CN107845439A - A kind of silicon solar cell back silver paste and preparation method thereof - Google Patents
A kind of silicon solar cell back silver paste and preparation method thereof Download PDFInfo
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- CN107845439A CN107845439A CN201711067442.8A CN201711067442A CN107845439A CN 107845439 A CN107845439 A CN 107845439A CN 201711067442 A CN201711067442 A CN 201711067442A CN 107845439 A CN107845439 A CN 107845439A
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 20
- 239000004332 silver Substances 0.000 title claims abstract description 20
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 17
- 239000010703 silicon Substances 0.000 title claims abstract description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000011521 glass Substances 0.000 claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 11
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 11
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 11
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 11
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 11
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical compound CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000001856 Ethyl cellulose Substances 0.000 claims abstract description 8
- 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 8
- 229920001249 ethyl cellulose Polymers 0.000 claims abstract description 8
- 235000019325 ethyl cellulose Nutrition 0.000 claims abstract description 8
- 239000004359 castor oil Substances 0.000 claims abstract description 5
- 235000019438 castor oil Nutrition 0.000 claims abstract description 5
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims abstract description 5
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims abstract description 5
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910001948 sodium oxide Inorganic materials 0.000 claims abstract description 5
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 12
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 8
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 6
- 229960005070 ascorbic acid Drugs 0.000 claims description 6
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 6
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 6
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- 239000003002 pH adjusting agent Substances 0.000 claims description 4
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 3
- 101710134784 Agnoprotein Proteins 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 235000000069 L-ascorbic acid Nutrition 0.000 claims description 3
- 239000002211 L-ascorbic acid Substances 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 3
- 235000010323 ascorbic acid Nutrition 0.000 claims description 3
- 239000011668 ascorbic acid Substances 0.000 claims description 3
- 238000000498 ball milling Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 239000000376 reactant Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- RBNWAMSGVWEHFP-UHFFFAOYSA-N trans-p-Menthane-1,8-diol Chemical compound CC(C)(O)C1CCC(C)(O)CC1 RBNWAMSGVWEHFP-UHFFFAOYSA-N 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 5
- 238000000280 densification Methods 0.000 abstract description 4
- 238000007650 screen-printing Methods 0.000 abstract description 4
- 230000006641 stabilisation Effects 0.000 abstract description 4
- 238000011105 stabilization Methods 0.000 abstract description 4
- 239000002270 dispersing agent Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003667 anti-reflective effect Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 239000005331 crown glasses (windows) Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- FAIAAWCVCHQXDN-UHFFFAOYSA-N phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-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
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of 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
- 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)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Dispersion Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Glass Compositions (AREA)
Abstract
A kind of silicon solar cell back silver paste, component include following parts by weight material：75 77 parts of silver powder, 27 35 parts of organic carrier, 0.5 1 parts of 163 dispersants of BYK, 0.5 2 parts of sodium oxide molybdena, 35 parts of lead-free glass powder, 24 parts of diethyl phthalate, modified hydrogenated 0.5 1 parts of castor oil, 0.5 2 parts of ethyl cellulose.The invention provides a kind of silicon solar cell back silver paste and preparation method thereof, the micro-silver powder used currently on the market is substituted with nano-silver powder, the pulp particle of production is smaller, is applicable to the silk-screen printing of bigger mesh number, so as to obtain the higher electrode coating of fine and closely woven degree, because SiO2For silicon-oxy tetrahedron structure, densification, bond energy are big, therefore the stabilization formed, water-resistance are good.The network structure of glass is controlled in certain quantity, the stability of glass can be only achieved optimal.
Description
Technical field
The invention belongs to solar energy electronic technical field, and in particular to a kind of silicon solar cell back silver paste and its system
Preparation Method.
Background technology
Crystal silicon solar energy battery front conductive silver slurry mainly by conducting function phase, inorganic binder, organic carrier and
The three parts original such as additive is formulated.Conductive phase can select the good metal powders of electrical and thermal conductivity performance such as Au Ag Pt Pd
End.Because silver powder has good electrical and thermal conductivity performance, and it is cheap for other noble metals, it is widely used as
The conductive phase of electrocondution slurry；Inorganic binder is glass dust, and it decides that electrocondution slurry is worn to solar battery antireflective film
The adhesion of saturating ability and electrode pair silicon chip, and inorganic binder also plays an important role to ohmic contact resistance.
With the continuous renewal progress of crystal silicon solar energy battery manufacturing technology, cell size technology, it is necessary to which tracking is by new
New change, the new feature of solar battery technology caused by material, new technology application, with the unleaded requirement of electronic product,
Silver paste lead-free technology is also the inexorable trend developed at present；High-performance and low-cost conductive silver paste will turn into competitive new
Generation energy products.
