CN108511109A - Conductive slurry for front electrode of solar battery and preparation method thereof - Google Patents
Conductive slurry for front electrode of solar battery and preparation method thereof Download PDFInfo
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- CN108511109A CN108511109A CN201810168843.0A CN201810168843A CN108511109A CN 108511109 A CN108511109 A CN 108511109A CN 201810168843 A CN201810168843 A CN 201810168843A CN 108511109 A CN108511109 A CN 108511109A
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- 239000002002 slurry Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000000843 powder Substances 0.000 claims abstract description 33
- 239000002904 solvent Substances 0.000 claims abstract description 16
- 239000000654 additive Substances 0.000 claims abstract description 15
- 230000000996 additive effect Effects 0.000 claims abstract description 15
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 14
- 239000005308 flint glass Substances 0.000 claims abstract description 14
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical compound CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 claims description 19
- 239000003085 diluting agent Substances 0.000 claims description 17
- -1 ester alcohols Chemical class 0.000 claims description 15
- 239000004925 Acrylic resin Substances 0.000 claims description 12
- 229920000178 Acrylic resin Polymers 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 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 10
- 239000000203 mixture Substances 0.000 claims description 9
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 8
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 8
- 239000001856 Ethyl cellulose Substances 0.000 claims description 7
- 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 7
- 229920001249 ethyl cellulose Polymers 0.000 claims description 7
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 7
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 5
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 229910052681 coesite Inorganic materials 0.000 claims description 5
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- 229910052906 cristobalite Inorganic materials 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052682 stishovite Inorganic materials 0.000 claims description 5
- 229910052905 tridymite Inorganic materials 0.000 claims description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 5
- VXQBJTKSVGFQOL-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethyl acetate Chemical group CCCCOCCOCCOC(C)=O VXQBJTKSVGFQOL-UHFFFAOYSA-N 0.000 claims description 4
- UGZICOVULPINFH-UHFFFAOYSA-N acetic acid;butanoic acid Chemical compound CC(O)=O.CCCC(O)=O UGZICOVULPINFH-UHFFFAOYSA-N 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims 2
- 150000002148 esters Chemical class 0.000 claims 1
- 238000013082 photovoltaic technology Methods 0.000 abstract description 2
- 229910052709 silver Inorganic materials 0.000 description 10
- 239000004332 silver Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- CGKQZIULZRXRRJ-UHFFFAOYSA-N Butylone Chemical compound CCC(NC)C(=O)C1=CC=C2OCOC2=C1 CGKQZIULZRXRRJ-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005245 sintering Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- NQBXSWAWVZHKBZ-UHFFFAOYSA-N 2-butoxyethyl acetate Chemical compound CCCCOCCOC(C)=O NQBXSWAWVZHKBZ-UHFFFAOYSA-N 0.000 description 2
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000005355 lead glass Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002210 silicon-based material 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
- H01B1/20—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
-
- 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
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Sustainable Development (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Photovoltaic Devices (AREA)
- Conductive Materials (AREA)
Abstract
The present invention relates to photovoltaic technology field, and in particular to a kind of conductive slurry for front electrode of solar battery and preparation method thereof.It is grouped as by the group of following parts by weight：1~4 part of flint glass powder；65~90 parts of ball shape silver powder；2~20 parts of nano-silver powder；2~5 parts of organic carrier；3~6 parts of solvent；0.3~1 part of auxiliary agent；0.5~5 part of inorganic additive.Electrode width can be reduced to 34 36mm by the electrocondution slurry by current 40mm or so, to improve the electrotransformation rate of solar cell.
Description
Technical field
The present invention relates to photovoltaic technology field, and in particular to a kind of conductive slurry for front electrode of solar battery and its system
Preparation Method.
Background technology
Solar cell size is commonly referred to as back side silver paste, back side aluminium paste and the front of crystal silicon solar energy battery
Silver paste.Commonly referred to as back of the body silver, back of the body aluminium and positive silver.Currently, silver paste is mainly used as solar cell in solar cell industry
An important factor for positive backplate, aluminium paste are then used as backplate, they are influence solar cell photoelectric transfer efficiencies, is raw
Produce the crucial auxiliary material of solar battery sheet.
