CN107731346A - Low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry and preparation method - Google Patents

Low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry and preparation method Download PDF

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CN107731346A
CN107731346A CN201711204680.9A CN201711204680A CN107731346A CN 107731346 A CN107731346 A CN 107731346A CN 201711204680 A CN201711204680 A CN 201711204680A CN 107731346 A CN107731346 A CN 107731346A
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silver powder
powder
solar energy
front electrode
crystal silicon
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王立惠
石海信
尹艳镇
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Qinzhou University
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Qinzhou University
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20Conductive material dispersed in non-conductive organic material
    • H01B1/22Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00Apparatus or processes specially adapted for manufacturing conductors or cables
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor 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
    • H01L31/02Details
    • H01L31/0224Electrodes
    • H01L31/022408Electrodes for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/022425Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Abstract

The invention discloses low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry and preparation method thereof, comprise the following steps:1) glass dust is prepared:Raw material is weighed, is well mixed, melting is carried out, then takes out, water quenching, crushing, ball milling, sieving, is sieved after drying and obtains glass dust;2) organic carrier is prepared:Resin and organic solvent are weighed, resin is dissolved in organic solvent, dispersant and anti-settling agent is added as auxiliary agent, stirs to form organic carrier;3) silver powder, glass dust, metal oxide powder are weighed to be added in organic carrier, is stirred, is ground, vacuum outgas, detection is qualified to produce silver paste of the present invention.

Description

Low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry and preparation method
Technical field
The invention belongs to electronic material, is related to electronics, chemical industry and Material Field, is related to a kind of front electrode of solar battery Silver paste and preparation method, and in particular to low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry and preparation method.
Background technology
Crystal silicon solar energy battery is current utility ratio highest solar cell, but is exceeded because it continues usage time 50 years, metallic electrode was the critical material of crystal silicon solar energy battery, especially grid electrode front material, directly affects solar energy The electricity conversion of battery, the performance indexs such as shadow, series resistance are filled, so, the quality and performance of front electrode silver slurry Quality directly decide the service life and the dough softening of battery.Front side silver paste is realized by silk-screen printing technique and metallized, and is Shading surface is reduced as far as possible, while to corrode SiNx antireflective coatings, is formed comparatively ideal Ag-Si Ohmic contacts, is realized p-n junction Effective export of electric current, but corrode the structure of the too deep core, i.e. p-n junction that can destroy battery, battery performance is reduced very To failure, corrosion is too shallow to be prevented electric current battery conversion efficiency is low from effectively exporting, therefore, by electrode slurry performance Improve, realize that corrosion of the slurry to SiNx antireflective coatings is carried out compared with low temperature, be both avoided that under temperature higher strip part and metallized Shi Zaocheng elements diffusions strengthen the influence to p-n, and and can ensures that corrosion is more thorough, and battery performance is stable, so, compared with low temperature The sintering of electrode slurry is that battery realizes one of efficient, stable critical path.
Front electrode silver slurry is mainly made up of conducting powder, inorganic cementitious material, organic carrier and additive, and conducting powder is being burnt Conducting wire is formed after knot, and realizes the current lead-through between battery and external welding;Inorganic cementitious material is in sintering process SiNx antireflective coatings are burnt, realize the UNICOM between silver electrode and silicon and bonding;Organic carrier makes electrode slurry have good print Brush performance, realize preferable print request.
As the critical material of crystal silicon solar energy battery, prior art is to this existing more research.In patent In CN2301310440104, rhodium, ruthenium or iridium simple substance or rhodium-containing, ruthenium or iridic compound are added in the slurry as sintering aidses, The generation that can effectively prevent bypass from tying, improve the yield rate of cell piece;In patent CN201310429619, by addition containing indium and Tin compound, strengthen the adhesion strength between electrode and silicon substrate, reduce string resistance.
Document above and existing patented technology all pertain only to changing to front electrode silver slurry binding material, printing etc. It is kind, but all improve the performance of front electrode silver slurry not from the point of view of conductive component, the purpose of the present invention is exactly to pass through The formula design of conductive component, prepares the front electrode silver slurry that sintering temperature is low, conversion efficiency is stable, sintering temperature is low.
