CN106531282B - Photovoltaic solar cell conductive silver paste - Google Patents
Photovoltaic solar cell conductive silver paste Download PDFInfo
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- CN106531282B CN106531282B CN201611165420.0A CN201611165420A CN106531282B CN 106531282 B CN106531282 B CN 106531282B CN 201611165420 A CN201611165420 A CN 201611165420A CN 106531282 B CN106531282 B CN 106531282B
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- conductive silver
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 239000000843 powder Substances 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000011521 glass Substances 0.000 claims abstract description 20
- 239000011230 binding agent Substances 0.000 claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 14
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Inorganic materials O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052709 silver Inorganic materials 0.000 claims abstract description 9
- 239000004332 silver Substances 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 31
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 20
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 229910052681 coesite Inorganic materials 0.000 claims description 13
- 229910052906 cristobalite Inorganic materials 0.000 claims description 13
- 239000000377 silicon dioxide Substances 0.000 claims description 13
- 229910052682 stishovite Inorganic materials 0.000 claims description 13
- 229910052905 tridymite Inorganic materials 0.000 claims description 13
- 239000003960 organic solvent Substances 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 150000002148 esters Chemical class 0.000 claims description 10
- 239000004094 surface-active agent Substances 0.000 claims description 7
- 239000006259 organic additive Substances 0.000 claims description 6
- 239000013008 thixotropic agent 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
- 229920002521 macromolecule Polymers 0.000 claims description 3
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 2
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 2
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims 2
- 239000002270 dispersing agent Substances 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 9
- 230000001070 adhesive effect Effects 0.000 abstract description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052710 silicon Inorganic materials 0.000 abstract description 8
- 239000010703 silicon Substances 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 239000000758 substrate Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 15
- DAFHKNAQFPVRKR-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylpropanoate Chemical group CC(C)C(O)C(C)(C)COC(=O)C(C)C DAFHKNAQFPVRKR-UHFFFAOYSA-N 0.000 description 10
- 239000006185 dispersion Substances 0.000 description 10
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 7
- 239000000835 fiber Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- OKJADYKTJJGKDX-UHFFFAOYSA-N Butyl pentanoate Chemical compound CCCCOC(=O)CCCC OKJADYKTJJGKDX-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910020816 Sn Pb Inorganic materials 0.000 description 1
- 229910020922 Sn-Pb Inorganic materials 0.000 description 1
- 229910008783 Sn—Pb Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000012546 transfer Methods 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
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01L31/022441—Electrode arrangements specially adapted for back-contact 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Life Sciences & Earth Sciences (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Dispersion Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Inorganic Chemistry (AREA)
- Conductive Materials (AREA)
Abstract
The invention discloses photovoltaic solar cell conductive silver pastes, include following components according to weight percent: organic composite silver powder material 40 ~ 95%, glass powder 1 ~ 8%, organic binder 3 ~ 55%, MnO2Powder 0 ~ 5.0%.Photovoltaic solar cell conductive silver paste provided by the invention, which improve silver electrodes in the adhesive force of silicon substrate surface, improves the incident photon-to-electron conversion efficiency of solar battery, reduces the inefficient ratio of solar battery, improves the concentration degree of solar battery efficiency distribution.
Description
Technical field
The present invention relates to solar cell conductive silver paste technical field, in particular to a kind of photovoltaic solar cell conductive silver
Slurry.
Background technique
Conductive silver paste is widely used in electronics industry and new energy field.In photovoltaic solar cell preparation and subsequent battery pack
During dressing up the electrification component for implementing photoelectric conversion, conductive silver paste is the key that realize that photovoltaic solar expands large-scale use material
One of material, it directly affects the incident photon-to-electron conversion efficiency and component generating efficiency and service life of solar battery.
Conductive silver paste is orderly distributed in the two sides of semi-conductor silicon chip by silk-screen printing technique.By Fast Sintering technology,
It is formed on silicon wafer orderly aligned grid line (commonly referred to as grid line), thin grid line (also known as secondary grid) is usual 40~60 microns wide by 15
The front that~20 microns of height are distributed in solar battery exports the electronics of photoelectron excitation.Usual 1.2~1.6 millimeters of main gate line
Wide 10 microns of height summarize the electronics of photon excitation derived from secondary grid line.
During actually using photovoltaic solar cell, by 60~72 solar battery assembled in series and it is embedded in glass
In glass and macromolecule backboard, for assembling generator unit in this way photovoltaic module, conventional power has 250~320 watts.In order to realize too
The assembled in series of positive energy battery is also required to pass through the life of silk-screen printing Fast Sintering using conductive silver paste at the back side of solar battery
At back electrode, by welding (applying Sn-Pb alloy on copper strips) by the back electrode of a piece of solar battery and another solar-electricity
The front main grid in pond is welded together.Therefore silver electrode and silica-base material combine and the structure at their interfaces directly affects component
Service life and power loss when conducting the power loss and battery assembly of determined monolithic battery by interface electronics.
