CN107591218A - Full Al-BSF crystal silicon solar battery back face silver paste, preparation method and the usage - Google Patents
Full Al-BSF crystal silicon solar battery back face silver paste, preparation method and the usage Download PDFInfo
- Publication number
- CN107591218A CN107591218A CN201710804906.2A CN201710804906A CN107591218A CN 107591218 A CN107591218 A CN 107591218A CN 201710804906 A CN201710804906 A CN 201710804906A CN 107591218 A CN107591218 A CN 107591218A
- Authority
- CN
- China
- Prior art keywords
- silver paste
- full
- crystal silicon
- silicon solar
- bsf
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a kind of full Al-BSF crystal silicon solar battery back face silver paste, preparation method and the usage, the silver paste is mainly made up of 10 20 parts of ball shape silver powders, 40 60 parts of flake silver powders, 36 parts of lead-free glass powders, 14 parts of aerdentalloy barriers, 20 30 parts of organic carriers and 0.2 0.5 parts of processing aids；Its preparation process is：By each material of formulation weight number precise in container, it is well mixed in planetary centrifugation homogenizer, then again on three-roll grinder below grinding distribution to 15 μm of fineness, produces first.The slurry can be used for making back electrode of solar cell, first after silicon chip back side printing aluminium paste makes full Al-BSF, republish the back side silver paste.The silver paste has good welding performance and high photoelectric transformation efficiency.
Description
Technical field
The present invention relates to a kind of full Al-BSF crystal silicon solar energy battery back side silver paste and preparation method thereof, particularly belong to
Solar cell manufacture material technical field.
Background technology
With fossil energy（Oil, coal, natural gas etc.）Exhaustive exploitation and consumption, lack of energy crisis and greenhouse effect
Getting worse is answered, forces the mankind to be badly in need of seeking alternative new cleaning fuel.In the following very long time, the sun will turn into
Effective supplier of mankind's clean energy resource.It was predicted that 20% will be occupied in whole mankind's energy resource structure to the year two thousand forty solar energy
Ratio, and the ratio was up to 60% by 2100.Wherein, solar radiation is directly converted to electric energy by solar power generation, is institute
Have in clean energy resource it is minimum to solar energy conversion links, utilize most direct mode.
Main solar cell is crystal silicon solar energy battery at present, and from technology maturity, photoelectric transformation efficiency and
Raw material sources consider that the object of giving priority to of photovoltaic solar cell will be silicon systems solar energy in a very long time from now on
Battery.But because crystal silicon solar energy battery is higher than the cost of conventional electric power generation, it is promoted installation application and receive certain limit
System, it can not still turn into main stream within following a period of time.Therefore the opto-electronic conversion of solar cell how is further improved
Efficiency turns into the main contents of crystal silicon solar energy battery research to reduce the cost of solar power generation.
Al-BSF（BSF）It is the typical back surface passivation structure that modern crystals silicon solar cell generally uses, passes through
Development for many years, the production technology of Al-BSF have progressively tended to ripe, stably, and every research to Al-BSF is also increasingly deepened,
These all show that Al-BSF still will be widely used in crystal silicon solar energy battery within significant period of time from now on.
However, in conventional batteries using common back side silver paste, due to the migration of silver ion, silver-colored aluminium phase counterdiffusion is tight
Weight, deteriorated weldability is not only resulted in, and make it that back side silver paste region is invalid recombination region, reduce the collection of minority carrier
Rate so that open-circuit voltage reduces, and ultimately results in the photoelectric transformation efficiency of battery and reduces.Therefore, if effectively preventing silver-colored aluminium mutual
Aerdentalloy is diffuseed to form, welding performance can not only be improved, and causes back side silver paste carrying on the back aluminum layer, is carrying on the back silver-colored region shape
Into BSF layers, back side silver paste and the contact area of aluminium paste can be increased, so as to improve the open circuit electricity of prepared solar cell
Pressure, reduces silver-colored aluminium overlap resistance Rs, effectively improves the photoelectric transformation efficiency of battery.
The content of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, there is provided a kind of full Al-BSF crystal silicon solar battery back face silver
Slurry, its is unleaded, without cadmium, without thallium, the cell piece excellent performance for utilizing it to prepare, electricity conversion is high.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of full Al-BSF crystal silicon solar
Cell backside silver paste, the slurry are made up of each component of following parts by weight：
Ball shape silver powder 10-20%
Flake silver powder 40-60%
Glass dust 3-6%
Aerdentalloy barrier 1-4%
Organic carrier 20-30%
Processing aid 0.2-0.5%
Wherein, described ball shape silver powder, 0.5-2.0 μm of particle mean size, D50For 0.9-1.6 μm, tap density 4.5-6.5g/m3；
2.5-5.0 μm described of flake silver powder particle mean size, D50For 3.1-3.8 μm, tap density 4.0-6.0g/m3；
Described glass dust is crown glass, softening point 700-750oC, 3.5-6.5 μm of particle mean size；
Described aerdentalloy barrier is calcium compound；
Described processing aid is wetting agent, dispersant, levelling agent and adhesion promoter.
D50Also known as average grain diameter or meso-position radius, D represent the diameter of powder granule, D50Represent accumulative diameter at 50% point（Or
50% is claimed to pass through particle diameter）.
The one kind of the calcium compound in calcium carbonate, calcium acetate, calcium oxalate, calcium dimethacrylate.
The wetting agent is Tego Wet KL 245, one kind in dispersant SN-5040, BYK-110 or BYK-111,
Levelling agent is BYK-331, and the adhesion promoter is organo-rhodium compounds dimerization rhodium acetate.
