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CN118853011B - Modified water-oxygen barrier film, flexible perovskite battery, and preparation methods and applications thereof - Google Patents

Modified water-oxygen barrier film, flexible perovskite battery, and preparation methods and applications thereof Download PDF

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Publication number
CN118853011B
CN118853011B CN202411339177.4A CN202411339177A CN118853011B CN 118853011 B CN118853011 B CN 118853011B CN 202411339177 A CN202411339177 A CN 202411339177A CN 118853011 B CN118853011 B CN 118853011B
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oxygen barrier
water
film
adhesive
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CN118853011A (en
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王亚丽
郭承鑫
陈玉金
杨甫
李永舫
金琳虎
华淳
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Suzhou Shangrou New Energy Co ltd
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Suzhou Shangrou New Energy Co ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00Adhesives in the form of films or foils
    • C09J7/20Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29Laminated material
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    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/06Non-macromolecular additives organic
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04Polyurethanes
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    • C09J7/00Adhesives in the form of films or foils
    • C09J7/20Adhesives in the form of films or foils characterised by their carriers
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    • C09J7/00Adhesives in the form of films or foils
    • C09J7/30Adhesives in the form of films or foils characterised by the adhesive composition
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K30/00Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
    • H10K30/50Photovoltaic [PV] devices
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K30/00Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
    • H10K30/80Constructional details
    • H10K30/88Passivation; Containers; Encapsulations
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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    • H10K71/00Manufacture or treatment specially adapted for the organic devices covered by this subclass
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    • C09J2203/00Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/322Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of solar panels
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    • C09J2301/00Additional features of adhesives in the form of films or foils
    • C09J2301/10Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/12Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
    • C09J2301/122Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
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    • C09J2301/00Additional features of adhesives in the form of films or foils
    • C09J2301/20Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
    • C09J2301/208Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive layer being constituted by at least two or more adjacent or superposed adhesive layers, e.g. multilayer adhesive
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    • C09J2475/00Presence of polyurethane
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/549Organic PV cells

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  • Chemical & Material Sciences (AREA)
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Abstract

本发明公开了一种改性水氧阻隔膜、柔性钙钛矿电池及其制备方法、应用,属于柔性钙钛矿太阳能电池技术领域。本发明的改性水氧阻隔膜,包括基层水氧阻隔材料、粘接增强层和丁基胶层,所述粘接增强层涂覆在基层水氧阻隔材料的表面外围,所述基层水氧阻隔材料和丁基胶层通过粘接增强层粘接;所述粘接增强层的厚度为1‑10μm,所述丁基胶层的厚度为50‑1000μm。本发明在丁基胶与基层水氧阻隔材料之间引入粘接增强层,可以在层压过程中实现丁基胶和基层水氧阻隔材料界面更好的界面粘接,粘接力大、施工简单、成本低,可以有效改善丁基胶与水氧阻隔膜界面粘接力低的问题。

The present invention discloses a modified water-oxygen barrier film, a flexible perovskite battery and a preparation method and application thereof, and belongs to the technical field of flexible perovskite solar cells. The modified water-oxygen barrier film of the present invention comprises a base water-oxygen barrier material, an adhesive enhancement layer and a butyl rubber layer, wherein the adhesive enhancement layer is coated on the surface periphery of the base water-oxygen barrier material, and the base water-oxygen barrier material and the butyl rubber layer are bonded by the adhesive enhancement layer; the thickness of the adhesive enhancement layer is 1-10 μm, and the thickness of the butyl rubber layer is 50-1000 μm. The present invention introduces an adhesive enhancement layer between the butyl rubber and the base water-oxygen barrier material, which can achieve better interface bonding between the butyl rubber and the base water-oxygen barrier material during the lamination process, has large bonding force, simple construction and low cost, and can effectively improve the problem of low bonding force between the butyl rubber and the water-oxygen barrier film interface.

Description

Modified water-oxygen barrier film, flexible perovskite battery, and preparation methods and applications thereof
Technical Field
The invention belongs to the technical field of flexible perovskite solar cells, and particularly relates to a modified water-oxygen barrier film, a flexible perovskite cell, a preparation method and application thereof.
Background
Perovskite batteries are used as novel photovoltaic cells, have the advantages of high efficiency, low cost, flexibility and the like, but the use stability of the perovskite batteries is still a key challenge. The packaging can well solve the stability problem and prolong the service life of equipment, and the reliable packaging technology can realize excellent sealing performance of the packaging, so that a stable working environment is formed, the invasion of external water and oxygen is prevented, and the products of battery decomposition can be prevented from overflowing from the system. The problem of water vapor permeation at the edges of perovskite batteries is a key factor limiting the use of perovskite batteries, and the water vapor permeation can cause chemical reactions of materials inside the batteries, thereby affecting the performance and the service life of the batteries. The side methyl groups in the butyl rubber molecular chain are densely arranged, so that the thermal movement of polymer molecules is limited, and the butyl rubber has lower water vapor permeability and good air tightness. At present, the durability of the glass-based perovskite solar cell can be improved by using a simple and low-cost encapsulation technology of polyisobutene, polyolefin low-temperature adhesive films and glass combination.
