CN106495496B - It is used to prepare the glass powder and preparation method of PERC silicon solar cell back face silver paste - Google Patents
It is used to prepare the glass powder and preparation method of PERC silicon solar cell back face silver paste Download PDFInfo
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- CN106495496B CN106495496B CN201710001995.7A CN201710001995A CN106495496B CN 106495496 B CN106495496 B CN 106495496B CN 201710001995 A CN201710001995 A CN 201710001995A CN 106495496 B CN106495496 B CN 106495496B
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- 239000011521 glass Substances 0.000 title claims abstract description 48
- 239000000843 powder Substances 0.000 title claims abstract description 44
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 42
- 239000004332 silver Substances 0.000 title claims abstract description 42
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 37
- 239000010703 silicon Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 101001073212 Arabidopsis thaliana Peroxidase 33 Proteins 0.000 title claims abstract 9
- 101001123325 Homo sapiens Peroxisome proliferator-activated receptor gamma coactivator 1-beta Proteins 0.000 title claims abstract 9
- 102100028961 Peroxisome proliferator-activated receptor gamma coactivator 1-beta Human genes 0.000 title claims abstract 9
- HYXGAEYDKFCVMU-UHFFFAOYSA-N scandium(III) oxide Inorganic materials O=[Sc]O[Sc]=O HYXGAEYDKFCVMU-UHFFFAOYSA-N 0.000 claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 16
- 229910003069 TeO2 Inorganic materials 0.000 claims description 14
- 229910052681 coesite Inorganic materials 0.000 claims description 14
- 229910052906 cristobalite Inorganic materials 0.000 claims description 14
- 239000000377 silicon dioxide Substances 0.000 claims description 14
- 229910052682 stishovite Inorganic materials 0.000 claims description 14
- 229910052905 tridymite Inorganic materials 0.000 claims description 14
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 239000004615 ingredient Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 239000010431 corundum Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 2
- 230000000171 quenching effect Effects 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- LAJZODKXOMJMPK-UHFFFAOYSA-N tellurium dioxide Chemical compound O=[Te]=O LAJZODKXOMJMPK-UHFFFAOYSA-N 0.000 claims description 2
- 238000002161 passivation Methods 0.000 abstract description 19
- 238000003466 welding Methods 0.000 abstract description 9
- 230000032683 aging Effects 0.000 abstract description 8
- 238000005476 soldering Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000005245 sintering Methods 0.000 description 6
- 238000003483 aging Methods 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
The invention discloses a kind of glass powder and preparation method for being used to prepare PERC silicon solar cell back face silver paste, solve the problems, such as how to ensure that there is high adhesion force on the basis of backside passivation layer is not corroded.Glass powder of the invention uses PbO-SiO2‑TiO2‑B2O3‑TeO2‑Sc2O3Or Bi2O3‑SiO2‑TiO2‑B2O3‑TeO2‑Sc2O3System, by introducing the elements such as Te, Ti, Sc into common electronic glass, effectively reduce the usage amount of glass powder in the silver paste of PERC silicon solar cell back face, weaken the corrosivity to back passivation layer, while there is excellent solderability, soldering resistance, welding pulling force and ageing-resistant performance after being sintered PERC silicon solar cell back face silver paste.
Description
Technical field
The present invention relates to the preparation methods of a kind of glass powder and the glass powder, and in particular to one kind is used to prepare PERC silicon
The glass powder and preparation method thereof of rear surface of solar cell silver paste.
Background technique
Passivated emitter and one of back surface passivation battery (PERC) and the maximum difference of common silicon solar cell are
The thin layers such as its back surface aluminium oxide, silicon nitride are as protection, and back side silver electrode and back side Al-BSF are no longer directly and silion cell
Piece contact, reduces recombination-rate surface, improves the open-circuit voltage of silicon solar cell, finally improve silicon solar cell
Efficiency.
Due to increasing passivation layer in cell backside, the direct contact area of back side silver electrode and silicon cell drops significantly
Low, this will lead to the reduction of the adhesive force between back side silver electrode and silicon cell.If the glass powder in the silver paste of the back side is sintered
Backside passivation layer is corroded in journey, although adhesive force can be improved, since backside passivation layer is destroyed, the effect of silicon solar cell
Rate will be substantially reduced.There is high adhesion force on the basis of ensuring to carry on the back passivation layer and not being destroyed, be PERC silicon solar cell back
The technological difficulties of face silver paste.