The content of the invention
Present invention aims at low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry and preparation method is provided, use In substituting the current slurry for needing to print twice, realize that lower temperature sinters.
Low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry of the present invention, it is composed of the following components:
Silver powder 67.0-91.0wt%, glass dust 1.0-8.0wt%, 0-3.0wt% metal oxide powder, organic carrier 6.0-30.0wt%;
Described silver powder, described silver powder, preferably by 68.0-87.0wt% spherical silver powder and 13.0-32.0wt% Nano-silver powder composition, the particle diameter of spherical silver powder is 0.8-1.8 μm, tap density 2.8-6.0g/cm3, nano-silver powder Particle diameter is 0.03-0.20 μm, tap density 0.9-1.5g/cm3;The nano-silver powder is prepared using rf induction plasma It is prepared by technology.
The invention further relates to the preparation method of above-mentioned low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry, bag Include following steps:
1) glass dust is prepared:Raw material is weighed, is well mixed, melting is carried out, then takes out, water quenching, crushing, ball milling, sieving, Sieving obtains glass dust after drying;
2) organic carrier is prepared:Weigh resin and organic solvent, resin be dissolved in organic solvent, add dispersant and Anti-settling agent stirs to form organic carrier as auxiliary agent;
3) silver powder, glass dust, metal oxide powder are weighed to be added in organic carrier, is stirred, is ground, vacuum takes off Gas, detection is qualified to produce silver paste of the present invention.
Raw material is weighed described in step 1) of the present invention, preferably weighs 8.0-30.0wt% bismuth oxides, 20.0-60.0wt% oxygen Change several in tellurium, 20.0-60.0wt% lead oxide, 1.0-5.0wt% lithias, 0-0.3wt% potassium oxides.
It is well mixed described in step 1), melting is carried out, is then taken out, water quenching, crushing, ball milling, sieving, is sieved after drying Glass dust is obtained, after preferably above-mentioned raw materials are well mixed with three-dimensional material mixer, loaded on platinum crucible, is placed in high temperature resistance furnace Melting is carried out, in 900-1000 DEG C of melting 1 hour, water quenching, crushing, ball milling, sieving after taking-up, is sieved after being dried in 65-75 DEG C Obtain glass dust, D100≤1.8 μm.
Resin described in step 2), preferably ethyl cellulose, NC Nitroncellulose, ethylhydroxyethylcellulose, wood rosin In one or more, when mixing when be arbitrary proportion;
Described organic solvent, preferably terpineol, turpentine oil, butyl, dibutyl ethylene glycol ether, butyl card must One or more in alcohol acetate, dipropylene glycol monomethyl ether, Tripropylene glycol monomethyl Ether, it is arbitrary proportion when mixing;
Described dispersant, preferred surfactant Span 85;
Described anti-settling agent, preferably organobentonite.
Weighing described in step 2), according to 5.0-16.0wt% resins, 80.0-90.0wt% organic solvents, 6.0- 6.0wt% dispersants, 0.5-1.6wt% anti-settling agents;
Resin is dissolved in organic solvent described in step 2), it is equal as auxiliary agent, stirring to add dispersant and anti-settling agent Even formation organic carrier, preferably organic solvent is added in rustless steel container and mixed, then resin is added in whipping process, heated up To 70-90 DEG C, after resin has been completely dissolved, it is cooled at 40-50 DEG C and adds surfactant and anti-settling agent, be filtrated to get The bright organic carrier with good print.
Weigh silver powder, glass dust, metal oxide powder described in step 3) are added in organic carrier, preferably weigh 82.0-91.0wt% silver powder, 1.5-6.0wt% glass dust, 0-2.0wt% metal oxide powder, are added to 6.0-14.0wt% In organic carrier;
Silver powder described in step 3), preferably by 68.0-87.0wt% spherical silver powder and 13.0-32.0wt% nanometer Silver powder forms, and the particle diameter of spherical silver powder is 0.8-1.8 μm, and the particle diameter of nano-silver powder is 0.03-0.2 μm;The nano-silver powder Prepared using rf induction plasma technology of preparing.
