CN105810759A - Silver-aluminum paste used for solar cell - Google Patents
Silver-aluminum paste used for solar cell Download PDFInfo
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- CN105810759A CN105810759A CN201610264780.XA CN201610264780A CN105810759A CN 105810759 A CN105810759 A CN 105810759A CN 201610264780 A CN201610264780 A CN 201610264780A CN 105810759 A CN105810759 A CN 105810759A
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- China
- Prior art keywords
- silver
- powder
- aluminum slurry
- glass dust
- slurry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- -1 Silver-aluminum Chemical compound 0.000 title claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 53
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000011521 glass Substances 0.000 claims abstract description 48
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 46
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 35
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 25
- 239000011230 binding agent Substances 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims description 59
- 239000000428 dust Substances 0.000 claims description 35
- 239000004411 aluminium Substances 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 19
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 12
- 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 11
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 11
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 11
- 238000000498 ball milling Methods 0.000 claims description 11
- 239000000787 lecithin Substances 0.000 claims description 11
- 229940067606 lecithin Drugs 0.000 claims description 11
- 235000010445 lecithin Nutrition 0.000 claims description 11
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 239000004952 Polyamide Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 229920002647 polyamide Polymers 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- 229910001631 strontium chloride Inorganic materials 0.000 claims description 7
- XOLBLPGZBRYERU-UHFFFAOYSA-N SnO2 Inorganic materials O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 6
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(III) oxide Inorganic materials O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 5
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 229940116411 terpineol Drugs 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
- 239000001856 Ethyl cellulose Substances 0.000 claims description 4
- 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 4
- 238000003723 Smelting Methods 0.000 claims description 4
- 229920000180 alkyd Polymers 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 229920001249 ethyl cellulose Polymers 0.000 claims description 4
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims 2
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 claims 1
- WUOACPNHFRMFPN-UHFFFAOYSA-N alpha-terpineol Chemical compound CC1=CCC(C(C)(C)O)CC1 WUOACPNHFRMFPN-UHFFFAOYSA-N 0.000 claims 1
- 150000004702 methyl esters Chemical class 0.000 claims 1
- 239000001384 succinic acid Substances 0.000 claims 1
- 229910052709 silver Inorganic materials 0.000 abstract description 11
- 239000004332 silver Substances 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 6
- 101100496858 Mus musculus Colec12 gene Proteins 0.000 abstract 1
- 229910052728 basic metal Inorganic materials 0.000 abstract 1
- 150000003818 basic metals Chemical class 0.000 abstract 1
- 238000005245 sintering Methods 0.000 description 25
- 238000002156 mixing Methods 0.000 description 8
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 7
- 230000005611 electricity Effects 0.000 description 7
- 238000007639 printing Methods 0.000 description 7
- WRYLYDPHFGVWKC-UHFFFAOYSA-N 4-terpineol Chemical compound CC(C)C1(O)CCC(C)=CC1 WRYLYDPHFGVWKC-UHFFFAOYSA-N 0.000 description 6
- 229910052810 boron oxide Inorganic materials 0.000 description 6
- 229910000416 bismuth oxide Inorganic materials 0.000 description 5
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- AHBGXTDRMVNFER-UHFFFAOYSA-L strontium dichloride Chemical compound [Cl-].[Cl-].[Sr+2] AHBGXTDRMVNFER-UHFFFAOYSA-L 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- MUXOBHXGJLMRAB-UHFFFAOYSA-N Dimethyl succinate Chemical compound COC(=O)CCC(=O)OC MUXOBHXGJLMRAB-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- HVCOBJNICQPDBP-UHFFFAOYSA-N 3-[3-[3,5-dihydroxy-6-methyl-4-(3,4,5-trihydroxy-6-methyloxan-2-yl)oxyoxan-2-yl]oxydecanoyloxy]decanoic acid;hydrate Chemical compound O.OC1C(OC(CC(=O)OC(CCCCCCC)CC(O)=O)CCCCCCC)OC(C)C(O)C1OC1C(O)C(O)C(O)C(C)O1 HVCOBJNICQPDBP-UHFFFAOYSA-N 0.000 description 1
- WRYLYDPHFGVWKC-SNVBAGLBSA-N 4-Terpineol Natural products CC(C)[C@]1(O)CCC(C)=CC1 WRYLYDPHFGVWKC-SNVBAGLBSA-N 0.000 description 1