Nearly 2 years PERC batteries start at home gradually batch application, compared with common solar battery, battery knot
There is very big difference in structure design, passivation technology, passivation layer structure, silver paste and aluminium paste.Currently, a large amount of PERC battery related patents
Passivation technology is concentrated on, on passivation layer structure with document, and report relevant to PERC cell backside silver paste is less.In published
State's patent has:
1) DuPont Corporation has applied for that entitled " the silver-colored rear electrode and rear-face contact silicon for being used to form passivation emitter are too
The patent of invention (CN103503080) of the method for positive energy battery ", using PbO-Al2O3-SiO2-B2O3-Bi2O3Glass powder separately adds
Particle silver and organic carrier is added to prepare PERC cell backside silver paste.
2) Biyadi Co Ltd applied it is entitled " back passivation back silver paste of solar cell and preparation method thereof,
The patent of invention (CN105374412) of solar battery and preparation method thereof ", using PbO/Bi2O3+B2O3Glass powder, it is another to add
Micro-silver powder, nano-silver powder and organic carrier have prepared PERC cell backside silver paste.
Glass powder used in the above patent and the difference of common batteries back side silver paste are little, and existing can corrosion and passivation layer
And the shortcomings that reducing battery efficiency.
Summary of the invention
The technical problems to be solved by the present invention are: how to ensure to have height attached on the basis of backside passivation layer is not corroded
The problem of putting forth effort, the present invention provides a kind of glass for being used to prepare PERC silicon solar cell back face silver paste to solve the above problems
Glass powder.
The present invention is achieved through the following technical solutions:
A kind of glass powder being used to prepare PERC silicon solar cell back face silver paste, is made of following oxide:
TeO2、Sc2O3、SiO2、TiO2、B2O3And PbO or Bi2O3。
Glass powder of the invention uses PbO-SiO2-TiO2-B2O3-TeO2-Sc2O3Or Bi2O3-SiO2-TiO2-B2O3-
TeO2-Sc2O3System can effectively reduce PERC silicon solar electricity by introducing the elements such as Te, Ti, Sc into common electronic glass
The usage amount of glass powder in the silver paste of the pond back side weakens the corrosivity to back passivation layer, while making PERC silicon solar cell back face
There is excellent solderability, soldering resistance, welding pulling force and ageing-resistant performance after silver paste sintering.
Preferably, the molar percentage of each ingredient of the oxide are as follows:
Within the scope of said ratio, not only it is only capable of effectively reducing glass powder in the silver paste of PERC silicon solar cell back face
Usage amount weakens the corrosivity to back passivation layer, and guaranteeing can with excellent after PERC silicon solar cell back face silver paste is sintered
Weldering property, soldering resistance, welding pulling force and ageing-resistant performance；Meanwhile the effect of glass powder network structure can also be effectively adjusted, make to make
The glass powder obtained is uniform and has lower softening point, and then can be more applicable for the PERC silicon of more sintering temperature and low too
Positive energy battery manufacturing process.
Since in the prior art, the additional amount of usual glass powder is 2% or more of back side silver paste, match through the invention
The additional amount of glass powder of the present invention effectively can be reduced to 1% hereinafter, also, making to carry on the back when preparing back side silver paste by optimal setting
Silver paste sintered welding pulling force in face is not less than 6N, and after 150 DEG C of 30min agings, obviously dropping will not occur in welding pulling force
Low, effect is more significant.
As one of more preferably set-up mode, the molar percentage of each ingredient of the oxide are as follows:
As another more preferably set-up mode, the molar percentage of each ingredient of the oxide are as follows:
A kind of preparation method for the glass powder being used to prepare PERC silicon solar cell back face silver paste, comprising:
The oxide of said ratio is uniformly mixed, is heated to melting at a temperature of 800 DEG C -1300 DEG C, is cooled into solid
State mixture crushes solid mixt after cooling, and being ground to D90 is 3 microns or less.
Preferably, the present invention in glass powder preparation method specifically: oxide is mixed, corundum crucible or platinum are added to
It in golden crucible, then at a temperature of 800 DEG C -1300 DEG C is heated to melting, pours into quenching in the pure water of flowing and form solid mixt,
Solid mixt after cooling is crushed, being ground to D90 is 3 microns or less.
