CN106653148A - Back electrode silver paste for crystalline silicon solar cell and preparation method of back electrode silver paste - Google Patents
Back electrode silver paste for crystalline silicon solar cell and preparation method of back electrode silver paste Download PDFInfo
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- CN106653148A CN106653148A CN201611164704.8A CN201611164704A CN106653148A CN 106653148 A CN106653148 A CN 106653148A CN 201611164704 A CN201611164704 A CN 201611164704A CN 106653148 A CN106653148 A CN 106653148A
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 135
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 52
- 239000004332 silver Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 229910021419 crystalline silicon Inorganic materials 0.000 title abstract 3
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 37
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000000843 powder Substances 0.000 claims abstract description 29
- 239000011521 glass Substances 0.000 claims abstract description 28
- 239000002245 particle Substances 0.000 claims abstract description 24
- 239000006259 organic additive Substances 0.000 claims abstract description 16
- 239000003960 organic solvent Substances 0.000 claims description 39
- 239000011347 resin Substances 0.000 claims description 34
- 229920005989 resin Polymers 0.000 claims description 34
- 229910052710 silicon Inorganic materials 0.000 claims description 31
- 239000010703 silicon Substances 0.000 claims description 31
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 30
- 239000013078 crystal Substances 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 20
- 239000002002 slurry Substances 0.000 claims description 14
- WUOACPNHFRMFPN-SECBINFHSA-N (S)-(-)-alpha-terpineol Chemical group CC1=CC[C@@H](C(C)(C)O)CC1 WUOACPNHFRMFPN-SECBINFHSA-N 0.000 claims description 12
- 239000001856 Ethyl cellulose Substances 0.000 claims description 12
- 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 12
- OVKDFILSBMEKLT-UHFFFAOYSA-N alpha-Terpineol Natural products CC(=C)C1(O)CCC(C)=CC1 OVKDFILSBMEKLT-UHFFFAOYSA-N 0.000 claims description 12
- 229940088601 alpha-terpineol Drugs 0.000 claims description 12
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 12
- 229920001249 ethyl cellulose Polymers 0.000 claims description 12
- 238000000227 grinding Methods 0.000 claims description 11
- 235000011837 pasties Nutrition 0.000 claims description 11
- 239000004014 plasticizer Substances 0.000 claims description 11
- 238000010792 warming Methods 0.000 claims description 11
- 239000004094 surface-active agent Substances 0.000 claims description 9
- 239000013008 thixotropic agent Substances 0.000 claims description 8
- 239000000080 wetting agent Substances 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims 1
- 229910052796 boron Inorganic materials 0.000 claims 1
- 239000001913 cellulose Substances 0.000 claims 1
- 229920002678 cellulose Polymers 0.000 claims 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 description 20
- 238000002156 mixing Methods 0.000 description 8
- 230000009466 transformation Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- -1 carbon nano tube compound Chemical class 0.000 description 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Natural products OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010946 fine silver Substances 0.000 description 2
- 229940074391 gallic acid Drugs 0.000 description 2
- 235000004515 gallic acid Nutrition 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 229910000464 lead oxide Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- WUOACPNHFRMFPN-VIFPVBQESA-N (R)-(+)-alpha-terpineol Chemical compound CC1=CC[C@H](C(C)(C)O)CC1 WUOACPNHFRMFPN-VIFPVBQESA-N 0.000 description 1
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical compound CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 241000251468 Actinopterygii Species 0.000 description 1
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 229910000896 Manganin Inorganic materials 0.000 description 1
- IEBJZLRZRKTGFN-UHFFFAOYSA-N N=NC=NN.N=NC=NN.C1=CC=CC=C1 Chemical class N=NC=NN.N=NC=NN.C1=CC=CC=C1 IEBJZLRZRKTGFN-UHFFFAOYSA-N 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000787 lecithin Substances 0.000 description 1
- 235000010445 lecithin Nutrition 0.000 description 1
- 229940067606 lecithin Drugs 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000007613 slurry method Methods 0.000 description 1
- 108700024661 strong silver Proteins 0.000 description 1
- 150000005846 sugar alcohols 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
- H01B1/20—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
-
- 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
Abstract
The invention relates to back electrode silver paste for a crystalline silicon solar cell and a preparation method of the back electrode silver paste. The back electrode silver paste for the crystalline silicon solar cell is prepared from the following components in parts by weight: 25-35 parts of superfine spherical silver powder, 15-25 parts of flake silver powder, 2-6 parts of inorganic glass powder, 0.5-1 part of nano lanthanum hexaboride, 34-52 parts of organic carrier and 1-10 parts of organic additive. By adopting the combination of the superfine spherical silver powder and the flake silver powder, a gap between layers of the flake silver powder is filled with superfine silver powder particles, so that the conductivity of the silver paste is improved. The nano lanthanum hexaboride is added, so that the series resistance of a silver film can be reduced when the nano lanthanum hexaboride is used for the electrode silver paste, and the photoelectric conversion efficiency of the solar cell is greatly improved and can reach 18.88%.
