CN110379537A - A kind of solar energy front side conductive silver paste and its preparation method and application - Google Patents
A kind of solar energy front side conductive silver paste and its preparation method and application Download PDFInfo
- Publication number
- CN110379537A CN110379537A CN201910635748.1A CN201910635748A CN110379537A CN 110379537 A CN110379537 A CN 110379537A CN 201910635748 A CN201910635748 A CN 201910635748A CN 110379537 A CN110379537 A CN 110379537A
- Authority
- CN
- China
- Prior art keywords
- solar energy
- front side
- silver paste
- side conductive
- conductive silver
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- 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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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000000178 monomer Substances 0.000 claims abstract description 29
- 239000002253 acid Substances 0.000 claims abstract description 28
- 229920001577 copolymer Polymers 0.000 claims abstract description 20
- 239000001856 Ethyl cellulose Substances 0.000 claims abstract description 16
- 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 abstract description 16
- 235000019325 ethyl cellulose Nutrition 0.000 claims abstract description 16
- 229920001249 ethyl cellulose Polymers 0.000 claims abstract description 16
- 239000011521 glass Substances 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 229910052709 silver Inorganic materials 0.000 claims description 12
- 239000004332 silver Substances 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 11
- 238000007650 screen-printing Methods 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 101001073212 Arabidopsis thaliana Peroxidase 33 Proteins 0.000 claims description 2
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 2
- 101001123325 Homo sapiens Peroxisome proliferator-activated receptor gamma coactivator 1-beta Proteins 0.000 claims description 2
- 102100028961 Peroxisome proliferator-activated receptor gamma coactivator 1-beta Human genes 0.000 claims description 2
- 229910021418 black silicon Inorganic materials 0.000 claims description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 2
- 229920005591 polysilicon Polymers 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims 4
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims 1
- 239000011976 maleic acid Substances 0.000 claims 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 11
- 239000004020 conductor Substances 0.000 abstract description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000007639 printing Methods 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010907 mechanical stirring Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 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
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229920006322 acrylamide copolymer Polymers 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000006117 anti-reflective coating Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 235000010445 lecithin Nutrition 0.000 description 1
- 239000000787 lecithin Substances 0.000 description 1
- 229940067606 lecithin Drugs 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- -1 sapn Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/14—Conductive material dispersed in non-conductive inorganic material
- H01B1/16—Conductive material dispersed in non-conductive inorganic material the conductive material comprising metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- 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 present invention relates to solar energy conductive material technical fields more particularly to a kind of solar energy front side conductive silver paste and its preparation method and application.This solar energy front side conductive silver paste mainly by silver powder, glass powder, ethyl cellulose and the copolymer containing acid-based monomers composition.Being used cooperatively for its copolymer containing acid-based monomers for passing through ethyl cellulose and restriction, can effectively improve fill factor, reduce conductive line width, and raising cell conversion efficiency has excellent market application prospect.
Description
Technical field
The present invention relates to solar energy conductive material technical field more particularly to a kind of solar energy front side conductive silver pastes and its system
Preparation Method and application.
Background technique
Solar energy has been widely used in the real life of people as a kind of reproducible clean energy resource, wherein
Solar cell application is earliest, and technology is also the most mature.Currently, solar battery is widely applied and studies in solar battery
Hot spot, silver paste has important influence to the electric conductivity of solar battery as the main production raw material of solar battery.
In general, most of solar battery sheet is the silicon wafer form of metallization, that is, it is equipped with conductive metal electrode.It is common
Solar battery is by this few part structure of P-type silicon substrate, N-type layer, antireflective coating, front side silver paste, Al-BSF electrode and rear electrode
At.For P-type silicon as base stage, N-type silicon has the suede structure in pyramid, antireflection layer as emitter on N-type semiconductor
And the positive silver electrode in comb teeth-shaped, and directly have back metal contacts on P-type silicon substrate, to constitute typical PN
Tie silica-based solar cell.When solar energy is radiated in very thin N-type layer, P-type layer in connection is reached, new sky is generated
Cave-electronics pair, under the action of PN junction electric field, hole and electronics are moved across the knot in a reverse direction, so that generating can
The endlessly electric current to transmit electric power to external circuit.
Electrode on cell piece is usually to form electrocondution slurry by being screen-printed on substrate and roasting.It is usually conductive
Slurry includes conductive particle, glass powder and organic media.Dry after silk-screen printing, roasting forms fine and close solid conduction
Line.With narrowing for line width, the raising of print speed printing speed, the raising of cell power conversion efficiency, all to the conduction after silk-screen printing
The height of electrode, width, flatness, more stringent requirements are proposed for homogeneity.
