CN104445962A - Glass powder for solar high sheet resistance slurry and preparation method of glass powder - Google Patents
Glass powder for solar high sheet resistance slurry and preparation method of glass powder Download PDFInfo
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- CN104445962A CN104445962A CN201410816736.6A CN201410816736A CN104445962A CN 104445962 A CN104445962 A CN 104445962A CN 201410816736 A CN201410816736 A CN 201410816736A CN 104445962 A CN104445962 A CN 104445962A
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- glass powder
- sheet resistance
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C12/00—Powdered glass; Bead compositions
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention discloses glass powder for solar high sheet resistance slurry and a preparation method of the glass powder. The glass powder comprises the following raw materials: 30-80% of TeO2, 0.1-5% of PbO, 1-20% of Bi2O3, 0-6% of SiO2, 1-10% of a surface activated metal oxide, 0-3% of Al2O3, 0-20% of ZnO, 0-2% of ZrO2, 0-4% of R2O, 0-2% of MgO, 0-3% of P2O5 and 0-25% of B2O3, wherein the surface activated metal oxide is at least one of metal oxides containing V, Mo, W, Ta, Hf, Cr or Nb; R2O is at least one of metal oxides containing Li, Na or K; the raw materials are prepared into the glass powder through ball-milling, two-section heating, sudden quenching, drying, wet-method rough grinding, wet-method fine grinding and freeze-drying. The glass powder is appropriate in corrosion velocity, corrosion resistance, flowability, wettability and glass transition temperature, and the functional requirements of high sheet resistance solar battery positive silver slurry on a sintering window are well met.
Description
Technical field
The invention belongs to solar cell size field, be specifically related to a kind of glass powder for sun power paste with high sheet resistance and preparation method thereof.
Background technology
Solar cell is the device by photovoltaic effect, light energy conversion being become electric energy.The radiation of suitable wavelength incident in the P-N junction of semi-conductor is served as produce the right exterior source of energy of hole-electron in this semi-conductor.Due to P-N junction there is potential difference in place, and hole and electronics stride across this knot with contrary direction and move.Electronics moves to cathode contact, and hole moves to cathode contact, thus produce can the externally electric current that transmits electric power of circuit.The electrode contacts of solar cell is very important for the performance of battery.
Solar cell front side silver paste makes the important base mateiral of photovoltaic solar cells, for making the front electrode of crystal silicon solar energy battery.The composition of solar cell front side silver paste is by glass powder, silver powder, organic carrier, inorganic additives, organic additive; Wherein glass powder Main Function be burn insulation silicon nitride anti-reflection film, help to form Ag/Si ohmic contact, sticking power is provided; Silver powder Main Function makes silver powder sintering densification, forms low grid line resistance, the conductive electrode provided; Organic carrier Main Function is wetting, printing, outward appearance, depth-width ratio between powder; Inorganic additives and organic additive are mainly used in the improvement of modification and size performance.
Along with the development of technology, in order to improve efficiency of conversion and reduce surface recombination, each battery manufacturer adopts the shallow junction technology of cell piece one after another.Shallow junction refers to that solar cell P-N junction junction depth is less than 0.3 μm, utilizes shallow junction significantly can reduce the minority carrier recombination speed on solar battery sheet surface, improves the spectral response of short-wave band.But when sintering because P-N junction is very shallow, be easy to burn, this just requires that slurry has wider sintering window and suitable erosion rate, and impact sintering window and erosion rate depend primarily on the characteristic of glass powder in positive silver paste: glass powder will have different erosion rates, resistance to corrosion, mobility, wettability, simultaneously to temperature-insensitive in differing temps interval.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of glass powder for sun power paste with high sheet resistance and preparation method thereof, the functional requirement of high square resistance solar cell positive silver paste to sintering window can be solved very well.
The present invention in order to the technical scheme solving its technical problem and adopt is:
For a glass powder for sun power paste with high sheet resistance, the raw material of this glass powder comprises following component and weight percentage: TeO
2: 30-80%, PbO:0.1-5, Bi
2o
3: 1-20%, SiO
2: 0-6%, surface-active metal oxide compound: 1-10%, Al
2o
3: 0-3%, ZnO:0-20%, ZrO
2: 0-2%, R
2o:0-4%, MgO:0-2%, P
2o
5: 0-3% and B
2o
3: 0-25%; Wherein, surface-active metal oxide compound refers to containing at least one in the metal oxide of V, Mo, W, Ta, Hf, Cr or Nb, R
2o is containing at least one in the metal oxide of Li, Na or K.