Description
Technical field
The present invention relates to a kind of electrode of solar battery material, more particularly to a kind of crystal silicon solar batteries back electrode silver
Slurry and preparation method thereof.
Background technology
Solar energy is inexhaustible, the nexhaustible renewable new energy of the mankind, is also clean energy resource, is not produced any
Environmental pollution.Therefore, solar energy is considered as 21 century most important new forms of energy.Increasing country comes into effect " sunlight
Plan ", develops solar energy resources, seeks the new power of economic development.Under the promotion of international photovoltaic market great potential, various countries
Solar cell manufacturing industry fall over each other put into huge fund, expanding production, to strive one seat.
At present China's solar cell yield, more than 20GW, is the first big producing country of world's solar cell.However,
The key equipment of China's solar cell, particularly raw material heavy dependence import, the electrode silver plasm of crystal silicon solar energy battery
Adopt import silver paste mostly, such as Dupont, the magnitude of Korea three, seriously constrain the benign development of China's photovoltaic industry.Crystal
Silicon solar back electrode silver paste is the important component part of solar battery sheet, can form silverskin in rear surface of solar cell,
Couple together with front electrode, play the collection of electric current, the effect of confluxing.
Chinese patent CN 102368391B disclose a kind of high conductivity lead-free silver slurry for crystal-silicon solar cell,
The component of the lead-free silver slurry and the percentage by weight of each component are:Conductive silver powder 75%, glass glue 3%-5% is inorganic
Additive 3%-5%, organic carrier 15%-19%, the conductive silver powder is the mixed-powder of micro-silver powder and nano-silver powder.Should
If invention is mixed with the low-melting-point nano silver of dry content, the sintering temperature that compensate for being caused because of the restriction use of lead oxide is too high
Defect；Additionally, matching somebody with somebody by micro-silver powder optimization level, and the lead oxide of poorly conductive is instead of with Nano Silver, can shape after sintering
The extremely strong silver electrode of poling high conductivity, low ohm contact and adhesive force, can be effectively reduced crystal silicon solar energy battery
Series resistance, so as to improve the photoelectric transformation efficiency of crystal silicon solar energy battery.
The A of Chinese patent CN 105655005 disclose a kind of crystal silicon solar energy battery electrode silver plasm, according to weight portion
Number meter, silver paste raw material is consisted of：40～60 parts of silver powder, 5～10 parts of antimony powder, 10～20 parts of manganin powder, LiFePO4/
1～5 part of carbon nano tube compound material, 1～8 part of glass dust, 0.5～2 part of silane coupler, 8～10 parts of propylene glycol monobutyl ether, pine
1～5 part of fuel-economizing, 1～3 part of lecithin, 0.1～0.5 part of ethyl cellulose, 0.25～1 part of aerosil.The invention gained
Electrode silver plasm it is not leaded, comply fully with environmental requirement, be applied to the production of solar cell, can be in solar cell surface shape
Into adhesive force is strong, cell photoelectric high conversion efficiency.
The content of the invention
The technical problem to be solved is to provide one kind and can reduce silverskin series resistance, so as to improve solar-electricity
The crystal silicon solar batteries back electrode silver paste of pond photoelectric transformation efficiency, present invention also offers a kind of system of the electrode silver plasm
Preparation Method.
To solve above-mentioned technical problem, the technical scheme is that：
A kind of crystal silicon solar batteries back electrode silver paste, counts be made up of following components by weight：Superfine spherical silver
25～35 parts of powder, 15～25 parts of flake silver powder, 2～6 parts of unorganic glass powder, 0.5～1 part of nanometer lanthanum hexaboride, organic carrier 34
～52 parts, 1～10 part of organic additive.
