CN110890168A - Front silver paste for high-contact high-adhesion PERC single crystal solar cell and preparation method - Google Patents
Front silver paste for high-contact high-adhesion PERC single crystal solar cell and preparation method Download PDFInfo
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- CN110890168A CN110890168A CN201911064593.7A CN201911064593A CN110890168A CN 110890168 A CN110890168 A CN 110890168A CN 201911064593 A CN201911064593 A CN 201911064593A CN 110890168 A CN110890168 A CN 110890168A
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 73
- 239000004332 silver Substances 0.000 title claims abstract description 73
- 101001073212 Arabidopsis thaliana Peroxidase 33 Proteins 0.000 title claims abstract description 55
- 101001123325 Homo sapiens Peroxisome proliferator-activated receptor gamma coactivator 1-beta Proteins 0.000 title claims abstract description 55
- 102100028961 Peroxisome proliferator-activated receptor gamma coactivator 1-beta Human genes 0.000 title claims abstract description 55
- 239000013078 crystal Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 38
- 239000002994 raw material Substances 0.000 claims abstract description 29
- 239000011521 glass Substances 0.000 claims abstract description 28
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 19
- 238000005245 sintering Methods 0.000 claims abstract description 15
- 238000007639 printing Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims description 26
- 238000001035 drying Methods 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000005303 weighing Methods 0.000 claims description 15
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 14
- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 13
- VXQBJTKSVGFQOL-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethyl acetate Chemical compound CCCCOCCOCCOC(C)=O VXQBJTKSVGFQOL-UHFFFAOYSA-N 0.000 claims description 11
- 239000004952 Polyamide Substances 0.000 claims description 11
- 229920002647 polyamide Polymers 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 8
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 7
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 7
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 7
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 7
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 7
- 239000004925 Acrylic resin Substances 0.000 claims description 7
- 229920000178 Acrylic resin Polymers 0.000 claims description 7
- 239000001856 Ethyl cellulose Substances 0.000 claims description 7
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims description 7
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000005642 Oleic acid Substances 0.000 claims description 7
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- FBSAITBEAPNWJG-UHFFFAOYSA-N dimethyl phthalate Natural products CC(=O)OC1=CC=CC=C1OC(C)=O FBSAITBEAPNWJG-UHFFFAOYSA-N 0.000 claims description 7
- 229960001826 dimethylphthalate Drugs 0.000 claims description 7
- 229920001249 ethyl cellulose Polymers 0.000 claims description 7
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 7
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 7
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 7
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- -1 alcohol ester Chemical class 0.000 claims description 5
- 238000000498 ball milling Methods 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000012768 molten material Substances 0.000 claims description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 5
- 229920002545 silicone oil Polymers 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- IFPMZBBHBZQTOV-UHFFFAOYSA-N 1,3,5-trinitro-2-(2,4,6-trinitrophenyl)-4-[2,4,6-trinitro-3-(2,4,6-trinitrophenyl)phenyl]benzene Chemical compound [O-][N+](=O)C1=CC([N+](=O)[O-])=CC([N+]([O-])=O)=C1C1=C([N+]([O-])=O)C=C([N+]([O-])=O)C(C=2C(=C(C=3C(=CC(=CC=3[N+]([O-])=O)[N+]([O-])=O)[N+]([O-])=O)C(=CC=2[N+]([O-])=O)[N+]([O-])=O)[N+]([O-])=O)=C1[N+]([O-])=O IFPMZBBHBZQTOV-UHFFFAOYSA-N 0.000 claims description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052787 antimony Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 229910052741 iridium Inorganic materials 0.000 claims description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 239000012046 mixed solvent Substances 0.000 claims description 2
- 229910052763 palladium Inorganic materials 0.000 claims description 2
- 229910052697 platinum Inorganic materials 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 229910052707 ruthenium Inorganic materials 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 9
- 239000002002 slurry Substances 0.000 description 5
- 230000005684 electric field Effects 0.000 description 4
- 229910021419 crystalline silicon Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010344 co-firing Methods 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical group O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0026—Apparatus for manufacturing conducting or semi-conducting layers, e.g. deposition of metal
-
- 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
-
- 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
Abstract
The invention discloses a front silver paste for a high-contact high-adhesion PERC single crystal solar cell and a preparation method thereof, wherein the silver paste is prepared from the following raw materials in percentage by mass: 85-92% of silver powder, 1-5% of glass powder, 5-12% of organic carrier and 0.1-2% of inorganic auxiliary agent. The silver paste for the PERC single crystal solar cell with high contact and adhesive force has good series resistance and printability, and solves the problem of high output and high yield of rapid printing in a cell factory; meanwhile, after the paste is printed on the front side of the PERC single crystal solar cell and dried and sintered, the paste has excellent adhesive force and wear resistance, the problem of friction and scratch of the front side silver paste after sintering is solved, the bad generation caused by mutual friction of the cell pieces in the transportation process is overcome, and the service life of the cell pieces at the assembly end is well guaranteed.
