CN111326601A - Photovoltaic module plate, preparation method thereof and photovoltaic module - Google Patents
Photovoltaic module plate, preparation method thereof and photovoltaic module Download PDFInfo
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- CN111326601A CN111326601A CN201811540295.6A CN201811540295A CN111326601A CN 111326601 A CN111326601 A CN 111326601A CN 201811540295 A CN201811540295 A CN 201811540295A CN 111326601 A CN111326601 A CN 111326601A
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 36
- 239000011737 fluorine Substances 0.000 claims abstract description 36
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- 229920000728 polyester Polymers 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 20
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- 238000003851 corona treatment Methods 0.000 claims description 6
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- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 claims description 4
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 4
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- UQEAIHBTYFGYIE-UHFFFAOYSA-N hexamethyldisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)C UQEAIHBTYFGYIE-UHFFFAOYSA-N 0.000 description 2
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- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 2
- MARUHZGHZWCEQU-UHFFFAOYSA-N 5-phenyl-2h-tetrazole Chemical compound C1=CC=CC=C1C1=NNN=N1 MARUHZGHZWCEQU-UHFFFAOYSA-N 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0216—Coatings
- H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02167—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/049—Protective back sheets
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention belongs to the technical field of photovoltaic materials, and particularly relates to a photovoltaic module plate, a preparation method thereof and a photovoltaic module. The preparation method of the plate comprises the following steps: activating the base material; coating a fluorine coating on one surface of the activated substrate, and coating a polyester coating on the other surface of the activated substrate; the barrier layer is deposited on the surface of the polyester coating by adopting a film coating process, the photovoltaic module plate provided by the invention does not comprise a bonding layer, the number of layers is reduced, the cost is reduced, the problems that the bonding force between functional layers is poor and the use requirement cannot be met are solved, and the heat dissipation capacity of the module is improved.
Description
Technical Field
The invention belongs to the technical field of photovoltaic materials, and particularly relates to a photovoltaic module plate, a preparation method thereof and a photovoltaic module.
Background
The flexible solar cell is one of thin film solar cells, and generally comprises three parts, namely a cell front plate, a cell core assembly and a cell back plate. The flexible solar cell has the advantages of light weight, folding property, curling property, portability and the like, can be adhered to the surfaces of other objects (such as automobile glass, clothes and the like) and integrated on a window or a roof, an outer wall or an inner wall and the like, provides infinite possibility for the field of mobile energy, and is more and more valued by people.
A thin film solar cell comprising: amorphous silicon, microcrystalline silicon, copper indium gallium selenide, cadmium telluride, dye sensitized, organic, and the like. No matter what kind of solar cell, the solar cell module needs to be prepared, and the semiconductor cell can be effectively protected and packaged to generate electricity stably for a long time, so that a new requirement is provided for the packaging barrier property.
The front plate of the flexible solar cell module is directly connected to the air, and is in a harsh environment, and the blocking and packaging performance of the front plate is particularly important in order to ensure the normal use of the thin-film solar cell module. In the prior art, a front plate of a thin film mobile energy type thin film solar cell module is generally packaged by an EVA (ethylene vinyl acetate) adhesive film, and ETFE (ethylene-vinyl acetate) and a water blocking film are bonded together to form a flexible front plate. The use of the adhesive layer generally has the following problems of 1, high cost; 2. poor heat dissipation of the assembly due to the presence of the adhesive layer; 3. the aging of the adhesive layer can also cause the barrier and packaging performance of the plate to be poor, and the service life of the photovoltaic module is influenced.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of high cost caused by using a large amount of adhesive, influence on the barrier and packaging performance of the plate due to aging of an adhesive layer and the like in the prior art, so that the photovoltaic module plate, the preparation method thereof and the photovoltaic module are provided.
In order to solve the technical problems, the invention adopts the following technical scheme:
a preparation method of a photovoltaic module plate comprises the following steps:
activating the base material;
coating a fluorine coating on one surface of the activated substrate, and coating a polyester coating on the other surface of the activated substrate;
and depositing a barrier layer on the surface of the polyester coating by adopting a coating process.
Further, the activation treatment is a plasma corona treatment or a plasma surface grafting treatment.
Further, the activation treatment is carried out until the surface tension of the substrate surface reaches 58dyn/cm (dyne/cm) or more.
Further, the fluorine coating layer is obtained by roll-to-roll coating or planar coating.
Further, the two processes of coating the fluorine coating and coating the polyester coating are carried out simultaneously or separately.
Further, the coating process is selected from magnetron sputtering, PECVD technology or ALD technology.
