CN107673601A - A kind of PERC aluminium pastes glass dust and preparation method thereof - Google Patents
A kind of PERC aluminium pastes glass dust and preparation method thereof Download PDFInfo
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- CN107673601A CN107673601A CN201710752319.3A CN201710752319A CN107673601A CN 107673601 A CN107673601 A CN 107673601A CN 201710752319 A CN201710752319 A CN 201710752319A CN 107673601 A CN107673601 A CN 107673601A
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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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/062—Glass compositions containing silica with less than 40% silica by weight
- C03C3/064—Glass compositions containing silica with less than 40% silica by weight containing boron
- C03C3/068—Glass compositions containing silica with less than 40% silica by weight containing boron containing rare earths
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Abstract
The invention discloses a kind of PERC aluminium pastes glass dust, mainly it is made up of the raw material of following weight/mass percentage composition：B2O310~40%, SiO20~10%, ZnO 5~30%, BaO 5~30%, CaO 5~30%, TiO21~10%, V2O51~20%, K2O 1~10%, La2O30.1~1%.The glass dust applies the corrosion that can be reduced in PERC aluminium pastes under aluminium paste high temperature to passivation film, while promotes the alloy of partial contact zones to be formed.The invention also discloses the preparation method of above-mentioned PERC aluminium pastes glass dust.
Description
Technical field
The invention belongs to rear surface of solar cell electrode slurry technical field, and in particular to a kind of PERC aluminium pastes glass dust
And preparation method thereof.
Background technology
Crystal silicon solar PERC battery technologies are to utilize SiNx and Al2O3Passivation layer is formed in cell backside, by laser
Local corrosion passivation layer.The passivation layer can reduce the defects of silicon face, increase the life-span of minority carrier, while increase the back side
Long wave reflecting effect, increase the absorption of incident light.Relative to the solar cell of routine, the Voc and Isc of PERC batteries have bright
Aobvious advantage, electricity conversion are higher.
The main constituents of PERC cell aluminum pastes have aluminium powder, inorganic binder, organic bond and other additives, with
Unlike conventional aluminium paste, only aluminium pasc reaction and contact are formed in regional area after PERC aluminium pastes sintering.Make for PERC aluminium pastes
Required with glass dust：Passivation film is not damaged as far as possible, do not influence battery opens pressure and short stream；Aluminium silicon can be promoted anti-
Should, form alloy and reduce cavity.
CN201510381801 patents give a kind of glass dust that can be applicable in PERC cell aluminum pastes, are designed in patent
By in Bi2O3-ZnO-B2O3-SiO2MgO and CaO is added in system and promotes corrosion of the glass dust to alumina particles surface oxide layer,
Destruction of the glass dust to passivation layer can be hindered by adding BeO, add La2O3The formation of needle-like alusil alloy can be promoted, but it is described special
The lifting degree of unit for electrical property parameters and overall performance is not specifically given in profit.
CN201610535116 patents using component as：Bi2O3：10-20 parts, B2O3：15-25 parts, SiO2：2-4 parts, PbO：
20-70 parts, ZnO：The proportioning glass dust of 1-15 parts is applied in PERC cell aluminum pastes, and prepared aluminium paste is to Damage of Passive Film
Small, BSF layers uniformly and it is fine and close, local filling extent is high, volume production average efficiency has a certain upgrade up to 20.7%, but passes through glass
The lifting of powder optimization efficiency is higher.
It is obviously improved in the relatively conventional battery efficiency of PERC batteries, but also has by back field aluminum paste raising efficiency space
It is very big.Further optimization can effectively reduce destruction of the aluminium paste sintering to passivating film to glass dust, more preferable to play PREC battery efficiencies
Upper advantage.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of PERC aluminium pastes glass dust, and the glass dust is applied in PERC
The corrosion under aluminium paste high temperature to passivation film can be reduced in aluminium paste, while promotes the alloy of partial contact zones to be formed.
The technical problems to be solved by the invention also reside in the preparation method for providing above-mentioned PERC aluminium pastes glass dust, the system
Preparation Method concise in technology, cost are low.