The flexible perovskite photovoltaic is a novel solar cell technology with wider application scenes, and can meet the requirements of different fields on efficient, lightweight and flexible solar power supplies. The ultra-light and ultra-thin flexible perovskite device is prepared on the micron-sized polymer substrate, so that the requirements of high efficiency and ultra-light and thin can be met, and the ultra-light and ultra-thin perovskite device has outstanding high-mass specific power. However, the polymer substrate is made of common polymer materials such as PET (polyethylene terephthalate), PEN (polyethylene naphthalate), PI (polyimide) and the like, and the water vapor barrier property of the substrate is poor, so that higher requirements are put on flexible perovskite battery packaging. The device is typically packaged using a combination of ultra-high water-oxygen barrier film in combination with a polyolefin film and butyl rubber, which is required to ensure a moisture barrier level (< 10 -3g/m2/day) across the upper and lower surfaces of the cell. Because the water blocking performance of the adhesive film is poor (generally more than 5g/m 2/day), the higher requirement is put on the water vapor blocking performance of the edge of the battery, and the high-performance formula butyl adhesive is required to be adopted for sealing the edge of the component, so that the water vapor is blocked outside in the quality guarantee period of the component, and the sealing adhesive is not penetrated so as to enter the battery area.
The interface adhesion between the butyl rubber and the flexible polymer base material is poor, and under the effects of various ageing and external force bending, the phenomenon of interface layering easily occurs, so that water vapor is quickly permeated into the battery from the layered interface, and the battery is caused to fail.
The Chinese patent CN118271980A provides a photovoltaic module, a manufacturing method thereof and a battery module, wherein the photovoltaic module comprises a plurality of layers of film materials, at least one layer of film material in the plurality of layers of film materials is a micro-crosslinking film with thermosetting property, and the rest film materials except the micro-crosslinking film in the plurality of layers of film materials are adhesive films with thermoplasticity. According to the technical scheme, the problem that the photovoltaic adhesive film is softened and deformed at high temperature can be solved, and the mechanical strength of the photovoltaic adhesive film can be effectively improved, so that when the photovoltaic adhesive film is applied to a battery assembly, the stability of the battery assembly can be improved by the micro-crosslinked film with thermosetting property, and the problems that the mechanical load of the battery assembly is reduced and the backboard is separated at high temperature are solved. However, the proposal does not relate to the use of butyl adhesive films, and can not solve the problem of water vapor permeation at the edge caused by poor interfacial adhesion between butyl adhesive and a flexible polymer substrate.
Therefore, how to effectively solve the water vapor permeation at the edge of the flexible perovskite battery is a technical problem to be solved in the present day.
Disclosure of Invention
In view of the above, the invention aims to provide a packaged flexible perovskite battery and a preparation method thereof, and the adhesive enhancement layer is introduced at the edge, so that the fastness between butyl rubber and a water vapor barrier film substrate is improved, and the problems of delamination and water vapor entering at the interface from the edge of the butyl rubber after aging are prevented, thereby effectively prolonging the service life of the flexible perovskite battery.
In order to achieve the above object, the present invention has the following technical scheme:
The invention provides a modified water-oxygen barrier film, which comprises a base water-oxygen barrier material, an adhesion enhancement layer and a butyl adhesive layer, wherein the adhesion enhancement layer is coated on the periphery of the surface of the base water-oxygen barrier material, the base water-oxygen barrier material and the butyl adhesive layer are adhered through the adhesion enhancement layer, the thickness of the adhesion enhancement layer is 1-10 mu m, and the thickness of the butyl adhesive layer is 50-1000 mu m;
the base layer water-oxygen barrier material is a transparent water-oxygen barrier material or a non-transparent water-oxygen barrier material, the transparent water-oxygen barrier material comprises a weather-resistant layer, a coating substrate and a water-oxygen barrier layer, and the non-transparent water-oxygen barrier material comprises a weather-resistant layer (outer layer), an aluminum foil layer, a polymer substrate and a weather-resistant layer (inner layer);
The adhesion enhancement layer consists of, by weight, 85-97 parts of polyurethane hot melt adhesive, 1-5 parts of silane coupling agent, 1-5 parts of ultraviolet absorber and 1-5 parts of free radical scavenger;
wherein the viscosity of the polyurethane hot melt adhesive is 3000-30000 mPa.s.
Preferably, the adhesion enhancing layer has a thickness of 2-5 μm.