Preferably, the organic additive is one or more in plasticizer, thixotropic agent, surfactant, wetting agent
Combination.Described thixotropic agent such as organobentonite, rilanit special, polyamide wax etc..Described plasticizer such as benzene diformazan
Esters of gallic acid, aliphatic dibasic acid ester, phosphoric acid ester.The many esters of gallic acid of polyalcohol esters, benzene, citric acid ester type etc..
Described organic carrier belongs to feature disclosed in prior art, see Chinese patent CN 102368391B, China
A of patent CN 104485155 etc..Superfine spherical silver powder, flake silver powder, unorganic glass powder, nanometer lanthanum hexaboride can pass through market
Buy and obtain.
The general particle diameter of superfine spherical silver powder of the present invention is less than 0.6 μm, and its specific surface area is big, so as to improve electrode silver plasm
Conductive capability.Superfine spherical silver powder is compared, flake silver powder particulate can form contact of the face with face, therefore after high temperature sintering, piece
Shape particulate is mutually overlapped in certain thickness in fish scale-shaped, so as to show more preferable electric conductivity.Superfine spherical silver powder with
Flake silver powder can improve conductive energy by reasonably combined, the particles filled flake silver powder of super fine silver powder gap between layers
Power.
The nanometer lanthanum hexaboride of the present invention is a kind of excellent metallic conductor, can be reduced when being applied to electrode silver plasm
Silverskin series resistance, greatly improves the photoelectric transformation efficiency of solar cell, may be up to 18.88%.
Preferably, described superfine spherical silver powder particle diameter is 0.2～0.6 μm.
Preferably, described nanometer lanthanum hexaboride particle diameter is 1～100nm.
Preferably, described organic carrier is dissolved in organic solvent by organic resin and is obtained, described organic solvent be α-
Terpinol, described organic resin is ethyl cellulose, and organic solvent is 5～10 with the weight ratio of organic resin：1.
Preferably, count by weight and be made up of following components：30 parts of superfine spherical silver powder, 20 parts of flake silver powder is inorganic
5 parts of glass dust, 0.8 part of nanometer lanthanum hexaboride, 40 parts of organic carrier, 5 parts of organic additive.
A kind of preparation method of the crystal silicon solar batteries back electrode silver paste, comprises the steps：
(1) organic carrier is prepared：Organic solvent is added in container, stirring is warming up to 80～100 DEG C, add organic tree
Fat, insulated and stirred 2～3 hours, to being completely dissolved, is filtrated to get organic carrier；
(2) slurry is prepared：By superfine spherical silver powder, flake silver powder, unorganic glass powder, nanometer lanthanum hexaboride, organic carrier
With organic additive mixing, pasty state is stirred into mixer, the grinding of Jing three-roll grinders reaches fineness requirement, that is, obtains crystal silicon too
Positive energy cell backside electrode silver plasm.
Preferably, described organic solvent is alpha-terpineol, and described organic resin is ethyl cellulose, organic solvent with
The weight ratio of organic resin is 5～10：1.
The present invention is due to the combination using superfine spherical silver powder and flake silver powder, the particles filled flake silver powder layer of super fine silver powder
Gap between layer, improves the conductive capability of silver paste.Present invention adds a kind of nanometer lanthanum hexaboride, it is applied to electrode
Silverskin series resistance can be reduced during silver paste, the photoelectric transformation efficiency of solar cell is greatly improved, 18.88% is may be up to.
Specific embodiment
With reference to specific embodiment, the invention will be further described, but protection scope of the present invention is not limited to
This.
Embodiment 1
(1) organic carrier is prepared：Organic solvent is added in container, stirring is warming up to 80 DEG C, add organic resin, insulation
Stirring 3 hours, to being completely dissolved, is filtrated to get organic carrier；Described organic solvent be alpha-terpineol, described organic resin
For ethyl cellulose, organic solvent is 8 with the weight ratio of organic resin：1.
(2) slurry is prepared：By superfine spherical silver powder, flake silver powder, unorganic glass powder, nanometer lanthanum hexaboride, organic carrier
With organic additive mixing, pasty state is stirred into mixer, the grinding of Jing three-roll grinders reaches fineness requirement, that is, obtains crystal silicon too
Positive energy cell backside electrode silver plasm.
