CN103824610A - Solar crystalline silicon cell front face silver paste with good sintering character and preparing method thereof - Google Patents
Solar crystalline silicon cell front face silver paste with good sintering character and preparing method thereof Download PDFInfo
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- CN103824610A CN103824610A CN201410063371.4A CN201410063371A CN103824610A CN 103824610 A CN103824610 A CN 103824610A CN 201410063371 A CN201410063371 A CN 201410063371A CN 103824610 A CN103824610 A CN 103824610A
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Abstract
The invention discloses solar crystalline silicon cell front face silver paste with the good sintering character. The solar crystalline silicon cell front face silver paste with the good sintering character comprises, by weight, 70%-90% of silver powder, 2%-8% of glass phases, 0.5%-3% of additives and 10%-30% of organic solvent. The preparing method of the solar crystalline silicon cell front face silver paste with the good sintering character comprises the steps that after the glass phases and the silver powder are thoroughly mixed, a mixture of the additives and the organic solvent is added to the mixed glass phases and the silver powder and mixed through stirring; an obtained mixture is rolled through a three-roll grinding machine to form an even sizing agent; the solar crystalline silicon cell front face silver paste with the good sintering character is prepared. The nanometer-level glass phases with the particle diameter of 0.1 micrometer to 0.7 micrometer are adopted so that the SiN corrosion rate of the product can be improved; the nanometer-level Bi2O3 additives are added to the solar crystalline silicon cell front face silver paste with the good sintering character so that a softening warm area of the glass phases and a sintering window of the product can be widened and the over-sintering phenomenon can be effectively avoided, and therefore the front face silver paste with the better sintering character is provided for preparing a more perfect solar energy crystalline silicon cell.
Description
Technical field
The present invention relates to crystal silicon solar batteries technical field, solar energy crystal silicon battery front side silver paste that particularly a kind of sintering character is superior and preparation method thereof.
Background technology
Solar energy is the inexhaustible regenerative resources of the mankind. is also clean energy resource, do not produce any environmental pollution.In the middle of effective utilization of solar energy; Large sun can solar photovoltaic utilization be research field with fastest developing speed in the last few years, most active, is one of project wherein attracting most attention.For this reason, people develop and have developed solar cell.Making solar cell is mainly take semi-conducting material as basis, and its operation principle is photoelectricity to occur in conversion reaction after utilizing photoelectric material to absorb luminous energy, also different according to its transformation efficiency of the difference of material therefor.Crystal silicon solar batteries is a kind of semiconductor device that solar energy is converted to electric energy, and under solar light irradiation, the inner photogenerated current that produces of crystal silicon solar batteries, exports electric energy by wire.For the electric current of battery is derived, need to make positive and negative electrode on the surface of battery.The electrode fabrication of crystal silicon solar batteries mainly uses screen printing mode at present, by silver paste being printed on to battery positive and negative, through high temperature sintering processing, make silver powder be attached to battery surface and form positive and negative electrode, then the silver electrode forming and welding welding, after being connected with other wires, derive photogenerated current.Current existing crystal silicon solar batteries; the sintering window of front side silver paste is narrow; usually can run in process of production because fluctuation or the temperature range of high temperature sintering temperature arrange the unreasonable substandard product occurring, the conversion efficiency of the solar energy crystal silicon battery that this product is produced is low, do not reach predetermined production requirement.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide the solar energy crystal silicon battery front side silver paste that a kind of sintering character is superior, can improve the SiN corrosion rate of product, the sintering window of product is widened, sintering character is more superior.
Another object of the present invention is to provide the preparation method of the solar energy crystal silicon battery front side silver paste that a kind of sintering character is superior.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions: the solar energy crystal silicon battery front side silver paste that a kind of sintering character is superior, it is characterized in that: described front side silver paste comprises following component, silver powder 70%～90%, glassy phase 2%～8%, additive 0.5%～3%, organic solvent 10%～30%, above each part all by weight percentage.