Preferably, in one specific embodiment of the present invention, the width of the adhesion enhancing layer is 5mm at the peripheral edge of the surface of the water-oxygen barrier material of the base layer, and the width of the butyl rubber layer is 10-20mm.
Preferably, in the transparent water oxygen barrier material:
The coating substrate is at least one selected from polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polyethylene, polypropylene, polyimide and polytetrafluoroethylene, and can be a single layer or a plurality of layers, wherein the thickness of the coating substrate is 5-500 mu m, and more preferably 12-100 mu m;
the water-oxygen barrier layer is an inorganic barrier layer or a pair of layers comprising an inorganic barrier layer or an organic barrier layer;
The weather-proof layer is selected from a weather-proof coating or a weather-proof film layer, the weather-proof coating is selected from one or more of fluorine-containing paint, acrylic paint, polyester paint, epoxy paint and polyurethane paint, and the weather-proof film layer is a film containing polyvinyl fluoride, polyvinylidene fluoride, ethylene-tetrafluoroethylene copolymer, ethylene-chlorotrifluoroethylene copolymer or modified polyvinyl chloride.
Preferably, in the non-transparent water oxygen barrier material:
the thickness of the aluminum foil layer is 10-40 μm.
The polymeric substrate is polyethylene terephthalate.
The weather-proof layer is selected from a weather-proof coating or a weather-proof film layer, the weather-proof coating is one or more of fluorine-containing paint, acrylic acid paint, polyester paint, epoxy paint and polyurethane paint, and the weather-proof film layer is a film made of at least one material selected from polyvinyl fluoride, polyvinylidene fluoride, ethylene-tetrafluoroethylene copolymer, ethylene-chlorotrifluoroethylene copolymer and modified polyvinyl chloride. As a specific example, the base water-oxygen barrier material may be prepared by a vacuum coating method, and further preferably, the vacuum coating method is at least one selected from the group consisting of plasma chemical vapor deposition, magnetron sputtering and atomic layer deposition, and the water vapor permeability of the base water-oxygen barrier material is not higher than 5×10 -3g/m2/day (in the present invention, the test condition is 38 ℃, the humidity is 100% rh, and the rh is Relative Humidity (relative humidity) english abbreviation).
Preferably, the viscosity of the polyurethane hot melt adhesive is 3000-30000 mPa.s.
Preferably, the silane coupling agent is at least one selected from vinyltrimethoxysilane, vinyltris (beta-methoxyethoxy) silane, vinyltriisopropoxysilane, vinyltriethoxysilane, gamma-methacryloxypropyl trimethoxysilane, vinyltriacetoxysilane.
Preferably, the ultraviolet absorber is at least one selected from the group consisting of hydroxyphenol benzotriazoles and hydroxyphenol benzotriazines.
Preferably, the radical scavenger is a hindered amine radical scavenger.
Preferably, the butyl rubber layer is a butyl rubber tape or is prepared by coating butyl rubber, and the thickness is 40-120 mu m. Further preferably, the thickness of the butyl rubber layer is 50-1000 μm.
As a specific example of the invention, the width of the butyl rubber layer is 10-20mm.
In a second aspect, the present invention provides a method for preparing the water-oxygen barrier film, comprising the steps of:
(1) Coating the peripheral edge of the surface of the water-oxygen barrier film with coating liquid prepared by the adhesion enhancing layer, and curing completely under moisture;
(2) And (3) coating butyl glue or pasting butyl adhesive tape on the upper surface of the cured bonding enhancement layer to form a butyl adhesive layer.
In a third aspect, the present invention provides the use of a water-oxygen barrier film as described above in encapsulating perovskite cells.
Preferably, the perovskite cell is a flexible perovskite cell.
In a fourth aspect, the invention provides a flexible perovskite battery, which sequentially comprises a window water-oxygen barrier film, an upper adhesive film, a flexible perovskite battery piece, a lower adhesive film and a bottom water-oxygen barrier film from top to bottom, wherein the window water-oxygen barrier film and the bottom water-oxygen barrier film are the modified water-oxygen barrier film.
Preferably, the upper adhesive film is a UV-light conversion thermoplastic polyolefin adhesive film, which can convert ultraviolet light into visible light, and has a thickness of 50-500 mu m.
The term "UV light conversion" means converting ultraviolet light into visible light.
Further preferably, the transmittance of the UV light-converting thermoplastic polyolefin adhesive film under the light with the wavelength of 380-1100nm is more than or equal to 85%, and the transmittance of the UV light with the wavelength of 280-380nm is less than 0.5%.
Preferably, the lower adhesive film is a thermoplastic polyolefin adhesive film with the thickness of 50-500 mu m.
Further preferably, the transmittance of the thermoplastic polyolefin adhesive film under the light with the wavelength of 380-1100nm is more than or equal to 85%.