Count by weight, the consumption of each component is：30 parts of superfine spherical silver powder, 20 parts of flake silver powder, unorganic glass powder 5
Part, 0.8 part of nanometer lanthanum hexaboride, 40 parts of organic carrier, 3 parts of plasticizer, 2 parts of surfactant.Described superfine spherical silver powder
Particle diameter is 0.2～0.6 μm.Described nanometer lanthanum hexaboride particle diameter is 1～100nm.
Embodiment 2
(1) organic carrier is prepared：Organic solvent is added in container, stirring is warming up to 90 DEG C, add organic resin, insulation
Stirring 2 hours, to being completely dissolved, is filtrated to get organic carrier；Described organic solvent be alpha-terpineol, described organic resin
For ethyl cellulose, organic solvent is 5 with the weight ratio of organic resin：1.
(2) slurry is prepared：By superfine spherical silver powder, flake silver powder, unorganic glass powder, nanometer lanthanum hexaboride, organic carrier
With organic additive mixing, pasty state is stirred into mixer, the grinding of Jing three-roll grinders reaches fineness requirement, that is, obtains crystal silicon too
Positive energy cell backside electrode silver plasm.
Count by weight, the consumption of each component is：35 parts of superfine spherical silver powder, 15 parts of flake silver powder, unorganic glass powder 5
Part, 0.8 part of nanometer lanthanum hexaboride, 35 parts of organic carrier, 2 parts of plasticizer, 0.5 part of thixotropic agent, 0.5 part of wetting agent, surface-active
2 parts of agent.Described superfine spherical silver powder particle diameter is 0.2～0.6 μm.Described nanometer lanthanum hexaboride particle diameter is 1～100nm.
Embodiment 3
(1) organic carrier is prepared：Organic solvent is added in container, stirring is warming up to 100 DEG C, add organic resin, protected
Temperature stirring 3 hours, to being completely dissolved, is filtrated to get organic carrier；Described organic solvent be alpha-terpineol, described organic tree
Fat is ethyl cellulose, and organic solvent is 10 with the weight ratio of organic resin：1.
(2) slurry is prepared：By superfine spherical silver powder, flake silver powder, unorganic glass powder, nanometer lanthanum hexaboride, organic carrier
With organic additive mixing, pasty state is stirred into mixer, the grinding of Jing three-roll grinders reaches fineness requirement, that is, obtains crystal silicon too
Positive energy cell backside electrode silver plasm.
Count by weight, the consumption of each component is：35 parts of superfine spherical silver powder, 25 parts of flake silver powder, unorganic glass powder 2
Part, 0.5 part of nanometer lanthanum hexaboride, 52 parts of organic carrier, 1 part of plasticizer, 1 part of surfactant, 0.5 part of thixotropic agent.Described
Superfine spherical silver powder particle diameter is 0.2～0.6 μm.Described nanometer lanthanum hexaboride particle diameter is 1～100nm.
Embodiment 4
(1) organic carrier is prepared：Organic solvent is added in container, stirring is warming up to 80 DEG C, add organic resin, insulation
Stirring 2.5 hours, to being completely dissolved, is filtrated to get organic carrier；Described organic solvent be alpha-terpineol, described organic tree
Fat is ethyl cellulose, and organic solvent is 10 with the weight ratio of organic resin：1.
(2) slurry is prepared：By superfine spherical silver powder, flake silver powder, unorganic glass powder, nanometer lanthanum hexaboride, organic carrier
With organic additive mixing, pasty state is stirred into mixer, the grinding of Jing three-roll grinders reaches fineness requirement, that is, obtains crystal silicon too
Positive energy cell backside electrode silver plasm.
Count by weight, the consumption of each component is：25 parts of superfine spherical silver powder, 25 parts of flake silver powder, unorganic glass powder 6
Part, 0.8 part of nanometer lanthanum hexaboride, 34 parts of organic carrier, 2 parts of plasticizer, 1 part of thixotropic agent, 1 part of wetting agent, surfactant 1
Part.Described superfine spherical silver powder particle diameter is 0.2～0.6 μm.Described nanometer lanthanum hexaboride particle diameter is 1～100nm.
