CN108511108A - A kind of solar cell positive silver paste and preparation method thereof of the low viscosity without thixotropic agent - Google Patents
A kind of solar cell positive silver paste and preparation method thereof of the low viscosity without thixotropic agent Download PDFInfo
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- CN108511108A CN108511108A CN201810168537.7A CN201810168537A CN108511108A CN 108511108 A CN108511108 A CN 108511108A CN 201810168537 A CN201810168537 A CN 201810168537A CN 108511108 A CN108511108 A CN 108511108A
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- silver paste
- solar cell
- thixotropic agent
- positive silver
- low viscosity
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 47
- 239000004332 silver Substances 0.000 title claims abstract description 47
- 239000013008 thixotropic agent Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 17
- 239000011521 glass Substances 0.000 claims abstract description 15
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- 238000005245 sintering Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 12
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 11
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 10
- -1 alcohol ester Chemical class 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 239000003960 organic solvent Substances 0.000 claims description 8
- 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 7
- 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 7
- 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 7
- VXQBJTKSVGFQOL-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethyl acetate Chemical compound CCCCOCCOCCOC(C)=O VXQBJTKSVGFQOL-UHFFFAOYSA-N 0.000 claims description 5
- FUGIIBWTNARRSF-UHFFFAOYSA-N decane-5,6-diol Chemical compound CCCCC(O)C(O)CCCC FUGIIBWTNARRSF-UHFFFAOYSA-N 0.000 claims description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 239000002023 wood Substances 0.000 claims description 5
- UDSFAEKRVUSQDD-UHFFFAOYSA-N Dimethyl adipate Chemical compound COC(=O)CCCCC(=O)OC UDSFAEKRVUSQDD-UHFFFAOYSA-N 0.000 claims description 4
- ZFOZVQLOBQUTQQ-UHFFFAOYSA-N Tributyl citrate Chemical compound CCCCOC(=O)CC(O)(C(=O)OCCCC)CC(=O)OCCCC ZFOZVQLOBQUTQQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000005355 lead glass Substances 0.000 claims description 4
- 239000001856 Ethyl cellulose Substances 0.000 claims description 3
- 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 3
- 229920001249 ethyl cellulose Polymers 0.000 claims description 3
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 3
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000007639 printing Methods 0.000 abstract description 20
- 239000002002 slurry Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 9
- 239000002994 raw material Substances 0.000 abstract description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 4
- 229910052710 silicon Inorganic materials 0.000 abstract description 4
- 239000010703 silicon Substances 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract description 3
- 238000010422 painting Methods 0.000 abstract description 2
- 239000004615 ingredient Substances 0.000 abstract 1
- 230000008719 thickening Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- 239000013074 reference sample Substances 0.000 description 3
- 238000009288 screen filtration Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 241001669134 Heraeus Species 0.000 description 1
- XTBFLAYPNIPTLX-UHFFFAOYSA-N N=NC=NN.N=NC=NN.C(CCCCC(=O)O)(=O)O Chemical compound N=NC=NN.N=NC=NN.C(CCCCC(=O)O)(=O)O XTBFLAYPNIPTLX-UHFFFAOYSA-N 0.000 description 1
- 235000004443 Ricinus communis Nutrition 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011020 pilot scale process Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000008159 sesame oil Substances 0.000 description 1
- 235000011803 sesame oil Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 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
- 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
A kind of the invention discloses low viscosities solar cell positive silver paste and preparation method thereof without thixotropic agent.Ingredient mainly comprises the following raw materials by weight percent：Ball shape silver powder 80 92%, glass powder 1 4%, organic carrier 5~12%；Auxiliary agent 0~4%.The positive silver paste of the present invention overcomes traditional positive silver paste, reaches grid line plastotype effect using thickening thixotropic agent, the slurry viscosity thus brought is big, and appearance is coarse, the problem of being unsuitable for low line width screen painting.No thixotropic agent positive silver paste has preferable rheological property, the linear moulding ability of excellent printing performance and preferable grid line, it is adapted to the electrode design of lower line width, and then improves the depth-width ratio of gate electrode line after silk-screen quality of the silver paste on silicon chip and sintering, reduces shared light-receiving area.