Further, the barrier layer is an inorganic barrier layer or an inorganic-organic barrier layer.
Further, the material of the fluorine coating layer is selected from polyvinylidene fluoride resin, polytetrafluoroethylene or polyperfluorinated ethylene;
and/or, the material of the polyester coating is selected from polyacrylic resin or polyurethane;
and/or, the material of the inorganic barrier layer is selected from SiOX、Al2O3Any one of AlN and SiN;
and/or, the material of the organic barrier layer includes, but is not limited to, Parylene C (Parylene) or polypropylene resin.
Further, the thickness of the substrate is 50 μm to 150 μm;
and/or the thickness of the fluorine coating is 50nm-5 μm;
and/or the thickness of the polyester coating is below 100 nm;
and/or the thickness of the barrier layer is less than 5 μm.
A photovoltaic module plate comprises a base material, a fluorine coating coated on one side of the base material, and a polyester coating and a barrier layer sequentially coated on the other side of the base material;
further, the photovoltaic module panel does not include a bonding layer;
further, the barrier layer is an inorganic barrier layer or an inorganic-organic barrier layer;
further, the inorganic-organic barrier layers are alternately arranged by inorganic barrier layers and organic barrier layers.
A photovoltaic module comprises a front plate, a back plate and a photovoltaic chip arranged between the front plate and the back plate, wherein the photovoltaic module plate prepared by the preparation method or the photovoltaic module plate is used as the front plate.
The photovoltaic module plate directly faces to sunlight, so that the light transmittance of the base material must be ensured, an optical PET base material with the light transmittance (380 nm-1100 nm) of more than 90% is selected, and the base material can also be PEN, PA or PI, but is not limited to the materials.
The technical scheme of the invention has the following advantages:
1. according to the preparation method of the photovoltaic module plate, firstly, the base material is subjected to activation treatment, so that the surface tension of the base material is improved to be more than 58 gyn/cm; then, one surface of the activated substrate is coated with a fluorine coating, the other surface of the activated substrate is coated with a polyester coating, the two coatings are combined with the substrate through chemical bonds, so that the combination is firmer, the layering phenomenon cannot occur, the problem of a physical interface is solved, and the problem of adhesive force caused by the use of an adhesive film layer/adhesive is avoided; and meanwhile, coating a polyester coating to prepare for depositing the barrier layer, and finally depositing the barrier layer through a coating process, wherein the surface structure of the barrier layer obtained by the coating process is flat and compact and has good flexibility.
According to the preparation method of the photovoltaic module plate, the two processes of coating the fluorine coating and coating the polyester coating are carried out simultaneously or separately, and the preparation method can be determined according to the equipment processing condition and is flexible to operate.
According to the preparation method of the photovoltaic module plate, the coating process can be selected from magnetron sputtering, PECVD technology or ALD technology, and the specific process scheme is that the water vapor resistance of the product is realized according to actual applicationThe interval rate requirement. If the water vapor barrier rate of the product is required to be 10-2～10-3g/m2And day, a PECVD technology is selected, and the advantages of smoother and more compact surface structure of the product and better flexibility of the film are achieved.
According to the preparation method of the photovoltaic module board, the barrier layer is composed of an inorganic barrier layer or an inorganic barrier layer and an organic barrier layer. The coating process of combining the inorganic coating with the organic coating can adjust the binding force of the film layer and adjust the surface of the film layer to be beneficial to the regrowth of the film.
2. The photovoltaic module board provided by the invention is prepared by the process provided by the invention, and the photovoltaic module board has environmental adaptability and barrier property, and the thickness of the traditional board is reduced. The invention realizes the integration of the fluorine coating and the polyester coating on the surface of the base material directly, and then the barrier layer is deposited on the surface of the polyester coating, thereby canceling the binder layer, being beneficial to simplifying the process, reducing the cost, improving the binding force among functional layers and improving the heat dissipation capacity of the plate.
The photovoltaic module board provided by the invention can be used as a front plate of a photovoltaic module, has the function of a traditional composite front plate, and not only meets the environmental erosion resistance, but also meets the water vapor barrier property; according to the photovoltaic module plate provided by the invention, the double-sided coating and the base material are bonded by Van der Waals force or chemically bonded, so that the problem of a physical interface is solved; meanwhile, the fluorine coating as the outermost layer of the front plate has good environmental erosion resistance and plays a good role in protecting the battery chip; the water vapor blocking layer can effectively prevent water vapor and moisture from invading the battery chip, and the service life of the battery chip is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a process for preparing a photovoltaic module panel in accordance with one embodiment of the present invention;
FIG. 2 is a schematic structural view of a flexible photovoltaic module sheet of the present invention;
reference numerals:
1-a fluorine coating; 2-a substrate; 3-polyester coating; 4-barrier layer.