The organic carrier is made up of the raw material of following parts by weight：
Terpinol 10-20%；
Butyl carbitol 20-30%；
Butyl carbitol acetate 20-30%；
Tributyl 2-acetylcitrate 10-20%；
Dioctyl phthalate 5-10%；
Ethyl cellulose 2-5%；
Cellulose acetate butyrate 2-4%；
Acrylic resin 1-3%；
Polyimide resin 2-4%；
Wherein, terpinol, butyl carbitol, butyl carbitol acetate, tributyl 2-acetylcitrate, dioctyl phthalate
For liquid flux；Ethyl cellulose, cellulose acetate butyrate, acrylic resin, polyimide resin are polymer solids powder
End.
Present invention also offers a kind of preparation method of full Al-BSF crystal silicon solar battery back face silver paste, including it is following
Step：
Step 1）：Prepare organic carrier
Weight percent is terpinol 10-20%；Butyl carbitol 20-30%；Butyl carbitol acetate 20-30%；Acetyl lemon
Lemon acid tributyl 10-20%；Dioctyl phthalate 5-10%；Ethyl cellulose 2-5%；Cellulose acetate butyrate 2-4%；Third
Olefin(e) acid resin 1-3%；Polyimide resin 2-4% weighs liquid flux and polymer solids powder respectively, by solid powder therein
End is added in liquid flux, and then heating stirring after resin is completely dissolved, is used in temperature 75-85oC Water Tank with Temp.-controlled
250-350 eye mesh screens are sieved, and organic carrier slurry is obtained after sieving, and cooling is preserved, remained standby；
Step 2）：The preparation of back side silver paste
Weight percent weighs ball shape silver powder 10-20%；Flake silver powder 40-60%；Glass dust 3-6%；Aerdentalloy barrier 1-
4%；Organic carrier 20-30%；Processing aid 0.2-0.5%；Each material is placed in container, is first uniformly mixed it, is then ground again
Mill is dispersed to below 15 μm of fineness, is produced suitable for full Al-BSF crystal silicon solar energy battery back side silver paste.
To further facilitate manufacture, in step 2）In uniformly mixing when, using it is planetary centrifugation homogenizer mixed
Close；It is ground during grinding using three-roll grinder.
Present invention also offers a kind of purposes of full Al-BSF crystal silicon solar battery back face silver paste, it is used to make too
Positive energy battery back electrode, first after silicon chip back side printing aluminium paste makes full Al-BSF, republish the back side silver paste.
Compared with prior art, beneficial effects of the present invention are：
1）It is complete by the crystal silicon solar energy battery that inventive formulation is obtained with back side silver paste without harmful elements such as lead, cadmium, thalliums
Meet environmental requirement entirely；
2）Product of the present invention using the mixed-powder of ball shape silver powder and flake silver powder as conductive material, and using flake silver powder as
Main, supplemented by ball shape silver powder, flake silver powder dispersiveness is excellent, and it matches with ball shape silver powder, may be such that electrode sintered membrane is more equal
Even densification, conductive phase Internet contact is more perfect, so as to effectively increase the electric conductivity of silver electrode；
3）The barrier that inventive formulation innovation is formed using calcium compound as aerdentalloy, the temperature for forming silver-colored calcium alloy are low
Temperature is formed in aerdentalloy so that overleaf silver element forms alloy, effectively resistance with calcium constituent first in silver paste sintering process
Stop silver-colored aluminium to diffuse into one another to form aerdentalloy, not only increased the welding performance of electrode, and cause back side silver paste in back of the body aluminium lamination
Above, silver-colored region formation BSF layers are being carried on the back, back side silver paste and the contact area of aluminium paste is being added, so as to improve the prepared sun
The open-circuit voltage of energy battery, reduces silver-colored aluminium overlap resistance Rs, effectively increases the photoelectric transformation efficiency Eff of battery.
Brief description of the drawings
Fig. 1 is the cross-sectional scans electromicroscopic photograph figure of back electrode prepared by the present invention.
Embodiment
Below for the present invention embodiment, described embodiment be in order to further describe the present invention, not because
This is limited the present invention in described embodiment invention.
Embodiment 1
A kind of full Al-BSF crystal silicon solar battery back face silver paste, the slurry are made up of following each component：
Ball shape silver powder 12g；
Flake silver powder 60g；
Glass dust 6g；
Calcium carbonate 3g；
Organic carrier 20g；
The 0.1g of wetting agent Tego Wet KL 245；
Dispersant SN-5040 0.1g；
Levelling agent BYK-331 0.1g；
Dimerization rhodium acetate 0.05g.
Wherein, 0.9 μm of described ball shape silver powder particle mean size, D50For 0.9 μm, tap density 6.5g/m3, ablating rate 0.3-
0.8%。
2.5-5.0 μm of flake silver powder particle mean size, D50For 3.1 μm, tap density 4.0-6.0g/m3。
Glass dust is crown glass, softening point 700-750oC, 3.5 μm of particle mean size.
Collectively as processing aid, its overall dosage is 0.2- for wetting agent, dispersant, levelling agent and adhesion promoter
0.5%, wherein, wetting agent is that Tego Wet KL 245 (the German high TEGO substrate wetting agents KL245 of enlightening, sell businessman：Guangzhou
Yi Tong high polymer materials Co., Ltd of city), dispersant SN-5040（For anion surfactant, there is remarkable wetting point
Dissipate characteristic.The foaminess of dispersant 5040 is low, can improve the mobility of coating, has the excellent properties of stable slurry viscosity）, stream
Flat agent is BYK-331（German Bi Ke BYK331 levelling agents, the sale of the Hui Sheng Chemical Co., Ltd.s of Guangzhou hundred million）, adhesion promoter is
Organo-rhodium compounds dimerization rhodium acetate.