In the 1930s, the U.S. develops conductive silver slurry first, currently, Chinese solar cell conductive silver paste market
Mainly is congratulated Li Shi, the large standing grain in Taiwan and three magnitude large enterprises of South Korea by Dupont, U.S.'s good fortune Lu, Germany and monopolized.With me
The development step of the rise of state's photovoltaic, electronics, automobile industry, slurry is constantly accelerated.Pass through the promotion on Size Technology, silicon materials
The efficiency of the configuration optimization of purity, grid line and bottom plate, solar cell size steps up.
Currently, can use the two kind low cost process for producing crystal silicon solar batteries in enormous quantities is silk-screen printing and electricity
Plating.Both techniques are relatively easy, and equipment is simple.To electroplating technology, need corroding the cell piece surface company for electrode pattern
Continuous plating multiple layers metal, process ration silk-screen printing is complicated and the production cycle is long.Currently, it is mainly used in crystal silicon solar production
Silk screen should brush technology, exactly by electrocondution slurry be stamped on silicon chip through screen mesh and form electrode.
The developing history of front side silver paste, mainly around improving efficiency of solar cell and the problem of cell piece production cost.It carries
High battery efficiency and to reduce cost be conflicting, for example, increasing efficiency needs to use the higher product of silver content, in this way at
Originally will increase.For positive silver electrode, major part producer develops to the direction of the close grid of filament at present, and positive electrode is ensureing
" thin " that will be enough under the premise of bulk resistor is lower be to reduce shading-area, and " close " enough is to collect more current-carrying
Son.Such one is that can increase light-receiving area, improves the collection of electric current, and to improve efficiency, slurry can also be reduced by doing so
Dosage.
Silver paste as solar cell material, it should continually develop the conduction to match with novel solar cell technology path
Slurry, or even common research more suitably battery process.Currently, due to the further update of equipment, electrocondution slurry it is further
Upgrading makes ultra-fine grid line solar cell metallization be increasingly becoming possibility.Thin grid, multiple-grid solar cell technology are set in existing production
The technology of preparing of the close gate polysilicon solar cell of the thin grid of high square resistance is researched and developed on the basis of standby and production technology.
In the preparation process of crystal silicon solar batteries piece, by the way that electrocondution slurry is printed on front side of silicon wafer, dry, sintering
Motor is formed in silicon chip of solar cell afterwards, play the role of conductive and improves cell photoelectric and changes transfer efficient, but after printing
In sintering process, which easily causes to crack because shrinking percentage is excessive, reduces the transformation efficiency of battery, and most direct shadow
The factor of sound is exactly to click width, and therefore, how to reduce electrode width is an important topic.
Invention content
The purpose of the present invention is to solve the above problems, provide a kind of conductive slurry for front electrode of solar battery,
The preparation method of the slurry is provided simultaneously, and the printing performance of the electrocondution slurry is preferable, can be to avoid being opened in sintering process
Split phenomenon.
In order to reach foregoing invention purpose, the present invention uses following technical scheme：
A kind of conductive slurry for front electrode of solar battery is grouped as by the group of following parts by weight：
1~4 part of flint glass powder；
65~90 parts of ball shape silver powder；
2~20 parts of nano-silver powder；
2~5 parts of organic carrier；
3~6 parts of solvent；
0.3~1 part of auxiliary agent；
0.5~5 part of inorganic additive.
Preferably, the flint glass powder is (53~58) by weight ratio:(3~9)：(4~10)：(2~5)：(15~
25) PbO, B2O3、ZnO、Al2O3And SiO2Composition.
Preferably, the grain size of the ball shape silver powder is 0.5~4um, and tap density is more than or equal to 5.0g/cm3。
Preferably, the grain size of the nano-silver powder is less than 90nm, and tap density is more than 1.5g/cm3。
Preferably, the organic carrier is (3~5) by weight ratio:(5~9)：The ethyl cellulose of (3~5) (86~92)
Resin, acrylic resin, acetylbutyrylcellulose and diluent composition.
Preferably, the diluent is butyl carbitol acetate, butyl carbitol, diethyl phthalate, diethyl
One or more of glycol monobutyl ether acetate, terpinol and 12 ester alcohols.
Preferably, the solvent be must alcohol acetate, diethyl phthalate, butyl acetate, butyl
One or more of carbitol, terpinol and 12 ester alcohols.
Preferably, the inorganic additive is Na2O、MgO、TiO2、ZnO、ZrO2One or more of with SrO.
