CN115188839A - Manufacturing method of solar cell electrode - Google Patents
Manufacturing method of solar cell electrode Download PDFInfo
- Publication number
- CN115188839A CN115188839A CN202210906975.5A CN202210906975A CN115188839A CN 115188839 A CN115188839 A CN 115188839A CN 202210906975 A CN202210906975 A CN 202210906975A CN 115188839 A CN115188839 A CN 115188839A
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- Prior art keywords
- metal wire
- adhesive film
- film layer
- solar cell
- manufacturing
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 60
- 239000002184 metal Substances 0.000 claims abstract description 60
- 239000002313 adhesive film Substances 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 16
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000007639 printing Methods 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052709 silver Inorganic materials 0.000 claims description 10
- 239000004332 silver Substances 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- 229910021419 crystalline silicon Inorganic materials 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 238000007650 screen-printing Methods 0.000 claims description 5
- 239000010409 thin film Substances 0.000 claims description 5
- 239000002041 carbon nanotube Substances 0.000 claims description 4
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000001312 dry etching Methods 0.000 claims description 4
- 239000010408 film Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 229910021389 graphene Inorganic materials 0.000 claims description 4
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims description 4
- 238000001039 wet etching Methods 0.000 claims description 4
- -1 silver-aluminum Chemical compound 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims 7
- 239000012790 adhesive layer Substances 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 229910001128 Sn alloy Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- QKAJPFXKNNXMIZ-UHFFFAOYSA-N [Bi].[Ag].[Sn] Chemical compound [Bi].[Ag].[Sn] QKAJPFXKNNXMIZ-UHFFFAOYSA-N 0.000 description 1
- ZWFRZGJUJSOHGL-UHFFFAOYSA-N [Bi].[Cu].[Sn] Chemical compound [Bi].[Cu].[Sn] ZWFRZGJUJSOHGL-UHFFFAOYSA-N 0.000 description 1
- PPIIGEJBVZHNIN-UHFFFAOYSA-N [Cu].[Sn].[Pb] Chemical compound [Cu].[Sn].[Pb] PPIIGEJBVZHNIN-UHFFFAOYSA-N 0.000 description 1
- OLXNZDBHNLWCNK-UHFFFAOYSA-N [Pb].[Sn].[Ag] Chemical compound [Pb].[Sn].[Ag] OLXNZDBHNLWCNK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- JWVAUCBYEDDGAD-UHFFFAOYSA-N bismuth tin Chemical compound [Sn].[Bi] JWVAUCBYEDDGAD-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes 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
- H01L31/0445—PV modules or arrays of single PV cells including thin film solar cells, e.g. single thin film a-Si, CIS or CdTe solar cells
- H01L31/046—PV modules composed of a plurality of thin film solar cells deposited on the same substrate
-
- 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
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/80—Constructional details
- H10K30/81—Electrodes
Abstract
The invention discloses a method for manufacturing a solar cell electrode, which comprises the following steps: s1, arranging an adhesive film layer on a substrate, and manufacturing holes on the adhesive film layer according to a design pattern to form a template; s2, printing a metal wire on the adhesive film layer as a grid line according to the design pattern to form a metal wire adhesive film plate; s3, attaching the surface of the metal wire printed on the metal wire adhesive film plate to the battery piece and removing the substrate; and S4, filling the conductive slurry in the hole and solidifying. The invention utilizes the metal wire to replace expensive conductive silver paste, fixes the metal wire through the adhesive film layer to ensure the stability, can greatly reduce the manufacturing cost and the shading area of the grid line on the basis of ensuring the same conductivity, and improves the conversion efficiency of the battery. Meanwhile, the process of the metal wire can use the more complex manufacture of the metal wire pattern, the template and the metal wire printing can be manufactured in advance, the metal wire before the metal slurry is fixed has better stability, the alignment is more accurate, and the yield is higher.
Description
Technical Field
The invention relates to the technical field of solar cells, in particular to a manufacturing method of a solar cell electrode.
Background
A solar cell is a photoelectric semiconductor sheet directly generating electricity by using sunlight, which is also called a solar chip or a photovoltaic cell, and can output voltage instantly and generate current under the condition of a loop as long as the solar cell is illuminated under a certain illumination condition. Physically called solar Photovoltaic (abbreviated as PV), referred to as Photovoltaic for short.