Embodiment 5
(1) organic carrier is prepared：Organic solvent is added in container, stirring is warming up to 90 DEG C, add organic resin, insulation
Stirring 2～3 hours, to being completely dissolved, is filtrated to get organic carrier；Described organic solvent is alpha-terpineol, and described is organic
Resin is ethyl cellulose, and organic solvent is 10 with the weight ratio of organic resin：1.
(2) slurry is prepared：By superfine spherical silver powder, flake silver powder, unorganic glass powder, nanometer lanthanum hexaboride, organic carrier
With organic additive mixing, pasty state is stirred into mixer, the grinding of Jing three-roll grinders reaches fineness requirement, that is, obtains crystal silicon too
Positive energy cell backside electrode silver plasm.
Count by weight, the consumption of each component is：30 parts of superfine spherical silver powder, 20 parts of flake silver powder, unorganic glass powder 5
Part, 1.0 parts of nanometer lanthanum hexaboride, 40 parts of organic carrier, 1 part of plasticizer, 0.5 part of thixotropic agent, 0.5 part of wetting agent.Described is super
Thin ball shape silver powder particle diameter is 0.2～0.6 μm.Described nanometer lanthanum hexaboride particle diameter is 1～100nm.
Embodiment 6
(1) organic carrier is prepared：Organic solvent is added in container, stirring is warming up to 90 DEG C, add organic resin, insulation
Stirring 3 hours, to being completely dissolved, is filtrated to get organic carrier；Described organic solvent be alpha-terpineol, described organic resin
For ethyl cellulose, organic solvent is 8 with the weight ratio of organic resin：1.
(2) slurry is prepared：By superfine spherical silver powder, flake silver powder, unorganic glass powder, nanometer lanthanum hexaboride, organic carrier
With organic additive mixing, pasty state is stirred into mixer, the grinding of Jing three-roll grinders reaches fineness requirement, that is, obtains crystal silicon too
Positive energy cell backside electrode silver plasm.
Count by weight, the consumption of each component is：25 parts of superfine spherical silver powder, 15 parts of flake silver powder, unorganic glass powder 5
Part, 1.0 parts of nanometer lanthanum hexaboride, 40 parts of organic carrier, 0.5 part of thixotropic agent, 0.5 part of wetting agent, 2 parts of surfactant.It is described
Superfine spherical silver powder particle diameter be 0.3～0.6 μm.Described nanometer lanthanum hexaboride particle diameter is 50～100nm.
Comparative example 1 does not contain a nanometer lanthanum hexaboride
(1) organic carrier is prepared：Organic solvent is added in container, stirring is warming up to 80～100 DEG C, add organic tree
Fat, insulated and stirred 2～3 hours, to being completely dissolved, is filtrated to get organic carrier；Described organic solvent is alpha-terpineol, described
Organic resin be ethyl cellulose, the weight ratio of organic solvent and organic resin is 8：1.
(2) slurry is prepared：Superfine spherical silver powder, flake silver powder, unorganic glass powder, organic carrier and organic additive are mixed
Close, with mixer pasty state is stirred into, the grinding of Jing three-roll grinders reaches fineness requirement, that is, obtain crystal silicon solar batteries back side electricity
Pole silver paste.
Count by weight, the consumption of each component is：30 parts of superfine spherical silver powder, 20 parts of flake silver powder, unorganic glass powder 5
Part, 40 parts of organic carrier, 3 parts of plasticizer, 2 parts of surfactant.Described superfine spherical silver powder particle diameter is 0.2～0.6 μm.
Comparative example 2 does not contain flake silver powder and nanometer lanthanum hexaboride
(1) organic carrier is prepared：Organic solvent is added in container, stirring is warming up to 80～100 DEG C, add organic tree
Fat, insulated and stirred 2～3 hours, to being completely dissolved, is filtrated to get organic carrier；Described organic solvent is alpha-terpineol, described
Organic resin be ethyl cellulose, the weight ratio of organic solvent and organic resin is 8：1.
(2) slurry is prepared：By the mixing of superfine spherical silver powder, unorganic glass powder, organic carrier and organic additive, with stirring
Machine stirs into pasty state, and the grinding of Jing three-roll grinders reaches fineness requirement, that is, obtains crystal silicon solar batteries back electrode silver paste.