Detailed Description
The following examples are provided to further understand the present invention, not to limit the scope of the present invention, but to provide the best mode, not to limit the content and the protection scope of the present invention, and any product similar or similar to the present invention, which is obtained by combining the present invention with other prior art features, falls within the protection scope of the present invention.
The examples do not show the specific experimental steps or conditions, and can be performed according to the conventional experimental steps described in the literature in the field. The reagents or instruments used are not indicated by manufacturers, and are all conventional reagent products which can be obtained commercially.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
This embodiment provides a photovoltaic module panel, by last to include in proper order down: fluorine coating, PET substrate, polyester coating and barrier layer, the barrier layer is inorganic barrier layer.
The specific preparation method of the photovoltaic module plate comprises the following steps:
(1) selecting a PET substrate with the thickness of 100 mu m, and carrying out plasma corona treatment on the front surface and the back surface of the PET substrate by using argon plasma and oxygen plasma under the condition that the vacuum degree is 2000Pa to finally enable the surface tension of the PET substrate to reach 58 dyn/cm;
(2) and (3) carrying out a roll-to-roll coating process on the front surface of the activated PET substrate to generate a polytetrafluoroethylene coating, and drying and curing at 110 ℃ to obtain the fluorine coating with the thickness of 1 mu m.
(3) And coating a polyacrylic resin coating with the thickness of 50nm on the reverse side of the PET substrate coated with the fluorine coating.
(4) Depositing a SiN layer on the surface of the polyacrylic resin coating by an ALD (atomic layer deposition) process through coating, wherein the thickness of the SiN layer is 100nm, and obtaining 4 × 10-4g/m2Day's aging resistant water barrier film. The conditions of the coating deposition are as follows: the reaction precursors are nitrogen and trimethylaluminum, and the temperature of the chamber is 80 ℃.
Example 2
This embodiment provides a photovoltaic module panel, by last to include in proper order down: a fluorine coating, a PEN substrate, a polyester coating and a barrier layer, said barrier layer consisting of an inorganic-organic barrier layer.
The specific preparation method of the photovoltaic module plate comprises the following steps:
(1) selecting a PEN substrate with the thickness of 120 mu m, and carrying out plasma corona treatment on the front surface and the back surface of the PEN substrate by using argon plasma and oxygen plasma under the condition that the vacuum degree is 1800Pa so as to enable the surface tension of the PEN substrate to reach 58 dyn/cm;
(2) and (3) carrying out roll-to-roll coating on the front surface of the PEN substrate after activation treatment to generate a polyvinylidene fluoride resin coating, and drying and curing at 120 ℃ to obtain a fluorine coating with the thickness of 100 nm.
(3) And coating a polyacrylic resin coating with the thickness of 50nm on the reverse side of the PEN substrate coated with the fluorine coating.
(4) Depositing Al on the surface of the polyacrylic resin coating by ALD (atomic layer deposition) process2O3Layer deposition chamber temperature 80 deg.C, and plating thickness 50nm to obtain 3 × 10-4g/m2Day's aging resistant water barrier film. On the basis, an organic layer Parylene C is evaporated by a CVD process, the thickness of the evaporated organic layer Parylene C is 1 mu m, and the water vapor barrier rate is 10-5And the magnitude of the water film is an ageing-resistant water film.
Example 3
This embodiment provides a photovoltaic module panel, by last to include in proper order down: the coating comprises a fluorine coating, a PET substrate, a polyester coating and a barrier layer, wherein the barrier layer is an inorganic-organic barrier layer.
The specific preparation method of the photovoltaic module plate comprises the following steps:
(1) selecting a PET substrate with the thickness of 120 mu m, and carrying out plasma surface grafting treatment on the front side and the back side of the PET substrate, wherein the specific treatment conditions are as follows: the grafting monomer is NH3DBD medium is adopted to block discharge treatment, Ar plasma participates in reaction, amino active groups which are arranged in a directional mode are generated on the surface of the PET base material, and finally the surface tension of the base material reaches 60 dyn/cm;
(2) generating a polyvinylidene fluoride resin coating on the front surface of the activated PET substrate through a plane coating process, and drying and curing at 110 ℃ to obtain a fluorine coating with the thickness of 100 nm.
(3) And coating a polyacrylic resin coating on the reverse side of the PET substrate coated with the fluorine coating, wherein the thickness of the polyacrylic resin coating is 80 nm.