Described metal oxide powder, preferably zinc oxide, bismuth oxide, boron oxide, magnesia, sodium oxide molybdena, nickel oxide, oxidation Copper, zirconium oxide, cerium oxide, praseodymium oxide, vanadium oxide, phosphorus pentoxide, lanthana, titanium oxide, the one or more of cobalt oxide are mixed Close, be arbitrary proportion when mixing.
Stirring described in step 3), grinding, vacuum outgas, is preferably stirred with high speed dispersor, uses three rollers Grinder grind 6-10 times, then with stir deaeration machine vacuum outgas.
Compared with prior art, the present invention has advantages below:
1st, the silver paste function admirable that the present invention obtains, sintering temperature is low, and sintering window is wide:740-820℃/1-3s;Silk screen Printing quality is excellent:400 mesh stainless steel cloths are printed, and line width≤24 μm (are tested) with film thickness gauge;Solderability is excellent, with 350 DEG C of flatirons Welding is welded on electrode manually, with 180 ° of tensiometer, peeled off with 0.3cm/s speed, test welding pulling force is attached Put forth effort:≥6.5N/mm2
2nd, photoelectric transformation efficiency is high:Monocrystalline silicon piece >=21.5%, polysilicon chip >=20.5%, (solar simulator is being marked Tested under the conditions of standard);
3rd, the present invention is because adding nano-silver powder, and inorganic cementitious material formula is improved, and metallizing temperature substantially drops It is low, it is smaller than 820 DEG C and realizes preferable sintering.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, the present invention is carried out below further Describe in detail.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this hair It is bright.
Embodiment 1:
Step A:Prepare glass dust.Weigh 8.0wt% bismuth oxides, 27.0wt% tellurium oxides, 60.0wt% lead oxide, 5.0wt% lithias, 0.3wt% potassium oxides.After with three-dimensional material mixer, above-mentioned raw materials are well mixed, loaded on platinum crucible, put Melting is carried out in high temperature resistance furnace, in 1000 DEG C of meltings 1 hour, water quenching, crushing, ball milling, sieving after taking-up, in 65 DEG C of dryings Sieving obtains glass dust afterwards, and average grain diameter is 0.3-1.5 μm;
Step B:Prepare organic carrier.Weigh 63.0wt% butyls, 12.0wt% dibutyl ethylene glycol ethers, 12.0wt% butyl carbitol acetates, 6.0wt% ethyl celluloses, 3.5wt% surfactant Span 85,0.5wt% Anti-settling agent organobentonite.First butyl, dibutyl ethylene glycol ether and butyl carbitol acetate are added stainless Mixed in steel container, then ethyl cellulose is added in whipping process, be warming up to 70-90 DEG C, after resin has been completely dissolved, drop For temperature to surfactant Span 85 and organobentonite is added at 40-50 DEG C, being filtrated to get transparent has good print Organic carrier;
Step C:From conductive silver powder.Silver powder is two kinds of silver powder mixtures, wherein it is 0.8 that special shape, which includes average grain diameter, μm spherical silver powder, its tap density 2.8g/cm3;Average grain diameter is 0.08 μm of nano-silver powder, tap density 1.2g/ cm3;Above conductive powder body passes through mechanical mixture according to the weight ratio of the spherical silver powder of 68.0wt% and 32.0wt% nano-silver powders Uniformly, it can mutually fill, be crosslinked in slurry sintering process, reach the target of good solderability.
Step D:Prepare electrode slurry.82.0% conductive silver powder by mass percentage, 7.4% silver coated aluminum powder, 0.6% Metal oxide powder (metal oxide is zinc oxide, bismuth oxide, boron oxide, magnesia, sodium oxide molybdena, nickel oxide, cupric oxide, Zirconium oxide, cerium oxide, praseodymium oxide, vanadium oxide, phosphorus pentoxide, lanthana, titanium oxide, one or more of mixing of cobalt oxide), 2.0% glass dust, 8.0% organic carrier dispensing simultaneously mixes, is stirred with de-airing mixer, be tuned into pasty state, with three rollers Grinder is ground 6-8 times, that is, obtains piezo-resistance electrode silver plasm.