Compared with prior art, the present invention having the following advantages and benefits:
1, pairs of PERC silicon solar cell back passivation layer is organized in glass powder of the invention with very low corrosivity, and
When preparing back side silver paste, the additional amount of glass powder of the present invention is substantially less than other glass powders, further avoids in sintering process
Corrosion of the glass powder to back passivation layer；
2, there is excellent solderability, resistance to after the PERC silicon solar cell back face silver paste sintering of glass powder of the present invention preparation
Weldering property and welding pulling force, meanwhile, have after the PERC silicon solar cell back face silver paste sintering of glass powder preparation of the invention excellent
Different resistance to ag(e)ing；
3, the present invention has the function that adjust glass powder network structure by the optimization of proportion, keeps glass powder obtained equal
One and have lower softening point, be more applicable for the PERC silicon solar cell manufacturing process of more sintering temperature and low.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment, the present invention is made
Further to be described in detail, exemplary embodiment of the invention and its explanation for explaining only the invention, are not intended as to this
The restriction of invention.
Embodiment 1
A kind of glass powder being used to prepare PERC silicon solar cell back face silver paste, the glass powder prepare raw material include with
Lower oxide:
TeO21%；Sc2O30.3%；SiO240%；TiO216%；B2O37.7%；PbO 35%.
In the present embodiment the glass powder the preparation method is as follows:
Above-mentioned various oxides are mixed, corundum crucible or platinum crucible is added, is heated at a temperature of 800 DEG C -1300 DEG C
To melting, pour into the pure water of flowing and be quenched, glass after cooling is crushed, be ground to D90 be 3 microns hereinafter,.
Embodiment 2
The present embodiment and the difference of embodiment 1 are only in that the constitutive molar ratio example of each oxide is different in the present embodiment,
It is specific as follows:
TeO215%；Sc2O30.01%；SiO240%；TiO27.99%；B2O36%；PbO 31%.
Embodiment 3
The present embodiment and the difference of embodiment 1 are only in that the constitutive molar ratio example of each oxide is different in the present embodiment,
It is specific as follows:
TeO211%；Sc2O30.01%；SiO239.99%；TiO28%；B2O311%；PbO 30%.
Embodiment 4
The present embodiment and the difference of embodiment 1 are only in that the constitutive molar ratio example of each oxide is different in the present embodiment,
It is specific as follows:
TeO211.34%；Sc2O30.74%；SiO234.37%；TiO210.85%；B2O37.34%；PbO
35.36%.
Embodiment 5
The present embodiment and the difference of embodiment 1 are only in that the constitutive molar ratio example of each oxide is different in the present embodiment,
It is specific as follows:
TeO214.39%；Sc2O31.21%；SiO220.00%；TiO220.00%；B2O314.40%；PbO
30%.
Embodiment 6
The present embodiment and the difference of embodiment 1 are only in that the constitutive molar ratio example of each oxide is different in the present embodiment,
It is specific as follows:
TeO29.25%；Sc2O31.51%；SiO234.24%；TiO220.00%；B2O35%；PbO 30%.
Embodiment 7
The present embodiment and the difference of embodiment 1 are only in that the constitutive molar ratio example of each oxide is different in the present embodiment,
It is specific as follows:
TeO212.50%；Sc2O31.75%；SiO237.50%；TiO28.00%；B2O310.25%；PbO
30%.
Embodiment 8
The present embodiment and the difference of embodiment 1 are only in that the constitutive molar ratio example of each oxide is different in the present embodiment,
It is specific as follows:
TeO24.34%；Sc2O32.24%；SiO224.87%；TiO216.85%；B2O37.33%；PbO
44.37%.
Embodiment 9
The present embodiment and the difference of embodiment 1 are only in that the constitutive molar ratio example of each oxide is different in the present embodiment,
It is specific as follows:
TeO215.00%；Sc2O33.00%；SiO220.00%；TiO220.00%；B2O312.00%；PbO
30.00%.
Embodiment 10
The present embodiment and the difference of embodiment 1 are only in that the constitutive molar ratio example of each oxide is different in the present embodiment,
It is specific as follows:
TeO28.00%；Sc2O33.00%；SiO230.00%；TiO214.00%；B2O35.00%；PbO
40.00%.
Embodiment 11
A kind of glass powder being used to prepare PERC silicon solar cell back face silver paste, the oxidation including following molar percentages
Object:
TeO22%；Sc2O30.9%；SiO240%；TiO212%；B2O315%；Bi2O330.1%.
In the present embodiment the glass powder the preparation method is as follows:
Above-mentioned various oxides are mixed, corundum crucible or platinum crucible is added, is heated at a temperature of 800 DEG C -1300 DEG C
To melting, pour into the pure water of flowing and be quenched, glass after cooling is crushed, be ground to D90 be 3 microns hereinafter,.
Embodiment 12
The present embodiment and the difference of embodiment 11 be only in that, the constitutive molar ratio example of each oxide is not in the present embodiment
Together, specific as follows:
TeO27%；Sc2O32%；SiO235%；TiO218%；B2O310%；Bi2O328%.
