CN102408653A - Organic binder for solar battery aluminum paste and preparation method thereof - Google Patents
Organic binder for solar battery aluminum paste and preparation method thereof Download PDFInfo
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- CN102408653A CN102408653A CN2011102110854A CN201110211085A CN102408653A CN 102408653 A CN102408653 A CN 102408653A CN 2011102110854 A CN2011102110854 A CN 2011102110854A CN 201110211085 A CN201110211085 A CN 201110211085A CN 102408653 A CN102408653 A CN 102408653A
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Abstract
The invention discloses an organic binder for solar battery aluminum paste and a preparation method thereof. The organic binder comprises the following components in parts by mass: 3-12 parts of vinyl acetal polymer resin, 88-95 parts of organic solvent, 0-2 parts of wetting dispersing agent and 0-2 parts of defoaming agent. After the organic binder, aluminum powder, glass powder and additives are combined to form the aluminum paste, the aluminum paste can be uniformly coated on the back surface of a silicon wafer and phenomena of net sticking, and large shrinkage rate after drying can be avoided. The organic binder is suitable for a silicon solar battery.
Description
Technical field
The invention belongs to used for solar batteries aluminium paste technical field, relate to a kind of solar cell aluminium paste with organic binder bond and preparation method thereof.
Background technology
During the preparation silicon solar cell, need slurry be printed on the silicon chip back side,, form back of the body electric field electrode, play the effect that reduces contact resistance and improve the cell photoelectric efficiency of conversion through after the drying and sintering.Because aluminium low price, purity are easy to control, and be prone to form good ohmic contact, so aluminium paste is the ideal material of making silicon solar cell back electrode with alloying with silicon.The fine aluminum electrode slurry has following some material impact for the output characteristic of silicon solar cell: open circuit voltage is improved in (1); (2) reduce series resistance; (3) improve the long wave response, effectively reduce back of the body recombination-rate surface.
Aluminium paste is made up of aluminium powder, glass powder, organic binder bond and additive etc.Wherein aluminium powder is a conductive phase; Organic binder bond is as a kind of carrier, and pressed powders such as aluminium powder in the aluminium paste, glass powder, additive are uniformly dispersed, and makes the aluminium paste slurry evenly coat the silicon chip back side during printing; And the consistence of assurance print thickness; After the drying aluminium powder and glass powder are attached on the silicon chip and do not come off, be carbonized behind the sintering, it is bonding with aluminium film and silicon substrate to leave over glass powder.The organic binder bond compsn not only will have good dispersiveness to the pressed powder composition in the aluminium paste preferably; And phenomenons such as sticking net, figure be imperfect, in uneven thickness can not appear in printing process, need make pressed powder have good cohesive strength after the drying.Glass powder is as inorganic adhesive, and softening and fusion makes aluminium lamination and silicon chip that enough strong adhere firmly degree arranged under firing temperature, forms good Ohmic contact.
In the prior art; Problems such as sticking net, crawling is even, dry post-shrinkage ratio is big often appear during the printing of organic binder bond compsn; And the softening agent in its composition adopts adjacent phenyl ester class mostly; So not only can cause environmental pollution to worsen, but also can jeopardize the healthy of direct or indirect exposed population group.In addition, solvent Terpineol 350 smell commonly used is heavier, when volatilization, comes out and can impact production environment.
Summary of the invention
The problem that the present invention solves is to provide a kind of solar cell aluminium paste with organic binder bond and preparation method thereof, and crawling is even during this organic binder bond printing, and environmental protection, is a kind of environmentally friendly organic binder bond.
The present invention realizes through following technical scheme:
A kind of solar cell aluminium paste is used organic binder bond, in mass fraction, comprises 3～12 parts polyvinyl butyral resin, 88～95 parts organic solvent, 0～2 part Ricinate and 0～2 part skimmer.
In mass fraction, comprise 3～10 parts polyvinyl butyral resin, 88～95 parts organic solvent, 1～2 part Ricinate and 1～2 part skimmer.
Described organic solvent is one or more in ethyl cellosolve acetate, ethyl cellosolve, the ethylene glycol butyl ether acetic ester.
Described Ricinate is BYK-163, BYK-P104S, one or more among the BYK-110.
Described skimmer is BYK-141, BYK-052, one or more among the BYK-066N.
A kind of solar cell aluminium paste may further comprise the steps with the preparation method of organic binder bond:
In mass fraction; Behind 3～12 parts polyvinyl butyral resins, 88～95 parts organic solvent, 0～2 part the skimmer thorough mixing of Ricinate and 0～2 part; Heat and be stirred well to the polyvinyl butyral resin and dissolve fully; Filter, obtain the solar cell aluminium paste and use organic binder bond.
Described organic solvent is one or more in ethyl cellosolve acetate, ethyl cellosolve, the ethylene glycol butyl ether acetic ester.
Described Ricinate is BYK-163, BYK-P104S, one or more among the BYK-110.
Described skimmer is BYK-141, BYK-052, one or more among the BYK-066N.