Count by weight, the consumption of each component is：50 parts of superfine spherical silver powder, 5 parts of unorganic glass powder, organic carrier 40
Part, 3 parts of plasticizer, 2 parts of surfactant.Described superfine spherical silver powder particle diameter is 0.2～0.6 μm.
Silver electrode is obtained using embodiment 1～6 and after electrode silver plasm sintering obtained in comparative example 1～2, silver electrode is tested
Resistivity.In addition, polycrystalline silicon solar will be obtained after embodiment 1～6 and electrode silver plasm sintering obtained in comparative example 1～2
Cell piece, tests the photoelectric transformation efficiency of cell piece.Test result such as table 1 below：
The test result of table 1
| Project | Resistivity (× 10-6Ω·cm) | Photoelectric transformation efficiency |
| Embodiment 1 | 1.45 | 18.88% |
| Embodiment 2 | 1.48 | 18.74% |
| Embodiment 3 | 1.62 | 18.55% |
| Embodiment 4 | 1.73 | 18.52% |
| Embodiment 5 | 1.59 | 18.81% |
| Embodiment 6 | 1.80 | 18.50% |
| Comparative example 1 | 4.50 | 17.96% |
| Comparative example 2 | 3.94 | 17.82% |
As it can be seen from table 1 the solar-electricity obtained using the electrode of solar battery silver paste and preparation method of the present invention
Pond electrode, effectively reduces surface resistivity, and the photoelectric transformation efficiency more than 0.5% of polycrystalline silicon battery plate greatly improved.
Claims (9)
1. a kind of crystal silicon solar batteries back electrode silver paste, it is characterised in that：Count by weight and be made up of following components：It is super
Thin 25～35 parts of ball shape silver powder, 15～25 parts of flake silver powder, 2～6 parts of unorganic glass powder, 0.5～1 part of nanometer lanthanum hexaboride has
34～52 parts of airborne body, 1～10 part of organic additive.
2. crystal silicon solar batteries back electrode silver paste according to claim 1, it is characterised in that：The organic additive
Combine for one or more in plasticizer, thixotropic agent, surfactant, wetting agent.
3. crystal silicon solar batteries back electrode silver paste according to claim 1, it is characterised in that：Described superfine spherical
Silver powder particle diameter is 0.2～0.6 μm.
4. crystal silicon solar batteries back electrode silver paste according to claim 1, it is characterised in that：The described boron of nanometer six
It is 1～100nm to change lanthanum particle diameter.
5. crystal silicon solar batteries back electrode silver paste according to claim 1, it is characterised in that：Described organic carrier
It is dissolved in organic solvent by organic resin and is obtained, described organic solvent is alpha-terpineol, described organic resin is that ethyl is fine
Dimension element, organic solvent is 5～10 with the weight ratio of organic resin：1.
6. the crystal silicon solar batteries back electrode silver paste according to one of Claims 1 to 5, it is characterised in that：By weight
Number meter is made up of following components：30 parts of superfine spherical silver powder, 20 parts of flake silver powder, 5 parts of unorganic glass powder, nanometer lanthanum hexaboride
0.8 part, 40 parts of organic carrier, 5 parts of organic additive.
7. the preparation method of crystal silicon solar batteries back electrode silver paste described in a kind of claim 1, it is characterised in that include as
Lower step：
(1) organic carrier is prepared：Organic solvent is added in container, stirring is warming up to 80～100 DEG C, add organic resin, protected
Temperature stirring 2～3 hours, to being completely dissolved, is filtrated to get organic carrier；
(2) slurry is prepared：By superfine spherical silver powder, flake silver powder, unorganic glass powder, nanometer lanthanum hexaboride, organic carrier and have
Machine additive mixes, and with mixer pasty state is stirred into, and the grinding of Jing three-roll grinders reaches fineness requirement, that is, obtains crystal silicon solar
Cell backside electrode silver plasm.
8. the preparation method of crystal silicon solar batteries back electrode silver paste according to claim 7, it is characterised in that：It is described
Organic solvent be alpha-terpineol, described organic resin is ethyl cellulose, and organic solvent is 5 with the weight ratio of organic resin
～10：1.
