CN105244074B - A kind of crystal silicon solar energy battery aluminium paste - Google Patents
A kind of crystal silicon solar energy battery aluminium paste Download PDFInfo
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- CN105244074B CN105244074B CN201510719537.8A CN201510719537A CN105244074B CN 105244074 B CN105244074 B CN 105244074B CN 201510719537 A CN201510719537 A CN 201510719537A CN 105244074 B CN105244074 B CN 105244074B
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- silicon solar
- aluminium paste
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 115
- 239000004411 aluminium Substances 0.000 title claims abstract description 96
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 41
- 239000010703 silicon Substances 0.000 title claims abstract description 41
- 239000013078 crystal Substances 0.000 title claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 38
- 239000011230 binding agent Substances 0.000 claims abstract description 19
- 239000000725 suspension Substances 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract description 11
- 239000006185 dispersion Substances 0.000 claims abstract description 7
- 239000011256 inorganic filler Substances 0.000 claims abstract description 7
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 7
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 6
- 239000005543 nano-size silicon particle Substances 0.000 claims description 6
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 6
- 239000000470 constituent Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 claims description 4
- 239000003999 initiator Substances 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- 239000008096 xylene Substances 0.000 claims description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- 239000001856 Ethyl cellulose Substances 0.000 claims description 3
- 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 3
- 239000000020 Nitrocellulose Substances 0.000 claims description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 3
- 229910000416 bismuth oxide Inorganic materials 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 3
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims description 3
- 229920001249 ethyl cellulose Polymers 0.000 claims description 3
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 229920001220 nitrocellulos Polymers 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 239000009719 polyimide resin Substances 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000007790 solid phase Substances 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000004593 Epoxy Substances 0.000 claims 1
- 238000005245 sintering Methods 0.000 abstract description 10
- 239000000853 adhesive Substances 0.000 abstract description 8
- 230000001070 adhesive effect Effects 0.000 abstract description 8
- 239000002002 slurry Substances 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 239000003960 organic solvent Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229940023462 paste product Drugs 0.000 description 3
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 2
- 239000012074 organic phase Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 description 1
- OZAIFHULBGXAKX-VAWYXSNFSA-N AIBN Substances N#CC(C)(C)\N=N\C(C)(C)C#N OZAIFHULBGXAKX-VAWYXSNFSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000002829 nitrogen Chemical class 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- PZNCOKOVCBKUHR-UHFFFAOYSA-N pyrrolidin-2-one;1,2-xylene Chemical compound O=C1CCCN1.CC1=CC=CC=C1C PZNCOKOVCBKUHR-UHFFFAOYSA-N 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 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
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Photovoltaic Devices (AREA)
- Conductive Materials (AREA)
Abstract
The invention discloses a kind of crystal silicon solar energy battery aluminium paste and preparation method thereof, belong to technical field of solar batteries, aluminum slurry easily occurs that silicon chip adhesive force is good, the technical problems such as micro-crack easily occurs in aluminium film surface after sintering to efficiently solve battery aluminium paste of the prior art.Crystal silicon solar energy battery aluminium paste of the invention, including following components, each component mass percent is：General aluminium powder 50~80%；Nano aluminum suspension 1~15%；Inorganic binder 1~13%；Organic binder bond 1~30%；Inorganic filler 0.1~1%；The mass percent sum of each component is 100%.Its preparation method is proportionally to weigh each component, and after being well mixed using dispersion machine, it is 15~20 microns to be ground to particle diameter with three-roll grinder, and viscosity is 25000~35000mPas, you can obtain crystal silicon solar energy battery aluminium paste.
Description
Technical field
The invention belongs to technical field of solar batteries, and in particular to a kind of crystal silicon solar energy battery aluminium paste, also relate to
And this kind of preparation method of crystal silicon solar energy battery aluminium paste.
Background technology
Crystal silicon solar energy battery is always with the fastest developing speed in area of solar cell, the maximum class in market, its
The middle aluminium paste as crystal silicon solar energy battery anode material, its mainly by conductive phase, inorganic binder, additive, have airborne
Body is constituted.The aluminium paste for preparing using be screen printed onto after silicon chip surface again with silver paste co-sintering.But use existing material and work
Skill, after sintering aluminum slurry easily occur that silicon chip adhesive force is good, the defects such as micro-crack easily occurs in aluminium film surface.The present inventor passes through
Research found, mainly organic phase is volatilized too fast in sintering process, causes aluminium and inter polysilicon to produce compared with concrete dynamic modulus, and printing
Wet aluminium film also fails to form fine and close aluminium film in time in sintering because of the volatilization of organic phase afterwards, so as to the scarce of micro-crack occur
Fall into.
The content of the invention
The technical problems to be solved by the invention are just to provide a kind of crystal silicon solar energy battery aluminium paste, and adhesive force is good,
Aluminium film surface is non-microcracked.
