CN108417290A - A kind of solar cell aluminium paste and preparation method thereof - Google Patents
A kind of solar cell aluminium paste and preparation method thereof Download PDFInfo
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 76
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 239000004411 aluminium Substances 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title claims description 17
- 239000011521 glass Substances 0.000 claims abstract description 55
- 239000000843 powder Substances 0.000 claims abstract description 51
- 239000011230 binding agent Substances 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 239000000654 additive Substances 0.000 claims abstract description 11
- 230000000996 additive effect Effects 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 3
- 239000006185 dispersion Substances 0.000 claims description 18
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 7
- 239000003960 organic solvent Substances 0.000 claims description 7
- 229920000642 polymer Polymers 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
- 239000001856 Ethyl cellulose Substances 0.000 claims description 5
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical group CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 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
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Inorganic materials O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-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
- 229920001249 ethyl cellulose Polymers 0.000 claims description 5
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 5
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 5
- 239000005011 phenolic resin Substances 0.000 claims description 5
- 229920001568 phenolic resin Polymers 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 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
- ZFOZVQLOBQUTQQ-UHFFFAOYSA-N Tributyl citrate Chemical compound CCCCOC(=O)CC(O)(C(=O)OCCCC)CC(=O)OCCCC ZFOZVQLOBQUTQQ-UHFFFAOYSA-N 0.000 claims description 4
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(III) oxide Inorganic materials O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims description 4
- VXQBJTKSVGFQOL-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethyl acetate Chemical compound CCCCOCCOCCOC(C)=O VXQBJTKSVGFQOL-UHFFFAOYSA-N 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 229920002627 poly(phosphazenes) Polymers 0.000 claims 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 claims description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims 1
- 239000002994 raw material Substances 0.000 claims 1
- 238000005245 sintering Methods 0.000 abstract description 11
- 239000002002 slurry Substances 0.000 abstract description 10
- 238000009835 boiling Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 229910000632 Alusil Inorganic materials 0.000 abstract description 2
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 230000005669 field effect Effects 0.000 abstract description 2
- 239000006187 pill Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- 238000000498 ball milling Methods 0.000 description 3
- 229920006026 co-polymeric resin Polymers 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229920002521 macromolecule Polymers 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- YEAUATLBSVJFOY-UHFFFAOYSA-N tetraantimony hexaoxide Chemical compound O1[Sb](O2)O[Sb]3O[Sb]1O[Sb]2O3 YEAUATLBSVJFOY-UHFFFAOYSA-N 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 description 1
- 206010027146 Melanoderma Diseases 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005247 gettering Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
-
- 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)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Development (AREA)
- Electromagnetism (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Energy (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Glass Compositions (AREA)
- Photovoltaic Devices (AREA)
Abstract
The present invention provides a kind of solar cell aluminium paste, the composition of the aluminium paste includes according to mass percent calculating：Aluminium powder 70~80%, organic binder 15~25%, glass paste 2~5%, additive 0.1~3%, wherein the sum of each aluminium paste material quality percentage composition is 100%.Production method by improving glass paste improves the deployment conditions of glass powder in the slurry, gives full play to glass powder effect, promotes aluminium powder sintering, makes sintered aluminum membranous layer dense uniform, smooth, no aluminium pill, aluminium bud, and water boiling resistance performance is good；Alusil alloyization reaction is controlled, enhancing back surface field effect improves transfer efficiency.
Description
Technical field
The present invention relates to solar cell aluminium paste fields, and in particular to a kind of solar cell aluminium paste and preparation method thereof.