When prepared by above-mentioned organic carrier, it is made up of following raw material：
Terpinol 10g；
Butyl carbitol 30g；
Butyl carbitol acetate 30g；
Tributyl 2-acetylcitrate 10g；
Dioctyl phthalate 10g；
Ethyl cellulose 2g；
Cellulose acetate butyrate 2g；
Acrylic resin 3g；
Polyimide resin 3g.
Wherein, terpinol, butyl carbitol, butyl carbitol acetate, tributyl 2-acetylcitrate, phthalic acid two
Monooctyl ester is liquid flux；Ethyl cellulose, cellulose acetate butyrate, acrylic resin, polyimide resin are polymer solids
Powder.
During preparation, by as follows by step progress：
1）The preparation of organic carrier：Liquid flux terpinol 10g, butyl carbitol 30g, butyl carbitol acetic acid are first weighed respectively
Ester 30g, tributyl 2-acetylcitrate 10g, dioctyl phthalate 10g are in 250ml beakers, then weigh polymer respectively and consolidate
Body powder ethyl cellulose 2g, acetylbutyrylcellulose 2g, acrylic resin 3g, polyimide resin 3g, solid powder is put
In liquid in the mixed solvent, in temperature be 75oHeating stirring is after resin is completely dissolved in C Water Tank with Temp.-controlled, with 250 mesh sieves
Net filtration, obtains organic carrier, and cooling is preserved, remained standby；
2）The preparation of slurry：D is weighed respectively50For 0.9 μm, tap density 6.5g/m3Ball shape silver powder 12g, D50For 3.1 μ
M, tap density 6.0g/m3Flake silver powder 60g, softening point 700oC lead-free glass powder 6g, 1g calcium carbonate, above-mentioned preparation
Organic carrier 20.7g, wetting agent Tego Wet KL 245 0.1g, dispersant SN-5040 0.1g, levelling agent BYK331
0.05g, adhesion promoter dimerization rhodium acetate 0.05g are in 100ml Plastic Drums with cover, first in planetary centrifugation high-speed stirred
It is well mixed in machine, then again on three-roll grinder below grinding distribution to 15 μm of fineness, the last mistake in 250 eye mesh screens
Filter, is produced suitable for full Al-BSF crystal silicon solar energy battery back side silver paste, viscosity 97kcps.
Above-mentioned prepared slurry print production in polysilicon solar cell is tried out, making full aluminium using first printing carries on the back
Field republishes prepared back side silver paste and makes backplate, republishes the technological process of production system that front side silver paste makes front electrode
Into after cell piece, test property indices, be as a result listed in table 1, from which it can be seen that prepared cell piece have it is excellent
Combination property.
Fig. 1 is its cross-sectional scans electromicroscopic photograph.
It can be seen that BSF layer of the battery made from this method due to forming continuous whole area, so as to effectively carry
High cell piece open-circuit voltage Uoc so that conversion efficiency Eff is lifted.
Embodiment 2
1）The preparation of organic carrier：Liquid flux terpinol 20g, butyl carbitol 20g, butyl carbitol acetic acid are first weighed respectively
Ester 20g, tributyl 2-acetylcitrate 20g, dioctyl phthalate 5g are in 250ml beakers, then weigh polymer respectively and consolidate
Body powder ethyl cellulose 5g, acetylbutyrylcellulose 4g, acrylic resin 2g, polyimide resin 4g, solid powder is put
In liquid in the mixed solvent, in temperature be 85oHeating stirring is after resin is completely dissolved in C Water Tank with Temp.-controlled, with 300 mesh sieves
Net filtration, obtains organic carrier, and cooling is preserved, remained standby；
2）The preparation of slurry：D is weighed respectively50For 1.6 μm, tap density 4.5g/m3Ball shape silver powder 20g, D50For 3.8 μ
M, tap density 4.0g/m3Flake silver powder 40g, softening point 750oC lead-free glass powder 5.8g, 4g calcium acetate, it is above-mentioned to match somebody with somebody
The organic carrier 30g of system, wetting agent Tego Wet KL 245 0.05g, dispersant B YK-110 0.05g, levelling agent BYK331
0.05g, adhesion promoter dimerization rhodium acetate 0.05g are in 100ml Plastic Drums with cover, first in planetary centrifugation high-speed stirred
It is well mixed in machine, then again on three-roll grinder below grinding distribution to 15 μm of fineness, the last mistake in 250 eye mesh screens
Filter, is produced suitable for full Al-BSF crystal silicon solar energy battery back side silver paste, viscosity 84kcps.
Above-mentioned prepared slurry print production in polysilicon solar cell is tried out, making full aluminium using first printing carries on the back
Field republishes prepared back side silver paste and makes backplate, republishes the technological process of production system that front side silver paste makes front electrode
Into after cell piece, test property indices, be as a result listed in table 1, from which it can be seen that prepared cell piece have it is excellent
Combination property.