- JZNWSCPGTDBMEW-UHFFFAOYSA-N Glycerophosphorylethanolamin Natural products NCCOP(O)(=O)OCC(O)CO JZNWSCPGTDBMEW-UHFFFAOYSA-N 0.000 description 1
- 229930186217 Glycolipid Natural products 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- OEYIOHPDSNJKLS-UHFFFAOYSA-N choline Chemical compound C[N+](C)(C)CCO OEYIOHPDSNJKLS-UHFFFAOYSA-N 0.000 description 1
- 229960001231 choline Drugs 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 210000002969 egg yolk Anatomy 0.000 description 1
- 239000002305 electric material Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- WTJKGGKOPKCXLL-RRHRGVEJSA-N phosphatidylcholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCCCCCCC=CCCCCCCCC WTJKGGKOPKCXLL-RRHRGVEJSA-N 0.000 description 1
- 150000008104 phosphatidylethanolamines Chemical class 0.000 description 1
- 229940067626 phosphatidylinositols Drugs 0.000 description 1
- 150000003905 phosphatidylinositols Chemical class 0.000 description 1
- 150000003904 phospholipids Chemical class 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- UFTFJSFQGQCHQW-UHFFFAOYSA-N triformin Chemical compound O=COCC(OC=O)COC=O UFTFJSFQGQCHQW-UHFFFAOYSA-N 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 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
-
- 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)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dispersion Chemistry (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Inorganic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Conductive Materials (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses silver-aluminum paste. The silver-aluminum paste comprises the following components based on weight percentage: 60-85% of conductive metal powder, 2-10% of graphene, 6-18% of glass powder, 9-20% of organic binder, and 1-3% of auxiliary material; the total weight percentage is 100%; the conductive metal powder is silver powder or aluminum powder at the weight ratio of 6:2 to 3:5; and the glass powder comprises the following components: 3-17% of SiO<2>, 1-2% of TiO<2>, 35-52% of Bi<2>O<3>, 4-8% of Al<2>O<3>, 1-7% of SrCl<2>, 15-38% of B<2>O<3>, 2-5% of SnO<2>, and 0.1-2% of CaO, and the total percentage is 100%. The silver-aluminum paste provided by the invention comprises the silver powder and the aluminum powder used as the basic metal components; the applied aluminum and silver are jointly used as the conducive metal powder; a part of the silver powder is replaced by the aluminum powder, so that the cost of the conductive paste is highly lowered; and meanwhile, the graphene is added to the silver-aluminum paste, so that the conductive performance of the sintered silver-aluminum paste is improved.
Description
Technical field
The present invention relates to semi-conducting material, particularly to one silver used for solar batteries aluminum slurry, be that a kind of electrode is special
Conductive material, belongs to electronic applications, conductive material field.
Background technology
Solaode is the semiconductor device converted solar energy into electrical energy.Solaode is a kind of emerging green
The energy, it is possible to effectively utilize solar energy to replace traditional energy, reduce the discharge of carbon dioxide, conservation of nature environment, it is achieved can
Sustainable development.
In the processing preparation process of existing solaode, it is necessary to the front and back at cell panel introduces electrode, often
Electrode material be silver paste, silver aluminum slurry and aluminum slurry.Silver paste has and conducts electricity very well, the spy that adaptability is stronger
Point, but it is as the development of electronic applications, the consumption of silver paste is increasing.Silver itself is as precious metal material, and price is especially
Along with the market quotation significantly increases, the silver slurry price directly resulting in electronic applications use increases year by year.
Although, prior art also has part use the producer that silver aluminium paste and aluminium paste replace, but the resistance of aluminium paste is relative
Higher, then there is mixing homogeneity control difficulty greatly in the silver-colored aluminium paste as middle transition, electric conductivity is difficult to reach intended
Problem.
Summary of the invention
It is an object of the invention to overcome the silver paste price in the presence of prior art high, and succedaneum exists electric conductivity
Can, the in-problem deficiency such as adhesion, it is provided that a kind of silver aluminum slurry.The silver-colored aluminum slurry used for solar batteries of the present invention has
Mixing uniformity is good, and electric conductivity highlights, and is combined firm feature with substrate.