The performance of obtained front electrode slurry:
Slurry fineness:≤5μm;
Silk-screen printing:400 mesh stainless steel cloths print, line width≤24 μm;
Sintering temperature:740-820℃/1-3s;
Conversion efficiency:Monocrystalline silicon piece >=21.5%, polysilicon chip >=20.5%;
Adhesive force:≥6.6N/mm2
Metallizing temperature:≤810℃.
Embodiment 2:
Step A:Weigh 30.0wt% bismuth oxides, 20.0wt% tellurium oxides, 49.0wt% lead oxide, 1.0wt% lithias, 0.1wt% potassium oxides.After with three-dimensional material mixer, above-mentioned raw materials are well mixed, loaded on platinum crucible, it is placed in high temperature resistance furnace Carry out melting, in 950 DEG C of meltings 1 hour, water quenching, crushing, ball milling, sieving after taking-up, after being dried in 75 DEG C sieving obtain glass Powder, average grain diameter are 0.3-1.5 μm;
Step B:Prepare organic carrier.Weigh 64.0wt% butyls, 15.5wt% dibutyl ethylene glycol ethers, 10.0wt% butyl carbitol acetates, 5.0wt% ethyl celluloses, 6.0wt% surfactant Span 85,1.6wt% Anti-settling agent organobentonite.First butyl, dibutyl ethylene glycol ether and butyl carbitol acetate are added stainless Mixed in steel container, then ethyl cellulose is added in whipping process, be warming up to 70-100 DEG C, after resin has been completely dissolved, It is cooled at 40-50 DEG C and adds surfactant Span 85 and organobentonite, being filtrated to get transparent has good print Organic carrier;
Step C:From conductive silver powder.Silver powder is two kinds of silver powder mixtures, wherein it is 1.8 that special shape, which includes average grain diameter, μm spherical silver powder, its tap density 6.0g/cm3;Average grain diameter is 0.03 μm of nano-silver powder, tap density 0.2g/ cm3;Above conductive powder body passes through mechanical mixture according to the weight ratio of the spherical silver powder of 87.0wt% and 13.0wt% nano-silver powders Uniformly, it can mutually fill, be crosslinked in slurry sintering process, reach the target of good solderability.
Step D:Prepare electrode slurry.68.0% conductive silver powder by mass percentage, 16.0% silver coated aluminum powder, 6.0% glass dust, 10.0% organic carrier dispensing simultaneously mixes, is stirred with de-airing mixer, be tuned into pasty state, with three rollers Grinder is ground 6-8 times, that is, obtains piezo-resistance electrode silver plasm.
The performance of obtained front electrode slurry:
Slurry fineness:≤5μm;
Silk-screen printing:400 mesh stainless steel cloths print, line width≤24 μm;
Sintering temperature:760-860℃/1-3s;
Conversion efficiency:Monocrystalline silicon piece >=21.5%, polysilicon chip >=20.5%;
Adhesive force:≥6.8N/mm2
Metallizing temperature:≤818℃.
Embodiment 3:
Step A:Weigh 17.0wt% bismuth oxides, 60.0wt% tellurium oxides, 20.0wt% lead oxide, 3.0wt% lithias. After above-mentioned raw materials are well mixed with three-dimensional material mixer, loaded on platinum crucible, it is placed in high temperature resistance furnace and carries out melting, in 900 DEG C melting 1 hour, water quenching, crushing, ball milling, sieving after taking-up, after being dried in 70 DEG C sieving obtain glass dust, average grain diameter is 0.3-1.5μm;
Step B:Prepare organic carrier.Weigh 60.0wt% butyls, 8.0wt% terpineols, 12.0wt% bis- Butyl cellosolve, 10.0wt% butyl carbitol acetates, 12wt% ethyl celluloses, 4.0wt% NC Nitroncelluloses, 3.0wt% surfactant Span 85,1.0wt% anti-settling agent organobentonite.First by butyl, terpineol, Dibutyl ethylene glycol ether and butyl carbitol acetate, which are added in rustless steel container, to be mixed, then ethyl fibre is added in whipping process Dimension element, is warming up to 70-90 DEG C, after resin has been completely dissolved, is cooled at 40-50 DEG C and adds surfactant Span 85 and have Machine bentonite, it is filtrated to get the transparent organic carrier with good print;
Step C:From conductive silver powder.Silver powder is two kinds of silver powder mixtures, wherein it is 1.2 that special shape, which includes average grain diameter, μm spherical silver powder, its tap density 4.5g/cm3;Average grain diameter is 0.2 μm of nano-silver powder, tap density 1.5g/ cm3;Above conductive powder body passes through mechanical mixture according to the weight ratio of the spherical silver powder of 82.0wt% and 18.0wt% nano-silver powders Uniformly, it can mutually fill, be crosslinked in slurry sintering process, reach the target of good solderability.