Preferably, described front side silver paste comprises following component, silver powder 75%～85%, glassy phase 4%～7%, additive 1%～2.5%, organic solvent 15%～26%, and above each part is all by weight percentage.
Preferably, described glassy phase is nanometer glass phase, and its particle diameter is 0.1～0.7 μ m.
Preferably, the particle diameter of described glassy phase is 0.5 μ m, and its shared percentage by weight in front side silver paste is 7%.
Preferably, described additive is nanoscale bismuth oxide (Bi
2o
3).
The preparation method of the solar energy crystal silicon battery front side silver paste that a kind of sintering character is superior, after first glassy phase fully being mixed with silver powder, add again in the mixture of additive and organic solvent and be uniformly mixed, form the slurry of homogeneous through three-roll grinder rolling, make the described superior solar energy crystal silicon battery front side silver paste of a kind of sintering character.
The invention has the beneficial effects as follows: when the present invention uses, solar energy crystal silicon battery front side silver paste superior a kind of sintering character is attached to the surface of solar cell by silk screen printing, again through high temperature sintering processing, in the present invention, adopting particle diameter is 0.1～0.7 μ m nanometer glass phase, can improve the SiN corrosion rate of product, and add therein nano level bismuth oxide (Bi
2o
3) additive, widen the softening warm area of glassy phase, the sintering window of product is widened, and can effectively be avoided burn-off phenomenon, thus, provide the front side silver paste of better sintering character to manufacture more perfectly solar energy crystal silicon battery.
Embodiment
Below preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
The solar energy crystal silicon battery front side silver paste that a kind of sintering character is superior, it is characterized in that: described front side silver paste comprises following component, silver powder 70%～90%, glassy phase 2%～8%, additive 0.5%～3%, organic solvent 10%～30%, above each part all by weight percentage.
Preferably, described front side silver paste comprises following component, silver powder 75%～85%, glassy phase 4%～7%, additive 1%～2.5%, organic solvent 15%～26%, and above each part is all by weight percentage.
Preferably, described glassy phase is nanometer glass phase, and its particle diameter is 0.1～0.7 μ m.
Preferably, the particle diameter of described glassy phase is 0.5 μ m, and its shared percentage by weight in front side silver paste is 7%.
Preferably, described additive is nanoscale bismuth oxide (Bi
2o
3).
The preparation method of the solar energy crystal silicon battery front side silver paste that a kind of sintering character is superior, it is characterized in that, after first glassy phase fully being mixed with silver powder, add again in the mixture of additive and organic solvent and be uniformly mixed, form the slurry of homogeneous through three-roll grinder rolling, make the described superior solar energy crystal silicon battery front side silver paste of a kind of sintering character.
Embodiment mono-:
While preparing the superior solar energy crystal silicon battery front side silver paste of a kind of sintering character of the present invention, the silver powder that is first 70% by percentage by weight and percentage by weight are that 7% glassy phase fully mixes, wherein the particle diameter of glassy phase is 0.5 μ m, adding percentage by weight is to be uniformly mixed in the mixture of 3% additive and 20% organic solvent again, form the slurry of homogeneous through three-roll grinder rolling, make the described superior solar energy crystal silicon battery front side silver paste of a kind of sintering character.
Embodiment bis-:
While preparing the superior solar energy crystal silicon battery front side silver paste of a kind of sintering character of the present invention, the silver powder that is first 75% by percentage by weight and percentage by weight are that 4% glassy phase fully mixes, wherein the particle diameter of glassy phase is 0.5 μ m, adding percentage by weight is to be uniformly mixed in the mixture of 2.5% additive and 18.5% organic solvent again, form the slurry of homogeneous through three-roll grinder rolling, make the described superior solar energy crystal silicon battery front side silver paste of a kind of sintering character.
When the present invention uses, solar energy crystal silicon battery front side silver paste superior a kind of sintering character is attached to the surface of solar cell by silk screen printing, again through high temperature sintering processing, in the present invention, adopting particle diameter is 0.1～0.7 μ m nanometer glass phase, can improve the SiN corrosion rate of product, and add therein nano level bismuth oxide (Bi
2o
3) additive, widen the softening warm area of glassy phase, the sintering window of product is widened, and can effectively be avoided burn-off phenomenon, thus, provide the front side silver paste of better sintering character to manufacture more perfectly solar energy crystal silicon battery.