In order to realize foregoing invention purpose, the invention provides techniques below scheme:
A kind of silver aluminum slurry, including the following component of percentage by weight: conducting metal powder 60-85%, Graphene 2-
10%, glass dust 6-18%, organic binder bond 9-20%, auxiliary agent 1-3%, amount to 100%.
Described conducting metal powder be the part by weight of argentum powder and aluminium powder, argentum powder and aluminium powder be 6:2-3:5.
Described glass dust comprises following component composition: SiO23-17%, TiO21-2%, Bi2O335-52%, Al2O34-
8%, SrCl21-7%, B2O315-38%, SnO22～5%, CaO 0.1～2%, amounts to 100%.
First, cause metal ingredient based on the silver-colored aluminum slurry of the present invention contains argentum powder and aluminium powder, wherein apply
Aluminum and silver collectively as conducting metal powder, owing to aluminium powder instead of the argentum powder of part, so the cost of electrocondution slurry obtains
Well reduce.Then, the silver-colored aluminum slurry of the present invention adds appropriate Graphene, permissible the when that Graphene being used alone
Use as conductive material, and show the conductive capability of Graphene even than ordinary metallic material more according to research reliably
By force, the electric conductivity after Graphene in the slurry can promote slurry sintering is therefore mixed.Meanwhile, what is more important graphite
Alkene is made up of carbon, and the aluminium powder in slurry can play during sintering reduction protection effect, reduces sintering
During aluminium powder oxidation generate aluminium sesquioxide ratio, meanwhile, reduction aluminium powder surface aluminium oxide, reduce sintering after electricity
Boundary layer in extremely, improves the electric conductivity of electrode.
Secondly, the glass frit component of the present invention has selected lead-free glass powder, and it becomes component selections and ratio application through especially
Meticulously adjust, use bismuth oxide and boron oxide as the partial substitute of silicon dioxide, make with silicon oxide, bismuth oxide and boron oxide
Main body for glass basis phase.Owing to bismuth oxide and boron oxide have good concertedness, after Substitute For Partial silicon dioxide
The agent structure of the glass dust basis phase formed, has more preferable stability and fusing feature, it is possible to play more in sintering process
More preferably, bonding that more can be stable thereon, is protected for good cementation, the electrode of sintering curing and the new of solar base plate and degree
The stability of card electrode and durability.The particularly usage ratio of bismuth oxide and boron oxide controls when close to about 2:1, collaborative
Property optimal, easy sinterability and the caking property of silver aluminum slurry are optimal.After strontium chloride adds, it is possible to cooperatively form collaborative work with boron oxide
With, reduce sintering temperature.The application of strontium chloride has harmful effect for structural stability and the wearability of glass dust, unsuitable excess
Use.The present invention is by component each in glass dust and the selection of consumption proportion thereof, and each components matching ratio is suitable so that use
The conductive silver paste that this glass dust prepares has environmental friendliness, sintering character is excellent, electric conductivity is excellent.
Further, the weight percentage of described glass dust is 7-18%, optimizes the consumption of glass dust, adjusts electricity after sintering
The accounting of middle glass phase, it is ensured that the bonding stability of conductive electrode is preferable, simultaneously because of glass phase in conductive electrode
The resistance caused raises and controls in relatively low scope, it is ensured that electrode electric conductivity in solar cells.Preferably glass
The content of powder is 10-17%, and caking property and electric conductivity after glass dust sintering are all preferable in this range, particularly and solar energy
The combination great efforts of cell basis layer.For more specifically, described glass dust weight percentage can be 11%, 13%,
14%, the concrete number such as 16%.
Further, the weight percentage of described organic binder bond is 10-19%, selects suitable organic binder bond, can
More preferable with the pattern that control electrode prints during silk screen printing, close to preferable electrode shape after sintering, for promoting
The electricity conversion of solaode has certain help.It is preferably 12-18%, in this range organic binder bond
The basic role played is optimal, and printing effect is best, and after sintering, after organic binder bond carbonization, residue is less, for electrode
The impact of electric conductivity is little.For more specifically, described organic binder bond weight percentage can be 12%, 14%,
16% concrete number such as grade.