Step D:Prepare electrode slurry.76.0% conductive silver powder by mass percentage, 2.0% silver coated aluminum powder, (metal oxide is zinc oxide to 1.2% metal oxide powder, bismuth oxide, boron oxide, magnesia, sodium oxide molybdena, nickel oxide, oxygen Change copper, zirconium oxide, cerium oxide, praseodymium oxide, vanadium oxide, phosphorus pentoxide, lanthana, titanium oxide, the one or more of cobalt oxide Mixing), 4.8% glass dust, 16.0% organic carrier dispensing simultaneously mixes, and is stirred with de-airing mixer, is tuned into pasty state, Ground 6-8 times with three-roll grinder, that is, obtain piezo-resistance electrode silver plasm.
The performance of obtained front electrode slurry:
Slurry fineness:≤5μm;
Silk-screen printing:400 mesh stainless steel cloths print, line width≤24 μm;
Sintering temperature:760-860℃/1-3s;
Conversion efficiency:Monocrystalline silicon piece >=21.5%, polysilicon chip >=20.5%;
Adhesive force:≥6.6N/mm2
Metallizing temperature:≤812℃.
Certainly, the present invention can also have other various embodiments, ripe in the case of without departing substantially from spirit of the invention and its essence Various corresponding changes and deformation, but these corresponding changes and deformation can be made according to the present invention by knowing those skilled in the art Protection scope of the present invention should all be belonged to.

Claims (10)

1. low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry, it is characterised in that composed of the following components:
Silver powder 67.0-91.0wt%, glass dust 1.0-8.0wt%, 0-3.0wt% metal oxide powder, organic carrier 6.0- 30.0wt%;
Described silver powder, it is made up of the nano-silver powder of 68.0-87.0wt% spherical silver powder and 13.0-32.0wt%, class ball The particle diameter of shape silver powder is 0.8-1.8 μm, tap density 2.8-6.0g/cm3, the particle diameter of nano-silver powder is 0.03-0.20 μm, is shaken Real density is 0.9-1.5g/cm3
The nano-silver powder is prepared using rf induction plasma technology of preparing.
2. the preparation method of the low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry described in claim 1, its feature It is, comprises the following steps:
1) glass dust is prepared:Raw material is weighed, is well mixed, melting is carried out, then takes out, water quenching, crushing, ball milling, sieving, is dried Sieving obtains glass dust afterwards;
2) organic carrier is prepared:Resin and organic solvent are weighed, resin is dissolved in organic solvent, adds dispersant and anti-settling Agent stirs to form organic carrier as auxiliary agent;
3) silver powder, glass dust, metal oxide powder are weighed to be added in organic carrier, is stirred, is ground, vacuum outgas, inspection Survey and qualified produce silver paste of the present invention.
3. the preparation method of low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry according to claim 2, its It is characterised by:Weigh raw material described in step 1), be weigh 8.0-30.0wt% bismuth oxides, 20.0-60.0wt% tellurium oxides, It is several in 20.0-60.0wt% lead oxide, 1.0-5.0wt% lithias, 0-0.3wt% potassium oxides.