Solar cells are devices that directly convert light energy into electrical energy by the photoelectric or photochemical effect. Crystalline silicon solar cells working with photovoltaic effect are the mainstream, while thin film solar cells working with photochemical effect are still in the germination stage.
The development of the photovoltaic industry is rapid under the energy crisis and the carbon peak carbon neutralization background, and the key for further popularization of photovoltaic application is to improve the photoelectric conversion efficiency of the solar cell and reduce the manufacturing cost of the cell. For solar cells, the structure of the cell must be designed in detail in order to obtain the highest possible photoelectric conversion efficiency. The grid lines are an indispensable part of the battery, and the metal grid lines are responsible for guiding photo-generated current in the battery to the outside of the battery. At present, most grid line electrodes are mainly used for screen printing of conductive silver paste, and the defects that the silver paste is high in price, large in consumption, difficult to reduce cost, difficult to further improve the height-width ratio of a printing process, large in shading area, and capable of influencing the absorption of a cell piece to light and further influencing the photoelectric conversion efficiency are overcome. Therefore, a new method for fabricating an electrode of a solar cell is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a manufacturing method of a solar cell electrode, which has the advantages of reasonable structure, low cost, mature process and improved conversion efficiency.
In order to solve the above problems, the present invention provides a method for manufacturing a solar cell electrode, including the steps of:
s1, arranging an adhesive film layer on a substrate, and manufacturing holes on the adhesive film layer according to a design pattern to form a template;
s2, printing metal wires on the adhesive film layer as grid lines according to the design pattern to form a metal wire adhesive film plate;
s3, attaching the surface of the metal wire printed on the metal wire adhesive film plate to a battery piece and removing the substrate;
and S4, filling the conductive slurry in the hole and solidifying.
As a further improvement of the present invention, in step S1, the adhesive film layer is EVA or POE, and the adhesive film layer may be laminated with an EVA/POE layer on the battery piece.
As a further improvement of the present invention, in step S1, a hole is made on the glue film layer by dry etching or wet etching.
As a further improvement of the invention, the method also comprises the following steps:
and S5, removing the adhesive film layer.
As a further improvement of the present invention, step S5 includes: and removing the adhesive film layer by mechanical stripping or chemical stripping.
As a further development of the invention, the substrate is PET, glass or metal.
As a further improvement of the invention, the metal wire is a copper wire, an aluminum wire, a tin-coated copper wire, a silver-coated copper wire or a tin alloy-coated copper wire.
As a further improvement of the invention, the cell is a crystalline silicon solar cell, a thin film solar cell or an organic solar cell.
As a further improvement of the present invention, in step S4, the filling of the conductive paste in the hole is performed by screen printing, dispensing or scraping.
As a further improvement of the present invention, the conductive paste is silver paste, aluminum paste, tin paste, silver-aluminum paste, silver-coated copper, graphene paste or carbon nanotube paste.
The invention has the beneficial effects that:
according to the manufacturing method of the solar cell electrode, the metal wire is used for replacing expensive conductive silver paste, the metal wire is fixed through the adhesive film layer so as to ensure stability, on the basis of ensuring the same conductivity, the manufacturing cost and the shading area of the grid line can be greatly reduced, and the conversion efficiency of the cell is improved.
Meanwhile, the process of the metal wire can use the more complex manufacture of the metal wire pattern, the template and the metal wire printing can be manufactured in advance, the metal wire before the metal slurry is fixed has better stability, the alignment is more accurate, and the yield is higher.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a flow chart of a method of fabricating an electrode for a solar cell in a preferred embodiment of the invention;
fig. 2 is a schematic diagram of a method for manufacturing an electrode of a solar cell according to a preferred embodiment of the present invention.
Detailed Description
The present invention is further described below in conjunction with the drawings and the embodiments so that those skilled in the art can better understand the present invention and can carry out the present invention, but the embodiments are not to be construed as limiting the present invention.
Example one
As shown in fig. 1, the embodiment discloses a method for manufacturing a solar cell electrode, which includes the following steps:
s1, arranging an adhesive film layer on a substrate, and manufacturing holes in the adhesive film layer according to a design pattern to form a template; optionally, a hole is formed in the glue film layer by a method such as dry etching or wet etching. Optionally, the substrate is PET, glass, metal, or the like.