For example the patent document of Publication No. CN104751942A discloses a kind of solar battery filament silk-screen printing use
Unleaded electrocondution slurry, cell conversion efficiency is lower, is below 17.7%, and fill factor is less than 79% or less.It discloses for another example
Number for CN106876003A patent document disclosed in it is a kind of matching without net netting version solar battery front side conductive silver paste,
Conductive silver paste is prepared using two kinds of different resins, but cell conversion efficiency is lower, is below 18.8%, and fill factor is less than
79.7%.A kind of for another example solar energy front lead-free silver slurry disclosed in the patent document of Publication No. CN106158070A utilizes
Ethyl cellulose and silane coupling agent, lecithin, sapn, tween etc. are mixed with, gained slurry cell conversion efficiency compared with
It is low, it is below 17.6%, and fill factor is less than 78.3%.For another example mentioned in the patent document of Publication No. CN107045897A
Silver paste of solar cells, utilize ethyl cellulose and coupling agent, cationic surfactant is mixed with, gained slurry
Expect that cell conversion efficiency is lower, is below 18.5%.Therefore a kind of solar energy conductive silver that can effectively improve fill factor is needed
Slurry.
Summary of the invention
The invention solves the above problems, and providing one kind can have compared with high fill factor and have relatively narrow front electrode
Width and the solar energy front side conductive silver paste of higher energy conversion efficiency and its preparation method and application.
The technical solution that the present invention solves the problems, such as is to provide a kind of solar energy front side conductive silver paste, mainly by silver powder, glass
Powder, ethyl cellulose and the copolymer composition containing acid-based monomers.
Preferably, in the copolymer containing acid-based monomers, the acid-based monomers are to contain horse containing sulfonic monomer
One of next sour monomer and the monomer containing acrylic acid are a variety of.
Preferably, the copolymer containing acid-based monomers is the copolymer of two or more acid-based monomers, acidic group list
Body-ethylenic copolymer, one of acid-based monomers-acrylamide copolymer and acid-based monomers-ethenol copolymer or more
Kind.
Preferably, the weight average molecular weight of the copolymer containing acid-based monomers is 1000-5000Mw.
Preferably, the mass percent concentration of the silver powder is 80-95wt%.
Preferably, the mass percent concentration of the silver powder is 85-90wt%.
Preferably, the average grain diameter of the silver powder is 1-6 μm.
Preferably, the mass percent concentration of the glass powder is 1-4wt%.
Preferably, the mass percent concentration of the glass powder is 2-3wt%.
Preferably, the average grain diameter of the glass powder is 0.5-2 μm.
Preferably, the mass percent concentration of the ethyl cellulose is 0.1-1wt%.
Preferably, the mass percent concentration of the ethyl cellulose is 0.1-0.5wt%.
Preferably, the viscosity of the ethyl cellulose is 2-300cP.
Preferably, the mass percent concentration of the copolymer containing acid-based monomers is 0.1-2wt%.
Preferably, the mass percent concentration of the copolymer containing acid-based monomers is 0.1-1wt%.
It is a further object to provide a kind of preparation methods of solar energy front side conductive silver paste, including following step
It is rapid:
A. it after premixing ethyl cellulose and copolymer containing acid-based monomers in solvent, is added in silver powder and glass powder, obtains
To mixture；
B. after mixing by mixture, rolling obtains solar energy front side conductive silver paste to slurry fineness less than 5 μm.
Preferably, mixture is uniformly mixed by way of mechanical stirring or centrifugation.
Preferably, by three-high mill by slurry fineness rolling to less than 5 μm.
It is a still further object of the present invention to provide a kind of applications of solar energy front side conductive silver paste, and silver paste is passed through screen printing
It brushes in monocrystalline silicon, polysilicon, the black silicon of polycrystalline and PERC cell piece.
Beneficial effects of the present invention:
The present invention passes through being used cooperatively for the copolymer containing acid-based monomers of ethyl cellulose and restriction, can effectively improve filling
The factor reduces conductive line width, improves cell conversion efficiency, has excellent market application prospect.
Specific embodiment
It is a specific embodiment of the invention below, and technical scheme of the present invention will be further described, but this hair
It is bright to be not limited to these examples.
Formula of the invention enumerates six kinds of embodiments and three kinds of comparative examples (but not limited to this), is detailed in the following table 1.
In every embodiment and comparative example solar energy front side conductive silver paste the preparation method comprises the following steps: according to given in table 1 be formulated,
Mass percent is supplied to 100% with solvent.After ethyl cellulose and the copolymer containing acid-based monomers are premixed in solvent, add
Enter into silver powder and glass powder, obtains mixture；By mixture and other silver pastes preparation typical additives by mechanical stirring or
Centrifugation after mixing, reaches 5 μm or less by three-high mill to slurry fineness.
Table 1.
Solar cell front side silver paste is configured by table 1, and is tested according to following experiment conditions.
Specific printing condition: printing machine platform Baccni, web plate 400-16-24um, cell piece are monocrystalline silicon piece, printing
Speed 420mm/s.It is sintered in Despatch sintering furnace after printing, is then tested for the property.
Test result is as follows shown in table 2:
According to table 2 as a result, by comparative example 1,2,3 it is found that ethyl cellulose and the copolymer containing acid-based monomers individually make
Used time can improve fill factor on a small quantity, reduce line width, but cell conversion efficiency is not still high.It can from embodiment and comparative example
To find out, when ethyl cellulose and the copolymer containing acid-based monomers are used cooperatively, fill factor can be greatly improved, reduce
Line width, to obtain higher battery conversion efficiency.Meanwhile embodiment prints producing line comparative example with conventional, it can be seen that this hair
Bright solar cell front side silver paste fill factor equally still with higher after through silk-screen printing, higher battery conversion
Efficiency.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (10)
1. a kind of solar energy front side conductive silver paste, it is characterised in that: mainly by silver powder, glass powder, ethyl cellulose and containing acid
The copolymer of base monomer forms.