9. the preparation method of crystal silicon solar batteries back electrode silver paste according to claim 7, it is characterised in that include
Following steps：
(1) organic carrier is prepared：Organic solvent is added in container, stirring is warming up to 80 DEG C, add organic resin, insulated and stirred
3 hours, to being completely dissolved, it is filtrated to get organic carrier；Described organic solvent is alpha-terpineol, and described organic resin is second
Base cellulose, organic solvent is 8 with the weight ratio of organic resin：1；
(2) slurry is prepared：By superfine spherical silver powder, flake silver powder, unorganic glass powder, nanometer lanthanum hexaboride, organic carrier and have
Machine additive mixes, and with mixer pasty state is stirred into, and the grinding of Jing three-roll grinders reaches fineness requirement, that is, obtains crystal silicon solar
Cell backside electrode silver plasm；
Count by weight, the consumption of each component is：30 parts of superfine spherical silver powder, 20 parts of flake silver powder, 5 parts of unorganic glass powder,
0.8 part of lanthanum hexaboride of nanometer, 40 parts of organic carrier, 3 parts of plasticizer, 2 parts of surfactant；Described superfine spherical silver powder particle diameter
For 0.2～0.6 μm, described nanometer lanthanum hexaboride particle diameter is 1～100nm.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106847367A (en) * | 2017-03-20 | 2017-06-13 | 北京市合众创能光电技术有限公司 | A kind of front electrode of solar battery conductive silver paste and preparation method thereof |
| CN107591218A (en) * | 2017-09-08 | 2018-01-16 | 江苏正能电子科技有限公司 | Full Al-BSF crystal silicon solar battery back face silver paste, preparation method and the usage |
| CN107658045A (en) * | 2017-08-30 | 2018-02-02 | 南通天盛新能源股份有限公司 | A kind of unleaded PERC batteries back electrode silver paste and preparation method |
| CN111372434A (en) * | 2020-03-09 | 2020-07-03 | 广东四维新材料有限公司 | Preparation method of 5G ceramic filter electrosilvering-simulated electromagnetic wave shield |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110151614A1 (en) * | 2008-06-18 | 2011-06-23 | Basf Se | Process for producing electrodes for solar cells |
| CN102576575A (en) * | 2009-09-04 | 2012-07-11 | 巴斯夫欧洲公司 | Composition for printing electrodes |
| CN102903421A (en) * | 2012-08-22 | 2013-01-30 | 广州市儒兴科技开发有限公司 | Crystalline silicon solar cell back side silver slurry with low silver content and preparation method thereof |
| CN104658634A (en) * | 2015-02-03 | 2015-05-27 | 四川银河星源科技有限公司 | Crystalline silicon solar battery back electrode silver paste and preparation method thereof |
-
2016
- 2016-12-16 CN CN201611164704.8A patent/CN106653148A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110151614A1 (en) * | 2008-06-18 | 2011-06-23 | Basf Se | Process for producing electrodes for solar cells |
| CN102576575A (en) * | 2009-09-04 | 2012-07-11 | 巴斯夫欧洲公司 | Composition for printing electrodes |
| CN102903421A (en) * | 2012-08-22 | 2013-01-30 | 广州市儒兴科技开发有限公司 | Crystalline silicon solar cell back side silver slurry with low silver content and preparation method thereof |
| CN104658634A (en) * | 2015-02-03 | 2015-05-27 | 四川银河星源科技有限公司 | Crystalline silicon solar battery back electrode silver paste and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106847367A (en) * | 2017-03-20 | 2017-06-13 | 北京市合众创能光电技术有限公司 | A kind of front electrode of solar battery conductive silver paste and preparation method thereof |
| CN107658045A (en) * | 2017-08-30 | 2018-02-02 | 南通天盛新能源股份有限公司 | A kind of unleaded PERC batteries back electrode silver paste and preparation method |
| CN107591218A (en) * | 2017-09-08 | 2018-01-16 | 江苏正能电子科技有限公司 | Full Al-BSF crystal silicon solar battery back face silver paste, preparation method and the usage |
| CN107591218B (en) * | 2017-09-08 | 2019-05-24 | 江苏正能电子科技有限公司 | Full Al-BSF crystal silicon solar battery back face silver paste, preparation method and the usage |
| CN111372434A (en) * | 2020-03-09 | 2020-07-03 | 广东四维新材料有限公司 | Preparation method of 5G ceramic filter electrosilvering-simulated electromagnetic wave shield |
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