It is preferred that also comprise at least one in following material composition: BiF
3: 0-3%, Er
2o
3: 0-2%, La
2o
3: 0-2% and CeO
2: 0-2%.
Say further, the Tg temperature of described glass powder is 250 DEG C-450 DEG C.
The preparation method of the above-mentioned glass powder for sun power paste with high sheet resistance, carries out in the steps below:
One, whole raw material is carried out ball milling, fully to be mixed by raw material and to reduce raw material particle size;
Two, the mixture that step one is obtained is put into heating installation and is adopted two sections of heating:
First paragraph: after directly heating installation inside being warming up to 850 DEG C-1000 DEG C, then the mixture that step one is obtained is put into the molten system of heating installation 80 minutes;
Second segment: be incubated 20-30 minute under the temperature condition of 950 DEG C-1200 DEG C, obtains the glass melt of evenly clarification;
Three, by glass melt quenching in deionized water obtained for step 2, after cooling, take out glass particle, then by glass particle at 60 DEG C-80 DEG C baking oven inner drying 1-5 hour;
Four, the glass particle after oven dry step 3 obtained carries out wet method corase grind: in ball mill, add deionized water and the zirconium ball using diameter to be 10-25mm carries out ball milling, and Ball-milling Time is 1-3 hour;
Five, carry out wet method fine grinding again after being dried by glass powder obtained after step 4 wet method corase grind: in ball mill, add Ball milling auxiliary agent and the zirconium ball using diameter to be 2-3mm carries out ball milling, Ball-milling Time is 1-2 hour;
Six, glass powder solution obtained after the fine grinding of step 5 wet method is carried out the taking-up zirconium ball that sieves, obtain glass powder solution;
Seven, the glass powder solution that step 6 is obtained is put into freeze drying box process 8-10 hour, i.e. the obtained glass powder for sun power paste with high sheet resistance of the present invention.
Wherein, the mixture that step one is obtained described in step 2 is put into heating installation and is referred to: the mixture that step one is obtained puts into platinum crucible, after high-temperature box type furnace interior being warming up to the temperature molten processed of 850 DEG C-1000 DEG C, then platinum crucible is put into high temperature box furnace.
The invention has the beneficial effects as follows: the glass powder that the present invention is used for sun power paste with high sheet resistance has suitable erosion rate, corrosion resistance, mobility, wettability and glass transition temp, particularly there are sufficient mobility and corrodibility when low temperature, and abundant and silicon nitride reaction, sufficiently long high temperature resistant and erosion resistance can be kept during high temperature, this glass powder also has higher specific refractory power and the specific absorption of light, and has obvious characteristic of semiconductor and low base gesture height.The electrical performance characteristics that the slurry using glass powder of the present invention to prepare has lower contact resistance, high pulling force, high filling, wide sintering window and maintains an equal level with external slurry after sintering test.
Embodiment
The proportioning raw materials of the glass powder for sun power paste with high sheet resistance of embodiment: embodiment of the present invention 1-6 refers to following table 1:
Table 1 (unit: weight percent, %):
The preparation method of the glass powder for sun power paste with high sheet resistance of the embodiment of the present invention carries out in the steps below:
One, take each feed composition according to the mass percentage data of embodiment each in table 1, then whole raw material is carried out ball milling, raw material is fully mixed and reduces raw material particle size;
Two, the mixture that step one is obtained is put into heating installation and is adopted two sections of heating:
First paragraph: mixture obtained for step one is put into platinum crucible, after high-temperature box type furnace interior being warming up to the temperature molten processed of 850 DEG C-1000 DEG C, then putting into high temperature box furnace and makes the molten system of described mixture 80 minutes by platinum crucible;
Second segment: be incubated 20-30 minute under the temperature condition of 950 DEG C-1200 DEG C, obtains the glass melt of evenly clarification;
Three, by glass melt quenching in deionized water obtained for step 2, after cooling, take out glass particle, then by glass particle at 60 DEG C-80 DEG C baking oven inner drying 1-5 hour;
Four, the glass particle after oven dry step 3 obtained carries out wet method corase grind: in ball mill, add deionized water and the zirconium ball using diameter to be 10-25mm carries out ball milling, and Ball-milling Time is 1-3 hour;
Five, carry out wet method fine grinding again after being dried by glass powder obtained after step 4 wet method corase grind: in ball mill, add Ball milling auxiliary agent and the zirconium ball using diameter to be 2-3mm carries out ball milling, Ball-milling Time is 1-2 hour;
Six, glass powder solution obtained after the fine grinding of step 5 wet method is carried out the taking-up zirconium ball that sieves, obtain glass powder solution;
Seven, the glass powder solution that step 6 is obtained is put into freeze drying box process 8-10 hour, i.e. the obtained glass powder for sun power paste with high sheet resistance of the present invention.