Further, described organic binder bond comprise following component composition: rosin resin 10-20%, ethyl cellulose 10-
25%, butyl carbitol 5-10%, isophthalic alkyd resin 5-10%, dimethyl succinate 10-20%, terpineol 20-
40%, amount to 100%.The composition that the organic binder bond of the present invention is selected have employed rosin resin, ethyl cellulose, easily simultaneously
It is uniformly dispersed with argentum powder, does not reunites, it is possible to well ensure the printing uniformity and the THICKNESS CONTROL of electrode, and protect sintering shape
Looks.The butyl carbitol selected and terpineol have mobility and the effect of stability ensureing silver aluminum slurry, it can be ensured that silver
Aluminum slurry is character more stable and consistent during storing, it is to avoid the window of silver aluminum slurry printing is narrow causes processing difficulties.Its
The isophthalic alkyd resin of middle selection and Petropols are the compositions of auxiliary printing rear electrode preboarding, and it coordinates butyl card
Must alcohol and when terpineol, be mutually dissolved good dispersion, and argentum powder, glass dust can be formed relatively after phased soln dispersion mutually
Good package structure, i.e. argentum powder distributing homogeneity wherein, free-running property is the most prominent, more conducively the printing molding of electrode.
Meanwhile, finely dispersed terpineol and Petropols can react the specific consolidated structures of formation sintering when so that electricity
Pole in use form is relatively reliable stable.
Further, organic binder bond also comprises the lecithin of 10-20%.Lecithin is applied in silver aluminum slurry belong to first
Secondary trial, lecithin is present in the filemot oil material of a group among animal vegetable tissue and yolk, and it is constituted into
Divide and include that phosphoric acid, choline, fatty acid, glycerol, glycolipid, triglyceride and phospholipid are (such as phosphatidylcholine, PHOSPHATIDYL ETHANOLAMINE
And phosphatidylinositols).Inventor finds, after lecithin and silver aluminum slurry mixing, can combine with silver powder particulate component, it is achieved
Peptizaiton for silver powder granule, it is often more important that lecithin can also interact with Graphene, exists at lecithin
In the case of, graphene dispersion is more uniform, and the electric conductivity increase for electrode has great importance.At lecithin and stone
The construction features that ink alkene is unique, sintering curing when, it is possible to be combined with each other reaction, it is achieved unique attachment structure, strengthens
The Performance Strength of electrode.
Further, described auxiliary agent is polyamide wax.Polyamide wax is a kind of thixotropy additive, is formed in silver aluminum slurry
Powerful network structure, the thixotropic property of its excellence, there is the resist sagging ability of excellence, anti-settling ability, it is possible to keep slurry
Storage stability, prevent the slurry layering problem such as wash rice liquid from occurring.Can preferably control electrode during screen printing electrode
Pattern, improve electrode sintering before structural stability.Preferred promoter consumption is 1-1.4%.
A kind of method preparing above-mentioned silver aluminum slurry, comprises the following steps:
Step (1) prepares glass dust
Taking glass dust raw material mix homogeneously in proportion, put in crucible, smelting temperature is 1100-1250 DEG C, and melting 1-2 is little
Time；After melting completes, water smoke quenching, ball milling, obtain the glass dust that particle diameter is not more than 5 microns after drying.
Step (2) prepares premixed solution
Weigh raw material in proportion, other composition beyond rosin resin is mixed, is heated to 80-110 DEG C, stir 0.5-2
Hour, mix homogeneously, obtain premixed solution.
Step (3) preparation silver aluminum slurry
Premixed solution prepared by step 2, insulation, add argentum powder, aluminium powder, glass dust and Graphene, be uniformly mixed,
It is eventually adding rosin resin and polyamide wax, grinds 10-60 minute with three-high mill, prepare conductive silver aluminum slurry.
Compared with prior art, beneficial effects of the present invention:
1. cause metal ingredient based on the silver-colored aluminum slurry of the present invention containing argentum powder and aluminium powder, the aluminum wherein applied
With silver collectively as conducting metal powder, owing to aluminium powder instead of the argentum powder of part, so the cost of electrocondution slurry obtains very well
Reduction.
