CN109698039A - A kind of solar energy back field aluminum paste and preparation method thereof applied to two-sided PERC battery process - Google Patents
A kind of solar energy back field aluminum paste and preparation method thereof applied to two-sided PERC battery process Download PDFInfo
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- CN109698039A CN109698039A CN201910005332.1A CN201910005332A CN109698039A CN 109698039 A CN109698039 A CN 109698039A CN 201910005332 A CN201910005332 A CN 201910005332A CN 109698039 A CN109698039 A CN 109698039A
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- solar energy
- energy back
- aluminum paste
- back field
- field aluminum
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 61
- 101001073212 Arabidopsis thaliana Peroxidase 33 Proteins 0.000 title claims abstract description 17
- 101001123325 Homo sapiens Peroxisome proliferator-activated receptor gamma coactivator 1-beta Proteins 0.000 title claims abstract description 17
- 102100028961 Peroxisome proliferator-activated receptor gamma coactivator 1-beta Human genes 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims description 20
- 239000004411 aluminium Substances 0.000 claims abstract description 31
- 239000000843 powder Substances 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 10
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 229910000632 Alusil Inorganic materials 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 239000002270 dispersing agent Substances 0.000 claims abstract description 8
- 238000009736 wetting Methods 0.000 claims abstract description 8
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims description 25
- 230000008018 melting Effects 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 10
- 238000010791 quenching Methods 0.000 claims description 10
- 230000000171 quenching effect Effects 0.000 claims description 10
- 238000000498 ball milling Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 7
- 239000001856 Ethyl cellulose Substances 0.000 claims description 6
- 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 6
- 239000011230 binding agent Substances 0.000 claims description 6
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 6
- 229920001249 ethyl cellulose Polymers 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 5
- CRWNQZTZTZWPOF-UHFFFAOYSA-N 2-methyl-4-phenylpyridine Chemical compound C1=NC(C)=CC(C=2C=CC=CC=2)=C1 CRWNQZTZTZWPOF-UHFFFAOYSA-N 0.000 claims description 5
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 229910052681 coesite Inorganic materials 0.000 claims description 5
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- 229910052906 cristobalite Inorganic materials 0.000 claims description 5
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 claims description 5
- 239000005011 phenolic resin Substances 0.000 claims description 5
- 229920001568 phenolic resin Polymers 0.000 claims description 5
- 229910052573 porcelain Inorganic materials 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 229910052682 stishovite Inorganic materials 0.000 claims description 5
- 229910052905 tridymite Inorganic materials 0.000 claims description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 5
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 4
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical group CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 4
- 229910021485 fumed silica Inorganic materials 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000000787 lecithin Substances 0.000 claims description 3
- 235000010445 lecithin Nutrition 0.000 claims description 3
- 229940067606 lecithin Drugs 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- JLGLQAWTXXGVEM-UHFFFAOYSA-N triethylene glycol monomethyl ether Chemical compound COCCOCCOCCO JLGLQAWTXXGVEM-UHFFFAOYSA-N 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims 1
- 239000008107 starch Substances 0.000 claims 1
- 235000019698 starch Nutrition 0.000 claims 1
- 239000002002 slurry Substances 0.000 abstract description 15
- 238000007639 printing Methods 0.000 abstract description 6
- 238000000465 moulding Methods 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 18
- 238000006243 chemical reaction Methods 0.000 description 10
- 210000004027 cell Anatomy 0.000 description 8
- 238000005245 sintering Methods 0.000 description 8
- 239000011787 zinc oxide Substances 0.000 description 8
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 description 6
- 238000002161 passivation Methods 0.000 description 6
- 239000011521 glass Substances 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 4
- 235000011613 Pinus brutia Nutrition 0.000 description 4
- 241000018646 Pinus brutia Species 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical compound [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000010422 painting Methods 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229940037003 alum Drugs 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 229910000464 lead oxide Inorganic materials 0.000 description 2
- RVPVRDXYQKGNMQ-UHFFFAOYSA-N lead(2+) Chemical compound [Pb+2] RVPVRDXYQKGNMQ-UHFFFAOYSA-N 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- RBNWAMSGVWEHFP-UHFFFAOYSA-N trans-p-Menthane-1,8-diol Chemical compound CC(C)(O)C1CCC(C)(O)CC1 RBNWAMSGVWEHFP-UHFFFAOYSA-N 0.000 description 2