The performance test of glass powder of the present invention:
The glass powder choosing embodiment 1-3 carries out performance test.The raw material of embodiment 1-3 and preparation method are described above, wherein, in preparation method, embodiment 1-3 all: adopts two sections of intensification, material, with 5 minutes, is directly put into molten system 80 minutes after rising to 950 DEG C by first paragraph intensification, and second segment is incubated 30 minutes at 950 DEG C; In step 3, be 80 DEG C of baking oven inner dryings 5 hours; In step 4, it is the zirconium ball ball milling 3 hours using diameter 20mm; In step 5, be the little zirconium ball adopting diameter 3mm, ball milling 2 hours; In step 7, be put into freeze drying box process 10 hours.
The glass powder performance test of embodiment 1-3 and index refer to following table 2:
The quantitative measurement data of the glass powder of table 2: embodiment 1-3
Glass powder of the present invention has suitable erosion rate, corrosion resistance, mobility, wettability and glass transition temp.
Should be understood that above-described embodiment is only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within claims of the present invention limited range equally after the content of having read the present invention's instruction.
Claims (5)
1. for a glass powder for sun power paste with high sheet resistance, it is characterized in that, the raw material of this glass powder comprises following component and weight percentage: TeO
2: 30-80%, PbO:0.1-5, Bi
2o
3: 1-20%, SiO
2: 0-6%, surface-active metal oxide compound: 1-10%, Al
2o
3: 0-3%, ZnO:0-20%, ZrO
2: 0-2%, R
2o:0-4%, MgO:0-2%, P
2o
5: 0-3% and B
2o
3: 0-25%; Wherein, surface-active metal oxide compound refers to containing at least one in the metal oxide of V, Mo, W, Ta, Hf, Cr or Nb, R
2o is containing at least one in the metal oxide of Li, Na or K.
2., as claimed in claim 1 for the glass powder of sun power paste with high sheet resistance, it is characterized in that, also comprise at least one in following material composition: BiF
3: 0-3%, Er
2o
3: 0-2%, La
2o
3: 0-2% and CeO
2: 0-2%.
3., as claimed in claim 1 for the glass powder of sun power paste with high sheet resistance, it is characterized in that, the Tg temperature of described glass powder is 250 DEG C-450 DEG C.
4., as claimed any one in claims 1 to 3 for a preparation method for the glass powder of sun power paste with high sheet resistance, it is characterized in that, carry out in the steps below:
One, whole raw material is carried out ball milling, fully to be mixed by raw material and to reduce raw material particle size;
Two, the mixture that step one is obtained is put into heating installation and is adopted two sections of heating:
First paragraph: after directly heating installation inside being warming up to 850 DEG C-1000 DEG C, then the mixture that step one is obtained is put into the molten system of heating installation 80 minutes;
Second segment: be incubated 20-30 minute under the temperature condition of 950 DEG C-1200 DEG C, obtains the glass melt of evenly clarification;
Three, by glass melt quenching in deionized water obtained for step 2, after cooling, take out glass particle, then by glass particle at 60 DEG C-80 DEG C baking oven inner drying 1-5 hour;
Four, the glass particle after oven dry step 3 obtained carries out wet method corase grind: in ball mill, add deionized water and the zirconium ball using diameter to be 10-25mm carries out ball milling, and Ball-milling Time is 1-3 hour;
Five, carry out wet method fine grinding again after being dried by glass powder obtained after step 4 wet method corase grind: in ball mill, add Ball milling auxiliary agent and the zirconium ball using diameter to be 2-3mm carries out ball milling, Ball-milling Time is 1-2 hour;
Six, glass powder solution obtained after the fine grinding of step 5 wet method is carried out the taking-up zirconium ball that sieves, obtain glass powder solution;
Seven, the glass powder solution that step 6 is obtained is put into freeze drying box process 8-10 hour, i.e. the obtained glass powder for sun power paste with high sheet resistance of the present invention.
