolet light irradiation, and the more fully the resin is cured. A patterned mask is placed above the coating layer of the ultraviolet-curable resin, and an ultraviolet light source is used to irradiate the resin layer through the patterned mask. The patterned mask has a continuously varying transmittance distribution, so that the ultraviolet light irradiates different areas of the resin layer with different intensities, resulting in differences in the curing reaction rate of each area. Under the action of centrifugal force, the incompletely cured resin flows from the area with stronger exposure and faster curing to the area with weaker exposure and slower curing, and finally cures to form a film layer with a continuously varying thickness.

[0063] Step S400: The mixed transparent matrix and core-shell quantum dots are coated onto the surface of the resin interference film 120 away from the transparent substrate 110 using a screen printing process. After the transparent matrix and core-shell quantum dots have cured, a quantum dot conversion layer 130 is formed. Preferably, a 300-400 mesh polyester screen is used. Too low a mesh number will result in an excessively thick film layer and reduced light transmittance; too high a mesh number will cause the quantum dots to clog the mesh openings, resulting in uneven coating. After coating, the glass assembly 100 is placed in a hot air oven at a preset temperature for a certain period of time to pre-bake the quantum dot conversion layer 130 to cure. This application does not impose any restrictions on the specific curing temperature and time, which can be adjusted according to the specific thickness of the quantum dot conversion layer 130.

[0064] Optionally, such as Figure 5 As shown, before forming the quantum dot conversion layer 130, the method further includes:

[0065] Step S210: An antireflection film 150 is deposited on the surface of the transparent substrate 110 facing away from the resin interference film 120 using a magnetron sputtering process. The antireflection film 150 can reduce visible light reflection loss and compensate for light loss caused by color development. During sputtering, magnesium fluoride and / or silicon dioxide targets are preferred, and the process must be carried out in a vacuum environment to avoid the reaction of oxygen and water vapor in the air with the target material, which would lead to oxygen in the film layer. The antireflection film 150 can be a magnesium fluoride layer, a silicon dioxide layer, or a stack of silicon dioxide and magnesium fluoride layers; this application does not impose any restrictions on this.

[0066] In another aspect, the present invention provides a photovoltaic module 200, such as Figure 6 As shown, it includes photovoltaic cells 210, a backsheet 220, and a glass assembly 100 used in BIPV curtain walls; the photovoltaic cells 210 are disposed between the backsheet 220 and the glass assembly 100.

[0067] To further improve the structural stability and weather resistance of the photovoltaic module 200, a first encapsulating layer 230 can be provided between the photovoltaic cell 210 and the backsheet 220; similarly, a second encapsulating layer 240 is provided between the photovoltaic cell 210 and the glass module 100. The first encapsulating layer 230 and the second encapsulating layer 240 are made of EVA (ethylene-vinyl acetate copolymer) or POE (polyolefin elastomer). The EVA film can form a high-strength bond with the photovoltaic cell 210, preventing structural loosening caused by interlayer peeling. Furthermore, the high visible light transmittance of the EVA film matches the high light transmittance of the glass module 100, ensuring that the photovoltaic cell 210 receives sufficient light and preventing power generation efficiency degradation due to insufficient light transmittance of the encapsulating layer. The POE film has stronger resistance to ultraviolet aging and damp heat aging, improving the weather resistance and service life of the photovoltaic module 200.

[0068] The specific structure and beneficial effects of the glass module 100 have been described in detail above and will not be repeated here. The photovoltaic cell 210 is located between the glass module 100 and the backsheet 220. The glass module 100 blocks outdoor moisture, dust, and ultraviolet rays from corroding the cell, while the backsheet 220 provides back protection and insulation, forming a two-way protection.

[0069] Meanwhile, the resin interference film 120 in the glass module 100 has a continuously varying thickness, which allows different regions of the interference film to strongly reflect specific wavelengths within the visible light band. The reflected light from each region is superimposed to form a uniform and saturated mixed color. In addition, the resin interference film 120 can increase the reflectivity of the interference film to infrared light, reducing the possibility of infrared radiation penetrating into the interior of the glass module 100 and being converted into heat. Furthermore, the quantum dot conversion layer 130 in the glass module 100 is used to absorb ultraviolet light and convert it into visible light of a preset wavelength, which not only improves the power generation efficiency of the photovoltaic module 200, but also improves the service life and reliability of the photovoltaic module 200.