First technical problem to be solved by this invention is achieved through the following technical solutions：A kind of PERC aluminium pastes
With glass dust, mainly it is made up of the raw material of following weight/mass percentage composition：
Preferably, PERC aluminium pastes glass dust provided by the invention, the weight/mass percentage composition of each raw material are：
More preferably, PERC aluminium pastes glass dust provided by the invention, is made up of the raw material of following weight/mass percentage composition：
BaO of the present invention is preferred from BaCO3Or Ba (OH)2；Described CaO is preferred from CaCO3Or Ca (OH)2；
Described K2O is preferred from K2CO3。
From hydroxide and carbonate, can first decompose generation at high temperature has higher active oxide gentle
Body, high activity oxide contribute to the progress of reaction, and gas, which can play mixing effect, caused by decomposition makes system become uniform.
The particle diameter of glass dust of the present invention is 1.5~4.5 μm, and softening point is 650~750 DEG C.
Second technical problem to be solved by this invention is achieved through the following technical solutions：Above-mentioned PERC aluminium
The preparation method of slurry glass dust, comprises the following steps：Each raw material is chosen, melting in Muffle furnace is placed in after mixing must refine liquid, refining
Dried after liquid water quenching, be broken, then through ball milling, drying, that is, PERC aluminium paste glass dust being made.
In the preparation method of the PERC aluminium paste glass dust：
Preferably dry-mixed using V-type batch mixer during mixing, temperature is preferably 900 DEG C~1200 DEG C during melting, and soaking time is excellent
Elect 30~90min as.
Preferably use deionized water during water quenching, medium is deionized water during ball milling, and Ball-milling Time is 20~48h, after ball milling
Glass paste stand after be separated off upper water, then dried in 110~130 DEG C of baking ovens.
Compared with prior art, the invention has the advantages that：
(1) glass dust feature provided by the invention is that chemical stability is good, softening point is high, and thermal coefficient of expansion is low, mobility
It is good；
(2) present invention is with B2O3And SiO2As Network former, glass dust is free of PbO and Bi2O3Component, it can properly increase
The softening point of glass dust, reduce the destruction to passivating film；
(3) BaO plays fluxing action at high temperature in the present invention, reduces the viscosity under glass dust high temperature, improves its flowing
Property, be advantageous to the bonding at interface；
(4) CaO and K in the present invention2O can not only play certain fluxing action, while can also reduce the thermal expansion of system
Coefficient；
(5) V in the present invention2O5And TiO2Component can increase the stabilization of glass network structure, and both materials can be with addition
Aluminum oxide forms eutectic, the pellumina on alumina particles surface can be promoted to fuse into glass ingredient, La2O3Glass can be improved
Refractive index, increase albedo of the system to long wave to a certain extent；
(6) glass dust that pin of the present invention provides is applied in solar PE RC aluminium pastes, small to the corrosiveness of passivating film, heat
The coefficient of expansion more matches with silicon base, can effectively corrode the oxide-film on alumina particles surface, promotes alusil alloy to be formed.
Embodiment
The present invention is given specific description in each of the embodiments described below.These embodiments be all it is illustrative, not
The limitation present invention in any way.It will be understood by those skilled in the art that without departing from the spirit and scope of the invention
The details and form of technical solution of the present invention can be modified or replaced, but these modifications and replacement each fall within the present invention's
In protection domain.
Embodiment 1
The PERC aluminium paste glass dust that the present embodiment provides, is made up of the raw material of following weight/mass percentage composition：
The preparation method of the PERC aluminium paste glass dust, comprises the following steps：Each raw material is chosen, Muffle furnace is placed in after mixing
Middle melting must refine liquid, dried after refining liquid water quenching, be broken, then through ball milling, drying, that is, PERC aluminium paste glass dust be made.
Dry-mixed using V-type batch mixer when wherein mixing, temperature is 900 DEG C~1200 DEG C during melting, soaking time is 30~
90min。
Use deionized water during water quenching, medium is deionized water during ball milling, and Ball-milling Time is 20~48h, the glass after ball milling
Glass slurry is separated off upper water after standing, and is then dried in 110~130 DEG C of baking ovens.
Embodiment 2
The PERC aluminium paste glass dust that the present embodiment provides, is made up of the raw material of following weight/mass percentage composition：
The preparation method reference implementation example 1 of the PERC aluminium paste glass dust.