Description
Technical field
The solar cell positive silver paste that the present invention relates to technical field of electronic materials, especially low viscosities without thixotropic agent and
Preparation method.
Background technology
Continuous growth with the development and the mankind of social economy to energy demand, the finiteness of fossil energy and makes
With the great attention for having caused people to the influence caused by global climate and environment in the process.Therefore, present people get over
To pay close attention to the utilization of the regenerative resources such as wind energy, water energy, geothermal energy, solar energy, wherein solar energy attention highest more.
Currently, China has become largest production and the exported country of silicon solar cell, still, many high-performance core materials are (such as conduction
Silver paste etc.) it is monopolized by overseas enterprise, and conductive silver paste is the main raw material(s) for preparing solar cell.Improve conductive silver paste
Performance be market concern one of emphasis.Solar energy front electrode mainly uses screen printing technique in the production process.Cause
This, the printing performance of conductive silver paste is the important evidence for judging size performance quality.
Du Pont patent US20130180583A1 has used hydrogenated castor oils and the anti-settling thixotropic agent of polyamide wax class
Thixatrol ST or thixatrol Max promote the plasticity effect of slurry.
It congratulates the just silver-colored patents of Li Shi US20160380129A1 and also uses thixotropic agent ' The thixatr opic agent is
About 0.1-5%wt.%of the paste. '
0.5% th ixatrol ST have been used to reach in slurry adhesive disclosed in Supreme Being section CN106601335A patents
To the effect of anti-settling thixotroping.
Anti-settling thixotropic agent has excellent plastotype effect, but also has apparent side effect in positive silver paste.1. hydrogenating castor
The anti-settling thixotropic agent stability difference of sesame oil class is especially affected by temperature, and activation degree is difficult to control in organic production procedure, storage
When environment temperature variation can cause its be precipitated etc..2. the anti-settling thixotropic agent temperature stability of polyamide wax pattern is preferable, but activates
Technics comparing is harsh.3. other inorganic anti-settling thixotropic agent generally have scaling loss residual.4. thickener is relatively narrow using process window, contain
Measure it is slightly higher slurry viscosity is too big in slurry printing process, mobility is bad, be easy to cause in printing process return ink it is bad, give
Printing technology brings problem；The slightly lower viscosity of content is too small, and slurry is difficult to ensure that good secondary grid grid line is high wide in printing process
Than under the trend of especially current superfine wire printing, which becomes narrower.If thixotropic agent can not used but also have excellent modeling
Type ability is a direction of current positive silver paste research.
Invention content
It is an object of the present invention to overcome defect existing in the prior art, a kind of low viscosity is provided without thixotropic agent too
It is positive can battery positive silver paste, have a preferable rheological property, the linear moulding ability of excellent printing performance and preferable grid line,
It is adapted to the electrode design of lower line width, and then improves the height of gate electrode line after silk-screen quality of the silver paste on silicon chip and sintering
Wide ratio reduces shared light-receiving area.
To achieve the above object, the technical scheme is to design a kind of solar cell of low viscosity without thixotropic agent just
Silver paste is made of the raw material of following mass percent：Silver powder 80-92%, glass powder 1-4%, organic carrier 5~12%；It helps
Agent 0~4%.Find that said ratio is optimum proportioning, can reach required advantageous effect after multiple lab scale pilot scale.
Further technical solution is that organic carrier is made of organic resin and organic solvent, and wherein organic resin occupies
The 10%~50% of airborne weight percentage, organic solvent occupy the 50%~90% of airborne weight percentage.
Further technical solution is that silver powder is ball shape silver powder, grain size≤5 micron of ball shape silver powder.
Further technical solution is that organic solvent is selected from butyl carbitol, butyl carbitol acetate, adipic acid diformazan
At least two in ester, dibutyl ethylene glycol ether, alcohol ester 12, tributyl citrate and tributyl phosphate.