Furthermore, an adhesive film layer is arranged on the whole surface of the substrate to ensure the stability of adhesion between the printed metal wires.
S2, printing a metal wire on the adhesive film layer as a grid line according to a design pattern to form a metal wire adhesive film plate; the metal wire is lower in resistivity, the grid line can be thinner, the illumination area is increased, and the conversion efficiency is improved. Optionally, the metal wire is a copper wire, an aluminum wire, a tin-coated copper wire, a silver-coated copper wire, a tin alloy-coated copper wire, or the like, wherein the tin alloy can be selected from tin lead, tin lead silver, tin lead copper, tin bismuth silver, tin bismuth copper, or the like.
S3, attaching the surface of the metal wire printed on the metal wire adhesive film plate to a battery piece and removing the substrate; optionally, the cell is a crystalline silicon solar cell, a thin film solar cell, an organic solar cell, or the like. Wherein, when the adhesive is adhered, the control of contraposition, pressure, high temperature, vacuum and the like can be added according to the requirement. Optionally, the printing of metal wire is carried out through metal wire 3D printing apparatus, can set for according to the requirement of difference, and speed, pressure, printer head also can increase and decrease according to the demand is tight.
And S4, filling the conductive slurry in the hole and solidifying.
Optionally, the manner of filling the conductive paste in the hole is screen printing, dispensing or scraping. The conductive paste is silver paste, aluminum paste, tin paste, silver-aluminum paste, silver-coated copper, graphene paste or carbon nanotube paste.
Optionally, in step S1, the adhesive film layer is EVA or POE, and the adhesive film layer may be laminated with an EVA/POE layer on the battery sheet. Since the conventional solar cell is formed by laminating the cell piece + EVA/POE + photovoltaic glass in the laminator at a high temperature, the adhesive film layer is selected to be EVA or POE in this embodiment, which is equal to that EVA/POE in the middle of the solar cell is used in the metal wire in advance, and then the module lamination can be performed by adding a little thinner EVA/POE. Not only does not have extra auxiliary material to increase, but also improves the embedding degree of the battery piece and the metal wire and effectively improves the battery performance.
According to the manufacturing method of the solar cell electrode, the metal wire is used for replacing expensive conductive silver paste, the metal wire is fixed through the adhesive film layer so as to ensure stability, manufacturing cost and shading area of the grid line can be greatly reduced on the basis of ensuring the same conductivity, and cell conversion efficiency is improved.
Meanwhile, the process of the metal wire in the embodiment can use the manufacture of a more complex metal wire pattern, the template and the metal wire printing can be manufactured in advance, the metal wire before the metal slurry is fixed is better in stability, the alignment is more accurate, and the yield is also higher.
Example two
As shown in fig. 2, the present embodiment discloses a method for manufacturing a solar cell electrode, including the following steps:
s1, arranging an adhesive film layer on a substrate, and manufacturing holes on the adhesive film layer according to a design pattern to form a template; optionally, a hole is formed in the glue film layer by dry etching, wet etching or other methods. Optionally, the substrate is PET, glass, metal, or the like.
Furthermore, an adhesive film layer is arranged on the whole surface of the substrate to ensure the stability of adhesion between the printed metal wires.
S2, printing a metal wire on the adhesive film layer as a grid line according to a design pattern to form a metal wire adhesive film plate; the metal wire is lower in resistivity, the grid line can be thinner, the illumination area is increased, and the conversion efficiency is improved. Optionally, the metal wire is a copper wire, a tin-clad copper wire, a silver-clad copper wire, a tin-bismuth alloy-clad copper wire, or the like. Optionally, carry out the printing of metal wire through metal wire 3D printing apparatus, can set for according to the requirement of difference, speed, pressure, beat printer head and also can tightly increase and decrease according to the demand.
S3, attaching the surface of the metal wire printed on the metal wire adhesive film plate to a battery piece and removing the substrate; optionally, the cell is a crystalline silicon solar cell, a thin film solar cell, an organic solar cell, or the like. Wherein, when the adhesive is attached, the control of contraposition, pressure, high temperature, vacuum and the like can be added according to the requirement.
And S4, filling the conductive slurry in the hole and solidifying.