Patent CN102426874 provides a kind of silicon solar cell conductive slurry for front electrode, and slurry includes conduction
Silver powder, organic carrier, adhesive, solvent and auxiliary agent, wherein, the electrocondution slurry also includes additive, and the additive is selected from
One or more in phosphorus trichloride and red phosphorus and tributyl phosphate, the silver powder used in patent is micron order, and glass dust is
Bi2O3-B2O3-SiO2System glass dust or Bi2O3-B2O3- ZnO system glass dust.The invention provides a kind of silicon solar cell
With back silver paste and preparation method thereof, the micro-silver powder used currently on the market, the pulp particle of production are substituted with nano-silver powder
It is smaller, the silk-screen printing of bigger mesh number is applicable to, so as to obtain the higher electrode coating of fine and closely woven degree, while uses Bi2O3、
B2O3、ZnO、SiO2And TiO2To prepare glass dust, because SiO2For silicon-oxy tetrahedron structure, densification, bond energy are big, therefore the glass formed
Glass is stable, and water-resistance is good.The network structure of glass is controlled in certain quantity, the stability of glass can be only achieved most
It is excellent.
The content of the invention
It is an object of the invention to provide a kind of silicon solar cell back silver paste and preparation method thereof, nano-silver powder is used
The micro-silver powder used currently on the market is substituted, the pulp particle of production is smaller, obtains the higher electrode coating of fine and closely woven degree, because
For SiO2Silicon-oxy tetrahedron structure, it is fine and close, bond energy is big, therefore the stabilization formed, water-resistance are good.
In order to achieve the above object, the technical solution adopted by the present invention is：A kind of silicon solar cell back silver paste, bag
Include following parts by weight material：
Wherein, the preparation method of the silver powder is：
30g/L ascorbic acid solution is mixed with carboxymethyl cellulose, controls carboxymethyl cellulose and ascorbic acid
Mass ratio is 0.015-0.02：1, stir 2h at 60 DEG C, after cooling and standings 5h, pH is controlled in 2-3 using pH adjusting agent, added
Hot solution adds 50g/L AgNO to 30 DEG C3Solution, 3min is stirred in 300r/min, reactant is precipitated, filtered, is washed
Dried 30 μm are sieved and produce silver powder afterwards；
Wherein, the organic carrier includes 60% ethyl cellulose resin, 30% butyl carbitol, 10% terpinol；
Wherein, the lead-free glass powder includes the material of following parts by weight：65-70%Bi2O3, 10-15%B2O3, 10-
12%ZnO, 14-18%SiO2, 5-8%TiO2, each material mixing is weighed, grinding, is dried after melting, hardening and obtains glass
Little particle, ball milling obtain glass dust.
The preparation method of this silicon solar cell back silver paste includes：
1) silver powder and lead-free glass powder are prepared；
2) sodium oxide molybdena, silver powder and lead-free glass powder are added in organic carrier, then adds BYK-163 points by weight
Powder, diethyl phthalate, modified hydrogenated castor oil, ethyl cellulose, mixer rotate mixing, rotating speed 600-
800r/min, rolling 5-8 times, silk screen filter obtain back silver paste used for solar batteries.
Preferably, the pH adjusting agent is concentrated ammonia liquor and concentrated nitric acid.
Preferably, the washing methods is washing 3 times, and alcohol is washed 3 times.
The beneficial effects of the invention are as follows：
1. the advantages of substituting the micro-silver powder used currently on the market with nano-silver powder：1. the slurry produced with nano-silver powder
Expect that particle is smaller, the silk-screen printing of bigger mesh number is applicable to, so as to obtain the higher electrode coating of fine and closely woven degree；2. in silver paste
It is middle to substitute micro-silver powder with Nano Silver powder, silver-colored dosage can be reduced, reduces production cost；3. due to nano-silver powder fusing point compared with
Low, obtained silver paste sintering temperature reduces.
2. because SiO2For silicon-oxy tetrahedron structure, densification, bond energy are big, therefore the stabilization formed, water-resistance are good.Glass
Network structure must be in certain quantity, the stability of glass can be only achieved optimal.And boron cash is dissolved in water, therefore boron
The chemical durability of glass that cash is formed is poor, so improving the water resistance of low-melting-point glass, to control the content of boron cash.
Embodiment
With reference to specific embodiment mode, the present invention is described in further detail, to make those skilled in the art join
Book word can be implemented according to this as directed.Obviously, described embodiment is only part of the embodiment of the present invention, rather than entirely
The embodiment in portion.
Embodiment 1：
1) prepared by lead-free glass powder：Weigh each material, 70%Bi2O3, 15%B2O3, 12%ZnO, 18%SiO2, 8%
TiO2, mix, grinding, dried after melting, hardening and obtain glass little particle, ball milling obtains glass dust；
2) prepared by silver powder：30g/L ascorbic acid solution is mixed with carboxymethyl cellulose, control carboxymethyl cellulose and
The mass ratio of ascorbic acid is 0.02：1, stir 2h at 60 DEG C, after cooling and standings 5h, controlled pH using concentrated ammonia liquor and concentrated nitric acid
For system 3, heated solution adds 50g/L AgNO to 30 DEG C3Solution, 3min is stirred in 300r/min, reactant is precipitated, mistake
Filter, wash 3 times, alcohol is washed 3 times, and dried 30 μm are sieved and produce silver powder after washing；
3) material is weighed according to parts by weight：77 parts of silver powder, 35 parts of organic carrier, 1 part of BYK-163 dispersants, sodium oxide molybdena 0.5
Part, 5 parts of lead-free glass powder, 4 parts of diethyl phthalate, 0.5 part of modified hydrogenated castor oil, 2 parts of ethyl cellulose；
Wherein, the organic carrier includes 60% ethyl cellulose resin, 30% butyl carbitol, 10% terpinol；
Sodium oxide molybdena, silver powder and lead-free glass powder are added in organic carrier, BYK-163 is then added by weight and disperses
Agent, diethyl phthalate, modified hydrogenated castor oil, ethyl cellulose, mixer, which rotates, to be mixed, rotating speed 800r/min,
Rolling 8 times, silk screen filter obtain back silver paste used for solar batteries.