5. as claimed in claim 4 for the preparation method of the glass powder of sun power paste with high sheet resistance, it is characterized in that, the mixture that step one is obtained described in step 2 is put into heating installation and is referred to: the mixture that step one is obtained puts into platinum crucible, after high-temperature box type furnace interior being warming up to the temperature molten processed of 850 DEG C-1000 DEG C, then platinum crucible is put into high temperature box furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410816736.6A CN104445962A (en) | 2014-12-24 | 2014-12-24 | Glass powder for solar high sheet resistance slurry and preparation method of glass powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410816736.6A CN104445962A (en) | 2014-12-24 | 2014-12-24 | Glass powder for solar high sheet resistance slurry and preparation method of glass powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104445962A true CN104445962A (en) | 2015-03-25 |
Family
ID=52892812
Family Applications (1)
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|---|---|---|---|
| CN201410816736.6A Pending CN104445962A (en) | 2014-12-24 | 2014-12-24 | Glass powder for solar high sheet resistance slurry and preparation method of glass powder |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104844004A (en) * | 2015-04-23 | 2015-08-19 | 江苏欧耐尔新型材料有限公司 | Leadless glass powder for solar high-square resistance slurry, and preparation method thereof |
| CN104876448A (en) * | 2015-04-23 | 2015-09-02 | 江苏欧耐尔新型材料有限公司 | Low-lead solar silver paste glass powder and preparation method thereof |
| CN109422463A (en) * | 2017-09-01 | 2019-03-05 | 苏州晶银新材料股份有限公司 | Conductive silver paste microbead glass and preparation method thereof |
| CN110143760A (en) * | 2019-06-20 | 2019-08-20 | 苏州晶银新材料股份有限公司 | A kind of glass frit composition and silver paste and battery containing it |
| CN111302636A (en) * | 2018-12-11 | 2020-06-19 | 苏州晶银新材料股份有限公司 | Glass powder composition, conductive silver paste containing glass powder composition and solar cell |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62119138A (en) * | 1985-09-27 | 1987-05-30 | Ohara Inc | Tellurite glass and its production |
| JPH01138150A (en) * | 1987-11-25 | 1989-05-31 | Ohara Inc | Low-melting glass |
| CN104118992A (en) * | 2014-07-22 | 2014-10-29 | 江苏欧耐尔新型材料有限公司 | Glass powder for solar high-sheet-resistance paste and preparation method thereof |
-
2014
- 2014-12-24 CN CN201410816736.6A patent/CN104445962A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62119138A (en) * | 1985-09-27 | 1987-05-30 | Ohara Inc | Tellurite glass and its production |
| JPH01138150A (en) * | 1987-11-25 | 1989-05-31 | Ohara Inc | Low-melting glass |
| CN104118992A (en) * | 2014-07-22 | 2014-10-29 | 江苏欧耐尔新型材料有限公司 | Glass powder for solar high-sheet-resistance paste and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104844004A (en) * | 2015-04-23 | 2015-08-19 | 江苏欧耐尔新型材料有限公司 | Leadless glass powder for solar high-square resistance slurry, and preparation method thereof |
| CN104876448A (en) * | 2015-04-23 | 2015-09-02 | 江苏欧耐尔新型材料有限公司 | Low-lead solar silver paste glass powder and preparation method thereof |
| CN109422463A (en) * | 2017-09-01 | 2019-03-05 | 苏州晶银新材料股份有限公司 | Conductive silver paste microbead glass and preparation method thereof |
| CN111302636A (en) * | 2018-12-11 | 2020-06-19 | 苏州晶银新材料股份有限公司 | Glass powder composition, conductive silver paste containing glass powder composition and solar cell |
| CN110143760A (en) * | 2019-06-20 | 2019-08-20 | 苏州晶银新材料股份有限公司 | A kind of glass frit composition and silver paste and battery containing it |
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Application publication date: 20150325 |