Background technology
Crystal silicon solar energy battery is a kind of semiconductor devices that luminous energy is directly changed into electric energy.P-type silicon solar-electricity
Pond, it usually needs in silicon substrate back up aluminum conductive electric slurry, then drying, sintering process, make aluminium atom diffuse into silicon body
In the middle, p-p+ knots are formed, the presence of the Al-BSF can reduce electrons and holes in the recombination rate at interface, increase carrier
Service life increases feux rouges effect, to play the role of promoting battery open circuit voltage and short circuit current.When forming Al-BSF, aluminium
Silico-aluminum can also be formed with silicon, this silico-aluminum layer can play the role of gettering, that is, absorb the impurity in silicon crystal lattice,
To play the role of promoting parallel resistance and fill factor, finally plays and improve photoelectric conversion efficiency.So the performance of aluminium paste
It is highly important for improving solar cell photoelectric characteristic.
The conducting aluminum paste of solar cell is matched by components such as aluminium powder, glass powder, organic binder and additives by certain
Than being prepared.Glass powder dissolves the oxidation film on aluminium powder surface to a certain degree in sintering process, and acceleration of sintering prevents aluminium powder from existing
Aggregation in sintering process avoids the formation of uneven back surface field (P+) layer；The Main physical chemistry of sintered membrane is also determined simultaneously
Characteristic.
In the prior art, improving aluminium paste electrical property is mainly improved from promotion aluminium powder sintering is fully sintered, because of glass powder
Peculiar property, prepare slurry and have a dispersion process, the problems such as dispersion is uneven, and part is reunited can not avoid, and product is caused to go out
Existing aluminium packet, blackspot, BSF layers it is uneven, influence electrical property.
Invention content
It is an object of the present invention to overcome defect existing in the prior art, a kind of solar cell aluminium paste, the aluminium are provided
The glass powder that glass paste is formed in slurry is dispersed in organic carrier, in final uniformly branch's aluminium paste system, aluminium powder is promoted to burn
Knot is complete, improves efficiency.
To achieve the above object, the present invention provides a kind of solar cell aluminium paste of high conductivity, the groups of the aluminium paste
Include at according to mass percent calculating：
Aluminium powder ... 70~80%,
Organic binder ... 15~25%,
Glass paste ... 2~5%,
Additive ... 0.1~3%,
The sum of wherein each aluminium paste material quality percentage composition is 100%.
As an optimization, the aluminium powder is spherical or spherical, and average grain diameter is 1~8 μm, and purity is more than 99.8%.
As an optimization, the additive is dispersant or levelling agent available on the market, and there is wettability, reduction to grind
Make slurry stably dispersing the time required to honed journey, while reducing system viscosity to improve slurry fluidity.
As an optimization, the composition of the organic binder includes according to mass percent calculating：10~20% polyphosphazene polymers
Close object and 80~90% organic solvents；The high molecular polymer is ethyl cellulose and phenolic resin, and high molecular polymer is
Low fever loses residual, the big polymer of viscoelastic modulus；The organic solvent be butyl carbitol, terpinol, tributyl citrate,
At least two in butyl carbitol acetate mix.
As an optimization, the glass paste is made of 20%~50% glass powder and 50~80% organic bonds.
As an optimization, the composition of the glass powder includes by mass percentage：Bi2O320~50%, B2O35~
15%, SiO210~30%, ZnO 5~10%, Sb2O31~15%, ZrO20~3%, V2O51~8%, Al2O30.5~
5%, BaO 0.1~2%, SrO 0~1%, La2O30~1%, the grain size D50 of the glass powder is 0.5~6 μm.Glass powder
Composition select rare earth oxide Bi2O3、Sb2O3、ZrO2、SrO、La2O3One or more of.
A kind of preparation method of solar cell aluminium paste
(1) 20~50% glass powders, 50%~80% organic bond are weighed, using dispersion machine 300~500rpm's
Disperse 10~30min under rotating speed；
(2) in three-roll grinder 10~15 times, the shearing force of three-roll grinder is stronger, after grinding glass powder dispersion compare
Uniformly obtain glass paste used；
(3) it presses aluminium paste mass percent to calculate, weighs 0.1~3% additive, 15~25% organic binders, 2~5%
Glass paste, 70~80% aluminium powders, using dispersion machine under 300~800rpm rotating speeds, disperse 30~50min, then ground in three rollers
It is ground 15~20 times on grinding machine, control grain size is no more than 15 μm to get to the solar cell aluminium paste of high conductivity.