The ideal Ohmic contact formed between silver electrode and semi-conductor silicon chip is to improve solar cell photoelectric transfer efficiency to reduce electricity
The guarantee of pond assembling power loss.
Summary of the invention
It is above-mentioned to solve the problems, such as, the purpose of the present invention is to provide a kind of photovoltaic solar cell conductive silver paste,
It can improve and silicon substrate binding force, raising interface electronics conduction efficiency.
In order to achieve the above objectives, the technical scheme is that
Photovoltaic solar cell conductive silver paste, includes following components according to weight percent:
In preferred technical solution, the organic binder includes following components by weight percentage:
In preferred technical solution, the organic solvent is butyl or butyl acetate or adjacent benzene
Any one of dibutyl carboxylic acid or dioctyl phthalate or combination.
In preferred technical solution, organic coalescing agent is Texanol ester alcohol coalescing agent, the organic additive
Including surfactant, thixotropic agent and resin, wherein the surfactant is the dispersion of macromolecule Solsperse series super
Agent, the thixotropic agent are any one of Thixatrol ST or Thixatrol PLUS or Thixatrol Max.
In preferred technical solution, the MnO2The partial size of powder is less than 10 μm.
In preferred technical solution, the glass powder contains Bi2O3、B2O3And SiO2Component.
In preferred technical solution, each component content in the glass powder by weight percentage are as follows: Bi2O3: 50~
90%, B2O3: 2~30%, SiO2: 1~25%.
In preferred technical solution, the organic composite silver powder material is the silver powder material for being coated with surfactant
Material.
In preferred technical solution, the content of surfactant is 0.01~1.5% in the organic composite silver powder material.
In preferred technical solution, the MnO2Powder does not fuse into before preparing silver paste or part is fused into or all fuses into institute
It states in glass powder.
The beneficial effects of the present invention are:
Using technical solution of the present invention, MnO2Addition can improve silver electrode in the adhesive force of silicon face, improve light
Conduction efficiency of the electronics of son excitation from silicon face to silver electrode, increases the transformation efficiency of solar battery.Reduce electronics conduction
Energy loss, reduce the inefficient ratio of solar battery, improve the concentration degree of solar battery efficiency distribution, improve silver electrode
With the Ohmic contact of semiconductor silicon, the internal resistance of cell is reduced, the power loss of battery assembled in series is reduced, improves making for photovoltaic module
Use the service life.
Specific embodiment
Above scheme is described further below in conjunction with specific embodiment.It should be understood that these embodiments are for illustrating
The present invention and be not limited to limit the scope of the invention.Implementation condition used in the examples can be done according to the condition of specific producer
Further adjustment, the implementation condition being not specified is usually the condition in routine experiment.
Embodiment 1
67.5%Texanol ester alcohol coalescing agent is mixed with 24.1% butyl, then by 8.4% ethyl fibre
Dimension element, which is dissolved in the organic solvent of ester alcohol coalescing agent and butyl, is made organic binder；By 55% organic composite silver
Powder material, 3% glass powder (Bi2O381%, B2O317%, SiO2And 0.5%MnO 2%)2It is organic viscous that powder is placed in 41.5%
Dispersion mixing uniformly obtains conductive silver paste in knot agent.
Embodiment 2
67.5%Texanol ester alcohol coalescing agent is mixed with 24.1% butyl, then by 8.4% ethyl fibre
Dimension element, which is dissolved in the organic solvent of ester alcohol coalescing agent and butyl, is made organic binder；By 54.5% organic composite
Silver powder material, 3% glass powder (Bi2O381%, B2O317%, SiO2And 1%MnO 2%)2Powder is placed in 41.5% organic adhesive
Dispersion mixing uniformly obtains conductive silver paste in agent.
Embodiment 3
67.5%Texanol ester alcohol coalescing agent is mixed with 24.1% butyl, then by 8.4% ethyl fibre
Dimension element, which is dissolved in the organic solvent of ester alcohol coalescing agent and butyl, is made organic binder；By 54% organic composite silver
Powder material, 3% glass powder (Bi2O381%, B2O317%, SiO2And 1.5%MnO 2%)2Powder is placed in 41.5% organic adhesive
Dispersion mixing uniformly obtains conductive silver paste in agent.
Embodiment 4
67.7%Texanol ester alcohol coalescing agent is mixed with 23.5% butyl, then by 8.8% ethyl fibre
Dimension element, which is dissolved in the organic solvent of ester alcohol coalescing agent and butyl, is made organic binder；By 61.3% organic composite
Silver powder material, 3.2% glass powder (Bi2O381%, B2O317%, SiO2And 1.5%MnO 2%)2It is organic viscous that powder is placed in 34%
Dispersion mixing uniformly obtains conductive silver paste in knot agent.