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- 101100373011 Drosophila melanogaster wapl gene Proteins 0.000 description 1
- UWIULCYKVGIOPW-UHFFFAOYSA-N Glycolone Natural products CCOC1=C(CC=CC)C(=O)N(C)c2c(O)cccc12 UWIULCYKVGIOPW-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 229910004205 SiNX Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 210000004483 pasc Anatomy 0.000 description 1
- -1 phenolic aldehyde Chemical class 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 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
- H01B1/14—Conductive material dispersed in non-conductive inorganic material
- H01B1/16—Conductive material dispersed in non-conductive inorganic 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
- 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
-
- 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
- H01L31/022441—Electrode arrangements specially adapted for back-contact 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
Landscapes
- Engineering & Computer Science (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a kind of solar energy back field aluminum pastes applied to two-sided PERC battery process, the mass percent of raw material contained by the solar energy back field aluminum paste and each raw material are as follows: organic bond 18.5%, inorganic bond 2%, aluminium powder 77%, levelling defoaming agent 1%, anti-settling agent 0.5%, wetting dispersing agent 0.5%, alusil alloy powder 0.5%.Organic bond in slurry of the present invention plays dispersion powder and adjustment printing in the slurry, so that slurry is had good moulding and depth-width ratio after the thin grid printing of halftone, reduces the shading-area of cell backside, improve back side efficiency.
Description
Technical field
The present invention relates to solar cell size technical fields, more particularly, to one kind by organic bond, inorganic bond
Agent, aluminium powder and solar energy back field aluminum paste for two-sided PERC battery process of additive composition and preparation method thereof.
Background technique
Since P-type crystal silicon conventional batteries photoelectric conversion efficiency has reached bottleneck stage, and market is to high-power battery
Demand is increasing, therefore there is an urgent need to the research and development of New Technologies and applications.
The two-sided PERC battery process of monocrystalline at home and abroad has extensive research in recent years, gradually expands market part
Volume.Two-sided PERC battery technology mainly makes overlayer passivation film (Al in cell backside2O3+SiNx), by laser ablation blunt
Change aperture or groove slot on film, for back side aluminium paste using grid line screen painting at laser grooving, wire casing or hole is can be filled in aluminium paste
Local Al-BSF is formed with silicon.Simultaneously after grid line screen painting, aluminium paste has good depth-width ratio, reduces cell backside
Shading-area improves cell backside efficiency.The advantage that this structure has generating electricity on two sides, aluminium paste consumption is greatly decreased, front effect
Rate can reach 21.85~22%, while the photoelectric conversion efficiency of cell backside can reach 16.5~17.6%.
Two-sided PERC battery technology backside laser etched line section is its prevailing technology, the laser rays etched on passivating film
It 30 μm~45 μm of diameter, 800 μm of line segment length, needs reduction silicon to extend out during aluminium paste high temperature sintering is with pasc reaction, avoids laser
Place's formation of bursting at the seams is empty, influences the formation of alusil alloy layer.
Summary of the invention
In view of the above-mentioned problems existing in the prior art, the applicant provides one kind to be applied to two-sided PERC battery work
Solar energy back field aluminum paste of skill and preparation method thereof.Organic bond in slurry of the present invention plays dispersion powder and tune in the slurry
The effect of whole printing makes slurry have good moulding and depth-width ratio after the thin grid printing of halftone, reduces cell backside
Shading-area improves back side efficiency.Inorganic bond in slurry, the softening melting in sintering, in aluminium layer and passivation after sintering
Adhesive force is provided between layer, while inorganic bond need to reduce the destruction to backside passivation film.By to organic in aluminium paste
Agent, the optimization of inorganic bond, aluminium powder and additive each component can promote the front and back photoelectric conversion of two-sided PERC battery
Efficiency.
Technical scheme is as follows:
A kind of solar energy back field aluminum paste applied to two-sided PERC battery process, raw material contained by the solar energy back field aluminum paste
And the mass percent of each raw material are as follows:
The mass percent of raw material contained by the organic bond and each raw material are as follows:
Ethyl cellulose 4~8%
Phenolic resin 5~9%
Organic solvent 83~91%；
The organic solvent is butyl cellosolve, butyl carbitol, diethylene glycol dibutyl ether, lecithin, one first of triethylene glycol
One of ether is a variety of.