Preferably, the flexible perovskite battery piece comprises a support substrate, a perovskite battery device functional layer and a conductive tape.
Further preferably, the supporting substrate is selected from at least one of polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polyethylene, polypropylene and polyimide, and is a single-layer or multi-layer film, and the thickness of the supporting substrate is 20-300 mu m;
further preferably, the perovskite battery device functional layer is selected from one of formal (n-i-p) or trans-structure (p-i-n);
further preferably, the conductive adhesive tape is a tinned copper tape containing a pressure sensitive conductive adhesive.
In a fifth aspect, the present invention provides a method for preparing the flexible perovskite battery, comprising the steps of:
(1) Paving an adhesive film on the surface of the water-oxygen barrier film of the window;
(2) Paving a flexible perovskite battery piece on the surface of the upper adhesive film in the step (1);
(3) Paving a lower adhesive film on the surface of the flexible perovskite battery piece in the step (2);
(4) Paving a bottom water oxygen barrier film on the surface of the lower adhesive film in the step (3);
(5) Laminating the materials paved in the step (4) to obtain the flexible perovskite battery.
Preferably, in the step (5), the lamination condition is that the temperature is 105-120 ℃, the pressure is 60-90KPa and the time is 10-30min, and further preferably, the lamination condition is that the temperature is 115 ℃, the pressure is 80KPa and the time is 20min.
The beneficial effects of the invention are as follows:
(1) According to the invention, the adhesion enhancement layer is introduced between the butyl rubber and the water-oxygen barrier film, and meanwhile, the adhesion enhancement layer consists of the polyurethane hot melt adhesive, the silane coupling agent, the ultraviolet absorbent and the free radical scavenger in a specific proportion, so that better interface adhesion of the butyl rubber and the water-oxygen barrier film can be realized in the lamination process, the adhesion force is high, the construction is simple, and the cost is low. And the width of the bonding enhancement layer is controlled to be smaller than that of the butyl adhesive layer, so that the butyl adhesive can effectively prevent the water vapor at the edge from penetrating into the battery, and the problem of layering and water permeability caused by low bonding force between the edge of the butyl adhesive and the water-oxygen barrier film can be solved.
(2) After the polyurethane hot melt adhesive, the silane coupling agent, the ultraviolet absorbent and the free radical scavenger are compounded according to a specific proportion, the interfacial adhesion after initiation and aging is obviously improved, the material has longer service life, and the long-term working stability of the adhesion enhancement layer at low temperature and high temperature is ensured.
(3) The UV light conversion adhesive film is adopted by the upper adhesive film, so that the photoelectric conversion efficiency of the flexible perovskite battery can be improved, the ultraviolet irradiation stability of the packaged flexible perovskite battery can be effectively improved, the interface adhesion between the water-oxygen barrier and the whole surface of the perovskite battery piece is improved, and the service life of the battery is prolonged.
Drawings
FIG. 1 is a schematic structural view of a flexible perovskite battery of the invention;
In the figure, a 1-window water oxygen barrier film, a 2-upper adhesive film, a 3-flexible perovskite cell slice, a 4-lower adhesive film and a 5-bottom water oxygen barrier film are shown.
FIG. 2 is a top view of the edge structure of the modified water-oxygen barrier film of the present invention;
in the figure, 11-base layer water oxygen barrier material and 13-butyl adhesive layer.
FIG. 3 is a cross-sectional view of a modified water oxygen barrier film of the present invention;
in the figure, the water oxygen barrier material of the 11-base layer, the bonding enhancement layer of the 12-base layer and the 13-butyl adhesive layer are shown.
Detailed Description
The following non-limiting examples will enable those of ordinary skill in the art to more fully understand the invention and are not intended to limit the invention in any way. The following is merely exemplary of the scope of the invention as claimed and many variations and modifications of the invention will be apparent to those skilled in the art in light of the disclosure, which should be construed to fall within the scope of the invention as claimed.
The invention is further illustrated by means of the following specific examples. The various chemical reagents used in the examples of the present invention were obtained by conventional commercial means unless otherwise specified. Unless otherwise specified, the contents are mass contents in the following. Unless otherwise indicated, it is understood that it is carried out at room temperature.
In the following examples:
The base layer water oxygen barrier material was 35cm by 35cm in size (U.S. 3M, UBF 512).
The butyl tape WVTR is less than or equal to 3X 10 -2g/m2/day (test condition 38 ℃,100 RH%).
UV light-converting adhesive films, saiwu Raybo series thermoplastic POE (polyolefin elastomer), gram weight 500g/m 2, adhesive film dimensions 320mm x 320mm.
The lower adhesive film is thermoplastic polyolefin elastomer (TPO) with gram weight of 100g/m 2 and adhesive film size of 320mm multiplied by 320mm.