Glass powder made of above-described embodiment is subjected to softening point detection, and prepares PERC according to the additional amount of 0.5wt%
Silicon solar cell back face silver paste, will preparation PERC silicon solar cell back face silver paste be sintered after carry out welding pulling force, resistance to old
The property changed is detected, and testing result is as shown in table 1.
Table 1
PERC silicon solar cell back face silver paste prepared by the present invention is welded compared with institute's column data in CN103503080
Pulling force has significant advantage, as shown in table 2.
Table 2
PERC silicon solar cell back face silver paste prepared by the present invention is welded compared with two import similar product D and H
Pulling force and ageing-resistant performance have significant advantage, as shown in table 3.
Table 3
| Embodiment 1 | Product D | Product H | |
| Softening point temperature/DEG C | 581 | It is unknown | It is unknown |
| Averagely weld pulling force/N | 8.4 | 5.4 | 4.6 |
| Pulling force/N is averagely welded after aging | 6.4 | 0 | 2.5 |
By above-mentioned table 1- table 3 it is found that after the optimum organization matched through the invention, not only it is only capable of reaching reduction use
Amount the effect for reducing corrosion, reduces the advantages of softening point, and can significantly improve average welding pulling force and ageing-resistant effect
Fruit, in the present invention average welding pulling force Jing Guo aging process be obviously not less than other same type products it is unaged before
Pulling force is averagely welded, effect is very significant.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (5)
1. a kind of glass powder for being used to prepare PERC silicon solar cell back face silver paste, which is characterized in that the preparation of the glass powder
Raw material is made of following oxide:
TeO2、Sc2O3、SiO2、TiO2、B2O3And PbO or Bi2O3；
The molar percentage of each ingredient of the oxide are as follows:
2. a kind of glass powder for being used to prepare PERC silicon solar cell back face silver paste according to claim 1, feature
It is, the molar percentage of each ingredient of the oxide are as follows:
3. a kind of glass powder for being used to prepare PERC silicon solar cell back face silver paste according to claim 1, feature
It is, the molar percentage of each ingredient of the oxide are as follows:
4. a kind of preparation method for the glass powder for being used to prepare PERC silicon solar cell back face silver paste characterized by comprising
Oxide according to any one of claims 1 to 3 is uniformly mixed, is heated to melting at a temperature of 800 DEG C -1300 DEG C
Melt, be cooled into solid mixt, solid mixt after cooling is crushed, being ground to D90 is 3 microns or less.
5. a kind of preparation side of glass powder for being used to prepare PERC silicon solar cell back face silver paste according to claim 4
Method, which is characterized in that oxide is mixed, is added in corundum crucible or platinum crucible, then at a temperature of 800 DEG C -1300 DEG C
It is heated to melting, pours into quenching in the pure water of flowing and form solid mixt, solid mixt after cooling is crushed, is ground to
D90 is 3 microns or less.
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| CN109659066B (en) * | 2019-01-10 | 2020-04-17 | 四川东树新材料有限公司 | Front silver paste for preparing PERC silicon solar cell |
| CN110174412B (en) * | 2019-05-21 | 2021-04-27 | 常州聚和新材料股份有限公司 | Method for testing corrosion depth of glass in silver paste on surface of silicon wafer |
| CN111403077B (en) * | 2019-09-04 | 2022-04-19 | 杭州正银电子材料有限公司 | General back electrode silver paste for PERC single-sided double-sided battery and preparation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015050357A (en) * | 2013-09-02 | 2015-03-16 | 日立化成株式会社 | Method for manufacturing silicon substrate having p-type diffusion layer, method for manufacturing solar battery element, and solar battery element |
| CN104692668A (en) * | 2015-02-11 | 2015-06-10 | 西北大学 | Rapid crystallization glass powder for positive electrode paste of solar cell |
| CN104966761A (en) * | 2015-07-08 | 2015-10-07 | 四川银河星源科技有限公司 | Manufacturing method of crystalline silicon solar cell |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015050357A (en) * | 2013-09-02 | 2015-03-16 | 日立化成株式会社 | Method for manufacturing silicon substrate having p-type diffusion layer, method for manufacturing solar battery element, and solar battery element |
| CN104692668A (en) * | 2015-02-11 | 2015-06-10 | 西北大学 | Rapid crystallization glass powder for positive electrode paste of solar cell |
| CN104966761A (en) * | 2015-07-08 | 2015-10-07 | 四川银河星源科技有限公司 | Manufacturing method of crystalline silicon solar cell |
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