Description
Technical Field
The invention belongs to the technical field of silver paste for solar cells, and particularly relates to front-side silver paste for a high-contact high-adhesion PERC single crystal solar cell and a preparation method thereof.
Background
Solar energy is renewable energy which is inexhaustible and inexhaustible by human beings, and is clean and does not generate any environmental pollution. However, as the competition of the crystalline silicon solar cell industry is continuously increased, the solar photovoltaic market application tends to be wide in field and diversified, and the cell technology tends to be diversified.
Although there are different routes to high efficiency cell technology, one issue to be considered is for the photovoltaic manufacturers to expand to this stage: the technology upgrade or the technology innovation is continued by using the traditional technology. Among various high-efficiency battery technologies, the PERC battery has obvious performance and cost advantages, is well compatible with the productivity of the existing batteries and components, and simultaneously obtains about 1% efficiency improvement, thereby becoming the first high-efficiency battery technology which obtains large-scale commercial breakthrough.
The high-efficiency battery technology tends to be diversified, the supply pattern of the raw materials at the upstream of the high-efficiency battery technology is directly influenced, and the conductive paste is used as an important material for improving the photoelectric conversion efficiency of the solar battery and the power of a photovoltaic module and plays a vital role in improving the efficiency of the solar battery. In recent years, suppliers of metal conductive pastes represented by dupont abroad have developed conductive pastes matching with their high-efficiency battery technologies in line with the pace of battery manufacturers. And domestic metal conductive paste suppliers are also rushing to move.
Due to the special structure of the PERC battery, the front silver paste slurry for the solar battery, which is developed for solving the relevant problems caused by slurry firing, has great significance for forming the independent intellectual property right of the silver powder and the metal conductive silver paste slurry matched with the solar battery in China, promoting the technical breakthrough innovation of the solar battery industry in China and meeting the huge demand of the future market.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide front-side silver paste for a high-contact high-adhesion PERC single crystal solar cell and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the front silver paste for the high-contact high-adhesion PERC single crystal solar cell is prepared from the following raw materials in percentage by mass: 85-92% of silver powder, 1-5% of glass powder, 5-12% of organic carrier and 0.1-2% of inorganic auxiliary agent. .
The front silver paste for the high-contact high-adhesion PERC single crystal solar cell is prepared from the following raw materials in percentage by mass: 85-91% of silver powder, 2-4% of glass powder, 5-10% of organic carrier and 0.1-1.5% of inorganic auxiliary agent.
The front silver paste for the high-contact high-adhesion PERC single crystal solar cell is characterized in that the silver powder is composed of solid spherical silver powder and nano silver powder and is composed of one or more of silver powders with the particle sizes of 0.5-1 mu m, 1-2 mu m, 2-3 mu m, 500-700nm and 700-900 nm.