Embodiment 5
90%Texanol ester alcohol coalescing agent is mixed with 8.4% butyl, then by 1.5% ethyl cellulose
Element, 0.1% organic additive, which are dissolved in the organic solvent of ester alcohol coalescing agent and butyl, is made organic binder；It will
42% organic composite silver powder material, 8% glass powder (Bi2O381%, B2O317%, SiO2And 0.1%MnO 2%)2Powder is placed in
Dispersion mixing uniformly obtains conductive silver paste in 49.9% organic binder.
Embodiment 6
59%Texanol ester alcohol coalescing agent is mixed with 28.95% butyl, then by 0.05% ethyl fibre
Dimension element, 12% organic additive, which are dissolved in the organic solvent of ester alcohol coalescing agent and butyl, is made organic binder；
By 0.5%MnO2Powder fuses into 3% glass powder (Bi in advance2O381%, B2O317%, SiO22%) in, then it is organic by 88.5%
Silver powder material molten has part MnO2Glass powder, 3%MnO2It is uniform that powder is placed in dispersion mixing in 5% organic binder
To conductive silver paste.
Embodiment 7
35.5%Texanol ester alcohol coalescing agent is mixed with 35% butyl, then by 15% ethyl cellulose
Element, 14.5% organic additive, which are dissolved in the organic solvent of ester alcohol coalescing agent and butyl, is made organic binder；
By 70% organic composite silver powder material, 5% glass powder (Bi2O381%, B2O317%, SiO2And 5%MnO 2%)2Powder is placed in
Dispersion mixing uniformly obtains conductive silver paste in 20% organic binder.
Comparative example 1
67.5%Texanol ester alcohol coalescing agent is mixed with 24.1% butyl, then by 8.4% ethyl fibre
Dimension element, which is dissolved in the organic solvent of ester alcohol coalescing agent and butyl, is made organic binder；By 55.5% organic composite
Silver powder material, 3% glass powder (Bi2O381%, B2O317%, SiO2And 0%MnO 2%)2Powder is placed in 41.5% organic adhesive
Dispersion mixing uniformly obtains conductive silver paste in agent.
Comparative example 2
67.7%Texanol ester alcohol coalescing agent is mixed with 23.5% butyl, then by 8.8% ethyl fibre
Dimension element, which is dissolved in the organic solvent of ester alcohol coalescing agent and butyl, is made organic binder；By 61.8% organic composite
Silver powder material, 3.2% glass powder (Bi2O381%, B2O317%, SiO2And 1.0%MnO 2%)2It is organic viscous that powder is placed in 34%
Dispersion mixing uniformly obtains conductive silver paste in knot agent.
Performance test
(1) electricity of solar battery back made of the conductive silver paste that above-described embodiment 1~3 and comparative example 1 are prepared
Pole, which carries out indexs performance test, the test results such as photoelectric conversion efficiency, fill factor, parallel resistance, series resistance, see the table below 1,
The test method of its indices is conventional method in that art.
(2) digital display is used by the main gate line of the solar battery sheet of soldering welding conductive silver paste using identical technique
Pull and push dynamometer tests adhesive force, and test result see the table below 2.
The performance indexes of back electrode of solar cell made of 1 conductive silver paste of 1 Examples 1 to 3 of table and comparative example
The adhesive force of 1 conductive silver paste of 2 Examples 1 to 3 of table and comparative example
| Average adhesive force (gram force) | |
| Embodiment 1 | 774 |
| Embodiment 2 | 835 |
| Embodiment 3 | 846 |
| Comparative example 1 | 722 |
Back electrode of solar cell made of the conductive silver paste that above-described embodiment 4 and comparative example 2 are prepared carries out
Photoelectric conversion efficiency, fill factor, parallel resistance, series resistance index performance test, test result see the table below 3, and items refer to
Target test method is conventional method in that art.Using identical technique by the solar battery of soldering welding electrocondution slurry
On the back electrode of piece, adhesive force is tested with digital displaying push-and-pull tensiometer, test result is listed in table 3.The result shows that embodiment 4 and right
Every electrical performance indexes of ratio 2 are close with comparative example, but the solder attachment power of embodiment 4 is apparently higher than comparative example 2.In addition,
The efficiency of back electrode of solar cell made of embodiment 4 and its 2 conductive silver paste of comparative example is tested, although its electrical property
Close, the inefficient ratio (< 20.1%) of back electrode of solar cell made of 4 conductive silver paste of embodiment obviously subtracts than its comparative example
It is few, it the results are shown in Table 4.The efficiency of back electrode of solar cell made of 4 conductive silver paste of embodiment more collects than the efficiency of comparative example 2
In, in other words, the efficiency concentration degree of back electrode of solar cell made of 4 conductive silver paste of embodiment is more preferable than its comparative example 2.