Comparative example 1：
Relative to embodiment 1, the silver powder used in comparative example 1 is micron order.
Comparative example 2：
Relative to embodiment 1, crown glass powder adds SiO in comparative example 22。
Embodiment 1, the results of property of the back silver paste used for solar batteries prepared in comparative example 1-2：
Data show that for each performance relative to being had a certain upgrade in comparative example 1-2, this is due to nanometer in embodiment 1
Silver powder substitutes the micro-silver powder used currently on the market, and the pulp particle of production is smaller, is applicable to the screen printing of bigger mesh number
Brush, so as to obtain the higher electrode coating of fine and closely woven degree, while uses Bi2O3、B2O3、ZnO、SiO2And TiO2To prepare glass
Powder, because SiO2For silicon-oxy tetrahedron structure, densification, bond energy are big, therefore the stabilization formed, water-resistance are good.By the net of glass
In certain quantity, the stability of glass can be only achieved optimal for network structure control.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, it is of the invention and unlimited
In specific details and shown here as the example with description.
Claims (4)
1. a kind of silicon solar cell back silver paste, it is characterised in that including following parts by weight material：
Wherein, the preparation method of the silver powder is：
30g/L ascorbic acid solution is mixed with carboxymethyl cellulose, controls the quality of carboxymethyl cellulose and ascorbic acid
Than for 0.015-0.02：1, stir 2h at 60 DEG C, after cooling and standings 5h, controlled pH using pH adjusting agent molten in 2-3, heating
Liquid adds 50g/L AgNO to 30 DEG C3Solution, 3min is stirred in 300r/min, reactant is precipitated, filtered, is done after washing
Dry 30 μm of mistake, which is sieved, produces silver powder；
Wherein, the organic carrier includes 60% ethyl cellulose resin, 30% butyl carbitol, 10% terpinol；
Wherein, the lead-free glass powder includes the material of following parts by weight：65-70%Bi2O3, 10-15%B2O3, 10-12%
ZnO, 14-18%SiO2, 5-8%TiO2, each material mixing is weighed, grinding, is dried after melting, hardening and obtains small of glass
Grain, ball milling obtain glass dust.
A kind of a kind of 2. preparation method of silicon solar cell back silver paste described in claim 1, it is characterised in that bag
Include：
1) silver powder and lead-free glass powder are prepared；
2) sodium oxide molybdena, silver powder and lead-free glass powder are added in organic carrier, then adds BYK-163 by weight and disperse
Agent, diethyl phthalate, modified hydrogenated castor oil, ethyl cellulose, mixer rotate mixing, rotating speed 600-800r/
Min, rolling 5-8 times, silk screen filter obtain back silver paste used for solar batteries.
3. a kind of silicon solar cell back silver paste according to claim 1, it is characterised in that the pH adjusting agent is
Concentrated ammonia liquor and concentrated nitric acid.
4. a kind of silicon solar cell back silver paste according to claim 1, it is characterised in that the washing methods is
Washing 3 times, alcohol is washed 3 times.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711067442.8A CN107845439A (en) | 2017-11-03 | 2017-11-03 | A kind of silicon solar cell back silver paste and preparation method thereof |
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|---|---|---|---|
| CN201711067442.8A CN107845439A (en) | 2017-11-03 | 2017-11-03 | A kind of silicon solar cell back silver paste and preparation method thereof |
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| CN107845439A true CN107845439A (en) | 2018-03-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190136081A1 (en) * | 2017-11-08 | 2019-05-09 | Eastman Kodak Company | Silver and copper nanoparticle composites |
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| CN104923801A (en) * | 2014-03-17 | 2015-09-23 | 北京中科纳通电子技术有限公司 | Method for preparing nanosilver powder in batches |
| CN107052326A (en) * | 2017-02-20 | 2017-08-18 | 江苏瑞德新能源科技有限公司 | Micro silver powder and its preparation method and application |
| CN106887273A (en) * | 2017-03-20 | 2017-06-23 | 北京市合众创能光电技术有限公司 | PERC crystal silicon solar energy battery back silver pastes and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190136081A1 (en) * | 2017-11-08 | 2019-05-09 | Eastman Kodak Company | Silver and copper nanoparticle composites |
| US10851257B2 (en) * | 2017-11-08 | 2020-12-01 | Eastman Kodak Company | Silver and copper nanoparticle composites |
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