(4) Depositing SiO on the surface of the polyacrylic resin coating by adopting a magnetron sputtering process through film coating2The thickness of the layer is 100nm, the condition of the coating deposition is that the magnetron sputtering temperature is 150 ℃, silicon target reactive sputtering is adopted, oxygen is introduced to participate in the reaction, and SiO is deposited2Coating organic polypropylene resin with thickness of 0.5 μm by surface coating process, and aging and drying at 80 deg.C to obtain 5 × 10-2g/m2Day's aging resistant water barrier film.
Example 4
This embodiment provides a photovoltaic module panel, by last to include in proper order down: the coating comprises a fluorine coating, a PET substrate, a polyester coating and a barrier layer, wherein the barrier layer consists of an inorganic barrier layer.
The specific preparation method of the photovoltaic module plate comprises the following steps:
(1) selecting a PET substrate with the thickness of 150 mu m, carrying out plasma corona treatment on the front surface and the back surface of the PET substrate, wherein the specific treatment conditions are 2000Pa and introducing O at normal temperature2Plasma treatment, and finally the surface tension of the film reaches 60 dyn/cm;
(2) and (3) carrying out a roll-to-roll coating process on the front surface of the activated PET substrate to generate a polytetrafluoroethylene coating, and drying and curing at 110 ℃ to obtain the fluorine coating with the thickness of 1 mu m.
(3) And coating a polyurethane resin coating with the thickness of 100nm on the reverse side of the PET substrate coated with the fluorine coating.
(4) Depositing a SiOx layer on the surface of the polyurethane coating by a Roll-to-Roll PECVD process under the conditions of monomer heating temperature of 50 ℃ and vacuum degree of 1.2Pa (HMDSO: O) and with the thickness of 100nm21:2 to 1:3) under the conditions, 3.1 × 10 can be obtained-2g/m2Day's aging resistant water barrier film.
Example 5
This embodiment provides a photovoltaic module panel, by last to include in proper order down: the coating comprises a fluorine coating, a PET substrate, a polyester coating and a barrier layer, wherein the barrier layer is an inorganic-organic barrier layer.
The specific preparation method of the photovoltaic module plate comprises the following steps:
(1) selecting PET with the thickness of 120 mu mCarrying out plasma surface grafting treatment on the front and back surfaces of the substrate under the specific treatment condition that Ar carries NH3·H2O is grafted with amino groups, and the surface tension of the O is finally 60 dyn/cm;
(2) and (3) generating a polyvinylidene fluoride resin coating on the front surface of the activated PET substrate through a plane coating process, and drying and curing at 100 ℃ to obtain a fluorine coating with the thickness of 100 nm.
(3) And coating a polyacrylic resin coating on the reverse side of the PET substrate coated with the fluorine coating, wherein the thickness of the polyacrylic resin coating is 80 nm.
(4) Depositing a SiOx layer on the surface of the polyurethane coating by a Roll-to-Roll PECVD process under the conditions of monomer heating temperature of 50 ℃ and vacuum degree of 1.2Pa (HMDSO: O) and with the thickness of 50nm21: 2); then continuously coating the organic layer polypropylene resin by a coating process, controlling the thickness to be 100nm, and alternately realizing 6 layers of organic/inorganic layers through the organic/inorganic layers with more than 3 cycles to obtain the organic/inorganic layers with the water vapor barrier rate less than 10-4～10-6g/m2Day's aging resistant water barrier film.
Example 6
This embodiment provides a photovoltaic module panel, by last to include in proper order down: fluorine coating, PET substrate, polyester coating and barrier layer, the barrier layer is inorganic barrier layer.
The specific preparation method of the photovoltaic module plate comprises the following steps:
(1) selecting a PET substrate with the thickness of 100 mu m, and carrying out plasma corona treatment on the front surface and the back surface of the PET substrate by using argon plasma and oxygen plasma under the condition that the vacuum degree is 2000Pa to finally enable the surface tension of the PET substrate to reach 58 dyn/cm;
(2) and coating a polyacrylic resin coating on the reverse side of the activated PET substrate, wherein the thickness of the polyacrylic resin coating is 50 nm.
(3) And (3) carrying out roll-to-roll coating on the front surface of the PET substrate coated with the polyacrylic resin coating to generate a polytetrafluoroethylene coating, and drying and curing at 110 ℃ to obtain the fluorine coating with the thickness of 1 mu m.