Embodiment 3
The PERC aluminium paste glass dust that the present embodiment provides, is made up of the raw material of following weight/mass percentage composition：
The preparation method reference implementation example 1 of the PERC aluminium paste glass dust.
Embodiment 4
The PERC aluminium paste glass dust that the present embodiment provides, is made up of the raw material of following weight/mass percentage composition：
The preparation method reference implementation example 1 of the PERC aluminium paste glass dust.
Embodiment 5
The PERC aluminium paste glass dust that the present embodiment provides, is made up of the raw material of following weight/mass percentage composition：
The preparation method reference implementation example 1 of the PERC aluminium paste glass dust.
Embodiment 6
The PERC aluminium paste glass dust that the present embodiment provides, is made up of the raw material of following weight/mass percentage composition：
The preparation method reference implementation example 1 of the PERC aluminium paste glass dust.
Embodiment 7
The PERC aluminium paste glass dust that the present embodiment provides, is made up of the raw material of following weight/mass percentage composition：
The preparation method reference implementation example 1 of the PERC aluminium paste glass dust.
Comparative example 1
The PERC aluminium paste glass dust that the present embodiment provides, is made up of the raw material of following weight/mass percentage composition：
The preparation method reference implementation example 1 of the PERC aluminium paste glass dust.
Formula in embodiment 1-7 and comparative example 1 is as shown in Table 1 below.
Formula in the embodiment 1-7 of table 1 and comparative example
Performance of the glass dust of embodiment 8 in aluminium paste
By the glass dust in aluminium powder, 1~embodiment of comparative example 1-7, adhesive (acrylic resin, ethyl cellulose resin, fourth
Base carbitol, alcohol ester 12, terpinol etc.), additive (organic dispersing agent, Al alloy powder etc.) mixing after prepare aluminium paste, print
Sintered in PERC cell backsides.
Sintering furnace model Despatch, 760~780 DEG C of true peak temperature.The method of testing of filling rate is：Go power down
The aluminium lamination on pond piece surface, calculate alloy area and entirely opening the accounting of diaphragm area.
The performance parameter of the cell piece prepared using embodiment 1-7 and comparative example 1 is as shown in Table 2 below.
The performance parameter for the cell piece that table 2 is prepared using embodiment 1-7 and comparative example 1
| Filling rate | Voc/mV | Isc/mA | |
| Comparative example 1 | 40% | 660.7 | 9.718 |
| Embodiment 1 | 72% | 661.5 | 9.755 |
| Embodiment 2 | 70% | 661.8 | 9.744 |
| Embodiment 3 | 76% | 662.2 | 9.759 |
| Embodiment 4 | 75% | 662.4 | 9.755 |
| Embodiment 5 | 78% | 662.5 | 9.760 |
| Embodiment 6 | 74% | 662.0 | 9.760 |
| Embodiment 7 | 73% | 661.7 | 9.748 |
With the Comparative result of comparative example 1, the filling extent after the glass dust of embodiment 1~7 sinters to aluminium paste has larger lifting,
And Voc and Isc lifting is also notable on unit for electrical property parameters.Glass dust one side softening point in 1-7 of the embodiment of the present invention is high,
The time that corrosion failure occurs after melting is short；It is not easy to have an effect with passivating film in another aspect component, further reduces pair
The destruction of passivating film.So passivation layer, which can play, preferably suppresses Carrier recombination, and that improves PERC batteries opens pressure and short stream.
Embodiments above is served only for that the invention will be further described, does not represent the limit to the scope of the present invention
System.Some nonessential modifications and adjustment that other people make according to the present invention still fall within protection scope of the present invention.
Claims (8)
- A kind of 1. PERC aluminium pastes glass dust, it is characterized in that being mainly made up of the raw material of following weight/mass percentage composition：
- 2. PERC aluminium pastes glass dust according to claim 1, it is characterized in that the weight/mass percentage composition of each raw material is：
- 3. PERC aluminium pastes glass dust according to claim 2, it is characterized in that the weight/mass percentage composition of each raw material is：
- 4. the PERC aluminium paste glass dust according to claim any one of 1-3, it is characterized in that：Described BaO comes from BaCO3 Or Ba (OH)2；Described CaO comes from CaCO3Or Ca (OH)2；Described K2O comes from K2CO3。
- 5. the PERC aluminium paste glass dust according to claim any one of 1-3, it is characterized in that：The particle diameter of the glass dust is 1.5~4.5 μm, softening point is 650~750 DEG C.
