CN107293350A - A kind of preparation method of nano aluminum suspension - Google Patents
A kind of preparation method of nano aluminum suspension Download PDFInfo
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- CN107293350A CN107293350A CN201710311723.7A CN201710311723A CN107293350A CN 107293350 A CN107293350 A CN 107293350A CN 201710311723 A CN201710311723 A CN 201710311723A CN 107293350 A CN107293350 A CN 107293350A
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 92
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000725 suspension Substances 0.000 title claims abstract description 14
- 239000004411 aluminium Substances 0.000 claims abstract description 76
- 239000000843 powder Substances 0.000 claims abstract description 31
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 239000000178 monomer Substances 0.000 claims abstract description 7
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003999 initiator Substances 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 claims abstract description 5
- 239000008096 xylene Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000011259 mixed solution Substances 0.000 claims abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 4
- 239000007790 solid phase Substances 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims abstract description 3
- 239000000284 extract Substances 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 29
- 229910052710 silicon Inorganic materials 0.000 description 29
- 239000010703 silicon Substances 0.000 description 29
- 239000013078 crystal Substances 0.000 description 19
- 238000005245 sintering Methods 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 239000003960 organic solvent Substances 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 239000011230 binding agent Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000002002 slurry Substances 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 4
- 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
- 239000006185 dispersion Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011256 inorganic filler Substances 0.000 description 3
- 229910003475 inorganic filler Inorganic materials 0.000 description 3
- 239000005543 nano-size silicon particle Substances 0.000 description 3
- 229940023462 paste product Drugs 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 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
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 239000001856 Ethyl cellulose Substances 0.000 description 2
- 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 description 2
- 239000000020 Nitrocellulose Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910000416 bismuth oxide Inorganic materials 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-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
- 229920001249 ethyl cellulose Polymers 0.000 description 2
- 235000019325 ethyl cellulose Nutrition 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 2
- 229920001220 nitrocellulos Polymers 0.000 description 2
- 239000012074 organic phase Substances 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000009719 polyimide resin Substances 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 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
- 239000011787 zinc oxide Substances 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
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007246 mechanism Effects 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
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 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
- 238000011160 research Methods 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
- 238000012546 transfer Methods 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)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Photovoltaic Devices (AREA)
- Conductive Materials (AREA)
Abstract
The invention discloses a kind of preparation method of nano aluminum suspension, the preparation method is as follows：The nanometer aluminium powder that particle diameter is 20~80nm is taken in xylene solution, vinylpyrrolidone monomer is added simultaneously, obtained mixed solution adds azo-initiator after disperseing 10min with ultrasonic wave, in initiated polymerization under 60 DEG C of temperature, nitrogen atmospheres, Solid-Liquid Separation fully is carried out using supercentrifuge after reaction, lower floor's solid phase is extracted and adds the configuration of equivalent dimethylbenzene and obtain nano aluminum suspension.
Description
The application is divisional application, and original bill Application No. 2015107195378, the applying date is on October 30th, 2015, hair
A kind of bright entitled crystal silicon solar energy battery aluminium paste.
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 the preparation method of this kind 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 is because the volatilization of organic phase also fails to form fine and close aluminium film in time in sintering, so as to lacking for micro-crack occur afterwards
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 the preparation method of this kind 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%.
The present invention is by increasing nano aluminum suspension constituent, and efficiently solving prior art, aluminum slurry easily occurs after sintering
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；Moreover, aluminium paste
During material sintering while organic solvent coating volatilizees and decomposed, nanometer aluminium powder is to start to melt and flow, so as to fill up general
The hole of aluminium powder and silicon face, fundamentally improves the releasing area of aluminium and silicon, forms the back of the body electric field of more effective aluminium pastes, and
The problem of solving not good silicon chip adhesive force and aluminium film surface micro-crack.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 of effectively reduction cell piece warpage can be reached.
It is preferred that, including following components, each component mass percent is：
The mass percent sum of each component is 100%, wherein, inorganic filler is nano silicon oxide.
It is preferred that, including following components, each component mass percent is：
It is preferred that, including following components, each component mass percent is：
It is preferred that, including following components, each component mass percent is：
It is preferred that, the general aluminium powder is respectively 6~7 microns and 1~2 micron of ball aluminum powder according to 4 by particle diameter:1
Mass ratio is mixed.
It is preferred that, the preparation method of the nano aluminum suspension is as follows：The nanometer aluminium powder that particle diameter is 20~80nm is taken in two
In toluene solution, while adding vinylpyrrolidone monomer, obtained mixed solution ultrasonic wave disperses after 10min to add occasionally
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 containing higher reaction
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 carry out reactive cladding in vinylpyrrolidone monomer to the nanometer aluminium powder used in advance, one is formed on aluminium powder surface
Layer organic coating film, so as to avoid nanometer aluminium powder because using, storing, the misoperation surface of transfer is oxidized and influences aluminium paste
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 coated simultaneously by dimethylbenzene 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.
It is preferred that, the inorganic binder be bismuth oxide, silica, zinc oxide, boron trioxide in one kind or
It is several.
It is preferred that, 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.