The model SF-01-35X 35 of the flexible perovskite battery piece.
The polyurethane hot melt adhesive (SUNTIP 2011L) is a liquid reaction type single-component polyurethane hot melt adhesive, which is prepared by taking a polyol mixture as a soft chain segment and excessive diisocyanate as a hard chain segment through reaction. The viscosity is 10000-20000 mPa.s (25 ℃). The hot melt adhesive has excellent adhesive strength to PET film and other base materials, excellent high temperature and high humidity resistance and high temperature peeling strength.
Example 1
(1) Coating liquid for coating an adhesion enhancing layer on the periphery of the inner surface of the base layer water-oxygen barrier material (35 cm×35 cm), the formulation of the coating liquid for the adhesion enhancing layer is as follows:
Polyurethane hot melt adhesive (SUNTIP 2011L) 85%
Silane coupling agent (vinyltris (. Beta. -methoxyethoxy) silane) 5%
UV absorber (BASF Tinuvin 479) 5%
5% Of free radical scavenger (BASF Tinuvin 123),
Curing at 40RH% humidity for 60min, and completely curing to obtain an adhesive reinforcing layer with width of 5mm and thickness of 5 μm.
And (3) applying a butyl adhesive tape on the surface of the adhesion enhancement layer, wherein the width is 10mm, and the thickness is 650 mu m, so as to obtain the modified water-oxygen barrier film.
(2) The water-oxygen barrier film is used as a window transparent water-oxygen barrier film, and an upper adhesive film (the upper adhesive film is UV light conversion adhesive films, saiwu Raybo series) is paved on the surface of the window transparent water-oxygen barrier film, and the gram weight is 500g/m 2.
(3) And placing a flexible perovskite battery piece on the surface of the upper adhesive film.
(4) And paving a lower adhesive film on the surface of the flexible perovskite battery, wherein the gram weight is 100g/m 2.
(5) And paving a water-oxygen barrier film on the surface of the lower adhesive film to serve as a bottom water-oxygen barrier film.
(6) The laid material is put into a laminating machine, the laminating temperature is 115 ℃, the laminating pressure is 80KPa, and the laminating time is 20min. And cooling to complete the flexible perovskite solar cell package.
The structure of the obtained flexible perovskite battery is shown in figure 1, the flexible perovskite battery sequentially comprises a window water-oxygen barrier film 1, an upper adhesive film 2, a flexible perovskite battery piece 3, a lower adhesive film 4 and a bottom water-oxygen barrier film 5 from top to bottom, wherein the window water-oxygen barrier film 1 and the bottom water-oxygen barrier film 5 are both modified water-oxygen barrier films, as shown in figure 2, the modified water-oxygen barrier films comprise a base water-oxygen barrier material 11, an adhesion enhancement layer 12 and a butyl adhesive layer 13, the adhesion enhancement layer is coated on the periphery of the surface of the base water-oxygen barrier material, and the base water-oxygen barrier material and the butyl adhesive layer are adhered through the adhesion enhancement layer.
Example 2
Unlike example 1, the coating liquid formulation of the adhesion enhancing layer was as follows:
polyurethane hot melt adhesive (SUNTIP 2011L) 90%
Silane coupling agent (vinyltris (. Beta. -methoxyethoxy) silane) 4%
UV absorber (BASF Tinuvin 479) 4%
2% Of free radical scavenger (BASF Tinuvin 123),
Curing at 40RH% humidity for 60min, and completely curing to obtain an adhesive reinforcing layer with width of 5mm and thickness of 5 μm.
The remainder was the same as in example 1.
Example 3
Unlike example 2, the coating liquid formulation of the adhesion enhancing layer was as follows:
polyurethane hot melt adhesive (SUNTIP 2011L) 93%
Silane coupling agent (vinyltris (. Beta. -methoxyethoxy) silane) 3%
UV absorber (BASF Tinuvin 479) 3%
1% Of free radical scavenger (BASF Tinuvin 123),
Curing at 40RH% humidity for 60min, and completely curing to obtain an adhesive reinforcing layer with width of 5mm and thickness of 5 μm.
The remainder was the same as in example 2.
Example 4
Unlike example 2, the coating liquid formulation of the adhesion enhancing layer was as follows:
polyurethane hot melt adhesive (SUNTIP 2011L) 95%
Silane coupling agent (vinyltris (. Beta. -methoxyethoxy) silane) 2%
UV absorber (BASF Tinuvin 479) 1%
2% Of free radical scavenger (BASF Tinuvin 123),
Curing at 40RH% humidity for 60min, and completely curing to obtain an adhesive reinforcing layer with width of 5mm and thickness of 5 μm.
The remainder was the same as in example 2.