4. the preparation method of low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry according to claim 2, its It is characterised by:It is well mixed described in step 1), melting is carried out, is then taken out, water quenching, crushing, ball milling, sieving, mistake after drying Sieve obtains glass dust, after with three-dimensional material mixer, above-mentioned raw materials are well mixed, loaded on platinum crucible, is placed in high temperature resistance furnace Row melting, in 900-1000 DEG C of melting 1 hour, water quenching, crushing, ball milling, sieving after taking-up, sieved after being dried in 65-75 DEG C To glass dust, D100≤1.8 μm.
5. the preparation method of low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry according to claim 2, its It is characterised by:Resin described in step 2), it is in ethyl cellulose, NC Nitroncellulose, ethylhydroxyethylcellulose, wood rosin One or more, it is arbitrary proportion when mixing;Described organic solvent, it is terpineol, turpentine oil, butyl, two One or more in butyl cellosolve, butyl carbitol acetate, dipropylene glycol monomethyl ether, Tripropylene glycol monomethyl Ether, when It is arbitrary proportion during mixing;Described dispersant, it is surfactant Span 85;Described anti-settling agent, it is organobentonite.
6. the preparation method of low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry according to claim 2, its It is characterised by:Step 2) weighs, and divides according to 5.0-16.0wt% resins, 80.0-90.0wt% organic solvents, 6.0-6.0wt% Powder, 0.5-1.6wt% anti-settling agents.
7. the preparation method of low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry according to claim 2, its It is characterised by:Resin is dissolved in organic solvent described in step 2), it is equal as auxiliary agent, stirring to add dispersant and anti-settling agent Even formation organic carrier, it is to add organic solvent in rustless steel container to mix, then resin is added in whipping process, is warming up to 70-90 DEG C, after resin has been completely dissolved, it is cooled at 40-50 DEG C and adds surfactant and anti-settling agent, be filtrated to get transparent The organic carrier with good print.
8. the preparation method of low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry according to claim 2, its It is characterised by:Weigh silver powder, glass dust, metal oxide powder described in step 3) are added in organic carrier, are to weigh 82.0- 91.0wt% silver powder, 1.5-6.0wt% glass dust, 0-2.0wt% metal oxide powder, be added to 6.0-14.0wt% have it is airborne In body.
9. the preparation method of low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry according to claim 2, its It is characterised by:Silver powder described in step 3), include the nanometer of 68.0-87.0wt% spherical silver powder and 13.0-32.0wt% Silver powder forms, and the particle diameter of spherical silver powder is 0.8-1.8 μm, and the particle diameter of nano-silver powder is 0.03-0.2 μm;The nano-silver powder Prepared using rf induction plasma technology of preparing;Described metal oxide powder, it is zinc oxide, bismuth oxide, oxidation One or more of mixing of magnesium, sodium oxide molybdena, nickel oxide, cupric oxide, cuprous oxide, zirconium dioxide, are arbitrary proportion when mixing.
10. the preparation method of low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry according to claim 2, its It is characterised by:Stirring described in step 3), grinding, vacuum outgas, is stirred with high speed dispersor, is ground using three rollers Grinding machine grind 6-10 times, then with stir deaeration machine vacuum outgas.
CN201711204680.9A 2017-11-27 2017-11-27 Low-temperature sintering type crystal silicon solar energy battery front electrode silver slurry and preparation method Pending CN107731346A (en)

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CN112289481A (en) * 2019-07-23 2021-01-29 苏州晶银新材料股份有限公司 Solar cell front electrode slurry and preparation method and application thereof
CN112687420A (en) * 2021-01-08 2021-04-20 南通天盛新能源股份有限公司 Low-temperature sintered silver paste and preparation method thereof
CN113903496A (en) * 2021-10-29 2022-01-07 江苏正能电子科技有限公司 Busbar repair type silver paste suitable for PERC and preparation method thereof
CN114822909A (en) * 2022-04-29 2022-07-29 广东南海启明光大科技有限公司 Crystalline silicon solar cell silver-aluminum paste for low-temperature sintering, preparation method and application

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CN114822909B (en) * 2022-04-29 2024-03-26 广东南海启明光大科技有限公司 Silver-aluminum paste for low-temperature sintering crystalline silicon solar cell, preparation method and application

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Application publication date: 20180223