Embodiment 3
1）The preparation of organic carrier：Liquid flux terpinol 15g, butyl carbitol 25g, butyl carbitol acetic acid are first weighed respectively
Ester 25g, tributyl 2-acetylcitrate 15g, dioctyl phthalate 8g are in 250ml beakers, then weigh polymer respectively and consolidate
Body powder ethyl cellulose 3g, acetylbutyrylcellulose 3g, acrylic resin 2g, polyimide resin 4g, solid powder is put
In liquid in the mixed solvent, in temperature be 80oHeating stirring is after resin is completely dissolved in C Water Tank with Temp.-controlled, with 300 mesh sieves
Net filtration, obtains organic carrier, and cooling is preserved, remained standby；
2）The preparation of slurry：D is weighed respectively50For 1.2 μm, tap density 5.3g/m3Ball shape silver powder 15.4g, D50For 3.5
μm, tap density 4.8g/m3Flake silver powder 55.1g, softening point 720oC lead-free glass powder 4g, calcium oxalate 3g, it is above-mentioned
The organic carrier 22g of preparation, wetting agent Tego Wet KL 245 0.1g, dispersant B YK-111 0.1g, levelling agent BYK331
0.1g, adhesion promoter dimerization rhodium acetate 0.2g are in 100ml Plastic Drums with cover, first in planetary centrifugation homogenizer
In be well mixed, then again on three-roll grinder below grinding distribution to 15 μm of fineness, finally filtered in 250 eye mesh screens,
Produce and be applied to full Al-BSF crystal silicon solar energy battery back side silver paste, viscosity 91kcps.
Above-mentioned prepared slurry print production in polysilicon solar cell is tried out, making full aluminium using first printing carries on the back
Field republishes prepared back side silver paste and makes backplate, republishes the technological process of production system that front side silver paste makes front electrode
Into after cell piece, test property indices, be as a result listed in table 1, from which it can be seen that prepared cell piece have it is excellent
Combination property.
Embodiment 4
1）The preparation of organic carrier：Liquid flux terpinol 18g, butyl carbitol 23g, butyl carbitol acetic acid are first weighed respectively
Ester 28g, tributyl 2-acetylcitrate 12g, dioctyl phthalate 7g are in 250ml beakers, then weigh polymer respectively and consolidate
Body powder ethyl cellulose 4g, acetylbutyrylcellulose 3g, acrylic resin 1g, polyimide resin 4g, solid powder is put
In liquid in the mixed solvent, in temperature be 75oHeating stirring is after resin is completely dissolved in C Water Tank with Temp.-controlled, with 280 mesh sieves
Net filtration, obtains organic carrier, and cooling is preserved, remained standby；
2）The preparation of slurry：D is weighed respectively50For 1.4 μm, tap density 5.8g/m3Ball shape silver powder 17.9g, D50For 3.6
μm, tap density 4.8g/m3Flake silver powder 49.8g, softening point 730oC lead-free glass powder 5g, calcium dimethacrylate
2g, the organic carrier 25g of above-mentioned preparation, wetting agent Tego Wet KL 245 0.05g, dispersant SN-5040 0.05g, levelling
Agent BYK331 0.1g, adhesion promoter dimerization rhodium acetate 0.1g is in 100ml Plastic Drums with cover, first in planetary centrifugation
It is well mixed in homogenizer, then again on three-roll grinder below grinding distribution to 15 μm of fineness, finally in 250 mesh sieves
Filter, produced suitable for full Al-BSF crystal silicon solar energy battery back side silver paste, viscosity 86kcps in net.
Above-mentioned prepared slurry print production in polysilicon solar cell is tried out, making full aluminium using first printing carries on the back
Field republishes prepared back side silver paste and makes backplate, republishes the technological process of production system that front side silver paste makes front electrode
Into after cell piece, test property indices, be as a result listed in table 1, from which it can be seen that prepared cell piece have it is excellent
Combination property.
Embodiment 5
1）The preparation of organic carrier：Liquid flux terpinol 12g, butyl carbitol 28g, butyl carbitol acetic acid are first weighed respectively
Ester 23g, tributyl 2-acetylcitrate 18g, dioctyl phthalate 6g are in 250ml beakers, then weigh polymer respectively and consolidate
Body powder ethyl cellulose 4g, acetylbutyrylcellulose 4g, acrylic resin 3g, polyimide resin 2g, solid powder is put
In liquid in the mixed solvent, in temperature be 85oHeating stirring is after resin is completely dissolved in C Water Tank with Temp.-controlled, with 320 mesh sieves
Net filtration, obtains organic carrier, and cooling is preserved, remained standby；
2）The preparation of slurry：D is weighed respectively50For 1.2 μm, tap density 6.3g/m3Ball shape silver powder 10g, D50For 3.2 μ
M, tap density 5.7g/m3Flake silver powder 60g, softening point 730oC lead-free glass powder 3g, calcium acetate 3.7g, it is above-mentioned to match somebody with somebody
The organic carrier 23g of system, wetting agent Tego Wet KL 245 0.1g, dispersant B YK-110 0.05g, levelling agent BYK331
0.05g, adhesion promoter dimerization rhodium acetate 0.1g are in 100ml Plastic Drums with cover, first in planetary centrifugation high-speed stirred
It is well mixed in machine, then again on three-roll grinder below grinding distribution to 15 μm of fineness, the last mistake in 250 eye mesh screens
Filter, is produced suitable for full Al-BSF crystal silicon solar energy battery back side silver paste, viscosity 85kcps.
Above-mentioned prepared slurry print production in polysilicon solar cell is tried out, making full aluminium using first printing carries on the back
Field republishes prepared back side silver paste and makes backplate, republishes the technological process of production system that front side silver paste makes front electrode
Into after cell piece, test property indices, be as a result listed in table 1, from which it can be seen that prepared cell piece have it is excellent
Combination property.