A kind of preparation method of above-mentioned conductive slurry for front electrode of solar battery, includes the following steps：
It is (1~4) by weight ratio:(65~90)：(2~20)：(2~5)：(3~6):(0.3~1)：(0.5~5) contains
Lead glass powder, ball shape silver powder, nano-silver powder, organic carrier, solvent, auxiliary agent and inorganic additive mixing, filter after dispersion, obtain
Conductive slurry for front electrode of solar battery.
Preferably, the organic carrier is prepared as follows：
Celluosic resin and acrylic resin are added in diluent, it is small that 1~3 is kept the temperature under conditions of 70~90 DEG C
When, obtain organic carrier after filtering.
Preferably, the diluent is butyl carbitol acetate, butyl carbitol, diethyl phthalate, diethyl
One or more of glycol monobutyl ether acetate, terpinol and 12 ester alcohols.
Preferably, the weight ratio that diluent is added in the ethyl cellulose resin and acrylic resin is (2~5):(4~
9)：(80~90).
Preferably, the auxiliary agent is dispersant and/or levelling agent.
Compared with prior art, the present invention is by adjusting the weight relationships between organic carrier and auxiliary agent, to have adjusted
The viscosity of the electrocondution slurry makes the electrocondution slurry that there is good printing, positive silver grating line to have good depth-width ratio；Another party
Face since the present invention is using nano-silver powder as neccessary composition, and has adjusted between flint glass powder, ball shape silver powder and nano-silver powder
Weight ratio relationship improves open-circuit voltage and short circuit current, improves slurry to reduce the sintering temperature of the electrocondution slurry
The optoelectronic transformation efficiency of electric conductivity and solar cell.
Compared with prior art, the present invention advantageous effect is：Electrode width 34- has been reduced to by current 40mm or so
36mm。
Specific implementation mode
Explanation is further described to technical scheme of the present invention below by specific embodiment.
If without specified otherwise, the raw material employed in the embodiment of the present invention is raw material commonly used in the art, is implemented
Method employed in example, is the conventional method of this field.
A kind of conductive slurry for front electrode of solar battery is grouped as by the group of following parts by weight：Flint glass powder 1
~4 parts；
65~90 parts of ball shape silver powder；2~20 parts of nano-silver powder；2~5 parts of organic carrier；3~6 parts of solvent；Auxiliary agent 0.3~1
Part；0.5~5 part of inorganic additive.
The flint glass powder is (53~58) by weight ratio:(3~9)：(4~10)：(2~5)：The PbO of (15~25),
B2O3、ZnO、Al2O3And SiO2Composition.
The grain size of the ball shape silver powder is 0.5~4um, and tap density is more than or equal to 5.0g/cm3。
More preferred, the grain size of the nano-silver powder is less than 90nm, and tap density is more than 1.5g/cm3。
The organic carrier is (3~5) by weight ratio:(5~9)：(3~5)：The ethyl cellulose resin of (86~92),
Acrylic resin, acetylbutyrylcellulose and diluent composition.Wherein, the diluent is butyl carbitol acetate, butyl
One or more of carbitol, diethyl phthalate, butyl acetate, terpinol and 12 ester alcohols.
The solvent be must alcohol acetate, diethyl phthalate, butyl acetate, butyl carbitol,
One or more of terpinol and 12 ester alcohols.The inorganic additive is Na2O、MgO、TiO2、ZnO、ZrO2In SrO
It is one or more of.
A kind of preparation method of above-mentioned conductive slurry for front electrode of solar battery, includes the following steps：
It is (1~4) by weight ratio:(65~90)：(2~20)：(2~5)：(3~6):(0.3~1)：(0.5~5) contains
Lead glass powder, ball shape silver powder, nano-silver powder, organic carrier, solvent, auxiliary agent and inorganic additive mixing, filter after dispersion, obtain
Conductive slurry for front electrode of solar battery.
The organic carrier is prepared as follows：Celluosic resin and acrylic resin are added in diluent,
1~3 hour is kept the temperature under conditions of 70~90 DEG C, organic carrier is obtained after filtering.The diluent is butyl carbitol acetic acid
Ester, butyl carbitol, diethyl phthalate, butyl acetate, terpinol and one kind in 12 ester alcohols or
It is several.The weight ratio that diluent is added in the ethyl cellulose resin and acrylic resin is (2~5):(4~9)：(80~
90).The auxiliary agent is dispersant and/or levelling agent.
Embodiment 1：
A kind of conductive slurry for front electrode of solar battery is grouped as (every part of 100g) by the group of following parts by weight：
4 parts of flint glass powder；65 parts of ball shape silver powder；20 parts of nano-silver powder；2 parts of organic carrier；6 parts of solvent；Auxiliary agent 0.3
Part；5 parts of inorganic additive.
Wherein, the flint glass powder is 53 by weight ratio:9：4：5：15 PbO, B2O3、ZnO、Al2O3And SiO2Composition.
The grain size of the ball shape silver powder is 0.5~4um, and tap density is more than or equal to 5.0g/cm3。
The organic carrier is 3 by weight ratio:9：3：92 ethyl cellulose resin, acrylic resin, acetate butyrate are fine
Dimension element and diluent composition.
The solvent be must alcohol acetate, diethyl phthalate, butyl acetate, butyl carbitol,
One or more of terpinol and 12 ester alcohols.
The inorganic additive is Na2O、MgO、TiO2、ZnO、ZrO2One or more of with SrO.
A kind of preparation method of above-mentioned conductive slurry for front electrode of solar battery, includes the following steps：
Flint glass powder, ball shape silver powder, nano-silver powder, organic carrier, solvent, auxiliary agent and inorganic additive are mixed, point
It is filtered after dissipating, obtains conductive slurry for front electrode of solar battery.
The organic carrier is prepared as follows：Celluosic resin and acrylic resin are added in diluent,
1~3 hour is kept the temperature under conditions of 70~90 DEG C, organic carrier is obtained after filtering.
Embodiment 2：
A kind of conductive slurry for front electrode of solar battery is grouped as (every part of 100g) by the group of following parts by weight：
1 part of flint glass powder；90 parts of ball shape silver powder；2 parts of nano-silver powder；5 parts of organic carrier；3 parts of solvent；1 part of auxiliary agent；Nothing
0.5 part of machine additive.
Wherein, the flint glass powder is 58 by weight ratio:3：10：2：25 PbO, B2O3、ZnO、Al2O3And SiO2Group
At.
The grain size of the ball shape silver powder is 0.5~4um, and tap density is more than or equal to 1.5g/cm3。
The organic carrier is 5 by weight ratio:5：5：86 ethyl cellulose resin, acrylic resin, acetate butyrate are fine
Dimension element and diluent composition.
The solvent be must alcohol acetate, diethyl phthalate, butyl acetate, butyl carbitol,
One or more of terpinol and 12 ester alcohols.
The inorganic additive is Na2O、MgO、TiO2、ZnO、ZrO2One or more of with SrO.
A kind of preparation method of above-mentioned conductive slurry for front electrode of solar battery, includes the following steps：
Flint glass powder, ball shape silver powder, nano-silver powder, organic carrier, solvent, auxiliary agent and inorganic additive are mixed, point
It is filtered after dissipating, obtains conductive slurry for front electrode of solar battery.
The organic carrier is prepared as follows：Celluosic resin and acrylic resin are added in diluent,
1~3 hour is kept the temperature under conditions of 70~90 DEG C, organic carrier is obtained after filtering.
It, can be by the sintered electrode width after printing by current 39- by using the electrocondution slurry of the present invention
40mm is reduced to 34-36mm, the reduction of electrode width, to improve the transformation efficiency of battery.Meanwhile leading of preparing of the present invention
Plasma-based material shrinking percentage is moderate, not easy to crack.
The most important key problem in technology of the present invention is exactly to be reduced to the electrode width after printing-sintering by current 39-40mm
34-36mm, in order to reach the technique effect, present invention employs above-mentioned electrocondution slurry proportionings.
Claims (10)
1. a kind of conductive slurry for front electrode of solar battery, which is characterized in that be grouped as by the group of following parts by weight：
1~4 part of flint glass powder；
65~90 parts of ball shape silver powder；
2~20 parts of nano-silver powder；
2~5 parts of organic carrier；
3~6 parts of solvent；
0.3~1 part of auxiliary agent；
0.5~5 part of inorganic additive.
2. conductive slurry for front electrode of solar battery according to claim 1, which is characterized in that the flint glass
Powder is (53~58) by weight ratio:(3~9)：(4~10)：(2~5)：PbO, the B of (15~25)2O3、ZnO、Al2O3And SiO2Group
At.
3. conductive slurry for front electrode of solar battery according to claim 1, which is characterized in that the ball shape silver powder
Grain size be 0.5~4um, tap density be more than or equal to 5.0g/cm3。
4. conductive slurry for front electrode of solar battery according to claim 1, which is characterized in that the nano-silver powder
Grain size be less than 90nm, tap density be more than 1.5g/cm3。
5. conductive slurry for front electrode of solar battery according to claim 1, which is characterized in that the organic carrier
It is (3~5) by weight ratio:(5~9)：(3~5)：Ethyl cellulose resin, acrylic resin, the acetate butyrate of (86~92) are fine
Dimension element and diluent composition.
6. conductive slurry for front electrode of solar battery according to claim 5, which is characterized in that the diluent is
Butyl carbitol acetate, butyl carbitol, diethyl phthalate, butyl acetate, terpinol and 12
One or more of ester alcohol.
7. conductive slurry for front electrode of solar battery according to claim 1, which is characterized in that the solvent is must
In alcohol acetate, diethyl phthalate, butyl acetate, butyl carbitol, terpinol and 12 ester alcohols
It is one or more of.
8. conductive slurry for front electrode of solar battery according to claim 1, which is characterized in that the inorganic addition
Agent is Na2O、MgO、TiO2、ZnO、ZrO2One or more of with SrO.
9. a kind of preparation method of conductive slurry for front electrode of solar battery as described in any of the above-described claim,
It is characterized in that, includes the following steps：
It is (1~4) by weight ratio:(65~90)：(2~20)：(2~5)：(3~6):(0.3~1)：The leaded glass of (0.5~5)
Glass powder, ball shape silver powder, nano-silver powder, organic carrier, solvent, auxiliary agent and inorganic additive mixing, filter after dispersion, obtain the sun
It can battery front side electrode electrocondution slurry.
10. preparation method according to claim 9, which is characterized in that the organic carrier is prepared as follows：
Celluosic resin and acrylic resin are added in diluent, keep the temperature 1~3 hour under conditions of 70~90 DEG C, mistake
Organic carrier is obtained after filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168843.0A CN108511109A (en) | 2018-02-28 | 2018-02-28 | Conductive slurry for front electrode of solar battery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168843.0A CN108511109A (en) | 2018-02-28 | 2018-02-28 | Conductive slurry for front electrode of solar battery and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108511109A true CN108511109A (en) | 2018-09-07 |
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|---|---|---|---|
| CN201810168843.0A Withdrawn CN108511109A (en) | 2018-02-28 | 2018-02-28 | Conductive slurry for front electrode of solar battery and preparation method thereof |
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|---|---|
| CN (1) | CN108511109A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616239A (en) * | 2018-12-25 | 2019-04-12 | 苏州柏特瑞新材料有限公司 | A kind of low cost PERC crystal silicon solar batteries positive silver paste and preparation method thereof |
| CN109659066A (en) * | 2019-01-10 | 2019-04-19 | 四川东树新材料有限公司 | A kind of front side silver paste being used to prepare PERC silicon solar cell |
| CN111378342A (en) * | 2020-03-09 | 2020-07-07 | 广东四维新材料有限公司 | Water-based silver spraying applied to 5G ceramic filter and preparation method thereof |
-
2018
- 2018-02-28 CN CN201810168843.0A patent/CN108511109A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616239A (en) * | 2018-12-25 | 2019-04-12 | 苏州柏特瑞新材料有限公司 | A kind of low cost PERC crystal silicon solar batteries positive silver paste and preparation method thereof |
| CN109659066A (en) * | 2019-01-10 | 2019-04-19 | 四川东树新材料有限公司 | A kind of front side silver paste being used to prepare PERC silicon solar cell |
| CN109659066B (en) * | 2019-01-10 | 2020-04-17 | 四川东树新材料有限公司 | Front silver paste for preparing PERC silicon solar cell |
| CN111378342A (en) * | 2020-03-09 | 2020-07-07 | 广东四维新材料有限公司 | Water-based silver spraying applied to 5G ceramic filter and preparation method thereof |
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Application publication date: 20180907 |