The front silver paste for the high-contact high-adhesion PERC single crystal solar cell is characterized in that the organic carrier is prepared from the following raw materials in percentage by mass: 5-10% of Dow STD-4 ethyl cellulose, 0.1-5% of acrylic resin, 5-10% of dimethyl phthalate, 1-5% of propylene glycol methyl ether acetate, 3-8% of propylene glycol methyl ether, 10-20% of butyl carbitol, 10-25% of butyl carbitol acetate, 5-10% of alcohol ester, 0.1-5% of oleic acid, 1-6% of TDO, 3-10% of polyamide wax, 0.1-5% of silicone oil and 0.5-5% of esterified modified rosin. .
The front silver paste for the high-contact high-adhesion PERC single crystal solar cell is characterized in that the organic carrier is prepared by the following method: adding ethyl cellulose, acrylic resin, esterified modified rosin and TDO into a mixed solvent of dimethyl phthalate, propylene glycol methyl ether acetate, propylene glycol methyl ether, butyl carbitol, alcohol ester dodeca and oleic acid, heating to 65-75 ℃ by adopting a water bath, heating and stirring to completely dissolve the organic resin, vacuumizing by using a 500-mesh filter screen for filtering, cooling a filtered carrier to room temperature, and fully mixing the cooled carrier with a mixture of butyl carbitol acetate and polyamide wax for use.
The front silver paste for the high-contact high-adhesion PERC single crystal solar cell is characterized in that the inorganic auxiliary agent is one or more of metals or metal oxides in Zr, Sn, Sb, Mo, Te, Pt, Li, Te, Ce, Pt, Ti, Cr, Pd, Ir, Zn, Co, Cs, Ru, nano zinc powder, nano palladium powder, nano boron powder and nano silver powder.
The preparation method of the front silver paste for the high-contact high-adhesion PERC single crystal solar cell comprises the following steps:
1) preparing glass powder: weighing and uniformly mixing all raw materials of the glass powder according to a formula, adjusting the melting temperature to 1000-1200 ℃, melting for 1-4 hours, performing water quenching on the molten material by using deionized water, and performing ball milling, drying and sieving treatment to obtain the glass powder with the particle size of 1-4 mu m;
2) preparing an organic carrier: weighing all the raw materials of the organic carrier according to the formula, uniformly mixing, heating to 65-75 ℃ by adopting a water bath, stirring while heating until all the raw materials are fully and uniformly mixed and completely dissolved, vacuumizing by using a 500-mesh filter screen for filtering, cooling the filtered carrier, cooling to room temperature, fully mixing with a mixture of butyl carbitol acetate and polyamide wax, and then standing by;
3) selecting silver powder, weighing according to a formula, pre-dispersing the glass powder, the organic carrier and the inorganic auxiliary agent, adding the silver powder, mechanically pre-mixing and dispersing, and uniformly mixing in a dispersing mixer to obtain paste for later use;
4) and dispersing and grinding the paste on a three-roller machine to obtain the front silver paste for the high-contact high-adhesion PERC single crystal solar cell.
The use method of the front silver paste for the high-contact high-adhesion PERC single crystal solar cell comprises the following steps:
1) selecting a blue membrane of a PERC single crystal solar cell in a cell factory;
2) printing back silver paste and back aluminum paste on the blue film in the step 1) and drying;
3) adding the silver paste for the high-contact high-adhesion PERC single crystal solar cell on a printer, and printing the silver paste on the blue film surface of the silicon wafer obtained in the step 2);
4) and drying and sintering the blue film sheet printed with the front silver paste, wherein the drying temperature is 220-350 ℃, the sintering temperature is 750-830 ℃, and the drying and sintering are carried out to form the front electrode of the high-contact high-adhesion PERC single crystal solar cell.
The sintering is preferably carried out in a co-firing mode, namely after the printing and drying of the back electrode silver paste, the back electric field aluminum paste and the front silver are finished, the back electrode silver paste, the back electric field aluminum paste and the front silver are all sintered in a chain type sintering furnace to form the final PERC battery piece.