It is emphasized that, it is more than preferred embodiment of the present invention, not the present invention is done to any type of restriction in appearance, any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all still belong in the scope of technical solution of the present invention.
Claims (6)
1. the solar energy crystal silicon battery front side silver paste that sintering character is superior, it is characterized in that: described front side silver paste comprises following component, silver powder 70%～90%, glassy phase 2%～8%, additive 0.5%～3%, organic solvent 10%～30%, above each part all by weight percentage.
2. the solar energy crystal silicon battery front side silver paste that a kind of sintering character according to claim 1 is superior, it is characterized in that: described front side silver paste comprises following component, silver powder 75%～85%, glassy phase 4%～7%, additive 1%～2.5%, organic solvent 15%～26%, above each part all by weight percentage.
3. the solar energy crystal silicon battery front side silver paste that a kind of sintering character according to claim 1 is superior, is characterized in that: described glassy phase is nanometer glass phase, and its particle diameter is 0.1～0.7 μ m.
4. the solar energy crystal silicon battery front side silver paste superior according to a kind of sintering character described in claim 1 or 3, is characterized in that: the particle diameter of described glassy phase is 0.5 μ m, its shared percentage by weight in front side silver paste is 7%.
5. the solar energy crystal silicon battery front side silver paste that a kind of sintering character according to claim 1 and 2 is superior, is characterized in that: described additive is nanoscale bismuth oxide (Bi
2o
3).
6. the preparation method of the solar energy crystal silicon battery front side silver paste that a sintering character is superior, it is characterized in that, after first glassy phase fully being mixed with silver powder, add again in the mixture of additive and organic solvent and be uniformly mixed, form the slurry of homogeneous through three-roll grinder rolling, make the described superior solar energy crystal silicon battery front side silver paste of a kind of sintering character.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410063371.4A CN103824610A (en) | 2014-02-18 | 2014-02-18 | Solar crystalline silicon cell front face silver paste with good sintering character and preparing method thereof |
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|---|---|---|---|
| CN201410063371.4A CN103824610A (en) | 2014-02-18 | 2014-02-18 | Solar crystalline silicon cell front face silver paste with good sintering character and preparing method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101271928A (en) * | 2008-05-04 | 2008-09-24 | 常州亿晶光电科技有限公司 | High-viscosity solar cell front side silver paste and method for producing the same |
| 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 |
| CN102290120A (en) * | 2011-06-08 | 2011-12-21 | 常州斯威克光伏新材料有限公司 | Silver paste for solar cell and preparation method thereof |
| CN102368391A (en) * | 2011-10-26 | 2012-03-07 | 南昌大学 | High-conductivity lead-free silver paste used for crystalline silicon solar cell and preparation method thereof |
| CN102543252A (en) * | 2012-02-13 | 2012-07-04 | 范琳 | Silicon solar battery front silver paste with wide high-temperature sintering window |
-
2014
- 2014-02-18 CN CN201410063371.4A patent/CN103824610A/en active Pending
Patent Citations (5)
| 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 |
| CN101271928A (en) * | 2008-05-04 | 2008-09-24 | 常州亿晶光电科技有限公司 | High-viscosity solar cell front side silver paste and method for producing the same |
| CN102290120A (en) * | 2011-06-08 | 2011-12-21 | 常州斯威克光伏新材料有限公司 | Silver paste for solar cell and preparation method thereof |
| CN102368391A (en) * | 2011-10-26 | 2012-03-07 | 南昌大学 | High-conductivity lead-free silver paste used for crystalline silicon solar cell and preparation method thereof |
| CN102543252A (en) * | 2012-02-13 | 2012-07-04 | 范琳 | Silicon solar battery front silver paste with wide high-temperature sintering window |
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Application publication date: 20140528 |