Example 5
Unlike example 2, the coating liquid formulation of the adhesion enhancing layer was as follows:
polyurethane hot melt adhesive (SUNTIP 2011L) 97%
Silane coupling agent (vinyltris (. Beta. -methoxyethoxy) silane) 1%
UV absorber (BASF Tinuvin 479) 1%
1% Of free radical scavenger (BASF Tinuvin 123),
Curing at 40RH% humidity for 60min, and completely curing to obtain an adhesive reinforcing layer with width of 5mm and thickness of 5 μm.
The remainder was the same as in example 2.
Example 6
Unlike example 2, the silane coupling agent was γ -methacryloxypropyl trimethoxysilane, and the remainder was the same as in example 2.
Example 7
Unlike example 2, the silane coupling agent was vinyltriacetoxy silane, and the remainder was the same as in example 2.
Example 8
Unlike example 1, the silane coupling agent was vinyltriacetoxy silane, and the remainder was the same as in example 1.
Example 9
Unlike example 2, the ultraviolet absorber was BASF Tinuvin 400, the radical scavenger was BASF Tinuvin 123, and the remainder was the same as in example 2.
Example 10
Unlike example 2, the adhesion enhancing layer had a thickness of 10 μm, and the remainder was the same as in example 2.
Example 11
Unlike example 2, the adhesion enhancing layer had a thickness of 2 μm, and the remainder was the same as in example 2.
Example 12
Unlike example 2, the adhesion enhancing layer had a thickness of 1 μm, and the remainder was the same as in example 2.
Comparative example 1
Unlike example 2, comparative example 1 did not prepare an adhesion enhancing layer, and the rest was the same as example 2.
Comparative example 2
Different from example 2, a non-UV light-converting thermoplastic POE adhesive film is paved on the surface of the transparent water-oxygen barrier film of the window, the gram weight is 450g/m 2, the adhesive film size is 320mm multiplied by 320mm, and the rest is the same as example 2.
Comparative example 3
Unlike example 2, the coating liquid formulation of the adhesion enhancing layer was as follows:
polyurethane hot melt adhesive (SUNTIP 2011L) 98%
Silane coupling agent (vinyltris (. Beta. -methoxyethoxy) silane) 1%
UV absorber (BASF Tinuvin 479) 0.5%
0.5% Of free radical scavenger (BASF Tinuvin 123),
Curing at 40RH% humidity for 60min, and completely curing to obtain an adhesive reinforcing layer with width of 5mm and thickness of 5 μm.
The remainder was the same as in example 2.
Comparative example 4
Unlike example 2, the adhesion enhancing layer had a thickness of 15 μm, and the remainder was the same as in example 2.
Comparative example 5
Unlike example 2, the adhesion enhancing layer had a thickness of 0.5 μm, and the remainder was the same as in example 2.
Comparative example 6
Unlike example 2, the coating liquid formulation of the adhesion enhancing layer was as follows:
polyurethane hot melt adhesive (SUNTIP 2011L) 90%
Silane coupling agent (vinyltris (. Beta. -methoxyethoxy) silane) 4%
An ultraviolet absorber (BASF Tinuvin 479) 6%,
Curing at 40RH% humidity for 60min, and completely curing to obtain an adhesive reinforcing layer with width of 5mm and thickness of 5 μm.
The remainder was the same as in example 2.
Results testing
The flexible perovskite batteries prepared in the above examples and comparative examples were subjected to an interlayer adhesion test of a butyl rubber and a water-oxygen barrier film, a photoelectric conversion efficiency test, and an interlayer adhesion test and a photoelectric conversion efficiency test after aging respectively by a damp-heat test DH1000 (ultra-high stability is required for continuous operation for more than 1000 hours in a state of 85 ℃ and 85% RH) and an ultraviolet irradiation amount UV120kWh/m 2.
The testing method comprises the following steps:
(1) Interlayer adhesion test was performed according to GB/T2790-1995, 180℃peel strength test method of the adhesive.
(2) The photoelectric conversion efficiency test is carried out according to GB/T34160-2017 'method for detecting photoelectric conversion efficiency of photovoltaic component for ground'.
The test results were as follows:
Table 1.
Table 2.
The result shows that the flexible perovskite battery prepared by the embodiment of the invention has better improved binding force and durability. As can be seen from the results of the comparative examples, the arrangement of the adhesion enhancing layer, the composition formulation and the thickness have significant effects on the thickness of the battery, and in addition, the selection of the non-light-converting adhesive film for the upper adhesive film significantly reduces the photoelectric conversion efficiency.