The mass percent of raw material contained by the inorganic bond and each raw material are as follows: PbO 10%, SiO227%, B2O3
6%, ZnO 15%, SnO 9%, Al2O312%, Li2O 6%, NaOH 15%；
Above-mentioned raw materials are sufficiently mixed uniformly in batch mixer, are distributed into porcelain crucible, are put into 145~150 DEG C of baking oven
In, it dries 2 hours；It is subsequently placed into melting in 1050 DEG C of high temperature melting furnace, smelting time is 1.5 hours, is taken out after melting
The water quenching in pure water is carried out, melting solids is taken out after water quenching and dries moisture content, the processing of broken and ball milling is then carried out, melts
Inorganic binder particle meso-position radius is 3~5 μm after ball milling processing after refining, carries out water again later and separates admittedly, the solid that will be isolated
Object-inorganic bond is dried in 145~150 DEG C of baking oven to get the inorganic bond.
The purity of the aluminium powder is 99.98%, and Mass median diameter is 6.4 μm, and shape is spherical shape, span 1.45, pine dress
Density is 0.48g/cm3。
The levelling defoaming agent be 201- methyl-silicone oil, polyether modified silicon oil,Foamex 805、
One of Foamex 830 or a variety of.
The anti-settling agent is fumed silica.
The wetting dispersing agent isDispers651、One or both of Dispers 650
Mixing.
A kind of preparation method of the solar energy back field aluminum paste applied to two-sided PERC battery process, the preparation method is that:
By 18.5% organic bond, 2% inorganic bond, 77% aluminium powder, 1% levelling defoaming agent, 0.5% anti-settling agent, 0.5% wetting
Dispersing agent and 0.5% alusil alloy powder are dispersed with stirring after mixing, grind 4 hours with three-roll grinder to get the sun
It can back field aluminum paste.
The present invention is beneficial to be had the technical effect that
Other solid constituent wetabilitys such as the adhesive that the present invention uses and aluminium powder are good, pass through ethyl cellulose and phenolic aldehyde
The organic bond that resin collocation is constituted has good moulding performance, good in the thin aperture plate version aluminium paste printing of 150 μm of width,
Alum gate line uniform ground after sintering, 165 μm of width, highly up to 23 μm, depth-width ratio reaches 0.14；
The organic bond that the present invention uses overcomes slurry sediment to unite phenomenon, improves aluminum slurry in preparing aluminium paste
The suspension and consistency of middle aluminium powder and other solid particles, aluminium powder and other solid particles are not easy precipitated and separated in aluminium paste,
Resting period can extend.
Contain lead oxide in the inorganic bond that this law invention uses, has height fluxing in inorganic binder system
Property, it can promote the formation of aluminium silicon eutectic in sintering process, improve alusil alloy layer uniformity and thickness.However lead ion (Pb2 +) there is extremely strong polarizability, there is stronger corrosion function to cell backside passivation membrane substance silicon nitride, it is blunt in order to protect
Change the passivation effect of film, addition polarizability is than lead ion (Pb in this formula2+) weak lithium ion (Li+), to reduce formula
The dosage of middle lead oxide, to reduce inorganic bond to the aggressivity of passivating film silicon nitride；Using zinc oxide, work as inorganic bond
When ZnO content is higher than 12% in agent system, then ascendant trend is presented in its softening point and levelling temperature, this is primarily due to ZnO and exists
It is to belong to intermediate oxide in glass, when content is low, using zinc oxygen octahedra as network modifying oxide, weakens system
Stability, the softening point and levelling temperature for showing as glass system reduce.After content is more than a certain amount of, zinc oxygen forms tetrahedron
Into in the structural network of glass, keep the structure of glass system more stable, shows as glass softening point and levelling temperature liter
Height, the use of zinc oxide is primarily to control slurry to the aggressivity of different-thickness passivating film.
The alusil alloy powder that the present patent application uses is mainly aluminium silicon nanoscale alloy powder, which burns in high temperature
It can adjust aluminium silicon solid solubility in knot, inhibit the molten silicon in laser wire casing to extend out phenomenon, improve the physics filling rate of slurry, it can
It obtains thicker and LBSF layers uniform.