Described heating is also fully stirred and is: heating in water bath to 70～90 ℃ also are incubated 4～6h, and stirring velocity is 100～200r/min.
Compared with prior art, the present invention has following beneficial technical effects:
A kind of solar cell aluminium paste provided by the invention is used organic binder bond; With after aluminium powder, glass powder, additive combination become aluminium paste; Can make the aluminium paste slurry evenly coat the silicon chip back side, not sticking net, the phenomenon that dry post-shrinkage ratio is big are applicable to the use of silicon solar cell.
A kind of solar cell aluminium paste provided by the invention is used organic binder bond, and do not contain the adjacent phenyl ester class that causes environmental pollution healthy, and do not contain Terpineol 350 in the solvent with harm, be a kind of environmentally friendly organic binder bond.
Embodiment
Below in conjunction with concrete embodiment the present invention is done further detailed description, said is to explanation of the present invention rather than qualification.
Embodiment 1
The solar cell aluminium paste is with organic binder bond and preparation thereof:
In mass fraction, each component is specially: 3 parts of polyvinyl butyral resins (Mowital SB 70HH), 95 parts of ethyl cellosolve acetates, 2 parts of skimmer BYK-066N;
By above component proportioning, each component is put in the reaction kettle, use heating in water bath to 70 ℃, constant temperature 4 hours, and use electric blender to stir, and stirring velocity 100r/min, resin all dissolves in reaction kettle, and each component is homogeneous phase.Be cooled to after the room temperature,, obtain the organic adhesive for aluminum paste of silicon solar cells finished product with 400 order silk screen filter.
Embodiment 2
The solar cell aluminium paste is with organic binder bond and preparation thereof:
In mass fraction, each component is specially: 8 parts of polyvinyl butyral resins (Mowital B 60H), 90 parts of ethyl cellosolve acetates, 1 part of Ricinate BYK-P104S, skimmer BYK-0521 part;
By above component proportioning, each component is put in the reaction kettle, use heating in water bath to 80 ℃, constant temperature 5 hours, and use electric blender to stir, and stirring velocity 150r/min, resin all dissolves in reaction kettle, and each component is homogeneous phase.Be cooled to after the room temperature,, obtain the organic adhesive for aluminum paste of silicon solar cells finished product with 400 order silk screen filter.
Embodiment 3
The solar cell aluminium paste is with organic binder bond and preparation thereof:
In mass fraction, each component is specially: 12 parts of polyvinyl butyral resins (S-LEC SV), 48 parts of ethylene glycol butyl ether acetic esters, 40 parts of ethyl cellosolves;
By above component proportioning, each component is put in the reaction kettle, use heating in water bath to 90 ℃, constant temperature 6 hours, and use electric blender to stir, and stirring velocity 200r/min, resin all dissolves in reaction kettle, and each component is homogeneous phase.Be cooled to after the room temperature,, obtain the organic adhesive for aluminum paste of silicon solar cells finished product with 400 order silk screen filter.
Embodiment 4
The solar cell aluminium paste is with organic binder bond and preparation thereof:
In mass fraction, each component is specially: 10 parts of polyvinyl butyral resins (S-LEC SV), 44 parts of ethylene glycol butyl ether acetic esters, 40 parts of ethyl cellosolve acetates, 1 part of Ricinate BYK-163, BYK-1101 part, skimmer BYK-1411 part, BYK-0521 part;
By above component proportioning, each component is put in the reaction kettle, use heating in water bath to 80 ℃, constant temperature 4.5 hours, and use electric blender to stir, and stirring velocity 200r/min, resin all dissolves in reaction kettle, and each component is homogeneous phase.Be cooled to after the room temperature,, obtain the organic adhesive for aluminum paste of silicon solar cells finished product with 400 order silk screen filter.
Embodiment 5
The solar cell aluminium paste is with organic binder bond and preparation thereof:
In mass fraction, each component is specially: 8 parts of polyvinyl butyral resins (Mowital B 60H), 88 parts of ethylene glycol butyl ether acetic esters, 1 part of Ricinate BYK-P104S, skimmer BYK-1411 part;
By above component proportioning, each component is put in the reaction kettle, use heating in water bath to 85 ℃, constant temperature 5.5 hours, and use electric blender to stir, and stirring velocity 200r/min, resin all dissolves in reaction kettle, and each component is homogeneous phase.Be cooled to after the room temperature,, obtain the organic adhesive for aluminum paste of silicon solar cells finished product with 400 order silk screen filter.
Embodiment 6
The solar cell aluminium paste is with organic binder bond and preparation thereof:
In mass fraction, each component is specially: 7 parts of polyvinyl butyral resins (Mowital B 60H), 90 parts of ethylene glycol butyl ether acetic esters, 1 part of Ricinate BYK-110,2 parts of skimmer BYK-052;
By above component proportioning, each component is put in the reaction kettle, use heating in water bath to 80 ℃, constant temperature 5.5 hours, and use electric blender to stir, and stirring velocity 100r/min, resin all dissolves in reaction kettle, and each component is homogeneous phase.Be cooled to after the room temperature,, obtain the organic adhesive for aluminum paste of silicon solar cells finished product with 400 order silk screen filter.