- 6. the preparation method of the PERC aluminium paste glass dust according to claim any one of 1-3, it is characterized in that including following Step：Each raw material is chosen, melting in Muffle furnace is placed in after mixing must refine liquid, dried after refining liquid water quenching, be broken, then through ball milling, baking It is dry, that is, PERC aluminium paste glass dust is made.
- 7. the preparation method of PERC aluminium pastes glass dust according to claim 6, it is characterized in that：Mixed during mixing using V-type Material machine is dry-mixed, and temperature is 900 DEG C~1200 DEG C during melting, and soaking time is 30~90min.
- 8. the preparation method of PERC aluminium pastes glass dust according to claim 6, it is characterized in that：Deionization is used during water quenching Water, medium is deionized water during ball milling, and Ball-milling Time is 20~48h, and the glass paste after ball milling is separated off upper strata after standing Water, then dried in 110~130 DEG C of baking ovens.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108793756A (en) * | 2018-06-22 | 2018-11-13 | 贵州佰博新材料科技有限公司 | A kind of glass powder and preparation method thereof for Fe-Si-Al magnetic core insulating wrapped |
| CN110423012A (en) * | 2019-08-09 | 2019-11-08 | 江苏国瓷泓源光电科技有限公司 | A kind of glass powder and preparation method for PERC aluminium paste |
| CN110510883A (en) * | 2019-08-16 | 2019-11-29 | 西北大学 | A kind of vanadium base lead-free glass powder and its preparation method and application |
| CN112159111A (en) * | 2020-08-28 | 2021-01-01 | 江苏国瓷泓源光电科技有限公司 | Lead-free and bismuth-free glass powder for PERC solar cell aluminum paste and preparation method thereof |
| CN112435774A (en) * | 2020-10-21 | 2021-03-02 | 中国电子科技集团公司第十三研究所 | Copper conductor slurry suitable for ceramic packaging shell and preparation method thereof |
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| CN103298759A (en) * | 2011-01-13 | 2013-09-11 | 中央硝子株式会社 | Conductive paste and solar battery cell using said conductive paste |
| CN106746686A (en) * | 2017-01-18 | 2017-05-31 | 广州市儒兴科技开发有限公司 | A kind of high temperature resistant aluminium paste glass dust and preparation method thereof |
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Patent Citations (2)
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| CN103298759A (en) * | 2011-01-13 | 2013-09-11 | 中央硝子株式会社 | Conductive paste and solar battery cell using said conductive paste |
| CN106746686A (en) * | 2017-01-18 | 2017-05-31 | 广州市儒兴科技开发有限公司 | A kind of high temperature resistant aluminium paste glass dust and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108793756A (en) * | 2018-06-22 | 2018-11-13 | 贵州佰博新材料科技有限公司 | A kind of glass powder and preparation method thereof for Fe-Si-Al magnetic core insulating wrapped |
| CN108793756B (en) * | 2018-06-22 | 2021-12-03 | 贵州佰博新材料科技有限公司 | Glass powder for insulating and coating iron-silicon-aluminum magnetic powder core and preparation method thereof |
| CN110423012A (en) * | 2019-08-09 | 2019-11-08 | 江苏国瓷泓源光电科技有限公司 | A kind of glass powder and preparation method for PERC aluminium paste |
| CN110423012B (en) * | 2019-08-09 | 2021-12-24 | 江苏国瓷泓源光电科技有限公司 | Glass powder for PERC aluminum paste and preparation method thereof |
| CN110510883A (en) * | 2019-08-16 | 2019-11-29 | 西北大学 | A kind of vanadium base lead-free glass powder and its preparation method and application |
| CN112159111A (en) * | 2020-08-28 | 2021-01-01 | 江苏国瓷泓源光电科技有限公司 | Lead-free and bismuth-free glass powder for PERC solar cell aluminum paste and preparation method thereof |
| CN112435774A (en) * | 2020-10-21 | 2021-03-02 | 中国电子科技集团公司第十三研究所 | Copper conductor slurry suitable for ceramic packaging shell and preparation method thereof |
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