It is a further object of the present invention to provide this kind of preparation method of crystal silicon solar energy battery aluminium paste, process conditions letter
It is single, it is with low cost.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：A kind of crystal silicon solar energy battery aluminium paste,
Including following components, each component mass percent is：
The mass percent sum of each component is 100%.
By increasing nano aluminum suspension constituent, aluminum slurry easily the present invention occurs after sintering to efficiently solve prior art
Silicon chip adhesive force is not good, the technical problems such as micro-crack easily occurs in aluminium film surface.Specific mechanism is as follows：Because nano aluminum suspension is
What nano level aluminium powder was obtained after being wrapped up by organic solvent, when being sintered after aluminium paste printing, outer layer organic solvent coating
After volatilization, nanometer aluminium powder is because the nano effect of metal, can greatly reduce the fusing point of metal during less than 100nm；And, aluminium paste
During material sintering while organic solvent coating volatilizees and decomposes, nanometer aluminium powder is to start to melt and flow, general so as to fill up
Aluminium powder and the hole of silicon face, fundamentally improve the releasing area of aluminium and silicon, form the back of the body electric field of more effective aluminium pastes, and
Solve the problems, such as that silicon chip adhesive force is good and micro-crack of aluminium film surface.In order to eliminate the internal stress produced in sintering process,
Reduce the warpage of cell piece, add a small amount of inorganic filler, the purpose for effectively reducing cell piece warpage can be reached.
Preferably, including following components, each component mass percent is：
The mass percent sum of each component is 100%, wherein, inorganic filler is nano silicon oxide.
Preferably, including following components, each component mass percent is：
Preferably, including following components, each component mass percent is：
Preferably, the ball aluminum powder that the general aluminium powder is respectively 6~7 microns and 1~2 micron by particle diameter is according to 4:1
Mass ratio is mixed.
Preferably, the preparation method of the nano aluminum suspension is as follows：Nanometer aluminium powder that particle diameter is 20~80nm is taken in two
In toluene solution, while adding vinylpyrrolidone monomer, the mixed solution for obtaining ultrasonic wave is added occasionally after disperseing 10min
Nitrogen class initiator, in initiated polymerization under 60 DEG C of temperature, nitrogen atmospheres, fully carries out solid-liquid after reaction using supercentrifuge
It is separated, extracts lower floor's solid phase and add the configuration of equivalent dimethylbenzene and obtain nano aluminum suspension.
Because nanoscale aluminium powder reactivity is high, aluminium powder is not directly stored in alcohols, water or contains reaction higher
In the solvent mixture of active material, the present invention is to avoid nanometer aluminium powder surface in storage and aluminium paste configuration process from being oxidized,
Therefore reactive cladding is carried out in vinylpyrrolidone monomer to the nanometer aluminium powder for using in advance, one is formed on aluminium powder surface
Layer organic coating film, aluminium paste is influenceed so as to avoid nanometer aluminium powder because the misoperation surface for using, storing, shifting is oxidized
Back of the body electrical efficiency.
The organic solvent that can not be dissolved each other with water using dimethylbenzene, benzene class etc. cleans nanometer aluminium powder in ultrasonic wave, after cleaning
Nanometer aluminium powder surface is coated by xylene organic solvent, forms organic coating film on nanometer aluminium powder surface, it is to avoid nanometer aluminium powder
The reunion of powder, but the nanometer aluminium powder for being coated by dimethylbenzene simultaneously is in later stage slurry configuration process, nanometer aluminium powder outer surface
Organic coating film is easily destroyed by other organic solvents.Therefore the present invention is using the nanometer aluminium powder and vinyl for coating dimethylbenzene
Pyrrolidone monomeric (abbreviation NVP monomers), azo-initiator azodiisobutyronitrile (abbreviation AIBN) etc. are in xylene solution
Monomer initiation is carried out, the nanometer aluminium powder of polyvinylpyrrolidone cladding is obtained.And aluminium powder is coated with this be added to final aluminium paste
In proportioning, the performance of existing aluminium paste is greatly lifted.
Preferably, the inorganic binder be bismuth oxide, silica, zinc oxide, boron trioxide in one kind or
It is several.
Preferably, the organic binder bond is polyvinyl butyral resin, acrylic resin, polyimide resin, polyphenylene sulfide
One or more in ether resin, phenolic resin, epoxy resin, ethyl cellulose, nitrocellulose.
This kind of preparation method of crystal silicon solar energy battery aluminium paste, proportionally weighs each component, mixed using dispersion machine
After closing uniformly, it is 15~20 microns to be ground to particle diameter with three-roll grinder, and viscosity is 25000~35000mPas, you can obtained
Crystal silicon solar energy battery aluminium paste.