80~150 μm are designed in the thin grid width of back field aluminum paste halftone, aluminium paste printing is good, grid line uniform ground, sintering
Depth-width ratio can reach 0.14~0.22 afterwards.
7000~8500mPas/25 DEG C of the viscosity for the organic bond that the present invention uses, appearance glue is transparent, without miscellaneous
Matter.The appearance of aluminium powder is spherical in shape, purity > 99.8, and 5~8 μm of meso-position radius, span 1.1~1.5；Inorganic bond: purity >
99.8,3~5 μm of meso-position radius.
Detailed description of the invention
Fig. 1 is two-sided PERC battery structure schematic diagram.
In figure: 1, positive silver electrode；2, silicon nitride layer；3, local aluminum silicon alloy layer；4, alum gate line；5, backside passivation layer；6,
LBSF。
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is specifically described.
Embodiment 1
A kind of preparation method of the solar energy back field aluminum paste applied to two-sided PERC battery process, the preparation method is that:
By 18.5% organic bond, 2% inorganic bond, 77% aluminium powder, 1% levelling defoaming agent (201- methyl-silicone oil), 0.5% gas
Aerosil, 0.5% wetting dispersing agent (Dispers651) and 0.5% alusil alloy powder is dispersed with stirring mixing
After even, 4 hours are ground to get the solar energy back field aluminum paste with three-roll grinder.
The mass percent of raw material contained by the solar energy back field aluminum paste and each raw material are as follows:
The organic bond the preparation method comprises the following steps: by 8% ethyl cellulose, 7% phenolic resin, 15% terpinol,
20% butyl cellosolve, 15% butyl carbitol, 25% diethylene glycol dibutyl ether, 5% lecithin, 5% triethylene glycol monomethyl ether are thrown
Enter in reaction kettle, electric heating heating, mixing speed 60r/min, 120 DEG C constant temperature 3 hours, it is abundant to resin in reaction kettle and solvent
Dissolution mixing, with 280 mesh silk screen filters to get the organic bond after cooling.
The inorganic bond the preparation method comprises the following steps: by 10%PbO, 27%SiO2, 6%B2O3, 15%ZnO, 9%SnO,
12%Al2O3, 6%Li2O, 15%NaOH is sufficiently mixed uniformly in batch mixer, is distributed into porcelain crucible, and 150 DEG C of baking is put into
In case, dry 2 hours；It is subsequently placed into melting in 1050 DEG C of high temperature melting furnace, smelting time is 1.5 hours, is taken after melting
The water quenching in pure water is carried out out, melting solids is taken out after water quenching and dries moisture content, then carries out the processing of broken and ball milling,
Inorganic binder particle meso-position radius is 5 μm after ball milling processing after melting, carries out water again later and separates admittedly, the solid that will be isolated
Object-inorganic bond is dried in 150 DEG C of baking oven to get the inorganic bond.
The purity of the aluminium powder is 99.98%, and Mass median diameter is 6.4 μm, and shape is spherical shape, span 1.45, pine dress
Density is 0.48g/cm3。
Embodiment 2
A kind of preparation method of the solar energy back field aluminum paste applied to two-sided PERC battery process, the preparation method is that:
By 18.5% organic bond, 2% inorganic bond, 77% aluminium powder, 1% levelling defoaming agent (Foamex 805)、
0.5% fumed silica, 0.5% wetting dispersing agent (Dispers 650) and the stirring point of 0.5% alusil alloy powder
It dissipates after mixing, grinds 4 hours with three-roll grinder to get the solar energy back field aluminum paste.
The mass percent of raw material contained by the solar energy back field aluminum paste and each raw material are as follows:
The organic bond the preparation method comprises the following steps: by 4% ethyl cellulose, 9% phenolic resin, 40% ethylene glycol, two fourth
Ether, 25% diethylene glycol dibutyl ether, 22% triethylene glycol monomethyl ether are put into reaction kettle, electric heating heating, mixing speed 60r/min,
120 DEG C constant temperature 3 hours, sufficiently dissolve mixing to resin in reaction kettle and solvent, it is cooling after with 280 mesh silk screen filters to get institute
State organic bond.