Claims (13)

1. The flexible perovskite battery is characterized by sequentially comprising a window water-oxygen barrier film, an upper adhesive film, a flexible perovskite battery piece, a lower adhesive film and a bottom water-oxygen barrier film from top to bottom, wherein the window water-oxygen barrier film and the bottom water-oxygen barrier film are modified water-oxygen barrier films;
The upper adhesive film is a UV light conversion thermoplastic polyolefin adhesive film;
The modified water-oxygen barrier film comprises a base water-oxygen barrier material, an adhesion enhancement layer and a butyl adhesive layer, wherein the adhesion enhancement layer is coated on the periphery of the surface of the base water-oxygen barrier material, the base water-oxygen barrier material and the butyl adhesive layer are adhered through the adhesion enhancement layer, the thickness of the adhesion enhancement layer is 1-10 mu m, and the thickness of the butyl adhesive layer is 50-1000 mu m;
The base layer water-oxygen barrier material is a transparent water-oxygen barrier material or a non-transparent water-oxygen barrier material, the transparent water-oxygen barrier material comprises a weather-resistant layer, a coating substrate and a water-oxygen barrier layer, and the non-transparent water-oxygen barrier material comprises an outer weather-resistant layer, an aluminum foil layer, a polymer substrate and an inner weather-resistant layer;
The adhesion enhancement layer consists of, by weight, 85-97 parts of polyurethane hot melt adhesive, 1-5 parts of silane coupling agent, 1-5 parts of ultraviolet absorber and 1-5 parts of free radical scavenger;
The adhesive enhancement layer is arranged at the peripheral edge of the surface of the water-oxygen barrier material of the base layer, the width is 5mm, and the width of the butyl adhesive layer is 10-20mm.
2. The flexible perovskite battery of claim 1, wherein the adhesion enhancing layer has a thickness of 2-5 μιη.
3. The flexible perovskite battery of claim 1, wherein in the transparent water oxygen barrier material:
the film-coated substrate is at least one of polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polyethylene, polypropylene, polyimide and polytetrafluoroethylene, the thickness of the film-coated substrate is 5-500 mu m, the water-oxygen barrier layer is an inorganic barrier layer or a pair layer containing an inorganic barrier layer or an organic barrier layer, the weather-resistant layer is a weather-resistant coating or a weather-resistant film layer, the weather-resistant coating is one or more of fluorine-containing coating, acrylic coating, polyester coating, epoxy coating and polyurethane coating, and the weather-resistant film layer is a film containing polyvinyl fluoride, polyvinylidene fluoride, ethylene-tetrafluoroethylene copolymer, ethylene-chlorotrifluoroethylene copolymer or modified polyvinyl chloride;
The non-transparent water-oxygen barrier material comprises an aluminum foil layer with the thickness of 10-40 mu m, a polymer base material of polyethylene terephthalate, and a weather-resistant layer selected from a weather-resistant coating or a weather-resistant film layer.
4. The flexible perovskite battery of claim 1, wherein the polyurethane hot melt adhesive has a viscosity of 3000-30000 mPa-s.
5. The flexible perovskite battery according to claim 1, wherein the silane coupling agent is selected from at least one of vinyltrimethoxysilane, vinyltris (β -methoxyethoxy) silane, vinyltriisopropoxysilane, vinyltriethoxysilane, γ -methacryloxypropyl trimethoxysilane, vinyltriacetoxysilane;
The ultraviolet absorber is at least one selected from the group consisting of hydroxyphenol benzotriazoles and hydroxyphenol benzotriazines;
The free radical scavenger is a hindered amine free radical scavenger;
the butyl adhesive layer is a butyl adhesive tape or is prepared by coating butyl adhesive.
6. The flexible perovskite battery according to claim 1, wherein the thickness of the UV light-converting thermoplastic polyolefin adhesive film is 50-500 μm, the transmittance of the UV light-converting thermoplastic polyolefin adhesive film under the light with the wavelength of 380-1100nm is more than or equal to 85%, and the transmittance in the UV wave band of 280-380nm is less than 0.5%;
The lower adhesive film is a thermoplastic polyolefin adhesive film with the thickness of 50-500 mu m, and the transmittance of the thermoplastic polyolefin adhesive film under the light with the wavelength of 380-1100nm is more than or equal to 85%;
The flexible perovskite battery piece comprises a supporting base material, a perovskite battery device functional layer and a conductive adhesive tape;
The supporting base material is at least one selected from polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polyethylene, polypropylene and polyimide, the thickness of the supporting base material is 20-300 mu m, and the conductive adhesive tape is tinned copper tape containing pressure-sensitive conductive adhesive.
7. A method of manufacturing a flexible perovskite battery as claimed in any one of claims 1 to 6, comprising the steps of:
(1) Paving an adhesive film on the surface of the water-oxygen barrier film of the window;
(2) Paving a flexible perovskite battery piece on the surface of the upper adhesive film in the step (1);
(3) Paving a lower adhesive film on the surface of the flexible perovskite battery piece in the step (2);
(4) Paving a bottom water oxygen barrier film on the surface of the lower adhesive film in the step (3);
(5) Laminating the materials paved in the step (4) to obtain the flexible perovskite battery.