Compared with prior art, it is an advantage of the invention that：The present invention by increasing nano aluminum suspension constituent, due to nanometer
Aluminium suspension is obtained after nano level aluminium powder is wrapped up by organic solvent, and when being sintered after aluminium paste printing, outer layer is organic
After the volatilization of solvent coating, nanometer aluminium powder can greatly reduce the molten of metal because the nano effect of metal during less than 100nm
Point；And, when aluminum slurry is sintered while organic solvent coating volatilizees and decomposes, nanometer aluminium powder is to start to melt and flow,
So as to fill up the hole of general aluminium powder and silicon face, the releasing area of aluminium and silicon is fundamentally improved, form more effective aluminium
The back of the body electric field of slurry, and solve the problems, such as that silicon chip adhesive force is good and micro-crack of aluminium film surface.In addition, sintered in order to eliminate
The internal stress produced in journey, reduces the warpage of cell piece, adds a small amount of inorganic filler nano silicon oxide, can reach effectively reduction
The purpose of cell piece warpage.
With reference to specific embodiment, the invention will be further described：
Specific embodiment
A kind of crystal silicon solar energy battery aluminium paste embodiment 1 of the present invention, including following components, each component mass percent
For：
The ball aluminum powder that the general aluminium powder is respectively 6~7 microns and 1~2 micron by particle diameter is according to 4:1 mass ratio is mixed
Conjunction is formed.
The preparation method of the nano aluminum suspension is as follows：Take particle diameter be 40nm nanometer aluminium powder in xylene solution,
Vinylpyrrolidone monomer is added simultaneously, and azo-initiator is added after the mixed solution ultrasonic wave dispersion 10min for obtaining,
In initiated polymerization under 60 DEG C of temperature, nitrogen atmospheres, Solid-Liquid Separation fully is carried out using supercentrifuge after reaction, extracted
Lower floor's solid phase adds the configuration of equivalent dimethylbenzene and obtains nano aluminum suspension.
The inorganic binder is one or more in bismuth oxide, silica, zinc oxide, boron trioxide.
The organic binder bond be polyvinyl butyral resin, acrylic resin, polyimide resin, polyphenylene sulfide,
One or more in phenolic resin, epoxy resin, ethyl cellulose, nitrocellulose.
This kind of preparation method of crystal silicon solar energy battery aluminium paste, proportionally weighs each component, mixed using dispersion machine
After closing uniformly, particle diameter is ground to for 15~20 microns with three-roll grinder, viscosity is 30000mPas, you can obtain crystalline silicon
Aluminium paste used for solar batteries.
A kind of crystal silicon solar energy battery aluminium paste embodiment 2 of the present invention, its structure composition is substantially similar to embodiment 1,
Difference is：Including following components, each component mass percent is：
This kind of preparation method of crystal silicon solar energy battery aluminium paste, it is same as Example 1.
A kind of battery aluminium paste comparative example, including following components in the prior art, each component mass percent is：78% leads to
Use aluminium powder；12% inorganic binder；10% organic binder bond.
The preparation method of this kind of battery aluminium paste is as follows：Each component is proportionally weighed, after being well mixed using dispersion machine,
It is 15~20 microns to be ground to particle diameter with three-roll grinder, and viscosity is 25000~35000mPas.
To the crystal silicon solar energy battery that embodiment 1~2 is obtained aluminium paste product, it is screen printed onto using 250 mesh half tones
In the Monocrystalline silicon cell piece of specification 156mm × 156mm, the aluminium back side is formed, after entering Muffle furnace drying, silver-colored shape is carried on the back in aluminium back up
Into back electrode, enter Muffle furnace drying, then print front side silver paste in cell piece another side (front), after sintering furnace is sintered
To Monocrystalline silicon cell piece, the performances such as the apparent of cell piece, adhesive force, warpage and photoelectric conversion rate are detected, while with
Comparative example is compared, and testing result is as shown in table 1.
Table 1
Test result shows, the crystal silicon solar energy battery that the embodiment of the present invention 1~2 is obtained aluminium paste product, and existing
The comparative example of technology is compared, and effectively eliminates the problem of the micro-crack of aluminium film surface；And silicon chip adhesive force is significantly improved, and reaches
To more than 2 times of comparative example；And warpage is decreased obviously, cell piece warpage is effectively reduced, illustrate that addition is inorganic on a small quantity and fill out
Material nano silicon oxide, can eliminate the internal stress produced in sintering process, reduce the warpage of cell piece；In addition, photoelectric conversion rate
Also it is significantly improved than comparative example, it is seen then that the crystal silicon solar energy battery of the invention combination property of aluminium paste product is than existing
The battery aluminium paste of technology is significantly improved, and has good application prospect.