The inorganic bond the preparation method comprises the following steps: by 10%PbO, 27%SiO2, 6%B2O3, 15%ZnO, 9%SnO,
12%Al2O3, 6%Li2O, 15%NaOH is sufficiently mixed uniformly in batch mixer, is distributed into porcelain crucible, and 145 DEG C of baking is put into
In case, dry 2 hours；It is subsequently placed into melting in 1050 DEG C of high temperature melting furnace, smelting time is 1.5 hours, is taken after melting
The water quenching in pure water is carried out out, melting solids is taken out after water quenching and dries moisture content, then carries out the processing of broken and ball milling,
Inorganic binder particle meso-position radius is 3 μm after ball milling processing after melting, carries out water again later and separates admittedly, the solid that will be isolated
Object-inorganic bond is dried in 145 DEG C of baking oven to get the inorganic bond.
The purity of the aluminium powder is 99.98%, and Mass median diameter is 6.4 μm, and shape is spherical shape, span 1.45, pine dress
Density is 0.48g/cm3。
Embodiment 3
A kind of preparation method of the solar energy back field aluminum paste applied to two-sided PERC battery process, the preparation method is that:
By 18.5% organic bond, 2% inorganic bond, 77% aluminium powder, 1% levelling defoaming agent (Foamex 830)、
0.5% fumed silica, 0.5% wetting dispersing agent (
Dispers651:Ispers 650=1:1) and 0.5% alusil alloy powder be dispersed with stirring it is uniformly mixed
Afterwards, 4 hours are ground to get the solar energy back field aluminum paste with three-roll grinder.
The mass percent of raw material contained by the solar energy back field aluminum paste and each raw material are as follows:
The organic bond the preparation method comprises the following steps: by 6% ethyl cellulose, 5% phenolic resin, 30% terpinol,
10% butyl cellosolve, 5% butyl carbitol, 44% diethylene glycol dibutyl ether are put into reaction kettle, electric heating heating, stirring
Speed 60r/min, 120 DEG C constant temperature 3 hours, sufficiently dissolve mixing to resin in reaction kettle and solvent, it is cooling after with 280 mesh silk screens
Filtering is to get the organic bond.
The inorganic bond the preparation method comprises the following steps: by 10%PbO, 27%SiO2, 6%B2O3, 15%ZnO, 9%SnO,
12%Al2O3, 6%Li2O, 15%NaOH is sufficiently mixed uniformly in batch mixer, is distributed into porcelain crucible, and 150 DEG C of baking is put into
In case, dry 2 hours；It is subsequently placed into melting in 1050 DEG C of high temperature melting furnace, smelting time is 1.5 hours, is taken after melting
The water quenching in pure water is carried out out, melting solids is taken out after water quenching and dries moisture content, then carries out the processing of broken and ball milling,
Inorganic binder particle meso-position radius is 5 μm after ball milling processing after melting, carries out water again later and separates admittedly, the solid that will be isolated
Object-inorganic bond is dried in 145 DEG C of baking oven to get the inorganic bond.
The purity of the aluminium powder is 99.98%, and Mass median diameter is 6.4 μm, and shape is spherical shape, span 1.45, pine dress
Density is 0.48g/cm3。
Test case:
Slurry made from embodiment 1 is carried out to the test of the performances such as fineness, sheet resistance and viscosity, test result is as shown in table 1:
Table 1
Depth-width ratio test: slurry is measured microscopically aluminium using 3D after 80 μm and 150 μm of width grid line screen painting sintering
The high wide data of grid line.
Slurry is tested in the filling rate of laser wire casing: after slurry sintering, cell piece chooses 3 different locations, strikes off aluminium layer,
Every place's sample point chooses 40 sections of laser wire casings, and every section of wire casing is 800 μm long, using the micro- sem observation of 3D and measures laser wire casing sky
Hole length obtains the mean value of filled therewith rate by calculating.