In the preparation process of glass powder of the present invention, the fusing point of glass powder is controlled at 500~600 DEG C.
The present invention using above-mentioned component match, in the slurry to glass powder composition and adding technology carried out improve and it is excellent
Change, so that sintered-aluminium power sintering in crystal silicon solar battery back field is complete, form uniform and thick BSF layers, improves electrical
Energy.
The advantages of the present invention are：Present invention is generally directed to solar cells, have developed a kind of quick silk
Aluminium paste on wire mark brush to crystalline silicon forms uniform and thick BSF layers by high temperature sintering, improves doping concentration, uniform to close
Layer gold effectively reduces string resistance, fine and close aluminium layer improves electric current, finally improves photoelectric conversion efficiency, aluminium paste market prospects of the invention
It is wide.
Specific implementation mode
With reference to embodiment, the specific embodiment of the present invention is further described.Following embodiment is only used for more
Add and clearly demonstrate technical scheme of the present invention, and not intended to limit the protection scope of the present invention.
Embodiment 1
A kind of solar cell aluminium paste includes with lower part：
The preparation of organic binder：Macromolecule copolymer resin ethyl cellulose and phenolic resin mixing are weighed by mass parts
100r/min, electrical heating are warming up to 120 DEG C on dispersion machine after object 10% and the mixing of organic solvent 90%, disperse 50~70min,
Dispersing and dissolving obtains transparent, uniform organic bond；
The preparation of glass powder：Bi is weighed by mass parts2O346.5%, B2O315%, SiO213%, ZnO 7%, Sb2O3
10%, ZrO21.5%, V2O53%, Al2O33%, BaO 0.5%, La2O30.5%；
It is uniformly mixed with batch mixer, is packed into porcelain crucible, is put into Muffle furnace, in 1000~1100 DEG C, soaking time is
60min, by the glass powder particle after fusing using after ion water quenching, ball milling 2.5h is obtained to grain size through sieve in 0.5~6 μ
The glass binder of m；
The preparation of glass paste：20% glass powder, the mixing of 80% organic bond are weighed by mass parts, is existed using dispersion machine
Disperse 10~30min under 300~500rpm rotating speeds, obtain glass paste semi-finished product, in three-roll grinder 10 times, obtains glass paste；
Prepare cell aluminum paste：Aluminium powder 75%, glass paste 5%, organic binder 19.5%, additive are weighed by mass parts
0.5%；
Using dispersion machine under 600rpm rotating speeds, disperse 50min, then ground 15~20 times on three-roll grinder, controls
Diameter of pelletizing is not more than 15 μm, obtains aluminium paste.
Using the sample aluminium paste of above-mentioned preparation, the polysilicon chip of specification 156mm × 156mm is screen printed onto by 280 mesh
Upper formation back surface field is sintered, 790 DEG C of peak temperature into sintering furnace.Its performance data is tested after sintering is：Transformation efficiency is
18.49%, smooth in appearance keeps 10min not blistering without packet, 85 DEG C of boiling boiling.