2. a kind of solar energy front side conductive silver paste according to claim 1, it is characterised in that: being total to containing acid-based monomers
In polymers, the acid-based monomers are containing sulfonic monomer, in the monomer containing maleic acid and the monomer containing acrylic acid
It is one or more.
3. a kind of solar energy front side conductive silver paste according to claim 2, it is characterised in that: being total to containing acid-based monomers
Polymers is the copolymer of two or more acid-based monomers, acid-based monomers-ethylenic copolymer, acid-based monomers-acrylamide
One of copolymer and acid-based monomers-ethenol copolymer are a variety of.
4. a kind of solar energy front side conductive silver paste according to claim 1, it is characterised in that: being total to containing acid-based monomers
The weight average molecular weight of polymers is 1000-5000 Mw.
5. a kind of solar energy front side conductive silver paste according to claim 1, it is characterised in that: the quality percentage of the silver powder
Specific concentration is 80-95wt%.
6. a kind of solar energy front side conductive silver paste according to claim 1, it is characterised in that: the quality hundred of the glass powder
Dividing specific concentration is 1-4wt%.
7. a kind of solar energy front side conductive silver paste according to claim 1, it is characterised in that: the matter of the ethyl cellulose
Amount percent concentration is 0.1-1wt%.
8. a kind of solar energy front side conductive silver paste according to claim 1, it is characterised in that: being total to containing acid-based monomers
The mass percent concentration of polymers is 0.1-2wt%.
9. a kind of preparation method of solar energy front side conductive silver paste according to any one of claims 1 to 8, feature exist
In: the following steps are included:
After ethyl cellulose and the copolymer containing acid-based monomers are premixed in solvent, it is added in silver powder and glass powder, obtains
Mixture；
After mixing by mixture, rolling obtains solar energy front side conductive silver paste to slurry fineness less than 5 μm.
10. a kind of application of solar energy front side conductive silver paste according to any one of claims 1 to 8, it is characterised in that:
By silver paste by silk-screen printing in monocrystalline silicon, polysilicon, the black silicon of polycrystalline and PERC cell piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910635748.1A CN110379537A (en) | 2019-07-15 | 2019-07-15 | A kind of solar energy front side conductive silver paste and its preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910635748.1A CN110379537A (en) | 2019-07-15 | 2019-07-15 | A kind of solar energy front side conductive silver paste and its preparation method and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110379537A true CN110379537A (en) | 2019-10-25 |
Family
ID=68253273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910635748.1A Pending CN110379537A (en) | 2019-07-15 | 2019-07-15 | A kind of solar energy front side conductive silver paste and its preparation method and application |
Country Status (1)
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| CN (1) | CN110379537A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762010A (en) * | 2011-12-31 | 2014-04-30 | 四川虹欧显示器件有限公司 | Conductive silver paste, preparation method and electrode made from conductive silver paste |
| CN104778988A (en) * | 2014-01-09 | 2015-07-15 | 上海贺利氏工业技术材料有限公司 | Low silver conductive paste |
| CN106887270A (en) * | 2017-03-16 | 2017-06-23 | 无锡晶睿光电新材料有限公司 | A kind of depth-width ratio solar energy front side silver paste high and preparation method thereof |
| CN108538431A (en) * | 2018-03-08 | 2018-09-14 | 李润浩 | A kind of silicon solar cell positive silver paste of stabilization and preparation method thereof |
| US20180346371A1 (en) * | 2015-12-10 | 2018-12-06 | Sun Chemical Corporation | Silver conductive paste composition |
| CN109545423A (en) * | 2018-11-01 | 2019-03-29 | 上海匡宇科技股份有限公司 | Electrode of solar battery silver paste composition |
-
2019
- 2019-07-15 CN CN201910635748.1A patent/CN110379537A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103762010A (en) * | 2011-12-31 | 2014-04-30 | 四川虹欧显示器件有限公司 | Conductive silver paste, preparation method and electrode made from conductive silver paste |
| CN104778988A (en) * | 2014-01-09 | 2015-07-15 | 上海贺利氏工业技术材料有限公司 | Low silver conductive paste |
| US20180346371A1 (en) * | 2015-12-10 | 2018-12-06 | Sun Chemical Corporation | Silver conductive paste composition |
| CN106887270A (en) * | 2017-03-16 | 2017-06-23 | 无锡晶睿光电新材料有限公司 | A kind of depth-width ratio solar energy front side silver paste high and preparation method thereof |
| CN108538431A (en) * | 2018-03-08 | 2018-09-14 | 李润浩 | A kind of silicon solar cell positive silver paste of stabilization and preparation method thereof |
| CN109545423A (en) * | 2018-11-01 | 2019-03-29 | 上海匡宇科技股份有限公司 | Electrode of solar battery silver paste composition |
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