Therefore, MnO2The raising of content not only increases solder attachment power and reduces inefficient ratio to improve efficiency concentration
Degree.
The performance indexes of back electrode of solar cell made of 3 embodiment 4 of table and 2 conductive silver paste of comparative example
Back electrode of solar cell efficiency test result figure made of 4 embodiment 4 of table and 2 conductive silver paste of comparative example is (single
Position: %)
The foregoing examples are merely illustrative of the technical concept and features of the invention, its object is to allow the person skilled in the art to be
It cans understand the content of the present invention and implement it accordingly, it is not intended to limit the scope of the present invention.It is all smart according to the present invention
The equivalent transformation or modification that refreshing essence is done, should be covered by the protection scope of the present invention.
Claims (1)
1. photovoltaic solar cell conductive silver paste, which is characterized in that according to weight percent include following components:
Organic composite silver powder material 40 ~ 95%,
Glass powder 1 ~ 8%, the glass powder contain Bi2O3、B2O3And SiO2Component, in the glass powder by weight
The each component content of percentage are as follows: Bi2O3: 50 ~ 90%, B2O3: 2 ~ 30%, SiO2: 1 ~ 25%；
Organic binder 3 ~ 55%,
MnO2Powder 1.5 ~ 5.0%, the MnO2The partial size of powder is less than 10 μm；
The weight percent summation of the above components is 100%, and the organic composite silver powder material is to be coated with surface-active
The silver powder material of agent, the content of surfactant is 0.01 ~ 1.5% in organic composite silver powder material；The MnO2It is prepared by powder
It is not fused into before silver paste or part is fused into or all fused into the glass powder；
Wherein, the organic binder includes following components by weight percentage:
Ethyl cellulose 0.05 ~ 15%,
Organic solvent 8 ~ 35%,
Organic coalescing agent 35 ~ 90%,
Organic additive 0-15%,
The weight percent summation of the above components is 100%, and the organic solvent is butyl or butyl
Acetate or any one of dibutyl phthalate or dioctyl phthalate or combination, organic coalescing agent are
Ester alcohol coalescing agent, the organic additive include surfactant and thixotropic agent, wherein the surfactant is macromolecule
Solsperse series super dispersing agent, the thixotropic agent are Thixatrol ST or Thixatrol PLUS or Thixatrol
Any one of Max.
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| CN201611165420.0A CN106531282B (en) | 2016-12-16 | 2016-12-16 | Photovoltaic solar cell conductive silver paste |
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| CN201611165420.0A CN106531282B (en) | 2016-12-16 | 2016-12-16 | Photovoltaic solar cell conductive silver paste |
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| CN111341483A (en) * | 2019-12-31 | 2020-06-26 | 上海匡宇科技股份有限公司 | Heterojunction solar cell conductive silver paste and low-temperature curing method thereof |
| CN111341481B (en) * | 2020-03-06 | 2021-11-09 | 河北晶乐光电科技有限公司 | Back electrode paste and preparation method thereof |
| CN112071922B (en) * | 2020-09-09 | 2022-05-10 | 西安宏星电子浆料科技股份有限公司 | Screen printing method for solar front silver grid line |
| CN112599642A (en) * | 2020-12-18 | 2021-04-02 | 泰州隆基乐叶光伏科技有限公司 | Welding method of battery piece and photovoltaic module |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853711A (en) * | 2009-03-31 | 2010-10-06 | Dic株式会社 | Electroconductive paste composition and the method of producing the same |
| CN101964219A (en) * | 2010-08-10 | 2011-02-02 | 上海九晶电子材料股份有限公司 | Silver paste for positive of crystalline silicon solar cell and preparation method thereof |
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| CN103021510B (en) * | 2011-09-22 | 2016-04-13 | 比亚迪股份有限公司 | A kind of crystal silicon solar energy battery front electrode silver slurry and preparation method thereof |
| CN102368391B (en) * | 2011-10-26 | 2013-05-22 | 南昌大学 | High-conductivity lead-free silver paste used for crystalline silicon solar cell and preparation method thereof |
| JP6027765B2 (en) * | 2012-05-02 | 2016-11-16 | 株式会社ノリタケカンパニーリミテド | Lead-free conductive paste composition for solar cells |
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| CN101853711A (en) * | 2009-03-31 | 2010-10-06 | Dic株式会社 | Electroconductive paste composition and the method of producing the same |
| CN101964219A (en) * | 2010-08-10 | 2011-02-02 | 上海九晶电子材料股份有限公司 | Silver paste for positive of crystalline silicon solar cell and preparation method thereof |
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