Specific embodiment of the invention is the foregoing is only, but technical characteristic of the invention is not limited thereto, Ren Heben
The technical staff in field in the field of the invention, all cover among the scope of the claims of the invention by the change or modification made.
Claims (8)
1. a kind of crystal silicon solar energy battery aluminium paste, it is characterised in that：Including following components, each component mass percent is：
General aluminium powder 50~80%；
Nano aluminum suspension 1~15%；
Inorganic binder 1~13%；
Organic binder bond 1~30%；
Inorganic filler 0.1~1%；
The mass percent sum of each component is 100%；
Nanometer aluminium powder is the nanometer aluminium powder of polyvinylpyrrolidone cladding in the nano aluminum suspension；
The preparation method of the nano aluminum suspension is as follows：Nanometer aluminium powder that particle diameter is 20~80nm is taken in xylene solution,
Vinylpyrrolidone monomer is added simultaneously, and azo-initiator is added after the mixed solution ultrasonic wave dispersion 10min for obtaining,
In initiated polymerization under 60 DEG C of temperature, nitrogen atmospheres, Solid-Liquid Separation fully is carried out using supercentrifuge after reaction, extracted
Lower floor's solid phase adds the configuration of equivalent dimethylbenzene and obtains nano aluminum suspension.
2. a kind of crystal silicon solar energy battery aluminium paste as claimed in claim 1, it is characterised in that：Including following components, respectively
Constituent mass percentage is：
General aluminium powder 60~70%；
Nano aluminum suspension 8~15%；
Inorganic binder 10~13%；
Organic binder bond 7~15%；
Inorganic filler 0.1~1%；
The mass percent sum of each component is 100%, wherein, inorganic filler is nano silicon oxide.
3. a kind of crystal silicon solar energy battery aluminium paste as claimed in claim 2, it is characterised in that：Including following components, respectively
Constituent mass percentage is：
General aluminium powder 61.5%；
Nano aluminum suspension 15%；
Inorganic binder 13%；
Organic binder bond 10%；
Nano silicon oxide 0.5%.
4. a kind of crystal silicon solar energy battery aluminium paste as claimed in claim 2, it is characterised in that：Including following components, respectively
Constituent mass percentage is：
General aluminium powder 68%；
Nano aluminum suspension 10%；
Inorganic binder 12.5%；
Organic binder bond 9%；
Nano silicon oxide 0.5%.
5. a kind of crystal silicon solar energy battery aluminium paste as described in Claims 1-4 any one, it is characterised in that：It is described
The ball aluminum powder that general aluminium powder is respectively 6~7 microns and 1~2 micron by particle diameter is according to 4:1 mass ratio is mixed.
6. a kind of crystal silicon solar energy battery aluminium paste as described in Claims 1-4 any one, it is characterised in that：It is described
Inorganic binder is one or more in bismuth oxide, silica, zinc oxide, boron trioxide.
7. a kind of crystal silicon solar energy battery aluminium paste as described in Claims 1-4 any one, it is characterised in that：It is described
Organic binder bond is polyvinyl butyral resin, acrylic resin, polyimide resin, polyphenylene sulfide, phenolic resin, epoxy
One or more in resin, ethyl cellulose, nitrocellulose.
8. a kind of crystal silicon solar energy battery aluminium paste as claimed in claim 1, it is characterised in that：Proportionally weigh each group
Point, after being well mixed using dispersion machine, it is 15~20 microns to be ground to particle diameter with three-roll grinder, and viscosity is 25000~35000
MPas, you can obtain crystal silicon solar energy battery aluminium paste.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510719537.8A CN105244074B (en) | 2015-10-30 | 2015-10-30 | A kind of crystal silicon solar energy battery aluminium paste |
| CN201710311723.7A CN107293350A (en) | 2015-10-30 | 2015-10-30 | A kind of preparation method of nano aluminum suspension |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510719537.8A CN105244074B (en) | 2015-10-30 | 2015-10-30 | A kind of crystal silicon solar energy battery aluminium paste |
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| Publication Number | Publication Date |
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| CN105244074A CN105244074A (en) | 2016-01-13 |
| CN105244074B true CN105244074B (en) | 2017-06-20 |
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| CN104637568A (en) * | 2015-02-02 | 2015-05-20 | 南通天盛新能源科技有限公司 | Aluminum paste for all-aluminum back surface field crystalline silicon solar cell and preparation method thereof |
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| CN101986391A (en) * | 2010-12-10 | 2011-03-16 | 长沙族兴金属颜料有限公司 | Front silver paste for crystalline silicon solar battery plate and preparation method thereof |
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| CN104637568A (en) * | 2015-02-02 | 2015-05-20 | 南通天盛新能源科技有限公司 | Aluminum paste for all-aluminum back surface field crystalline silicon solar cell and preparation method thereof |
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