2. the silver-colored aluminum slurry of the present invention adds appropriate Graphene, can be as leading the when that Graphene being used alone
Electric material uses, and shows that the conductive capability of Graphene is even higher than ordinary metallic material, therefore according to research reliably
Mixing Graphene in the slurry can promote the electric conductivity after slurry sintering.
3. the Graphene of the present invention is made up of carbon, can play the aluminium powder in slurry during sintering
Reduction protection effect, the aluminium oxide on reduction aluminium powder surface, reduces the boundary layer in the electrode after sintering, improves the electric conductivity of electrode
Energy.
4. the glass frit component mixing ratio of the present invention is suitable, uses silicon oxide, bismuth oxide and boron oxide as glass dust
The bulk composition of basis phase, reduces sintering temperature, has excellent sintering character, meanwhile, with the affinity of organic adhesive
Good, more preferably, bonding that more can be stable is thereon for the electrode of sintering curing and the new of solar base plate and degree, it is ensured that electrode steady
Qualitative and durability.
Detailed description of the invention
The present invention additionally provides a kind of method preparing above-mentioned silver aluminum slurry simultaneously, comprises the following steps:
Step (1) prepares glass dust
Take following raw material: SiO in proportion23-17%, TiO21-2%, Bi2O335-52%, Al2O34-8%,
SrCl21-7%, B2O315-38%, SnO22～5%, CaO 0.1～2%, amounts to 100%.Mix homogeneously, puts into crucible
In, smelting temperature is 1100-1250 DEG C, melting 1-2 hour.After melting completes, water smoke quenching, ball milling, obtain particle diameter after drying
It is not more than the glass dust of 5 microns.
Step (2) prepares premixed solution
Weigh raw material in proportion, other composition beyond rosin resin is mixed, is heated to 80-110 DEG C, stir 0.5-2
Hour, preferably 1-1.5 hour, mix homogeneously, obtain premixed solution.
Step (3) preparation silver aluminum slurry
Premixed solution prepared by step 2, insulation, add argentum powder, aluminium powder, glass dust and Graphene, be uniformly mixed,
It is eventually adding rosin resin and polyamide wax, grinds 10-60 minute with three-high mill, prepare conductive silver aluminum slurry.
Further, step 1 use planetary ball mill carry out ball milling processing when of ball milling.The preferably ball milling course of processing
In, ethanol solution is protected.Use Alcohol Protection ball milling, there is ball milling speed fast, the advantage that ball milling quality is high.Further,
The zirconium oxide bead using a diameter of 3-15mm carries out ball milling.Hardness is suitable, and grinding efficiency is high, and ball mill pulverizing granularity is tiny.
Further, when preferred step 2 prepares premixed solution, during heated and stirred mixing, when temperature is increased to 70
Time more than DEG C, nitrogen atmosphere is used to be protected by.
Further, in step 3, the when of adding argentum powder, aluminium powder, glass dust and Graphene, it is sequentially added in the following order:
Glass dust, argentum powder, aluminium powder, Graphene.After often adding a component, stir and within 5-20 minute, add next component.
Below in conjunction with test example and detailed description of the invention, the present invention is described in further detail.But this should not understood
Scope for the above-mentioned theme of the present invention is only limitted to below example, and all technology realized based on present invention belong to this
The scope of invention.Percentage ratio not specified in the present invention is all weight percentage.
Embodiment 1-5
Prepare glass dust
Take following raw material: SiO in proportion23-17%, TiO21-2%, Bi2O335-52%, Al2O34-8%,
SrCl21-7%, B2O315-38%, SnO22～5%, CaO 0.1～2%, amounts to 100%.Mix homogeneously, puts into crucible
In, smelting temperature is 1100-1250 DEG C, melting 1-2 hour.After melting completes, water smoke quenching, ball milling, obtain particle diameter after drying
It is not more than the glass dust of 5 microns.The material rate of specific embodiment 1-5 see table.