Further technical solution is, organic resin be selected from hydrogenated wood rosin glycerol ester, acetylbutyrylcellulose, ethyl cellulose and
At least two in rilanit special.For front side silver paste prepared by the requirement present invention of 30 μm or less line widths printing, do not have to anti-
Heavy thixotropic agent, using resin based on hydrogenated wood rosin glycerol ester, the content by suitably promoting the inorganic powders such as silver powder, glass powder reaches
The purpose slightly thickened.Solar cell positive silver paste of the low viscosity without thixotropic agent of the present invention, the glossy exquisiteness of appearance drop significantly
The low viscosity of slurry improves the plastotype effect of printing fluency and the printing of low line width.
Further technical solution is that glass powder is for lead glass frit or without at least one of lead glass frit.
The method for preparing solar cell positive silver paste of the low viscosity without thixotropic agent, including following preparation process：
Step 1：Prepare organic carrier：The organic resin that mass fraction 10%~50% is weighed by formula rate, weighs matter
Measure the organic solvent of score 50%~90%, the high speed dispersion 1~3 hour at a temperature of 45~85 DEG C, obtain it is uniform have it is airborne
Body；
Step 2：By formula rate weigh quality of cathode silver percentage be 80~92%, organic carrier weight percent 5~
12%, glass powder mass percent 1~4%, auxiliary agent quality percentage 0~4% mixes in planetary stirring machine or other blenders
It closes uniformly, then 10 μm is dispersed to hereinafter, can be made into solar cell positive silver paste of the low viscosity without thixotropic agent on three-roller.
Further technical solution is maximum fineness≤7 μm, average fineness≤5 μm of solar cell positive silver paste, Gu
Body content is 70~95%, and viscosity is 80~100Pa.s, and sintering temperature is 760~850 DEG C.
The advantages of the present invention are：The positive silver paste of the present invention overcomes traditional positive silver paste, uses increasing
Thick thixotropic agent reaches grid line plastotype effect, and the slurry viscosity thus brought is big, and appearance is coarse, is unsuitable for low line width screen painting
The problem of.No thixotropic agent positive silver paste has a preferable rheological property, excellent printing performance and preferable grid line it is linear moulding
Ability, is adapted to the electrode design of lower line width, and then improves electrode grid after silk-screen quality of the silver paste on silicon chip and sintering
The depth-width ratio of line reduces shared light-receiving area；For front side silver paste prepared by the requirement present invention of 30 μm or less line widths printing, no
With anti-settling thixotropic agent, using resin based on hydrogenated wood rosin glycerol ester, by the content for suitably promoting the inorganic powders such as silver powder, glass powder
Achieve the purpose that slightly to thicken.Solar cell positive silver paste of the low viscosity without thixotropic agent of the present invention, the glossy exquisiteness of appearance, greatly
The big viscosity for reducing slurry improves the plastotype effect of printing fluency and the printing of low line width.
Specific implementation mode
With reference to embodiment, the specific embodiment of the present invention is further described.Following embodiment is only used for more
Add and clearly demonstrate technical scheme of the present invention, and not intended to limit the protection scope of the present invention.
Embodiment one：
The present invention is a kind of solar cell positive silver paste of the low viscosity without thixotropic agent, composition and its weight percent：
Silver powder 88.2%, glass powder 3%, organic carrier 7.5%, remaining be auxiliary agent.
First, organic carrier is prepared：Alcohol ester ten two 18%, butyl carbitol acetate 37%, dimethyl adipate 24%,
Dibutyl ethylene glycol ether 5%, hydrogenated rosin 12% and acetylbutyrylcellulose 4% are dissolved 2 hours at a temperature of 60 DEG C, are obtained
Uniform organic carrier；Weigh that silver powder 88.2%, glass powder 3%, organic carrier 7.5%, remaining is helps by above-mentioned formula rate
Agent is uniformly mixed in planetary stirring machine or other blenders, then is dispersed to 10 μm hereinafter, can be made into low on three-roller
The solar cell conductive silver paste of the solar cell conductive silver paste of the high plastotype ability of viscosity, the high plastotype ability of low viscosity is passed through
400 mesh screen filtrations, you can obtain highly uniform solar cell front side silver paste.