Embodiment 6
1）The preparation of organic carrier：Liquid flux terpinol 15g, butyl carbitol 22g, butyl carbitol acetic acid are first weighed respectively
Ester 27g, tributyl 2-acetylcitrate 17g, dioctyl phthalate 9g are in 250ml beakers, then weigh polymer respectively and consolidate
Body powder ethyl cellulose 4g, acetylbutyrylcellulose 2g, acrylic resin 2g, polyimide resin 2g, solid powder is put
In liquid in the mixed solvent, in temperature be 80oHeating stirring is after resin is completely dissolved in C Water Tank with Temp.-controlled, with 320 mesh sieves
Net filtration, obtains organic carrier, and cooling is preserved, remained standby；
2）The preparation of slurry：D is weighed respectively50For 1.3 μm, tap density 6.2g/m3Ball shape silver powder 20g, D50For 3.4 μ
M, tap density 4.9g/m3Flake silver powder 40g, softening point 710oC lead-free glass powder 5.7g, calcium dimethacrylate
3.9g, the organic carrier 30g of above-mentioned preparation, wetting agent Tego Wet KL 245 0.1g, dispersant B YK-111 0.1g, levelling
Agent BYK-331 0.1g, adhesion promoter dimerization rhodium acetate 0.1g is in 100ml Plastic Drums with cover, first in planetary centrifugation
It is well mixed in homogenizer, then again on three-roll grinder below grinding distribution to 15 μm of fineness, finally in 250 mesh sieves
Filter, produced suitable for full Al-BSF crystal silicon solar energy battery back side silver paste, viscosity 87kcps in net.
Above-mentioned prepared slurry print production in polysilicon solar cell is tried out, making full aluminium using first printing carries on the back
Field republishes prepared back side silver paste and makes backplate, republishes the technological process of production system that front side silver paste makes front electrode
Into after cell piece, test property indices, be as a result listed in table 1, from which it can be seen that prepared cell piece have it is excellent
Combination property.
Comparative example 1
1）The preparation of organic carrier：Liquid flux terpinol 10g, butyl carbitol 30g, butyl carbitol acetic acid are first weighed respectively
Ester 30g, tributyl 2-acetylcitrate 10g, dioctyl phthalate 10g are in 250ml beakers, then weigh polymer respectively and consolidate
Body powder ethyl cellulose 2g, acetylbutyrylcellulose 2g, acrylic resin 3g, polyimide resin 3g, solid powder is put
In liquid in the mixed solvent, in temperature be 75oHeating stirring is after resin is completely dissolved in C Water Tank with Temp.-controlled, with 250 mesh sieves
Net filtration, obtains organic carrier, and cooling is preserved, remained standby；
2）The preparation of slurry：D is weighed respectively50For 1.2 μm, tap density 5.3g/m3Ball shape silver powder 15.4g, D50For 3.5
μm, tap density 4.8g/m3Flake silver powder 55.1g, softening point 720oC lead-free glass powder 7g, above-mentioned preparation it is organic
Carrier 22g, wetting agent Tego Wet KL 245 0.1g, dispersant B YK-111 0.1g, levelling agent BYK331 0.1g, attachment
Power accelerator dimerization rhodium acetate 0.2g is mixed equal in planetary centrifugation homogenizer first in 100ml Plastic Drums with cover
It is even, then again on three-roll grinder below grinding distribution to 15 μm of fineness, finally filter, produce applicable in 250 eye mesh screens
In full Al-BSF crystal silicon solar energy battery back side silver paste, viscosity 93kcps.
Above-mentioned prepared slurry print production in polysilicon solar cell is tried out, making full aluminium using first printing carries on the back
Field republishes prepared back side silver paste and makes backplate, republishes the technological process of production system that front side silver paste makes front electrode
Into after cell piece, test property indices, be as a result listed in table 1, from which it can be seen that prepared battery piece performance compared with
Difference.
The present invention is because the innovative calcium compound that added in formula is as silver-colored aluminium it can be seen from the data comparison of table 1
The barrier of aerdentalloy is diffuseed to form, effectively prevents silver-colored aluminium to diffuse into one another to form aerdentalloy, it is prepared so as to improve
The welding performance of silver electrode, and because back side silver paste is in back of the body aluminum layer so that carry on the back silver-colored region and also form BSF layers, add
The contact area of back side silver paste and aluminium paste, compared with the formula for being not added with calcium compound, solar-electricity prepared by the embodiment of the present invention
Pond has the cell photoelectric conversion efficiency Eff of higher open-circuit voltage and Geng Gao.
Cell piece performance comparison is made in the embodiment 1-6 of table 1 and the back side silver paste of comparative example 1
Note：Uoc, open-circuit voltage；Isc, short circuit current；Rs, series resistance；Rsh, parallel resistance；FF, fill factor, curve factor；Eff, turn
Change efficiency.