Embodiment 2
A kind of solar cell aluminium paste includes with lower part：
The preparation of organic binder：Macromolecule copolymer resin ethyl cellulose and phenolic resin 10% are weighed by mass parts
100r/min, electrical heating are warming up to 120 DEG C on big dispersion machine after being mixed with organic solvent 90%, disperse 50~70min, and dispersion is molten
Solution, obtains transparent, uniform organic bond；
The preparation of glass powder：Bi is weighed by mass parts2O346.5%, B2O315%, SiO213%, ZnO 7%, Sb2O3
10%, ZrO21.5%, V2O53%, Al2O33%, BaO 0.5%, La2O30.5%；
It is uniformly mixed with batch mixer, is packed into porcelain crucible, is put into Muffle furnace, in 1000~1100 DEG C, soaking time is
60min, by the glass powder particle after fusing using after ion water quenching, ball milling 2.5h is obtained to grain size through sieve in 0.5~6 μ
The glass binder of m；
The preparation of glass paste：50% glass powder, the mixing of 50% organic bond are weighed by mass parts, is existed using dispersion machine
Disperse 10~30min under 300~500rpm rotating speeds, obtain glass paste semi-finished product, in three-roll grinder 10 times, obtains glass used
Slurry；
Prepare cell aluminum paste：Aluminium powder 75%, glass paste 2%, organic binder 22.5%, additive are weighed by mass parts
0.5%；
Using dispersion machine under 600rpm rotating speeds, disperse 50min, then ground 15~20 times on three-roll grinder, controls
Diameter of pelletizing is not more than 15 μm, obtains aluminium paste used；
Related preparation process is the same as embodiment 1；
Testing its property data is：Transformation efficiency is that 18.46%, smooth in appearance keeps 10min hardly without packet, 85 DEG C of boiling
Blistering.
Reference examples 1
A kind of solar cell aluminium paste includes with lower part：
The preparation of organic binder：Macromolecule copolymer resin ethyl cellulose and phenolic resin 10% are weighed by mass parts
100r/min, electrical heating are warming up to 120 DEG C on big dispersion machine after being mixed with organic solvent 90%, disperse 50~70min, and dispersion is molten
Solution, obtains transparent, uniform organic bond；
The preparation of glass powder：Bi is weighed by mass parts2O346.5%, B2O315%, SiO213%, ZnO 7%, Sb2O3
10%, ZrO21.5%, V2O53%, Al2O33%, BaO 0.5%, SrO 0.5%,
It is uniformly mixed with batch mixer, is packed into porcelain crucible, is put into Muffle furnace, in 1000~1100 DEG C, soaking time is
60min, by the glass powder particle after fusing using after ion water quenching, ball milling 2.5h is obtained to grain size through sieve in 0.5~6 μ
The glass binder of m；
Prepare cell aluminum paste：Aluminium powder 75%, glass powder 1%, organic binder 23.5%, additive are weighed by mass parts
0.5%
Using dispersion machine under 600rpm rotating speeds, disperse 50min, then ground 15 times on three-roll grinder, controls grain
Diameter is not more than 15 μm, obtains aluminium paste.
Related preparation process is the same as embodiment 1.
Testing its property data is：Transformation efficiency is 85 DEG C of 18.40%, smooth in appearance, slight aluminium packet, boiling holding 10min
A small amount of bubble.
The silicon solar cell back side aluminium paste produced according to above-described embodiment is improving electrical property and is improving appearance
And equalization point is found between boiling performance.Glass powder process ration is directly added with tradition, by the way that glass is made in glass powder
Slurry mode improves the evenly dispersed situation of glass powder in the slurry, gives full play to glass powder effect, promotes aluminium powder sintering, makes burning
Aluminum membranous layer dense uniform after knot, smooth, no aluminium pill, aluminium bud, water boiling resistance performance are good；Control alusil alloyization reaction, the enhancing back of the body
Field-effect improves transfer efficiency.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of solar cell aluminium paste, it is characterised in that：The composition of the aluminium paste includes by mass percentage：Aluminium powder 70
~80%, organic binder 15~25%, glass paste 2~5%, additive 0.1~3%, wherein each aluminium paste material quality percentage
The sum of content is 100%.
2. a kind of solar cell aluminium paste according to claim 1, it is characterised in that：The aluminium powder is spherical or class ball
The average grain diameter of shape, the aluminium powder is 1~8 μm, and the aluminium powder purity is more than 99.8%.
3. a kind of solar cell aluminium paste according to claim 1, it is characterised in that：The composition of the organic binder is pressed
Mass percent calculates：10~20% high molecular polymers and 80~90% organic solvents；The organic solvent is butyl
At least two in carbitol, terpinol, tributyl citrate, butyl carbitol acetate mix；The polyphosphazene polymer
It is ethyl cellulose and phenolic resin to close object.