The viscosity of the slurry is 90Pa.s (25 DEG C), has extraordinary printing performance, the halftone for being 36 in thin grid width,
The polysilicon the piece number of test is 10, and the depth-width ratio that is averaged is 0.44.
Embodiment two：
With being different only in that for embodiment one, positive silver paste is made of the raw material of following mass percent：Silver powder 88.5%,
Glass powder 3.0%, organic carrier 7.6%, remaining be auxiliary agent.
Preparing the process of organic carrier is：Alcohol ester ten two 18%, butyl carbitol acetate 34%, dimethyl adipate
22%, dibutyl ethylene glycol ether 4.5%, hydrogenated wood rosin glycerol ester 11.5%, ethyl cellulose 4%, rilanit special 6%, at 60 DEG C
At a temperature of dissolve 2 hours, obtain uniform organic carrier；Silver powder 88.5% is weighed by above-mentioned formula rate, glass powder 3%, is had
Airborne body 7.6%, remaining be auxiliary agent, be uniformly mixed, then disperse on three-roller in planetary stirring machine or other blenders
To 10 μm hereinafter, can be made into the solar cell conductive silver paste of the high plastotype ability of low viscosity, the high plastotype ability of low viscosity is too
Positive energy battery conductive silver paste passes through 400 mesh screen filtrations, you can obtains highly uniform solar cell front side silver paste.
The viscosity of the slurry is 81Pa.s (25 DEG C), has extraordinary printing performance, the halftone for being 36 in thin grid width,
The polysilicon the piece number of test is 10, depth-width ratio 0.40.
Embodiment three：
With being different only in that for embodiment one, positive silver paste is made of the raw material of following mass percent：Silver powder 88.5%,
Glass powder 3%, organic carrier 7.3%, remaining be auxiliary agent.
Preparing the process of organic carrier is：Alcohol ester ten two 18%, butyl carbitol acetate 37%, dimethyl adipate
24%, dibutyl ethylene glycol ether 5%, hydrogenated rosin 12% and acetylbutyrylcellulose 4% dissolve 2 hours at a temperature of 80 DEG C,
Obtain uniform organic carrier；By above-mentioned formula rate weigh silver powder 88.5%, glass powder 3%, organic carrier 7.3%, remaining
For solvent, it is uniformly mixed in planetary stirring machine or other blenders, then 10 μm are dispersed to hereinafter, can make on three-roller
At the solar cell conductive silver paste of the high plastotype ability of low viscosity, the solar cell conductive silver paste of the high plastotype ability of low viscosity passes through
Cross 400 mesh screen filtrations, you can obtain highly uniform solar cell front side silver paste.
The viscosity of the slurry is 81Pa.s (25 DEG C), has extraordinary printing performance, the halftone for being 36 in thin grid width,
The polysilicon the piece number of test is 10, depth-width ratio 0.43.
Following table is compared using the battery efficiency that example slurry and the mainstream product in the market are done：
| Slurry | Uoc | Isc | Rs | Rsh | FF | Ncell |
| Example 1 | 0.63913 | 9.50758 | 0.00159 | 595.707 | 81.0218 | 0.2012 |
| Example 2 | 0.63967 | 9.52193 | 0.00154 | 289.567 | 81.1543 | 0.20126 |
| Example 3 | 0.63807 | 9.53825 | 0.00158 | 589.008 | 80.8696 | 0.20146 |
| Reference sample | 0.63946 | 9.48423 | 0.00159 | 911.754 | 80.9646 | 0.20099 |
Wherein, Uoc, that is, open-circuit voltage；Isc, that is, breaking current；Rs, that is, series resistance；Rsh, that is, parallel resistance；FF is filled
The factor；Ncell, that is, transfer efficiency；The reference sample trade mark is her aeus 9641.