Summarize：The invention is not limited in above-described embodiment, and the full Al-BSF crystal silicon solar battery back face silver paste can
Formed with each component by following percetage by weight：
Ball shape silver powder 10-20%；
Flake silver powder 40-60%；
Glass dust 3-6%；
Aerdentalloy barrier 1-4%；
Organic carrier 20-30%；
Processing aid 0.2-0.5%；
Wherein, the preferred purity of described ball shape silver powder is more than 99.90%, 0.5-2.0 μm of particle mean size, D50For 0.9-1.6 μm, shake
Real density 4.5-6.5g/m3, ablating rate 0.3-0.8%；
The preferred purity of flake silver powder is more than 99.90%, 2.5-5.0 μm of particle mean size, D50For 3.1-3.8 μm, tap density 4.0-
6.0g/m3；
Glass dust is crown glass, softening point 700-750oC, 3.5-6.5 μm of particle mean size；
Aerdentalloy barrier is calcium compound, one kind in calcium carbonate, calcium acetate, calcium oxalate, calcium dimethacrylate；
Processing aid can be wetting agent, dispersant, levelling agent and adhesion promoter, wherein, wetting agent is Tego Wet KL
245 (the German high TEGO substrate wetting agents KL245 of enlightening, sell businessman：Guangzhou Yi Tong high polymer materials Co., Ltd), disperse
Agent is SN-5040（For anion surfactant, there is remarkable wetting and dispersing characteristic.The foaminess of dispersant 5040 is low, can
Improve the mobility of coating, the excellent properties with stable slurry viscosity）、BYK-110（German Bi Ke BYK110 dispersants, extensively
Zhou Yihuisheng Chemical Co., Ltd.s sell）Or BYK-111（German Bi Ke BYK111 dispersants, a kind of jade of Guangzhou hundred million contain the limited public affairs of chemical industry
Department's sale）In one kind, levelling agent BYK-331（German Bi Ke BYK331 levelling agents, the Hui Sheng Chemical Co., Ltd.s of Guangzhou hundred million pin
Sell）, the adhesion promoter is organo-rhodium compounds dimerization rhodium acetate.
Organic carrier is made up of the raw material of following percetage by weight：
Terpinol 10-20%；
Butyl carbitol 20-30%；
Butyl carbitol acetate 20-30%；
Tributyl 2-acetylcitrate 10-20%；
Dioctyl phthalate 5-10%；
Ethyl cellulose 2-5%；
Cellulose acetate butyrate 2-4%；
Acrylic resin 1-3%；
Polyimide resin 2-4%；
Wherein, terpinol, butyl carbitol, butyl carbitol acetate, tributyl 2-acetylcitrate, dioctyl phthalate
For liquid flux；Ethyl cellulose, cellulose acetate butyrate, acrylic resin, polyimide resin are polymer solids powder
End.
Technology contents of the those skilled in the art according to above-described embodiment, it is not necessary to which performing creative labour can
Replace and deform to make some to some of which technical characteristic, these are replaced and deformed in protection scope of the present invention
It is interior.
Claims (7)
1. a kind of full Al-BSF crystal silicon solar battery back face silver paste, it is characterised in that the slurry is by following percetage by weight
Each component forms：
Ball shape silver powder 10-20%；
Flake silver powder 40-60%；
Glass dust 3-6%；
Aerdentalloy barrier 1-4%；
Organic carrier 20-30%；
Processing aid 0.2-0.5%；
Wherein, described ball shape silver powder, 0.5-2.0 μm of particle mean size, D50For 0.9-1.6 μm, tap density 4.5-6.5g/m3；
2.5-5.0 μm described of flake silver powder particle mean size, D50For 3.1-3.8 μm, tap density 4.0-6.0g/m3；
Described glass dust is crown glass, softening point 700-750oC, 3.5-6.5 μm of particle mean size；
Described aerdentalloy barrier is calcium compound；
Described processing aid is wetting agent, dispersant, levelling agent and adhesion promoter.
2. full Al-BSF crystal silicon solar battery back face silver paste according to claim 1, it is characterised in that the calcification
The one kind of compound in calcium carbonate, calcium acetate, calcium oxalate, calcium dimethacrylate.
3. full Al-BSF crystal silicon solar battery back face silver paste according to claim 2, it is characterised in that the wetting
Agent is Tego Wet KL 245, one kind in dispersant SN-5040, BYK-110 or BYK-111, levelling agent BYK-331,
The adhesion promoter is organo-rhodium compounds dimerization rhodium acetate.
4. a kind of full Al-BSF crystal silicon solar battery back face silver paste according to claim 3, it is characterised in that described
Organic carrier is made up of the raw material of following percetage by weight：
Terpinol 10-20%；
Butyl carbitol 20-30%；
Butyl carbitol acetate 20-30%；
Tributyl 2-acetylcitrate 10-20%；
Dioctyl phthalate 5-10%；
Ethyl cellulose 2-5%；
Cellulose acetate butyrate 2-4%；
Acrylic resin 1-3%；
Polyimide resin 2-4%；
Wherein, terpinol, butyl carbitol, butyl carbitol acetate, tributyl 2-acetylcitrate, dioctyl phthalate
For liquid flux；Ethyl cellulose, cellulose acetate butyrate, acrylic resin, polyimide resin are polymer solids powder
End.
5. a kind of preparation method of full Al-BSF crystal silicon solar battery back face silver paste according to claim 4, it is special
Sign is to comprise the following steps：
Step 1）：Prepare organic carrier
Weight percent is terpinol 10-20%；Butyl carbitol 20-30%；Butyl carbitol acetate 20-30%；Acetyl lemon
Lemon acid tributyl 10-20%；Dioctyl phthalate 5-10%；Ethyl cellulose 2-5%；Cellulose acetate butyrate 2-4%；Third
Olefin(e) acid resin 1-3%；Polyimide resin 2-4% weighs liquid flux and polymer solids powder respectively, by solid powder therein
End is added in liquid flux, then in temperature 75-85oHeating stirring is used after resin is completely dissolved in C Water Tank with Temp.-controlled
250-350 eye mesh screens are sieved, and organic carrier slurry is obtained after sieving, and cooling is preserved, remained standby；
Step 2）：The preparation of back side silver paste
Weight percent weighs ball shape silver powder 10-20%；Flake silver powder 40-60%；Glass dust 3-6%；Aerdentalloy barrier 1-
4%；Organic carrier 20-30%；Processing aid 0.2-0.5%；Each material is placed in container, is first uniformly mixed it, is then ground again
Mill is dispersed to below 15 μm of fineness, is produced suitable for full Al-BSF crystal silicon solar energy battery back side silver paste.