And (4) carrying out electrical property test and adhesion test on the sintered cell.
Compared with the prior art, the invention has the following beneficial effects:
(1) the front silver paste for the PERC single crystal solar cell with high contact and adhesive force has good printability, and solves the problem of printing with high printing performance and high printing speed required by low cost of a cell factory;
(2) the front-side silver paste for the high-contact high-adhesion PERC single-crystal solar cell is printed on the front-side passivation film of the PERC single-crystal solar cell, after drying and sintering, the paste has excellent contact with the front-side passivation film layer, the problem of high series resistance of the cell is solved, the paste has good wear resistance, and the problem of degradation of the cell caused by friction powder falling during sorting or transportation after the cell is sintered is solved;
(3) the front silver paste for the high-contact high-adhesion PERC single-crystal solar cell is applied to the PERC crystalline silicon solar cell, the problem that the adhesion performance of the sintered front silver paste of the PERC single-crystal solar cell is not high is solved, and the adhesion of the sintered cell is more than or equal to 2.0N.
Detailed Description
The invention is further described with reference to the following specific examples, but the scope of the invention is not limited thereto:
example 1
The front silver paste for the high-contact high-adhesion PERC single crystal solar cell is prepared from the following raw materials in percentage by mass: 30% of silver powder with the particle size of 700nm, 59.5% of silver powder with the particle size of 1-2 mu m, 2.8% of glass powder, 6.5% of organic carrier and 1.2% of inorganic auxiliary agent.
The inorganic auxiliary agent is cerium dioxide and nano silver powder.
The organic carrier is prepared from the following raw materials in percentage by mass: 7% of Dow STD-4 ethyl cellulose, 3% of acrylic resin, 10% of dimethyl phthalate, 3% of propylene glycol methyl ether acetate, 5% of propylene glycol methyl ether, 15% of butyl carbitol, 20% of butyl carbitol acetate, 10% of alcohol ester, 2% of oleic acid, 6% of TDO, 10% of polyamide wax, 5% of silicone oil and 4% of esterified modified rosin.
The preparation method of the silver paste for the high-contact high-adhesion PERC crystalline silicon solar cell comprises the following steps:
(1) preparing glass powder: weighing and uniformly mixing the raw materials of the glass powder according to a formula, adjusting the melting temperature to 1050 ℃ for melting for 2 hours, performing water quenching on the molten material by using deionized water, and performing ball milling, drying and sieving treatment to obtain the glass powder with the particle size of 1-4 mu m;
(2) preparing an organic carrier: weighing all the raw materials of the organic carrier according to the formula, uniformly mixing, heating to 70 ℃ by adopting water bath, stirring and heating until all the raw materials are fully mixed and completely dissolved, vacuumizing by using a 500-mesh filter screen for filtering, cooling the filtered carrier to room temperature, and fully mixing with a mixture of butyl carbitol acetate and polyamide wax for later use;
(3) selecting silver powder, weighing according to the formula, pre-dispersing the glass powder, the organic carrier, the organic auxiliary agent and the inorganic auxiliary agent, adding the silver powder, mechanically pre-mixing and dispersing, and uniformly mixing in a planetary dispersing mixer or other dispersing mixers to obtain paste for later use;
(4) and (3) dispersing and grinding the paste on a three-roller machine to obtain the front silver paste for the high-contact high-adhesion PERC single crystal solar cell, wherein the fineness of the front silver paste is less than 3 mu m, and the viscosity of the front silver paste is 92 Pa.S.
The use method of the front silver paste for the high-contact high-adhesion PERC single crystal solar cell comprises the following steps:
1) selecting a blue membrane of a PERC single crystal solar cell in a cell factory;
2) printing back silver paste and back aluminum paste on the blue film in the step 1) and drying;
3) adding the silver paste for the high-contact high-adhesion PERC single crystal solar cell on a printer, and printing the silver paste on the blue film surface of the silicon wafer obtained in the step 2);
4) and drying and sintering the blue film sheet printed with the front silver paste, wherein the drying temperature is 220-350 ℃, the sintering temperature is 750-830 ℃, and the drying and sintering are carried out to form the front electrode of the high-contact high-adhesion PERC single crystal solar cell.
The sintering is preferably carried out in a co-firing mode, namely after the silver paste of the back electrode, the aluminum paste of the back electric field and the front silver are all printed, the silver paste of the back electrode, the aluminum paste of the back electric field and the front silver are all put into a sintering furnace to be sintered together, so that the final PERC battery piece is formed.
And (4) carrying out electrical property test and adhesion test on the sintered cell.
And the adhesion test is carried out by welding the sintered battery piece and then pulling the battery piece in a 180-degree reverse mode, and an adhesion tester is used for directly reading adhesion data.
Example 2
The front silver paste for the high-contact high-adhesion PERC single crystal solar cell is prepared from the following raw materials in percentage by mass: 20 percent of silver powder with the particle size of 700nm, 69.8 percent of silver powder with the particle size of 1-2 mu m, 2.5 percent of glass powder, 6.6 percent of organic carrier and 1.1 percent of inorganic auxiliary agent.
The inorganic auxiliary agent is nano zinc powder and nano silver powder.
The organic carrier is prepared from the following raw materials in percentage by mass: 7% of Dow STD-4 ethyl cellulose, 3% of acrylic resin, 10% of dimethyl phthalate, 4% of propylene glycol methyl ether acetate, 5% of propylene glycol methyl ether, 15% of butyl carbitol, 20% of butyl carbitol acetate, 10% of alcohol ester, 2% of oleic acid, 5% of TDO, 10% of polyamide wax, 4% of silicone oil and 5% of esterified modified rosin.
The preparation method of the front silver paste for the high-contact high-adhesion PERC single crystal solar cell comprises the following steps:
(1) preparing glass powder: weighing and uniformly mixing the raw materials of the glass powder according to the formula, adjusting the melting temperature to 1060 ℃ for melting for 2 hours, performing water quenching on the molten material by using deionized water, and performing ball milling, drying and sieving treatment to obtain the glass powder with the particle size of 1-4 mu m;
(2) preparing an organic carrier: weighing all the raw materials of the organic carrier according to the formula, uniformly mixing, heating to 65 ℃ by adopting water bath, stirring and heating until all the raw materials are fully mixed and completely dissolved, vacuumizing by using a 500-mesh filter screen for filtering, cooling the filtered carrier to room temperature, and fully mixing with a mixture of butyl carbitol acetate and polyamide wax for later use;
(3) selecting silver powder, weighing according to the formula, pre-dispersing the glass powder, the organic carrier and the inorganic auxiliary agent, adding the silver powder, mechanically pre-mixing and dispersing, and uniformly mixing in a planetary dispersing mixer or other dispersing mixers to obtain paste for later use;
(4) and (3) dispersing and grinding the paste on a three-roller machine to obtain the front silver paste for the high-contact high-adhesion PERC single crystal solar cell, wherein the fineness of the front silver paste is less than 3 mu m, and the viscosity of the front silver paste is 93 Pa.S.
The silver paste was used in the same manner as in example 1.
Example 3
The front silver paste for the high-contact high-adhesion PERC single crystal solar cell is prepared from the following raw materials in percentage by mass: silver powder with the particle size of 700nm is 25 percent, silver powder with the particle size of 1-2 mu m is 64.8 percent, glass powder is 2.6 percent, organic carrier is 6.6 percent, and inorganic auxiliary agent is 1.0 percent.
The inorganic auxiliary agent is nano palladium powder and nano silver powder.
The organic carrier is prepared from the following raw materials in percentage by mass: 8% of Dow STD-4 ethyl cellulose, 2% of acrylic resin, 8% of dimethyl phthalate, 4% of propylene glycol methyl ether acetate, 6% of propylene glycol methyl ether, 12% of butyl carbitol, 22% of butyl carbitol acetate, 10% of alcohol ester, 2% of oleic acid, 5% of TDO, 12% of polyamide wax, 5% of silicone oil and 4% of esterified modified rosin.
The preparation method of the front silver paste for the high-contact high-adhesion PERC single crystal solar cell comprises the following steps:
(1) preparing glass powder: weighing and uniformly mixing the raw materials of the glass powder according to the formula, adjusting the melting temperature to 1080 ℃ for melting for 2 hours, performing water quenching on the molten material by using deionized water, and performing ball milling, drying and sieving treatment to obtain the glass powder with the particle size of 1-3 mu m;
(2) preparing an organic carrier: weighing all the raw materials of the organic carrier according to the formula, uniformly mixing, heating to 65 ℃ by adopting water bath, stirring and heating until all the raw materials are fully mixed and completely dissolved, vacuumizing by using a 500-mesh filter screen for filtering, cooling the filtered carrier to room temperature, and fully mixing with a mixture of butyl carbitol acetate and polyamide wax for later use;
(3) selecting silver powder, weighing according to the formula, pre-dispersing the glass powder, the organic carrier and the inorganic auxiliary agent, adding the silver powder, mechanically pre-mixing and dispersing, and uniformly mixing in a planetary dispersing mixer or other dispersing mixers to obtain paste for later use;
(4) and (3) dispersing and grinding the paste on a three-roller machine to obtain the front silver paste for the high-contact high-adhesion PERC single crystal solar cell, wherein the fineness of the front silver paste is less than 3 mu m, and the viscosity of the front silver paste is 93 Pa.S.
The silver paste was used in the same manner as in example 1.
And (3) comparing test results:
table one slurry adhesion test data
| Sample type | Eta/％ | Rs/Ohm | adhesion/N |
| Example 1 | 21.923％ | 0.00232 | 2.2 |
| Example 2 | 21.942％ | 0.00229 | 2.4 |
| Example 3 | 21.945％ | 0.00231 | 2.1 |
| Existing products | 21.916％ | 0.00251 | 1.8 |
Electrical property test data of the two-slurry
The method comprises the following steps of testing electrical performance of a solar cell, wherein Eta is conversion efficiency in the electrical performance test of the solar cell, Uoc is open-circuit voltage, Isc is circuit current, Rs is series resistance, Rsh is parallel resistance, FF is a filling factor, and IRev2 is leakage current.
The comparison result in the table I shows that the series resistance of the cell is effectively reduced by adopting the technology of the invention, and the problem of low adhesion performance of the sintered silver paste of the PERC single crystal solar cell is solved; as is apparent from the comparative data in table two, the Voc of the example is higher than that of the existing product under the condition that the electrical property of the battery piece is advantageous, and the packaging loss of the battery piece in the assembly is reduced.
The above specific examples are provided only for further illustration of the present invention and do not represent limitations to the scope of the present invention. Other insubstantial modifications and adaptations of the present invention can be made without departing from the scope of the present invention.
Claims (8)
1. The front silver paste for the high-contact high-adhesion PERC single crystal solar cell is prepared from the following raw materials in percentage by mass: 85-92% of silver powder, 1-5% of glass powder, 5-12% of organic carrier and 0.1-2% of inorganic auxiliary agent.
2. The front silver paste for the high-contact high-adhesion PERC single crystal solar cell as claimed in claim 1, which is prepared from the following raw materials in percentage by mass: 85-91% of silver powder, 2-4% of glass powder, 5-10% of organic carrier and 0.1-1.5% of inorganic auxiliary agent.
3. The front silver paste for the PERC single crystal solar cell with high contact and high adhesion as claimed in claim 1 or 2, wherein the silver powder is solid spherical silver powder and nano silver powder, and is composed of one or more silver powders with particle diameters of 0.5-1 μm, 1-2 μm, 2-3 μm, 500-700nm and 700-900 nm.
4. The front silver paste for the high-contact high-adhesion PERC single-crystal solar cell as claimed in claim 1 or 2, wherein the organic vehicle is prepared from the following raw materials in percentage by mass: 5-10% of Dow STD-4 ethyl cellulose, 0.1-5% of acrylic resin, 5-10% of dimethyl phthalate, 1-5% of propylene glycol methyl ether acetate, 3-8% of propylene glycol methyl ether, 10-20% of butyl carbitol, 10-25% of butyl carbitol acetate, 5-10% of alcohol ester, 0.1-5% of oleic acid, 1-6% of TDO, 3-10% of polyamide wax, 0.1-5% of silicone oil and 0.5-5% of esterified modified rosin.
5. The front silver paste for the high-contact high-adhesion PERC single-crystal solar cell according to claim 4, wherein the organic vehicle is prepared by the following method: adding ethyl cellulose, acrylic resin, esterified modified rosin and TDO into a mixed solvent of dimethyl phthalate, propylene glycol methyl ether acetate, propylene glycol methyl ether, butyl carbitol, alcohol ester dodeca and oleic acid, heating to 65-75 ℃ by adopting a water bath, heating and stirring to completely dissolve the organic resin, vacuumizing by using a 500-mesh filter screen for filtering, cooling a filtered carrier to room temperature, and fully mixing the cooled carrier with a mixture of butyl carbitol acetate and polyamide wax for use.
6. The front silver paste for the PERC single crystal solar cell with high contact and adhesion as claimed in claim 1 or 2, wherein the inorganic auxiliary agent is one or more of metals or metal oxides of Zr, Sn, Sb, Mo, Te, Pt, Li, Te, Ce, Pt, Ti, Cr, Pd, Ir, Zn, Co, Cs, Ru, nano zinc powder, nano palladium powder, nano boron powder and nano silver powder.
7. The method for preparing the front silver paste for the high-contact high-adhesion PERC single-crystal solar cell according to claim 1 or 2, comprising the following steps:
1) preparing glass powder: weighing and uniformly mixing all raw materials of the glass powder according to a formula, adjusting the melting temperature to 1000-1200 ℃, melting for 1-4 hours, performing water quenching on the molten material by using deionized water, and performing ball milling, drying and sieving treatment to obtain the glass powder with the particle size of 1-4 mu m;
2) preparing an organic carrier: weighing each raw material of the organic carrier according to the formula, uniformly mixing, heating to 65-75 ℃ in a water bath, stirring while heating until each raw material is fully and uniformly mixed and completely dissolved, vacuumizing by using a 500-mesh filter screen for filtering, and filtering to obtain the organic carrier;
3) selecting silver powder, weighing according to a formula, pre-dispersing the glass powder, the organic carrier and the inorganic auxiliary agent, adding the silver powder, mechanically pre-mixing and dispersing, and uniformly mixing in a dispersing mixer to obtain paste for later use;
4) and dispersing and grinding the paste on a three-roller machine to obtain the front silver paste for the high-contact high-adhesion PERC single crystal solar cell.