Comparative example one：
The positive silver paste with reference to made of patent US20130180583A1.
Comparative example two：
The positive silver paste with reference to made of patent US20160380129A1.
Comparative example three：
The positive silver paste with reference to made of patent CN106601335A.
Following table is the comparison of embodiment and comparative example difference index：
| Viscosity (25 DEG C) | Depth-width ratio | Disconnected grid ratio | Line width after print | The line width limit | |
| Example 1 | 90Pa.s | 0.40 | 1 | 35 | 30 |
| Example 2 | 81Pa.s | 0.40 | 2 | 37 | 30 |
| Example 3 | 81Pa.s | 0.43 | 1 | 35 | 30 |
| Reference sample | 203Pa.s | 0.35 | 5 | 40 | 35 |
| Comparative example 1 | 263Pa.s | 0.32 | 6 | 45 | 40 |
| Comparative example 2 | 224Pa.s | 0.36 | 5 | 43 | 37 |
| Comparative example 3 | 210Pa.s | 0.37 | 7 | 43 | 40 |
Wherein, line width is the line width designed when halftone is 32 after printing after print, after the line width limit criticizes silver paste printing
Limiting value (the line width unit of the most thin line width of filament：um)；Disconnected grid ratio is the radical of the disconnected grid of a piece of photovoltaic cell on piece.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of solar cell positive silver paste of low viscosity without thixotropic agent, which is characterized in that by the original of following mass percent
Material is constituted：Silver powder 80-92%, glass powder 1-4%, organic carrier 5~12%；Auxiliary agent 0~4%.
2. a kind of solar cell positive silver paste of the low viscosity without thixotropic agent as described in claim 1, which is characterized in that described
Organic carrier is made of organic resin and organic solvent, wherein organic resin occupy airborne weight percentage 10%~
50%, organic solvent occupies the 50%~90% of airborne weight percentage.
3. a kind of solar cell positive silver paste of the low viscosity without thixotropic agent as claimed in claim 2, which is characterized in that described
Silver powder is ball shape silver powder, grain size≤5 micron of ball shape silver powder.
4. a kind of solar cell positive silver paste of the low viscosity without thixotropic agent as claimed in claim 3, which is characterized in that described
Organic solvent be selected from butyl carbitol, butyl carbitol acetate, dimethyl adipate, dibutyl ethylene glycol ether, alcohol ester 12,
At least two in tributyl citrate and tributyl phosphate.
5. a kind of solar cell positive silver paste of the low viscosity without thixotropic agent as claimed in claim 4, which is characterized in that described
Organic resin in hydrogenated wood rosin glycerol ester, acetylbutyrylcellulose, ethyl cellulose and rilanit special at least two.
6. a kind of solar cell positive silver paste of the low viscosity without thixotropic agent as claimed in claim 5, which is characterized in that described
Glass powder is for lead glass frit or without at least one of lead glass frit.
7. preparing such as claim its solar cell positive silver paste of low viscosity without thixotropic agent as described in any one of 1 to 6
Method, which is characterized in that including following preparation process：
Step 1：Prepare organic carrier：The organic resin that mass fraction 10%~50% is weighed by formula rate weighs quality point
The organic solvent of number 50%~90%, high speed dispersion 1~3 hour, obtains uniform organic carrier at a temperature of 45~85 DEG C；
Step 2：By formula rate weigh quality of cathode silver percentage be 80~92%, organic carrier weight percent 5~
12%, glass powder mass percent 1~4%, auxiliary agent quality percentage 0~4% mixes in planetary stirring machine or other blenders
It closes uniformly, then 10 μm is dispersed to hereinafter, can be made into solar cell positive silver paste of the low viscosity without thixotropic agent on three-roller.