(4) Coating polyacrylic resin by ALD processThe surface of the layer was coated with a SiN layer having a thickness of 100nm to give 4.2 × 10-4g/m2Day's aging resistant water barrier film. The conditions of the coating deposition are as follows: the reaction precursors are nitrogen and trimethylaluminum, and the temperature of the chamber is 80 ℃.
Example 7
This embodiment provides a photovoltaic module panel, by last to include in proper order down: the coating comprises a fluorine coating, a PET substrate, a polyester coating and a barrier layer, wherein the barrier layer is an inorganic-organic barrier layer.
The specific preparation method of the photovoltaic module plate comprises the following steps:
(1) selecting a PET substrate with the thickness of 120 mu m, and carrying out plasma surface grafting treatment on the front side and the back side of the PET substrate, wherein the specific treatment conditions are as follows: the grafting monomer is NH3DBD medium is adopted to block discharge treatment, Ar plasma participates in reaction, amino active groups which are arranged in a directional mode are generated on the surface of the PET base material, and finally the surface tension of the base material reaches 60 dyn/cm;
(2) and simultaneously coating the front surface and the back surface of the activated PET substrate, generating a polyvinylidene fluoride resin coating on the front surface of the substrate in a plane coating process, wherein the thickness of the polyvinylidene fluoride resin coating is 100nm, coating a polyacrylate resin coating on the back surface, the thickness of the polyacrylate resin coating is 80nm, and drying and curing at 110 ℃ to obtain the double-surface coated PET substrate.
(3) Depositing SiO on the surface of the polyacrylic resin coating by adopting a magnetron sputtering process through film coating2The thickness of the layer is 100nm, the condition of the coating deposition is that the magnetron sputtering temperature is 150 ℃, silicon target reactive sputtering is adopted, oxygen is introduced to participate in the reaction, and SiO is deposited2Coating organic polypropylene resin with thickness of 0.5 μm by surface coating process, and aging and drying at 80 deg.C to obtain 4.8 × 10-2g/m2Day's aging resistant water barrier film.
Example 8
The embodiment provides a photovoltaic module, which comprises a front plate, a back plate and a photovoltaic chip arranged between the front plate and the back plate, wherein the photovoltaic module plate in any one of the above embodiments is used as the front plate.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.
Claims (10)
1. The preparation method of the photovoltaic module plate is characterized by comprising the following steps of:
activating the base material;
coating a fluorine coating on one surface of the activated substrate, and coating a polyester coating on the other surface of the activated substrate;
and depositing a barrier layer on the surface of the polyester coating by adopting a coating process.
2. The method for preparing a photovoltaic module sheet according to claim 1, wherein the activation treatment is a plasma corona treatment or a plasma surface grafting treatment.
3. The method for preparing a photovoltaic module board according to claim 1, wherein the activation treatment is carried out until the surface tension of the substrate surface reaches 58dyn/cm or more.
4. The method for producing a photovoltaic module sheet according to any one of claims 1 to 3, wherein the fluorine coating layer is obtained by roll-to-roll coating or plane coating;
and/or the two processes of coating the fluorine coating and coating the polyester coating are carried out simultaneously or separately.
5. The method for preparing a photovoltaic module plate according to claim 1, wherein the coating process is selected from magnetron sputtering, PECVD technology or ALD technology.
6. The method of claim 1, wherein the barrier layer is an inorganic barrier layer or an inorganic-organic barrier layer.
7. The method for preparing a photovoltaic module sheet according to claim 1, wherein the material of the fluorine coating layer is selected from polyvinylidene fluoride resin, polytetrafluoroethylene or polyperfluoroethylene;
and/or, the material of the polyester coating is selected from polyacrylic resin or polyurethane;
and/or, the material of the inorganic barrier layer is selected from SiOX、Al2O3Any one of AlN and SiN;
and/or the material of the organic barrier layer is selected from parylene or polypropylene resin.
8. The method of claim 1, wherein the substrate has a thickness of 50 μ ι η to 150 μ ι η;
and/or the thickness of the fluorine coating is 50nm-5 μm;
and/or the thickness of the polyester coating is below 100 nm;
and/or the thickness of the barrier layer is less than 5 μm.
9. The photovoltaic module plate is characterized by comprising a base material, a fluorine coating coated on one side of the base material, and a polyester coating and a barrier layer which are sequentially coated on the other side of the base material.
10. A photovoltaic module comprising a front sheet, a back sheet and a photovoltaic chip disposed between the front sheet and the back sheet, wherein the photovoltaic module sheet produced by the production method according to any one of claims 1 to 8 or the photovoltaic module sheet according to claim 9 is used as the front sheet.
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