6. a kind of preparation method of full Al-BSF crystal silicon solar battery back face silver paste according to claim 5, it is special
Sign when uniformly mixing, is mixed in step 2 using planetary centrifugation homogenizer；Ground during grinding using three rollers
Machine is ground.
7. a kind of purposes of full Al-BSF crystal silicon solar battery back face silver paste according to claim 4, its feature exist
It is used to make back electrode of solar cell in it, first after silicon chip back side printing aluminium paste makes full Al-BSF, republishes the back side
Silver paste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710804906.2A CN107591218B (en) | 2017-09-08 | 2017-09-08 | Full Al-BSF crystal silicon solar battery back face silver paste, preparation method and the usage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710804906.2A CN107591218B (en) | 2017-09-08 | 2017-09-08 | Full Al-BSF crystal silicon solar battery back face silver paste, preparation method and the usage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107591218A true CN107591218A (en) | 2018-01-16 |
| CN107591218B CN107591218B (en) | 2019-05-24 |
Family
ID=61051841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710804906.2A Active CN107591218B (en) | 2017-09-08 | 2017-09-08 | Full Al-BSF crystal silicon solar battery back face silver paste, preparation method and the usage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107591218B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109215840A (en) * | 2018-09-30 | 2019-01-15 | 江苏正能电子科技有限公司 | A kind of back passivated battery high efficiency back side silver paste and preparation method thereof |
| CN109390075A (en) * | 2018-12-18 | 2019-02-26 | 江苏正能电子科技有限公司 | Full Al-BSF crystal silicon solar energy battery high-tensile strength low temperature curing type back side silver paste |
| CN109461515A (en) * | 2018-11-07 | 2019-03-12 | 刘紫嫣 | A kind of high temperature sintering conductive silver paste and preparation method thereof |
| CN109524150A (en) * | 2018-07-06 | 2019-03-26 | 南通天盛新能源股份有限公司 | A kind of full Al-BSF back silver paste and the preparation method and application thereof |
| CN109659068A (en) * | 2018-12-18 | 2019-04-19 | 江苏正能电子科技有限公司 | Full Al-BSF crystal silicon solar energy battery low temperature curing type back side silver paste |
| CN110120274A (en) * | 2019-06-05 | 2019-08-13 | 苏州晶银新材料股份有限公司 | A kind of back electrode slurry of full Al-BSF and its preparation method and application |
| WO2020015021A1 (en) * | 2018-07-16 | 2020-01-23 | 南通天盛新能源股份有限公司 | Preparation method for back electrode of solar cell and application |
| CN114724742A (en) * | 2021-12-22 | 2022-07-08 | 西安创联光电新材料有限公司 | Back silver paste for crystalline silicon solar cell and preparation method and application thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262940A (en) * | 2011-07-19 | 2011-11-30 | 彩虹集团公司 | Method for preparing rear silver slurry used for crystalline silicon solar battery |
| US20120318343A1 (en) * | 2010-12-16 | 2012-12-20 | E. I. Du Pont De Nemours And Company | Silicon-free aluminum paste composition for forming an aluminum back electrode with large silicon particles |
| CN103617822A (en) * | 2013-11-29 | 2014-03-05 | 江苏瑞德新能源科技有限公司 | Low-warpage aluminum-back paste |
| KR20140120387A (en) * | 2013-03-27 | 2014-10-14 | 동우 화인켐 주식회사 | Silver paste composition and electrode using the same |
| CN104700923A (en) * | 2013-12-10 | 2015-06-10 | 湖南利德电子浆料有限公司 | Solar cell back sliver paste with high photoelectric conversion efficiency and production method thereof |
| CN105810293A (en) * | 2016-05-13 | 2016-07-27 | 浙江光达电子科技有限公司 | Silver paste for back electrode of crystalline silicon solar cell and preparation method of silver paste |
| CN106653148A (en) * | 2016-12-16 | 2017-05-10 | 杭州杭硕新材料科技有限公司 | Back electrode silver paste for crystalline silicon solar cell and preparation method of back electrode silver paste |
| JP2017092251A (en) * | 2015-11-10 | 2017-05-25 | 株式会社ノリタケカンパニーリミテド | Conductive composition |
-
2017
- 2017-09-08 CN CN201710804906.2A patent/CN107591218B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120318343A1 (en) * | 2010-12-16 | 2012-12-20 | E. I. Du Pont De Nemours And Company | Silicon-free aluminum paste composition for forming an aluminum back electrode with large silicon particles |
| CN102262940A (en) * | 2011-07-19 | 2011-11-30 | 彩虹集团公司 | Method for preparing rear silver slurry used for crystalline silicon solar battery |
| KR20140120387A (en) * | 2013-03-27 | 2014-10-14 | 동우 화인켐 주식회사 | Silver paste composition and electrode using the same |
| CN103617822A (en) * | 2013-11-29 | 2014-03-05 | 江苏瑞德新能源科技有限公司 | Low-warpage aluminum-back paste |
| CN104700923A (en) * | 2013-12-10 | 2015-06-10 | 湖南利德电子浆料有限公司 | Solar cell back sliver paste with high photoelectric conversion efficiency and production method thereof |
| JP2017092251A (en) * | 2015-11-10 | 2017-05-25 | 株式会社ノリタケカンパニーリミテド | Conductive composition |
| CN105810293A (en) * | 2016-05-13 | 2016-07-27 | 浙江光达电子科技有限公司 | Silver paste for back electrode of crystalline silicon solar cell and preparation method of silver paste |