8. the method for preparing solar cell positive silver paste of the low viscosity without thixotropic agent as claimed in claim 7, feature exist
In maximum fineness≤7 μm, average fineness≤5 μm of the solar cell positive silver paste, solid content are 70~95%, are glued
Degree is 80~100Pa.s, and sintering temperature is 760~850 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168537.7A CN108511108A (en) | 2018-02-28 | 2018-02-28 | A kind of solar cell positive silver paste and preparation method thereof of the low viscosity without thixotropic agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168537.7A CN108511108A (en) | 2018-02-28 | 2018-02-28 | A kind of solar cell positive silver paste and preparation method thereof of the low viscosity without thixotropic agent |
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| CN108511108A true CN108511108A (en) | 2018-09-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114203337A (en) * | 2021-12-13 | 2022-03-18 | 江苏聚盈新材料科技有限公司 | High-recovery solar cell front silver paste and preparation method thereof |
| CN115985549A (en) * | 2023-01-06 | 2023-04-18 | 广州市儒兴科技股份有限公司 | Electrode slurry and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110240124A1 (en) * | 2010-03-30 | 2011-10-06 | E.I. Du Pont De Nemours And Company | Metal pastes and use thereof in the production of silicon solar cells |
| CN102760512A (en) * | 2012-05-28 | 2012-10-31 | 杭州正银电子材料有限公司 | Lead-free silver electroconductive slurry used for forming crystalline silicon solar cell front surface electrode, and preparation method thereof |
| CN103915127A (en) * | 2013-01-03 | 2014-07-09 | 上海匡宇电子技术有限公司 | Front silver paste for high sheet resistance silicon-based solar cell and preparing method of front silver paste |
| CN104751938A (en) * | 2013-12-31 | 2015-07-01 | 比亚迪股份有限公司 | Conductive paste for solar battery |
| CN106057277A (en) * | 2016-06-03 | 2016-10-26 | 常州聚和新材料股份有限公司 | Silver paste for forming back silver electrode of back passivation solar battery |
| CN106448808A (en) * | 2016-12-12 | 2017-02-22 | 北京市合众创能光电技术有限公司 | Knotless screen printing front side silver paste for crystalline silicon solar cells |
-
2018
- 2018-02-28 CN CN201810168537.7A patent/CN108511108A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110240124A1 (en) * | 2010-03-30 | 2011-10-06 | E.I. Du Pont De Nemours And Company | Metal pastes and use thereof in the production of silicon solar cells |
| CN102760512A (en) * | 2012-05-28 | 2012-10-31 | 杭州正银电子材料有限公司 | Lead-free silver electroconductive slurry used for forming crystalline silicon solar cell front surface electrode, and preparation method thereof |
| CN103915127A (en) * | 2013-01-03 | 2014-07-09 | 上海匡宇电子技术有限公司 | Front silver paste for high sheet resistance silicon-based solar cell and preparing method of front silver paste |
| CN104751938A (en) * | 2013-12-31 | 2015-07-01 | 比亚迪股份有限公司 | Conductive paste for solar battery |
| CN106057277A (en) * | 2016-06-03 | 2016-10-26 | 常州聚和新材料股份有限公司 | Silver paste for forming back silver electrode of back passivation solar battery |
| CN106448808A (en) * | 2016-12-12 | 2017-02-22 | 北京市合众创能光电技术有限公司 | Knotless screen printing front side silver paste for crystalline silicon solar cells |
Non-Patent Citations (1)
| Title |
|---|
| 潘长华: "《实用小化工生产大全 第二卷》", 31 December 1997, 化学工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114203337A (en) * | 2021-12-13 | 2022-03-18 | 江苏聚盈新材料科技有限公司 | High-recovery solar cell front silver paste and preparation method thereof |
| CN115985549A (en) * | 2023-01-06 | 2023-04-18 | 广州市儒兴科技股份有限公司 | Electrode slurry and preparation method thereof |
| CN115985549B (en) * | 2023-01-06 | 2024-04-16 | 广州市儒兴科技股份有限公司 | Electrode slurry and preparation method thereof |
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