Claims (8)
1. a kind of solar energy back field aluminum paste applied to two-sided PERC battery process, which is characterized in that the solar energy back surface field aluminium
Starch the mass percent of contained raw material and each raw material are as follows:
2. solar energy back field aluminum paste according to claim 1, which is characterized in that raw material contained by the organic bond and each
The mass percent of raw material are as follows:
Ethyl cellulose 4~8%
Phenolic resin 5~9%
Organic solvent 83~91%；
The organic solvent is butyl cellosolve, in butyl carbitol, diethylene glycol dibutyl ether, lecithin, triethylene glycol monomethyl ether
It is one or more.
3. solar energy back field aluminum paste according to claim 1, which is characterized in that raw material contained by the inorganic bond and each
The mass percent of raw material are as follows: PbO 10%, SiO227%, B2O36%, ZnO 15%, SnO 9%, Al2O312%, Li2O
6%, NaOH 15%；
Above-mentioned raw materials are sufficiently mixed uniformly in batch mixer, are distributed into porcelain crucible, are put into 145~150 DEG C of baking oven, dried
2 hours；It is subsequently placed into melting in 1050 DEG C of high temperature melting furnace, smelting time is 1.5 hours, takes out and carries out after melting
Water quenching in pure water takes out melting solids and dries moisture content, then carries out the processing of broken and ball milling, ball after melting after water quenching
Inorganic binder particle meso-position radius is 3~5 μm after mill processing, carries out water again later and separates admittedly, and the solids-isolated is inorganic
Adhesive is dried in 145~150 DEG C of baking oven to get the inorganic bond.
4. solar energy back field aluminum paste according to claim 1, which is characterized in that the purity of the aluminium powder is 99.98%, is put down
Equal meso-position radius is 6.4 μm, and shape is spherical shape, span 1.45, apparent density 0.48g/cm3。
5. solar energy back field aluminum paste according to claim 1, which is characterized in that the levelling defoaming agent is 201- methyl silicon
Oil, polyether modified silicon oil,Foamex 805、One of Foamex 830 or a variety of.
6. solar energy back field aluminum paste according to claim 1, which is characterized in that the anti-settling agent is fumed silica.
7. solar energy back field aluminum paste according to claim 1, which is characterized in that the wetting dispersing agent is
Dispers651、One or both of Dispers 650 mixing.
8. the preparation method described in a kind of claim 1 applied to the solar energy back field aluminum paste of two-sided PERC battery process, special
Sign is, the preparation method is that: 18.5% organic bond, 2% inorganic bond, 77% aluminium powder, 1% levelling are defoamed
Agent, 0.5% anti-settling agent, 0.5% wetting dispersing agent and 0.5% alusil alloy powder are dispersed with stirring after mixing, are ground with three rollers
Machine grinds 4 hours to get the solar energy back field aluminum paste.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010117207A2 (en) * | 2009-04-07 | 2010-10-14 | Lg Innotek Co., Ltd. | Paste and solar cell using the same |
| CN102324267A (en) * | 2011-08-18 | 2012-01-18 | 江苏泓源光电科技有限公司 | High-photoelectric-conversion-efficiency crystalline silicon solar battery aluminum paste and preparation method thereof |
| CN106935309A (en) * | 2015-12-29 | 2017-07-07 | 湖南利德电子浆料股份有限公司 | Passivating back crystal silicon solar energy battery aluminium paste and preparation method thereof |
| CN107622812A (en) * | 2017-08-28 | 2018-01-23 | 广州市儒兴科技开发有限公司 | A kind of two-sided PERC crystal-silicon solar cells aluminium paste of p-type and preparation method thereof |
-
2019
- 2019-01-03 CN CN201910005332.1A patent/CN109698039B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010117207A2 (en) * | 2009-04-07 | 2010-10-14 | Lg Innotek Co., Ltd. | Paste and solar cell using the same |
| CN102324267A (en) * | 2011-08-18 | 2012-01-18 | 江苏泓源光电科技有限公司 | High-photoelectric-conversion-efficiency crystalline silicon solar battery aluminum paste and preparation method thereof |
| CN106935309A (en) * | 2015-12-29 | 2017-07-07 | 湖南利德电子浆料股份有限公司 | Passivating back crystal silicon solar energy battery aluminium paste and preparation method thereof |
| CN107622812A (en) * | 2017-08-28 | 2018-01-23 | 广州市儒兴科技开发有限公司 | A kind of two-sided PERC crystal-silicon solar cells aluminium paste of p-type and preparation method thereof |
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