CN106565098A - Method for preparing low melting point glass powder for silver paste - Google Patents
Method for preparing low melting point glass powder for silver paste Download PDFInfo
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- CN106565098A CN106565098A CN201510653734.4A CN201510653734A CN106565098A CN 106565098 A CN106565098 A CN 106565098A CN 201510653734 A CN201510653734 A CN 201510653734A CN 106565098 A CN106565098 A CN 106565098A
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Abstract
The invention discloses front-side electrode silver paste glass powder for improving the efficiency of a crystalline silicon solar cell, and new low melting point glass powder with the softening point of 300 to 500 DEG C is developed, and comprises the following components by weight: 0-90% of Bi2O3, 0-30% of B2O3, 0-50% of SiO2, 0-20% of Al2O3 and 0-20% of ZnO. The crystallization rate of the glass powder can be controlled the by adjusting of the ratio, on the premise of forming of the glass powder, glass transition temperature can be controlled at 300-450 DEG C, and use requirements of high performance silver paste can be met.
Description
Technical field
The present invention relates to crystal silicon solar energy battery front electrode silver slurry glass dust and preparation method thereof, belongs to high-performance solar electric slurry preparing technical field.
Background technology
With the worsening shortages of the fossil energies such as oil, solar energy will become the star's energy in novel energy. and China is just greatly developing solar photoelectric plan, according to the author's market survey, predict that the year two thousand twenty solar photoelectric total capacity is up to the high development of 300MWp. front side silver paste glass dust is one of particularly important raw material in solar module.The important Con trolling index of glass dust has crystallize, vitrification point, the coefficient of expansion, density etc. the invention provides a kind of method of control glass dust crystallize and vitrification point.
The content of the invention
1 it is an object of the invention to provide a kind of high-performance crystal silicon solar energy battery front electrode silver slurry glass dust, reduces the fusing point of glass dust, improves the stability of silver paste.
2. second object of the present invention is to provide the preparation method of above-mentioned glass powder with low melting point.
3. the present invention realizes that process is as follows：
Crystal silicon solar energy battery anode silver paste glass powder with low melting point, its composition and weight percentage are Bi2O30-90%, B2O30-30%, SiO20-50%, Al2O30-20%, ZnO 0-20%.
Above-mentioned crystal silicon solar energy battery anode silver paste glass powder with low melting point, its composition and weight percentage are preferably：Bi2O320-70%, B2O320-30%, SiO220-50%, Al2O310-20%, ZnO 10-20%.
3. above-mentioned crystal silicon solar energy battery anode silver paste glass powder with low melting point, its composition preferably also contain 1-10%V2O5, 1%-10%ZnO.
Above-mentioned crystal silicon solar energy battery anode silver paste glass powder with low melting point, fusing point is at 300-500 degree Celsius.
The particle size range of above-mentioned various raw materials is all 10-100 microns.
The preparation method of above-mentioned glass dust, comprises the steps：
A. by Bi2O3、B2O3、SiO2It is sufficiently mixed uniformly with ZnO.
B. mixed oxide is in 1000-3000 degree Celsius of melting 30-60min.
C. melten glass is poured into into quenching-in water.
D. the glass blocks after quenching are crushed to into 100 mesh or so.
E. coarse glass frit obtained above is ground to into 2-10 microns.
The grinding of coarse glass frit is carried out in organic solvent preferably.Organic solvent includes it being dibutyl phthalate, terpineol, citrate.Compared with aqueous solvent, organic solvent can make the glass dust liquid after ball milling be used directly for slurry, improve dispersibility, simplify processing technology.
Advantages of the present invention and good effect
The conversion efficiency that crystal silicon solar energy battery is obtained using glass dust of the present invention reaches 17-18% (125 × 125 monocrystalline silicon battery).Silver paste rheological characteristic and thixotropy using present invention modulation is good, and monolithic consumption silver paste is few.Glass dust of the present invention can corrode antireflective coating, drop the resistance of low aluminum silicon contact layer, improve battery efficiency.
Specific embodiment
With reference to specific embodiment, the present invention is described further.
It is pure that oxide used by of the invention is chemistry.
Embodiment 1
Five kinds of oxides are weighed, its concrete percentage by weight is Bi2O360%th, B2O335%th, SiO220%th, Al2O310%th, ZnO5%.The above-mentioned oxide for weighing is carried out being sufficiently mixed uniformly again, corundum crucible is positioned over, is covered crucible cover, after half an hour being preheated at 200 DEG C, pour room temperature pure water into, be solidified into cullet at 1300 DEG C after melting 1 hour.Above-mentioned cullet are carried out ball milling again, sieved, dried, form 10-15 μm of glass powder.
Embodiment 2
Five kinds of oxides are weighed, its concrete percentage by weight is Bi2O350%th, B2O310%th, SiO210%th, Al2O320%th, ZnO10%.The above-mentioned oxide for weighing is carried out being sufficiently mixed uniformly again, corundum crucible is positioned over, is covered crucible cover, after half an hour being preheated at 200 DEG C, pour room temperature pure water into, be solidified into cullet at 1300 DEG C after melting 1 hour.Above-mentioned cullet are carried out ball milling again, sieved, dried, form 10-15 μm of glass powder.
Comparative example 1
Five kinds of oxides are weighed, its concrete percentage by weight is Bi2O395%th, B2O31%th, SiO21%th, Al2O32%th, ZnO1%.The above-mentioned oxide for weighing is carried out being sufficiently mixed uniformly again, corundum crucible is positioned over, is covered crucible cover, after half an hour being preheated at 200 DEG C, pour room temperature pure water into, be solidified into cullet at 1300 DEG C after melting 1 hour.Above-mentioned cullet are carried out ball milling again, sieved, dried, form 10-15 μm of glass powder.
The fusion temperature of 1. glass dust of table
Fusion temperature/DEG C
Embodiment 1 380
Embodiment 2 410
Comparative example 1 500
。
Claims (3)
1. the composition of new glass powder with low melting point and weight hundred are than being Bi2O30-90%, B2O30-30%, SiO20-50%, Al2O3
0-20%, ZnO 0-20%.
2. glass powder with low melting point according to claim 1, its composition and weight percentage are the described new low melting point glass of crystal
The composition of glass powder and weight hundred are than being Bi2O320-70%, B2O320-50%, SiO220-80%, Al2O30-20%, ZnO
10-30%.
3. glass powder with low melting point according to claim 1, its composition also contain 1-10%V2O5, 1%-10%ZnO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510653734.4A CN106565098A (en) | 2015-10-12 | 2015-10-12 | Method for preparing low melting point glass powder for silver paste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510653734.4A CN106565098A (en) | 2015-10-12 | 2015-10-12 | Method for preparing low melting point glass powder for silver paste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106565098A true CN106565098A (en) | 2017-04-19 |
Family
ID=58506802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510653734.4A Pending CN106565098A (en) | 2015-10-12 | 2015-10-12 | Method for preparing low melting point glass powder for silver paste |
Country Status (1)
| Country | Link |
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| CN (1) | CN106565098A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111268915A (en) * | 2018-12-04 | 2020-06-12 | 上海银浆科技有限公司 | Bi-component high-contact glass powder for solar front silver paste |
-
2015
- 2015-10-12 CN CN201510653734.4A patent/CN106565098A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111268915A (en) * | 2018-12-04 | 2020-06-12 | 上海银浆科技有限公司 | Bi-component high-contact glass powder for solar front silver paste |
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Application publication date: 20170419 |
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