8. The method of manufacturing according to claim 7, wherein the method of manufacturing the bottom water oxygen barrier film and the window water oxygen barrier film comprises the steps of:
(1) Coating the peripheral edge of the surface of the water-oxygen barrier film with coating liquid prepared by the adhesion enhancing layer, and curing completely under moisture;
(2) And (3) coating butyl glue or pasting butyl adhesive tape on the upper surface of the cured bonding enhancement layer to form a butyl adhesive layer.
9. The application of the modified water-oxygen barrier film in the encapsulation of the perovskite battery is characterized in that the modified water-oxygen barrier film comprises a base water-oxygen barrier material, an adhesion enhancement layer and a butyl adhesive layer, wherein the adhesion enhancement layer is coated on the periphery of the surface of the base water-oxygen barrier material, the base water-oxygen barrier material and the butyl adhesive layer are adhered through the adhesion enhancement layer, the thickness of the adhesion enhancement layer is 1-10 mu m, and the thickness of the butyl adhesive layer is 50-1000 mu m;
The base layer water-oxygen barrier material is a transparent water-oxygen barrier material or a non-transparent water-oxygen barrier material, the transparent water-oxygen barrier material comprises a weather-resistant layer, a coating substrate and a water-oxygen barrier layer, and the non-transparent water-oxygen barrier material comprises an outer weather-resistant layer, an aluminum foil layer, a polymer substrate and an inner weather-resistant layer;
The adhesion enhancement layer consists of, by weight, 85-97 parts of polyurethane hot melt adhesive, 1-5 parts of silane coupling agent, 1-5 parts of ultraviolet absorber and 1-5 parts of free radical scavenger;
The adhesive enhancement layer is arranged at the peripheral edge of the surface of the water-oxygen barrier material of the base layer, the width is 5mm, and the width of the butyl adhesive layer is 10-20mm.
10. The use according to claim 9, wherein the adhesion enhancing layer has a thickness of 2-5 μm.
11. The use according to claim 9, wherein in the transparent water-oxygen barrier material:
the film-coated substrate is at least one of polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polyethylene, polypropylene, polyimide and polytetrafluoroethylene, the thickness of the film-coated substrate is 5-500 mu m, the water-oxygen barrier layer is an inorganic barrier layer or a pair layer containing an inorganic barrier layer or an organic barrier layer, the weather-resistant layer is a weather-resistant coating or a weather-resistant film layer, the weather-resistant coating is one or more of fluorine-containing coating, acrylic coating, polyester coating, epoxy coating and polyurethane coating, and the weather-resistant film layer is a film containing polyvinyl fluoride, polyvinylidene fluoride, ethylene-tetrafluoroethylene copolymer, ethylene-chlorotrifluoroethylene copolymer or modified polyvinyl chloride;
The non-transparent water-oxygen barrier material comprises an aluminum foil layer with the thickness of 10-40 mu m, a polymer base material of polyethylene terephthalate, and a weather-resistant layer selected from a weather-resistant coating or a weather-resistant film layer.
12. The use according to claim 9, characterized in that the polyurethane hotmelt has a viscosity of 3000-30000 mPa-s.
13. The use according to claim 9, wherein the silane coupling agent is selected from at least one of vinyltrimethoxysilane, vinyltris (β -methoxyethoxy) silane, vinyltriisopropoxysilane, vinyltriethoxysilane, γ -methacryloxypropyl trimethoxysilane, vinyltriacetoxysilane;
The ultraviolet absorber is at least one selected from the group consisting of hydroxyphenol benzotriazoles and hydroxyphenol benzotriazines;
The free radical scavenger is a hindered amine free radical scavenger;
the butyl adhesive layer is a butyl adhesive tape or is prepared by coating butyl adhesive.
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CN104884214A (en) * 2013-01-18 2015-09-02 Sika技术股份公司 Method for producing a lining segment with a thermoplastic barrier layer
CN112510152A (en) * 2020-12-15 2021-03-16 华能新能源股份有限公司 Perovskite solar cell packaging structure and packaging method thereof

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JP2012080060A (en) * 2010-09-07 2012-04-19 Mitsubishi Chemicals Corp Organic solar battery module
CN207009447U (en) * 2017-03-31 2018-02-13 乐凯胶片股份有限公司 A solar cell double glass module
CN118574436A (en) * 2024-05-28 2024-08-30 湖北万度光能有限责任公司 Encapsulation structure, encapsulation method and application of perovskite solar cell

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CN104884214A (en) * 2013-01-18 2015-09-02 Sika技术股份公司 Method for producing a lining segment with a thermoplastic barrier layer
CN112510152A (en) * 2020-12-15 2021-03-16 华能新能源股份有限公司 Perovskite solar cell packaging structure and packaging method thereof

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