4. a kind of solar cell aluminium paste according to claim 1, it is characterised in that：The glass paste be by 20%~
50% glass powder and 50~80% organic bonds composition.
5. a kind of solar cell aluminium paste according to claim 4, it is characterised in that：The composition of the glass powder presses quality
Include by score calculating：Bi2O320~50%, B2O35~15%, SiO210~30%, ZnO 5~10%, Sb2O31~
15%, ZrO20~3%, V2O51~8%, Al2O30.5~5%, BaO 0.1~2%, SrO 0~1%, La2O30~
1%, the grain size D50 of the glass powder is 0.5~6 μm.
6. a kind of solar cell aluminium paste according to claim 1, it is characterised in that：The additive is commercially available dispersion
Machine and/or levelling agent.
7. a kind of a kind of solar cell aluminium paste preparation method as described in claim 1, it is characterised in that：Include the following steps：
(1) 20%~50% glass powder, 50%~80% organic bond are weighed, using dispersion machine under 300~500rpm rotating speeds
Disperse 10~30min；
(2) in three-roll grinder 10~15 times, glass paste used is obtained；
(3) weigh 0.1~3% additive for accounting for raw material gross mass, 15~25% organic binders, 2~5% glass pastes, 70~
80% aluminium powder, using dispersion machine under 300~800rpm rotating speeds, disperse 30~50min, 15 are then ground on three-roll grinder
~20 times, control grain size is no more than 15 μm to get to solar cell aluminium paste.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810167077.6A CN108417290A (en) | 2018-02-28 | 2018-02-28 | A kind of solar cell aluminium paste and preparation method thereof |
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|---|---|---|---|
| CN201810167077.6A CN108417290A (en) | 2018-02-28 | 2018-02-28 | A kind of solar cell aluminium paste and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111153701A (en) * | 2020-01-06 | 2020-05-15 | 哈尔滨理工大学 | ZrB2-SiC composite coating and preparation method thereof |
| CN114068062A (en) * | 2020-07-30 | 2022-02-18 | 一道新能源科技(衢州)有限公司 | Aluminum paste and preparation method thereof |
| CN114763292A (en) * | 2021-01-14 | 2022-07-19 | 东莞华科电子有限公司 | Sintering aid for buffer layer, resistor comprising buffer layer and resistor manufacturing method |
| CN114783651A (en) * | 2022-04-14 | 2022-07-22 | 广州市儒兴科技股份有限公司 | Aluminum paste with good capability of burning through silicon nitride layer and preparation method thereof |
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| CN110504045A (en) * | 2019-08-09 | 2019-11-26 | 江苏国瓷泓源光电科技有限公司 | A kind of crystal silicon solar batteries PERC aluminium paste of high-tensile strength and preparation method thereof |
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| CN114068062A (en) * | 2020-07-30 | 2022-02-18 | 一道新能源科技(衢州)有限公司 | Aluminum paste and preparation method thereof |
| CN114763292A (en) * | 2021-01-14 | 2022-07-19 | 东莞华科电子有限公司 | Sintering aid for buffer layer, resistor comprising buffer layer and resistor manufacturing method |
| CN114763292B (en) * | 2021-01-14 | 2023-09-08 | 东莞华科电子有限公司 | Sintering aid for buffer layer, resistor comprising buffer layer and resistor manufacturing method |
| CN114783651A (en) * | 2022-04-14 | 2022-07-22 | 广州市儒兴科技股份有限公司 | Aluminum paste with good capability of burning through silicon nitride layer and preparation method thereof |
| CN114783651B (en) * | 2022-04-14 | 2024-06-25 | 广州市儒兴科技股份有限公司 | Aluminum paste with good silicon nitride layer burning-through capability and preparation method thereof |
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Application publication date: 20180817 |