Table 1 glass dust material composition ratio
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| SiO2 | 4.3 | 11.9 | 10.4 | 12.7 | 16.9 |
| TiO2 | 1.3 | 1.3 | 1.1 | 1.4 | 1.9 |
| Bi2O3 | 38.9 | 51.8 | 47.4 | 36.1 | 43.6 |
| Al2O3 | 4.1 | 4.8 | 6.2 | 5.2 | 7.1 |
| SrCl2 | 7.0 | 1.2 | 4.3 | 2.2 | 4.6 |
| B2O3 | 39.4 | 24.6 | 27.2 | 37.9 | 22.3 |
| SnO2 | 4.1 | 4.2 | 2.9 | 3.2 | 3.3 |
| CaO | 1.0 | 0.1 | 0.4 | 1.3 | 0.4 |
Embodiment 6-13
Preparation conductive silver aluminum slurry
Raw material is taken in table 2 ratio.Just other composition mixing beyond rosin resin, is heated to 80-110 DEG C, stirring
0.5-2 hour, preferably 1-1.5 hour, mix homogeneously, obtain premixed solution.Premixed solution is incubated, adds argentum powder, aluminium powder, glass
Glass powder and Graphene, be uniformly mixed, and is eventually adding rosin resin and polyamide wax, grinds 10-60 minute with three-high mill,
Prepare conductive silver aluminum slurry.The material rate of specific embodiment 6-13 see table.Prepared by embodiment 6-7 Application Example 1
Glass dust, embodiment 8-9 Application Example 2 preparation glass dust, embodiment 10-13 Application Example 5 preparation glass dust.
Table 2 conductive silver aluminum slurry component ratio
| Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 | Embodiment 11 | Embodiment 12 | Embodiment 13 | |
| Argentum powder | 35.7 | 43.0 | 41.4 | 43.9 | 41.3 | 47.6 | 38.2 | 28.5 |
| Aluminium powder | 32.3 | 17.0 | 35.6 | 20.1 | 26.7 | 23.4 | 34.8 | 41.5 |
| Graphene | 7.0 | 5.0 | 8.0 | 7.0 | 5.0 | 4.0 | 5.0 | |
| Glass dust | 12.0 | 14.0 | 6.0 | 14.0 | 10.0 | 12.0 | 9.0 | 10.0 |
| Rosin resin | 2.9 | 3.4 | 1.3 | 1.3 | 2.4 | 1.7 | 2.1 | 2.2 |
| Ethyl cellulose | 3.8 | 3.8 | 1.9 | 2.9 | 3.2 | 2.4 | 1.3 | 2.6 |
| Butyl carbitol | 1.4 | 1.6 | 0.7 | 1.1 | 0.7 | 0.7 | 0.8 | 0.9 |
| Isophthalic alkyd resin | 1.4 | 1.4 | 0.6 | 0.8 | 1.1 | 0.9 | 1.0 | 0.8 |
| Dimethyl succinate | 3.1 | 2.7 | 1.7 | 1.3 | 1.7 | 1.9 | 1.8 | 1.4 |
| Terpineol | 5.4 | 5.0 | 3.8 | 4.6 | 4.9 | 2.4 | 3.1 | 5.1 |
| Auxiliary agent | 2.0 | 1.0 | 2.0 | 2.0 | 1.0 | 1.0 | 2.0 | 1.0 |
| Lecithin | 1.0 | 2.0 | 1.0 |
Test case
Above-described embodiment 6-13 is prepared silver aluminum slurry uses the technique of printed network printing to print the electrode of sunny energy battery,
The resistance of test electrode, pulling force, softening temperature, result is as shown in the table.
Table 3 test result
| Resistance (string resistance) | Pulling force | Softening temperature (DEG C) | |
| Embodiment 6 | 0.045 | 1.7 | 494 |
| Embodiment 7 | 0.032 | 2.5 | 505 |
| Embodiment 8 | 0.029 | 3.4 | 510 |
| Embodiment 9 | 0.031 | 2.9 | 476 |
| Embodiment 10 | 0.033 | 2.4 | 481 |
| Embodiment 11 | 0.024 | 2.8 | 479 |
| Embodiment 12 | 0.027 | 2.9 | 484 |
| Embodiment 13 | 0.024 | 3.2 | 482 |
From through test result, it is good that the conductive silver aluminum slurry of the present invention has conductive characteristic, and stretching resistance is relatively strong, burns
The feature that junction temperature is low, as can be good at ensureing the resistance control of inside solar energy battery after the electrode print of solaode
Make in extremely low level, be conducive to improving the electricity conversion of solaode, improve the utilization rate of solar energy.