[0070] The photovoltaic module 200, through its application to the glass module 100 in the BIPV curtain wall, can improve color saturation, reduce infrared heat loss, and improve the power generation efficiency of the photovoltaic module 200.

[0071] The above description is merely an optional embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0072] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

Claims

1. A glass assembly for use in BIPV curtain walls, characterized in that, The device includes a transparent substrate, on one side of which a resin interference film is disposed, the thickness of which continuously varies between 100 nm and 400 nm; wherein the continuous variation is any one of the following: the thickness of the resin interference film continuously and linearly changes from one side to the opposite side along a straight line in the planar direction of the transparent substrate; or, the thickness of the resin interference film periodically changes from one side to the opposite side along a straight line in the planar direction of the transparent substrate; or, the thickness of the resin interference film radially changes from the center of the resin interference film to the surrounding area; a quantum dot conversion layer is disposed on the side of the resin interference film opposite to the transparent substrate, the quantum dot conversion layer comprising a transparent matrix and core-shell quantum dots doped in the transparent matrix, for absorbing ultraviolet light and converting it into visible light of a preset wavelength.

2. The glass assembly for BIPV curtain walls according to claim 1, characterized in that, The transparent matrix of the quantum dot conversion layer is a resin substrate, and the core layer of the core-shell quantum dot is CdSe and the shell layer is ZnS.

3. The glass assembly for BIPV curtain walls according to claim 2, characterized in that, The core-shell quantum dots have a particle size of 4-6 nanometers; the distance between the core-shell quantum dots and the resin interference film is less than or equal to 50 micrometers.

4. The glass assembly for use in BIPV curtain walls according to claim 1, characterized in that, An antireflective coating is also provided on the surface of the transparent substrate away from the resin interference film.

5. The glass assembly for BIPV curtain walls according to claim 4, characterized in that, The antireflective coating is a silicon dioxide film or a magnesium fluoride film.

6. The glass assembly for use in BIPV curtain walls according to claim 1, characterized in that, The quantum dot conversion layer is covered with an encapsulation layer on the side facing away from the transparent substrate, so that the resin interference film and the quantum dot conversion layer are encapsulated between the encapsulation layer and the transparent substrate; the encapsulation layer is made of PVB material.

7. A method for manufacturing glass components for BIPV curtain walls, characterized in that, include: Provide a transparent substrate; A resin layer is coated on the surface of the transparent substrate using a spin coating process. The thickness of the resin layer is continuously varied between 100 nm and 400 nm by the centrifugal force of the spin coating. A patterned mask with a preset transmittance distribution is applied to the resin layer, and patterned ultraviolet exposure is performed to form a resin interference film. A screen printing process is used to coat the mixed transparent matrix and core-shell quantum dots onto the surface of the resin interference film away from the transparent substrate. After the transparent matrix and core-shell quantum dots are cured, a quantum dot conversion layer is formed. The continuous change can be any of the following: the thickness of the resin interference film gradually changes linearly from one side to the opposite side along a straight line along the plane of the transparent substrate; or the thickness of the resin interference film gradually changes periodically from one side to the opposite side along a straight line along the plane of the transparent substrate; or the thickness of the resin interference film gradually changes radially from the center of the resin interference film to the surrounding area.

8. The method for preparing a glass assembly for use in BIPV curtain walls according to claim 7, characterized in that, Prior to forming the quantum dot conversion layer, the method further includes: An antireflection film is deposited on the surface of the transparent substrate facing away from the resin interference film using a magnetron sputtering process.

9. A photovoltaic module, characterized in that, It includes photovoltaic cells, a backsheet, and a glass assembly for use in BIPV curtain walls as described in any one of claims 1-6; the photovoltaic cells are disposed between the backsheet and the glass assembly.

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