The organic binder bond of above-mentioned preparation, dispose aluminium paste by following quality proportioning:
Glass composition, 0.5-2%; Aluminium powder, 72-78%; Organic binder bond, 20-30%, inorganic additives 0-1%.Wherein glass composition can adopt the quality proportioning of following composition and each composition: Bi
2O
3, 65-75%; SiO
2, 5-10%; B
2O
3, 6-8%; Al
2O
3, 0-2%; ZnO, 8-10%; Inorganic additives comprises NiO, ZrO
2, Al (NO
3), TiO
2In one or more.
Made aluminium paste can make the aluminium paste slurry evenly coat the silicon chip back side in the use of silicon solar cell, not sticking net, the phenomenon that dry post-shrinkage ratio is big.
Claims (10)
1. a solar cell aluminium paste is used organic binder bond, it is characterized in that, in mass fraction, comprises 3～12 parts polyvinyl butyral resin, 88～95 parts organic solvent, 0～2 part Ricinate and 0～2 part skimmer.
2. solar cell aluminium paste as claimed in claim 1 is used organic binder bond, it is characterized in that, in mass fraction, comprises 3～10 parts polyvinyl butyral resin, 88～95 parts organic solvent, 1～2 part Ricinate and 1～2 part skimmer.
3. solar cell aluminium paste as claimed in claim 1 is used organic binder bond, it is characterized in that, described organic solvent is one or more in ethyl cellosolve acetate, ethyl cellosolve, the ethylene glycol butyl ether acetic ester.
4. solar cell aluminium paste as claimed in claim 1 is used organic binder bond, it is characterized in that, described Ricinate is BYK-163, BYK-P104S, one or more among the BYK-110.
5. solar cell aluminium paste as claimed in claim 1 is used organic binder bond, it is characterized in that, described skimmer is BYK-141, BYK-052, one or more among the BYK-066N.
6. a solar cell aluminium paste is characterized in that with the preparation method of organic binder bond, may further comprise the steps:
In mass fraction; Behind 3～12 parts polyvinyl butyral resins, 88～95 parts organic solvent, 0～2 part the skimmer thorough mixing of Ricinate and 0～2 part; Heat and be stirred well to the polyvinyl butyral resin and dissolve fully; Filter, obtain the solar cell aluminium paste and use organic binder bond.
7. solar cell aluminium paste as claimed in claim 6 is characterized in that with the preparation method of organic binder bond described organic solvent is one or more in ethyl cellosolve acetate, ethyl cellosolve, the ethylene glycol butyl ether acetic ester.
8. solar cell aluminium paste as claimed in claim 6 is characterized in that with the preparation method of organic binder bond described Ricinate is BYK-163, BYK-P104S, one or more among the BYK-110.
9. solar cell aluminium paste as claimed in claim 6 is characterized in that with the preparation method of organic binder bond described skimmer is BYK-141, BYK-052, one or more among the BYK-066N.
10. solar cell aluminium paste as claimed in claim 6 is characterized in that with the preparation method of organic binder bond, and described heating is also fully stirred and is: heating in water bath to 70～90 ℃ also are incubated 4～6h, and stirring velocity is 100～200r/min.
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|---|---|---|---|
| CN2011102110854A CN102408653A (en) | 2011-07-26 | 2011-07-26 | Organic binder for solar battery aluminum paste and preparation method thereof |
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| CN2011102110854A CN102408653A (en) | 2011-07-26 | 2011-07-26 | Organic binder for solar battery aluminum paste and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474132A (en) * | 2013-09-16 | 2013-12-25 | 宁波东旭成新材料科技有限公司 | Conducting film for touch screen and manufacturing method thereof |
| CN108164899A (en) * | 2017-12-10 | 2018-06-15 | 长沙无道工业设计有限公司 | A kind of solar cell aluminium paste organic bond and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093577A (en) * | 2010-12-01 | 2011-06-15 | 深圳顺络电子股份有限公司 | Environmental-protection solvent and laminated sheet type component dry-process casting slurry prepared from same |
-
2011
- 2011-07-26 CN CN2011102110854A patent/CN102408653A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102093577A (en) * | 2010-12-01 | 2011-06-15 | 深圳顺络电子股份有限公司 | Environmental-protection solvent and laminated sheet type component dry-process casting slurry prepared from same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474132A (en) * | 2013-09-16 | 2013-12-25 | 宁波东旭成新材料科技有限公司 | Conducting film for touch screen and manufacturing method thereof |
| CN103474132B (en) * | 2013-09-16 | 2015-12-23 | 宁波东旭成新材料科技有限公司 | A kind of conducting film for touch-screen and manufacture method thereof |
| CN108164899A (en) * | 2017-12-10 | 2018-06-15 | 长沙无道工业设计有限公司 | A kind of solar cell aluminium paste organic bond and preparation method thereof |
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Application publication date: 20120411 |