The preparation method of this kind of crystal silicon solar energy battery aluminium paste, proportionally weighs each component, mixed using dispersion machine
After closing uniformly, it is 15~20 microns that particle diameter is ground to 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 is 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；Moreover, during aluminum slurry sintering while organic solvent coating volatilizees and decomposed, 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, more effective aluminium are formed
The back of the body electric field of slurry, and the problem of solve not good silicon chip adhesive force and aluminium film surface micro-crack.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 effective reduction
The purpose of cell piece warpage.
With reference to embodiment, the invention will be further described：
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 general aluminium powder is respectively 6~7 microns and 1~2 micron of ball aluminum powder according to 4 by particle diameter:1 mass ratio is mixed
Conjunction is formed.
The preparation method of the nano aluminum suspension is as follows：The nanometer aluminium powder that particle diameter is 40nm is taken in xylene solution,
Vinylpyrrolidone monomer is added simultaneously, and obtained mixed solution adds azo-initiator after disperseing 10min with ultrasonic wave,
In initiated polymerization under 60 DEG C of temperature, nitrogen atmospheres, Solid-Liquid Separation fully is carried out using supercentrifuge after reaction, is extracted
Lower floor's solid phase adds the configuration of equivalent dimethylbenzene and obtains nano aluminum suspension.
The inorganic binder is the 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.
The preparation method of this kind of crystal silicon solar energy battery aluminium paste, proportionally weighs each component, mixed using dispersion machine
After closing uniformly, particle diameter is ground to three-roll grinder for 15~20 microns, 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：
The preparation method of this kind of crystal silicon solar energy battery aluminium paste, it is same as Example 1.
A kind of crystal silicon solar energy battery aluminium paste embodiment 3 of the present invention, its structure composition is substantially similar to embodiment 1,
Difference is：Including following components, each component mass percent is：
The preparation method of this kind 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 that particle diameter is ground to three-roll grinder, and viscosity is 25000~35000mPas.
To the crystal silicon solar energy battery that embodiment 1~3 is obtained aluminium paste product, it is screen printed onto using 250 mesh half tones
In specification 156mm × 156mm Monocrystalline silicon cell piece, the aluminium back side is formed, is entered after 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 being sintered by sintering furnace
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
| It is apparent | Adhesive force (N) | Warpage (mm) | Photoelectric conversion rate (%) | |
| Embodiment 1 | Smooth flawless | 38 | 1 | 18.23 |
| Embodiment 2 | Smooth flawless | 35 | 1.2 | 18.30 |
| Embodiment 3 | Smooth flawless | 40 | 1 | 18.39 |
| Comparative example | It is smooth to have micro-crack | 15 | 1.9 | 17.18 |
Test result shows, the crystal silicon solar energy battery that the embodiment of the present invention 1~3 is obtained aluminium paste product, and existing
The comparative example of technology is compared, the problem of effectively eliminating 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, illustrates that addition is inorganic on a small quantity and fills out
Expect nano silicon oxide, the internal stress produced in sintering process can be eliminated, reduce the warpage of cell piece；In addition, photoelectric conversion rate
Also it is significantly improved than comparative example, it is seen then that crystal silicon solar energy battery of the invention is with the combination property of aluminium paste product than existing
The battery aluminium paste of technology is significantly improved, and has good application prospect.
The specific embodiment of the present invention is the foregoing is only, but the technical characteristic of the present invention is not limited thereto, Ren Heben
The technical staff in field is in the field of the invention, and the change or modification made all are covered among the scope of the claims of the present invention.
Claims (1)
1. a kind of preparation method of nano aluminum suspension, it is characterised in that preparation method is as follows：Take particle diameter receiving for 20~80nm
Rice aluminium powder is in xylene solution, while adding vinylpyrrolidone monomer, obtained mixed solution is scattered with ultrasonic wave
Azo-initiator is added after 10min, in initiated polymerization under 60 DEG C of temperature, nitrogen atmospheres, fully using at a high speed after reaction
Centrifuge carries out Solid-Liquid Separation, extracts lower floor's solid phase and adds the configuration of equivalent dimethylbenzene and obtain nano aluminum suspension.
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| CN201710311723.7A CN107293350A (en) | 2015-10-30 | 2015-10-30 | A kind of preparation method of nano aluminum suspension |
| CN201510719537.8A CN105244074B (en) | 2015-10-30 | 2015-10-30 | A kind of crystal silicon solar energy battery aluminium paste |
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| CN107274954A (en) * | 2017-05-26 | 2017-10-20 | 河南职业技术学院 | A kind of special silver paste for rear screen glass de-fog of car and its manufacture method |
| CN112934427A (en) * | 2019-11-26 | 2021-06-11 | 新疆硅基新材料创新中心有限公司 | Crushing and grinding SiOXMethod and apparatus |
| CN112133789A (en) * | 2020-09-22 | 2020-12-25 | 常州时创能源股份有限公司 | Double-sided PERC solar cell and preparation method thereof |
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| CN102258953A (en) * | 2011-07-11 | 2011-11-30 | 北京纳辰科技发展有限责任公司 | Nano aluminum paste and preparation method thereof |
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| CN104637568B (en) * | 2015-02-02 | 2017-02-01 | 南通天盛新能源股份有限公司 | Aluminum paste for all-aluminum back surface field crystalline silicon solar cell and preparation method thereof |
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| CN105244074A (en) | 2016-01-13 |
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