Optionally, the manner of filling the conductive paste in the hole is screen printing, dispensing or scraping. The conductive paste is silver paste, aluminum paste, silver-coated copper, graphene paste or carbon nanotube paste.
And S5, removing the adhesive film layer. In one embodiment, the adhesive film layer is retained without affecting the overall performance. In this embodiment, the adhesive film layer affects the overall performance, and therefore, needs to be removed. Optionally, the adhesive film layer is removed by mechanical stripping or chemical stripping.
The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. A manufacturing method of a solar cell electrode is characterized by comprising the following steps:
s1, arranging an adhesive film layer on a substrate, and manufacturing holes on the adhesive film layer according to a design pattern to form a template;
s2, printing a metal wire on the adhesive film layer as a grid line according to a design pattern to form a metal wire adhesive film plate;
s3, attaching the surface of the metal wire printed on the metal wire adhesive film plate to a battery piece and removing the substrate;
and S4, filling the conductive slurry in the hole and solidifying.
2. The method of claim 1, wherein in step S1, the adhesive layer is EVA or POE, and the adhesive layer can be module laminated with the EVA/POE layer on the cell sheet.
3. The method for manufacturing the solar cell electrode according to claim 1, wherein in step S1, the hole is formed in the glue film layer by dry etching or wet etching.
4. The method of claim 1, further comprising the steps of:
and S5, removing the adhesive film layer.
5. The method for manufacturing the solar cell electrode according to claim 4, wherein the step S5 comprises: and removing the adhesive film layer by mechanical stripping or chemical stripping.
6. The method of claim 1, wherein the substrate is PET, glass, or metal.
7. The method of claim 1, wherein the metal wire is a copper wire, an aluminum wire, a tin-clad copper wire, a silver-clad copper wire, or a tin alloy-clad copper wire.
8. The method for manufacturing the solar cell electrode according to claim 1, wherein the cell is a crystalline silicon solar cell, a thin film solar cell or an organic solar cell.
9. The method according to claim 1, wherein the step S4 of filling the holes with the conductive paste is performed by screen printing, dispensing or scraping.
10. The method according to claim 1, wherein the conductive paste is silver paste, aluminum paste, tin paste, silver-aluminum paste, silver-clad copper, graphene paste, or carbon nanotube paste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210906975.5A CN115188839A (en) | 2022-07-29 | 2022-07-29 | Manufacturing method of solar cell electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210906975.5A CN115188839A (en) | 2022-07-29 | 2022-07-29 | Manufacturing method of solar cell electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115188839A true CN115188839A (en) | 2022-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210906975.5A Pending CN115188839A (en) | 2022-07-29 | 2022-07-29 | Manufacturing method of solar cell electrode |
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| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0684652A2 (en) * | 1994-05-19 | 1995-11-29 | Canon Kabushiki Kaisha | Photovoltaic element, electrode structure thereof, and process for producing the same |
| CN101924167A (en) * | 2010-08-06 | 2010-12-22 | 李卫卫 | Method for producing film laminating block and method for producing positive electrode |
| CN113793883A (en) * | 2021-09-07 | 2021-12-14 | 苏州诺菲纳米科技有限公司 | Preparation method of solar cell electrode |
| CN114156349A (en) * | 2021-11-08 | 2022-03-08 | 苏州诺菲纳米科技有限公司 | Solar cell and manufacturing method thereof |
-
2022
- 2022-07-29 CN CN202210906975.5A patent/CN115188839A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0684652A2 (en) * | 1994-05-19 | 1995-11-29 | Canon Kabushiki Kaisha | Photovoltaic element, electrode structure thereof, and process for producing the same |
| CN1150338A (en) * | 1994-05-19 | 1997-05-21 | 佳能株式会社 | Photovoltaic element, electrode structure thereof, and process for producing the same |
| CN101924167A (en) * | 2010-08-06 | 2010-12-22 | 李卫卫 | Method for producing film laminating block and method for producing positive electrode |
| CN113793883A (en) * | 2021-09-07 | 2021-12-14 | 苏州诺菲纳米科技有限公司 | Preparation method of solar cell electrode |
| CN114156349A (en) * | 2021-11-08 | 2022-03-08 | 苏州诺菲纳米科技有限公司 | Solar cell and manufacturing method thereof |
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