8. The use method of the front side silver paste for the high contact and high adhesion PERC single crystal solar cell according to claim 1 or 2, comprising the following steps:
1) selecting a blue membrane of a PERC single crystal solar cell in a cell factory;
2) printing back silver paste and back aluminum paste on the blue film in the step 1) and drying;
3) adding the silver paste for the high-contact high-adhesion PERC single crystal solar cell on a printer, and printing the silver paste on the blue film surface of the silicon wafer obtained in the step 2);
4) and drying and sintering the blue film sheet printed with the front silver paste, wherein the drying temperature is 220-350 ℃, the sintering temperature is 750-830 ℃, and the drying and sintering are carried out to form the front electrode of the high-contact high-adhesion PERC single crystal solar cell.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021232491A1 (en) * | 2020-05-20 | 2021-11-25 | 浙江晶科能源有限公司 | Slurry and humid-heat-attenuation-resistant photovoltaic cell |
| CN113903496A (en) * | 2021-10-29 | 2022-01-07 | 江苏正能电子科技有限公司 | Busbar repair type silver paste suitable for PERC and preparation method thereof |
| CN114550971A (en) * | 2022-02-22 | 2022-05-27 | 上海银浆科技有限公司 | Silicon solar cell front conductive silver paste and preparation method thereof, silicon solar cell and front electrode for silicon solar cell |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295663A (en) * | 2012-01-23 | 2013-09-11 | 赫劳斯贵金属北美康舍霍肯有限责任公司 | Electroconductive thick film paste for solar cell contacts |
| CN105741902A (en) * | 2014-12-31 | 2016-07-06 | 贺利氏贵金属北美康舍霍肯有限责任公司 | Glass compositions for electroconductive paste compositions |
| CN107240436A (en) * | 2017-06-30 | 2017-10-10 | 北京市合众创能光电技术有限公司 | A kind of PERC crystal silicon solar energy batteries positive silver paste and preparation method thereof |
| CN108074656A (en) * | 2017-12-29 | 2018-05-25 | 北京市合众创能光电技术有限公司 | A kind of silk-screen printing PERC crystal silicon solars main grid positive silver paste and preparation method thereof |
| CN109659066A (en) * | 2019-01-10 | 2019-04-19 | 四川东树新材料有限公司 | A kind of front side silver paste being used to prepare PERC silicon solar cell |
| CN109659064A (en) * | 2018-12-07 | 2019-04-19 | 浙江中希电子科技有限公司 | A kind of front side silver paste material and its preparation process of the crystal silicon Perc battery with high-tensile strength |
-
2019
- 2019-11-04 CN CN201911064593.7A patent/CN110890168A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295663A (en) * | 2012-01-23 | 2013-09-11 | 赫劳斯贵金属北美康舍霍肯有限责任公司 | Electroconductive thick film paste for solar cell contacts |
| CN105741902A (en) * | 2014-12-31 | 2016-07-06 | 贺利氏贵金属北美康舍霍肯有限责任公司 | Glass compositions for electroconductive paste compositions |
| CN107240436A (en) * | 2017-06-30 | 2017-10-10 | 北京市合众创能光电技术有限公司 | A kind of PERC crystal silicon solar energy batteries positive silver paste and preparation method thereof |
| CN108074656A (en) * | 2017-12-29 | 2018-05-25 | 北京市合众创能光电技术有限公司 | A kind of silk-screen printing PERC crystal silicon solars main grid positive silver paste and preparation method thereof |
| CN109659064A (en) * | 2018-12-07 | 2019-04-19 | 浙江中希电子科技有限公司 | A kind of front side silver paste material and its preparation process of the crystal silicon Perc battery with high-tensile strength |
| CN109659066A (en) * | 2019-01-10 | 2019-04-19 | 四川东树新材料有限公司 | A kind of front side silver paste being used to prepare PERC silicon solar cell |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021232491A1 (en) * | 2020-05-20 | 2021-11-25 | 浙江晶科能源有限公司 | Slurry and humid-heat-attenuation-resistant photovoltaic cell |
| CN113903496A (en) * | 2021-10-29 | 2022-01-07 | 江苏正能电子科技有限公司 | Busbar repair type silver paste suitable for PERC and preparation method thereof |
| CN114550971A (en) * | 2022-02-22 | 2022-05-27 | 上海银浆科技有限公司 | Silicon solar cell front conductive silver paste and preparation method thereof, silicon solar cell and front electrode for silicon solar cell |
| CN114550971B (en) * | 2022-02-22 | 2022-11-15 | 上海银浆科技有限公司 | Front conductive silver paste of silicon solar cell, preparation method of front conductive silver paste, silicon solar cell and front electrode for silicon solar cell |
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