| CN106653148A (en) * | 2016-12-16 | 2017-05-10 | 杭州杭硕新材料科技有限公司 | Back electrode silver paste for crystalline silicon solar cell and preparation method of back electrode silver paste |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109524150A (en) * | 2018-07-06 | 2019-03-26 | 南通天盛新能源股份有限公司 | A kind of full Al-BSF back silver paste and the preparation method and application thereof |
| WO2020015021A1 (en) * | 2018-07-16 | 2020-01-23 | 南通天盛新能源股份有限公司 | Preparation method for back electrode of solar cell and application |
| US11791425B2 (en) | 2018-07-16 | 2023-10-17 | Nantong T-Sun New Energy Co., Ltd. | Preparation method for solar cell back electrode and application thereof |
| CN109215840A (en) * | 2018-09-30 | 2019-01-15 | 江苏正能电子科技有限公司 | A kind of back passivated battery high efficiency back side silver paste and preparation method thereof |
| CN109461515A (en) * | 2018-11-07 | 2019-03-12 | 刘紫嫣 | A kind of high temperature sintering conductive silver paste and preparation method thereof |
| CN109390075A (en) * | 2018-12-18 | 2019-02-26 | 江苏正能电子科技有限公司 | Full Al-BSF crystal silicon solar energy battery high-tensile strength low temperature curing type back side silver paste |
| CN109659068A (en) * | 2018-12-18 | 2019-04-19 | 江苏正能电子科技有限公司 | Full Al-BSF crystal silicon solar energy battery low temperature curing type back side silver paste |
| CN110120274A (en) * | 2019-06-05 | 2019-08-13 | 苏州晶银新材料股份有限公司 | A kind of back electrode slurry of full Al-BSF and its preparation method and application |
| CN110120274B (en) * | 2019-06-05 | 2021-07-09 | 苏州晶银新材料股份有限公司 | Back electrode slurry of all-aluminum back surface field and preparation method and application thereof |
| CN114724742A (en) * | 2021-12-22 | 2022-07-08 | 西安创联光电新材料有限公司 | Back silver paste for crystalline silicon solar cell and preparation method and application thereof |
| CN114724742B (en) * | 2021-12-22 | 2024-05-24 | 西安创联光电新材料有限公司 | Back silver paste for crystalline silicon solar cell, preparation method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107591218B (en) | 2019-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107591218B (en) | Full Al-BSF crystal silicon solar battery back face silver paste, preparation method and the usage | |
| Sengupta et al. | Effects of doping, morphology and film-thickness of photo-anode materials for dye sensitized solar cell application–A review | |
| TWI576861B (en) | Conductive aluminum pastes and the fabrication method thereof, the solar cell and the module thereof | |
| CN104409642B (en) | Preparation method of perovskite/P-type quantum dot composite solar cell | |
| US20180226172A1 (en) | Solar cell front side silver paste doped with modified grapheme and preparation method thereof | |
| CN102956283B (en) | A kind of new and effective crystal silicon solar batteries unleaded silver slurry and preparation and application thereof | |
| CN106887273A (en) | PERC crystal silicon solar energy battery back silver pastes and preparation method thereof | |
| Suresh et al. | Metal-free low-cost organic dye-sensitized ZnO-nanorod photoanode for solid-state solar cell | |
| CN111028976A (en) | Back silver paste for all-aluminum back surface field solar cell | |
| EP1724838A1 (en) | Tandem photovoltaic conversion device | |
| CN110459343A (en) | A kind of full Al-BSF crystal silicon solar energy battery low-temperature sintering type back side silver paste | |
| Zhou et al. | Strategies to improve the stability of perovskite-based tandem solar cells | |
| Wei et al. | Recent progress of colloidal quantum dot based solar cells | |
| US7932465B2 (en) | Photoelectric electrodes capable of absorbing light energy, fabrication methods, and applications thereof | |
| CN109659068B (en) | Low-temperature curing type back silver paste for all-aluminum back surface field crystalline silicon solar cell | |
| CN104681123A (en) | Solar battery back silver paste and preparing method thereof as well as solar battery and preparing method thereof | |
| TWI493729B (en) | Conductive paste for front electrode of solar cell and the manufacturing method thereof | |
| Liu et al. | The performances of the mercurochrome-sensitized composite semiconductor photoelectrochemical cells based on TiO2/SnO2 and ZnO/SnO2 composites | |
| Aponsu et al. | The enhancement of photovoltaic parameters in dye-sensitized solar cells of nano-crystalline SnO2 by incorporating with large SrTiO3 particles | |
| JP2013058471A (en) | Conductive composition and manufacturing method | |
| Bhagwat et al. | Recent advances in optimization of photoanodes and counter electrodes of dye-sensitized solar cells | |
| CN107742658A (en) | A kind of solar-energy photo-voltaic cell | |
| JP6068559B2 (en) | Solar cell and its electrode | |
| Arif et al. | The influence of carbon counter electrode composition on the performance of monolithic dye-sensitized solar cells | |
| KR101189623B1 (en) | Metal paste composition for front electrode of silicon solar cell, Method of preparing the same and Silicon solar cell comprising the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |