CN102231392A - Leadless high viscosity solar energy cell right side electrode silver paste and preparation method thereof - Google Patents
Leadless high viscosity solar energy cell right side electrode silver paste and preparation method thereof Download PDFInfo
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- CN102231392A CN102231392A CN 201110166569 CN201110166569A CN102231392A CN 102231392 A CN102231392 A CN 102231392A CN 201110166569 CN201110166569 CN 201110166569 CN 201110166569 A CN201110166569 A CN 201110166569A CN 102231392 A CN102231392 A CN 102231392A
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- side electrode
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Abstract
The invention discloses a leadless high viscosity solar energy cell right side electrode silver paste. The ingredient of the silver paste is as follows by weight: 85%-90% of functional pastes, 2%-10% of bonding pastes and 5.5%-20% of organic carriers. The functional pastes are conductive silver powder, and the bonding pastes are glass adhesive. The invention also discloses a preparation method of the leadless high viscosity solar energy cell right side electrode silver paste. The solar energy cell right side silver paste provided in the invention contains no lead and is accorded with environmental protection requirement, and forms a contacted conductive electrode with strong adhesion and low ohmic contact on a right side of a solar energy cell. The cell provided in the invention has high photoelectric conversion efficiency and is ideal substitution of a lead-bearing right side silver paste.
Description
Technical field
The present invention relates to used for solar batteries front side silver paste technical field, specifically a kind of unleaded high-viscosity solar cell front side electrode silver plasm and preparation method thereof.
Background technology
The solar battery front side conductive silver paste in area of solar cell mainly as electrode material, along with the development of solar cell manufacturing technology, to the requirement of battery electrode material is: the slurry printing fine lineization; Cost of sizing agent descends.
In addition, the used for solar batteries slurry requires slurry to have good printing performance, has good electrical properties, solderability and silicon chip not to deform after seal burns, and beading up not after firing does not play ash etc. during assembling.It mainly is three kinds of back side aluminium paste, back silver aluminium paste and front side silver pastes that present solar energy electrode seal burns with electric slurry, the primary raw material difference of three kinds of slurries, each is variant for performance, front side silver paste is a sensitive surface as the battery grid usually, and back silver aluminium paste and back side aluminium paste be used in the back of the body field plate be opaco, the aluminium paste preparation has obtained breaking through at home, and product quality satisfies production requirement substantially, and the back silver aluminium paste can be produced at present.But the front side silver paste technology of preparing does not obtain breaking through always, and the product of performance and international manufacturer also has big gap, mainly be the poor adhesive force of existence and silicon, shortcoming such as leaded, and conductivity is relatively poor, causes the contact resistance of electrode bigger.
Summary of the invention
Technical problem to be solved by this invention is at the deficiencies in the prior art, and a kind of unleaded high-viscosity solar cell front side electrode silver plasm and preparation method thereof is provided.
Technical solution of the present invention is as follows:
A kind of unleaded high-viscosity solar cell front side electrode silver plasm, its component and percentage by weight are function phase 85%～90%; Bonding phase 2%～10%; Organic carrier 5.5%～20%; Described function is conduction silver powder mutually, and described bonding is glass glue mutually.
Described unleaded high-viscosity solar cell front side electrode silver plasm, described conduction silver powder are fine globular conduction silver powder, and its particle diameter is 0.2～2 μ m.
Described unleaded high-viscosity solar cell front side electrode silver plasm, described glass glue is bismuth-silex glass system, the component of this system and percentage by weight are: Bi
2O
340～50%; ZnO 20～30%; B
2O
320～25%; Al
2O
30～4%; SiO
20.5～4%; CaO 0～4%; TiO
20～4%; Other has 5～10% additives, and described additive is selected from least a in phosphorus pentachloride and the VIII family metal halide.
Described unleaded high-viscosity solar cell front side electrode silver plasm, described organic carrier is formulated by organic solvent and organic resin, described organic solvent is a kind of in terpinol, turpentine oil, the ethers or its combination, a kind of or combinations thereof by in castor oil and ethyl cellulose, dibutyl phthalate, acrylic resin or the polybutene butyral of described organic resin.
A kind of preparation method of unleaded high-viscosity solar cell front side electrode silver plasm may further comprise the steps:
1, bonding prepares mutually: Bi
2O
340～50%; ZnO 20～30%; B
2O
320～25%; Al
2O
30～4%; SiO
20.5～4%; CaO 0～4%; TiO
20～4%; With load weighted Bi
2O
3, ZnO, B
2O
3, Al
2O
3, SiO
2, CaO, TiO
2Mix and be placed on the Muffle furnace heating, temperature is controlled at 900～1200 ℃, be incubated 30～60 minutes, after the quenching of the use of the glass powder particle after fusing deionized water, add described catalyst (phosphorus pentachloride and described VIII family metal halide), ball milling to 0.5～2 μ m cross 400 mesh sieves and obtain glass binder;
2, the preparation of organic carrier:, be stirred well to fully and make faint yellow transparent organic bond after the dissolving with organic solvent and organic resin Hybrid Heating to 90～120 ℃;
3, the silver powder of 85-90% and 2-10% glass dust adhesive are mixed, be ground to the outward appearance exquisiteness, during no particle, the organic carrier that adds 5.5-20% again stirs.
Solar cell front side silver paste provided by the invention is not leaded, and complete compliance with environmental protection requirements can form the conductive electrode of strong adhesion, low ohm contact resistance in solar cell surface, and cell photoelectric transformation efficiency height is the desirable substituent of leaded silver slurry.
Product satisfies following technical indicator:
Viscosity: 310-330kcps (Brookfield HBT, SC4-14/6R, 10rpm, 25 °); Solid content: 89-92%; Depth-width ratio:＜15/11 μ m; Adhesive force (N) (N/2X2mm2) 〉=70; Fineness:＜7 μ m; Fine rule is differentiated: 60-120 μ m; Solidify back hardness (Shore D): 97, bending strength (ASTMD-790): 52MPa; Bending modulus (ASTMD-790): 2.1MPa; Adhesive shear strength (ASTMD 1002): 170kg/cm2; Side's resistance:＜2m Ω/ /10 μ m; Meet RoHS, contact impedance 50-80 Ω/; Meet quick print technology, unleaded.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
Example 1
Bonding is preparation mutually: press mass fraction, Bi
2O
340～50%; ZnO 20～30%; B
2O
320～25%; Al
2O
30～4%; SiO
20.5～4%; CaO 0～4%; TiO
20～4%; Phosphorus pentachloride 2～5%; VIII family metal halide 3～5%; With load weighted Bi
2O
3, ZnO, B
2O
3, Al
2O
3, SiO
2, CaO, TiO
2Mix and be placed on the Muffle furnace heating, temperature is controlled at 900～1200 ℃, be incubated 30～60 minutes, after the quenching of the use of the glass powder particle after fusing deionized water, add described phosphorus pentachloride and described VIII family metal halide, ball milling to 0.5～2 μ m cross 400 mesh sieves and obtain the environmental protection glass binder;
The preparation of organic carrier: organic carrier is formulated by organic solvent and organic resin, organic solvent is a kind of in terpinol, turpentine oil, the ethers or its combination, a kind of or combinations thereof by in castor oil, ethyl cellulose, dibutyl phthalate, acrylic resin or the polybutene butyral of organic resin.
Press mass fraction, ethyl cellulose 10%, vinyl chloride-vinyl acetate resin 20%, phenolic resins 20%, terpinol 20%, turpentine oil 20% Hybrid Heating to 90～120 ℃ are stirred well to dissolving fully, add 10% methyl single-butyl ether again, be heated to 90～120 ℃, be stirred well to fully and make faint yellow transparent organic carrier after the dissolving;
Front side silver paste manufacture method: 1, with 85%～90% (mass ratio, (the fine globular conduction silver powder of silver powder down together), its particle diameter is 0.2～2 μ m) and the mixing of 2%～10% glass binder, the stirring of silver powder and glass binder, use the V-type powder stirrer, unavailable screw rod mixer is in order to avoid destroy powder.2, in the powder after mixing, add 5.5%～20% organic carrier, in the high viscosity mixer, stir.3, the creme that stirs in the step 2 is put into three-roller and grind, purpose is to open the reunion of glass dust and the dispersion of silver powder.4, will grind scattered creme and in the high viscosity mixer, carry out stirring the second time also deaeration.5, will stirring also, the good slurry of deaeration carries out product inspection and packing.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (5)
1. a unleaded high-viscosity solar cell front side electrode silver plasm is characterized in that, its component and percentage by weight are function phase 85%～90%; Bonding phase 2%～10%; Organic carrier 5.5%～20%; Described function is conduction silver powder mutually, and described bonding is glass glue mutually.
2. unleaded high-viscosity solar cell front side electrode silver plasm according to claim 1 is characterized in that, described conductive silver aluminium powder is a fine globular conduction silver powder, and its particle diameter is 0.2～2 μ m.
3. unleaded high-viscosity solar cell front side electrode silver plasm according to claim 1 is characterized in that described bonding is bismuth-silex glass system mutually, and the component of this system and percentage by weight are: Bi
2O
340～50%; ZnO 20～30%; B
2O
320～25%; Al
2O
30～4%; SiO
20.5～4%; CaO 0～4%; TiO
20～4%; Additive 5～10%, described additive are selected from least a in phosphorus pentachloride and the VIII family metal halide.
4. unleaded high-viscosity solar cell front side electrode silver plasm according to claim 1, it is characterized in that, described organic carrier is formulated by organic solvent and organic resin, described organic solvent is a kind of in terpinol, turpentine oil, the ethers or its combination, a kind of or combinations thereof by in castor oil, ethyl cellulose, dibutyl phthalate, acrylic resin or the polybutene butyral of described organic resin.
5. the preparation method of a unleaded high-viscosity solar cell front side electrode silver plasm is characterized in that, may further comprise the steps:
Bonding is preparation mutually: Bi
2O
340～50%; ZnO 20～30%; B
2O
320～25%; Al
2O
30～4%; SiO
20.5～4%; CaO 0～4%; TiO
20～4%; Phosphorus pentachloride 2～5%; VIII family metal halide 3～5%; With load weighted Bi
2O
3, ZnO, B
2O
3, Al
2O
3, SiO
2, CaO, TiO
2Mix and be placed on the Muffle furnace heating, temperature is controlled at 900～1200 ℃, be incubated 30～60 minutes, after the quenching of the use of the glass powder particle after fusing deionized water, add described phosphorus pentachloride and described VIII family metal halide, ball milling to 0.5～2 μ m cross 400 mesh sieves and obtain glass binder;
The preparation of organic carrier:, be stirred well to fully and make faint yellow transparent organic bond after the dissolving with organic solvent and organic resin Hybrid Heating to 90～120 ℃;
Behind the silver powder and the abundant mutually mixing of 2-10% bonding with 85-90%, the organic carrier that adds 5.5-20% again stirs, and grinds subsequently, and then stirs and deaeration, and check at last encapsulates.
Priority Applications (1)
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| CN 201110166569 CN102231392A (en) | 2011-06-21 | 2011-06-21 | Leadless high viscosity solar energy cell right side electrode silver paste and preparation method thereof |
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|---|---|---|---|
| CN 201110166569 CN102231392A (en) | 2011-06-21 | 2011-06-21 | Leadless high viscosity solar energy cell right side electrode silver paste and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103077764A (en) * | 2013-02-01 | 2013-05-01 | 李春生 | Electrocondution slurry for front side electrode of solar cell |
| CN103390444A (en) * | 2013-07-31 | 2013-11-13 | 广东风华高新科技股份有限公司 | Lead-free electrode slurry used for chip resistor |
| CN103606419A (en) * | 2013-10-26 | 2014-02-26 | 溧阳市东大技术转移中心有限公司 | Preparation method for leadless-silver-conductor slurry |
| CN104871254A (en) * | 2012-12-29 | 2015-08-26 | 第一毛织株式会社 | Composition for forming electrode of solar cell, and electrode manufactured using same |
| CN110246604A (en) * | 2019-04-22 | 2019-09-17 | 苏州市贝特利高分子材料股份有限公司 | A kind of preparation method of hachure high aspect ratio screen printing sizing agent |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101295739A (en) * | 2007-04-26 | 2008-10-29 | 比亚迪股份有限公司 | Conductive slurry for solar battery front side electrode and production method thereof |
| CN101702416A (en) * | 2009-10-29 | 2010-05-05 | 彩虹集团公司 | Method for preparing environment-friendly positive silver paste for silicon-based solar cell |
-
2011
- 2011-06-21 CN CN 201110166569 patent/CN102231392A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101295739A (en) * | 2007-04-26 | 2008-10-29 | 比亚迪股份有限公司 | Conductive slurry for solar battery front side electrode and production method thereof |
| CN101702416A (en) * | 2009-10-29 | 2010-05-05 | 彩虹集团公司 | Method for preparing environment-friendly positive silver paste for silicon-based solar cell |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102760512B (en) * | 2012-05-28 | 2014-06-25 | 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 |
| CN104871254A (en) * | 2012-12-29 | 2015-08-26 | 第一毛织株式会社 | Composition for forming electrode of solar cell, and electrode manufactured using same |
| CN104871254B (en) * | 2012-12-29 | 2017-09-08 | 第一毛织株式会社 | Form the constituent of electrode of solar battery and use its made electrode |
| CN103077764A (en) * | 2013-02-01 | 2013-05-01 | 李春生 | Electrocondution slurry for front side electrode of solar cell |
| CN103077764B (en) * | 2013-02-01 | 2016-05-11 | 李春生 | A kind of conductive slurry for front electrode of solar battery |
| CN103390444A (en) * | 2013-07-31 | 2013-11-13 | 广东风华高新科技股份有限公司 | Lead-free electrode slurry used for chip resistor |
| CN103606419A (en) * | 2013-10-26 | 2014-02-26 | 溧阳市东大技术转移中心有限公司 | Preparation method for leadless-silver-conductor slurry |
| CN103606419B (en) * | 2013-10-26 | 2016-01-06 | 溧阳市东大技术转移中心有限公司 | Lead-free silver conductive paste used preparation method |
| CN110246604A (en) * | 2019-04-22 | 2019-09-17 | 苏州市贝特利高分子材料股份有限公司 | A kind of preparation method of hachure high aspect ratio screen printing sizing agent |
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Application publication date: 20111102 |