The above results shows, Graphene in the slurry can promote the electric conductivity after slurry sintering, embodiment 11-13
Result show, when in slurry simultaneously add application Graphene and lecithin after, the mixing ratio of various components is suitable, it is possible to more
Adding the resistance characteristic effectively reducing electrode, the ohmmeter after electrode sintering curing reveals extremely low level, for improving the sun
The optical energy utilization efficiency of energy battery has great importance.And, the silver-colored aluminium paste formula in embodiment 11-13 can also provide relatively
Good stretching resistance performance, it is ensured that after electrode is made in silver aluminum slurry printing, it is possible to good holding electrode during life-time service
With the adhesion of solar cell substrate, prevent the damage that external force causes, improve the service life of solaode.
Finally, additionally by the contrast to softening temperature, it appeared that the overall softening temperature of the silver-colored aluminum slurry of the present invention
The most relatively low, the when of application silver aluminum slurry, it is possible in more preferable minimizing electrode sintering process, high temperature is for the damage of solaode
Wound, improves the electricity conversion of solaode.Particularly in the embodiment after coordination optimization, Graphene and lecithin play
Chemiluminescence, the properties of silver aluminum slurry all has greatly improved or promotes, and has important actual application value.
Claims (10)
1. a silver-colored aluminum slurry, including the following component of percentage by weight: conducting metal powder 60-85%, Graphene 2-10%, glass
Glass powder 6-18%, organic binder bond 9-20%, auxiliary agent 1-3%, amount to 100%；
Described conducting metal powder be the part by weight of argentum powder and aluminium powder, argentum powder and aluminium powder be 6:2-3:5；
Described glass dust comprises following component composition: SiO23-17%, TiO21-2%, Bi2O335-52%, Al2O34-8%,
SrCl21-7%, B2O315-38%, SnO22～5%, CaO 0.1～2%, amounts to 100%.
2. the most silver-colored aluminum slurry, it is characterised in that the weight percentage of described glass dust is 7-18%.
3. the most silver-colored aluminum slurry, it is characterised in that the weight percentage of described glass dust is 10-17%.
4. the most silver-colored aluminum slurry, it is characterised in that the weight percentage of organic binder bond is 10-19%.
5. the most silver-colored aluminum slurry, it is characterised in that the weight percentage of organic binder bond is 12-18%.
6. the most silver-colored aluminum slurry, it is characterised in that described organic binder bond comprises following component and forms: Colophonium
Resin 10-20%, ethyl cellulose 10-25%, butyl carbitol 5-10%, isophthalic alkyd resin 5-10%, succinic acid two
Methyl ester 10-20%, terpineol 20-40%, amount to 100%.
7. the most silver-colored aluminum slurry, it is characterised in that also comprise the lecithin of 10-20% in organic binder bond.
8. the most silver-colored aluminum slurry, it is characterised in that described auxiliary agent is polyamide wax.
9. the most silver-colored aluminum slurry, it is characterised in that auxiliary dosage is 1-1.4%.
10. the method preparing above-mentioned silver aluminum slurry, comprises the following steps:
Step (1) prepares glass dust
Taking glass dust raw material, mix homogeneously in proportion, put in crucible, smelting temperature is 1100-1250 DEG C, melting 1-2 hour；
After melting completes, water smoke quenching, ball milling, obtain the glass dust that particle diameter is not more than 5 microns after drying；
Step (2) prepares premixed solution
Weigh raw material in proportion, other composition beyond rosin resin mixed, is heated to 80-110 DEG C, stirs 0.5-2 hour,
Mix homogeneously, obtains premixed solution；
Step (3) preparation silver aluminum slurry
Premixed solution prepared by step 2, insulation, add argentum powder, aluminium powder, glass dust and Graphene, be uniformly mixed, finally
Add rosin resin and polyamide wax, grind 10-60 minute with three-high mill, prepare conductive silver aluminum slurry.
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