CN105845197B - Conductive additive for solar cell process and conductive paste thereof - Google Patents
Conductive additive for solar cell process and conductive paste thereof Download PDFInfo
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- CN105845197B CN105845197B CN201510015862.6A CN201510015862A CN105845197B CN 105845197 B CN105845197 B CN 105845197B CN 201510015862 A CN201510015862 A CN 201510015862A CN 105845197 B CN105845197 B CN 105845197B
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- component ratio
- conductive
- electrocondution slurry
- solar battery
- battery process
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- 238000000034 method Methods 0.000 title claims description 36
- 239000002482 conductive additive Substances 0.000 title abstract 3
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 22
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000002904 solvent Substances 0.000 claims abstract description 14
- 239000002270 dispersing agent Substances 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 7
- 239000002002 slurry Substances 0.000 claims description 29
- 238000005245 sintering Methods 0.000 claims description 22
- 239000012752 auxiliary agent Substances 0.000 claims description 18
- 239000011521 glass Substances 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 14
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 239000000080 wetting agent Substances 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 9
- 238000007711 solidification Methods 0.000 claims description 9
- 230000008023 solidification Effects 0.000 claims description 9
- 239000013530 defoamer Substances 0.000 claims description 6
- 239000013008 thixotropic agent Substances 0.000 claims description 5
- VXQBJTKSVGFQOL-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethyl acetate Chemical compound CCCCOCCOCCOC(C)=O VXQBJTKSVGFQOL-UHFFFAOYSA-N 0.000 claims description 4
- QZCLKYGREBVARF-UHFFFAOYSA-N Acetyl tributyl citrate Chemical compound CCCCOC(=O)CC(C(=O)OCCCC)(OC(C)=O)CC(=O)OCCCC QZCLKYGREBVARF-UHFFFAOYSA-N 0.000 claims description 4
- 239000012298 atmosphere Substances 0.000 claims description 4
- RBNWAMSGVWEHFP-UHFFFAOYSA-N trans-p-Menthane-1,8-diol Chemical compound CC(C)(O)C1CCC(C)(O)CC1 RBNWAMSGVWEHFP-UHFFFAOYSA-N 0.000 claims description 4
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 3
- 229940113088 dimethylacetamide Drugs 0.000 claims description 3
- -1 lauryl alcohol ester Chemical class 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 claims description 2
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims description 2
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 2
- 239000001856 Ethyl cellulose Substances 0.000 claims description 2
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims description 2
- 239000001293 FEMA 3089 Substances 0.000 claims description 2
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 229920000180 alkyd Polymers 0.000 claims description 2
- 229940099352 cholate Drugs 0.000 claims description 2
- BHQCQFFYRZLCQQ-OELDTZBJSA-N cholic acid Chemical compound C([C@H]1C[C@H]2O)[C@H](O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H]([C@@H](CCC(O)=O)C)[C@@]2(C)[C@@H](O)C1 BHQCQFFYRZLCQQ-OELDTZBJSA-N 0.000 claims description 2
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 2
- 229920001249 ethyl cellulose Polymers 0.000 claims description 2
- BXWNKGSJHAJOGX-UHFFFAOYSA-N hexadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCO BXWNKGSJHAJOGX-UHFFFAOYSA-N 0.000 claims description 2
- 239000000787 lecithin Substances 0.000 claims description 2
- 229940067606 lecithin Drugs 0.000 claims description 2
- 235000010445 lecithin Nutrition 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920000193 polymethacrylate Polymers 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- 150000003505 terpenes Chemical group 0.000 claims description 2
- 235000007586 terpenes Nutrition 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 3
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 1
- 238000001802 infusion Methods 0.000 claims 1
- 239000000600 sorbitol Substances 0.000 claims 1
- PHYFQTYBJUILEZ-IUPFWZBJSA-N triolein Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(OC(=O)CCCCCCC\C=C/CCCCCCCC)COC(=O)CCCCCCC\C=C/CCCCCCCC PHYFQTYBJUILEZ-IUPFWZBJSA-N 0.000 claims 1
- 239000002518 antifoaming agent Substances 0.000 abstract 2
- 239000002041 carbon nanotube Substances 0.000 abstract 1
- 229910021393 carbon nanotube Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 229960004424 carbon dioxide Drugs 0.000 description 3
- 230000009477 glass transition Effects 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229940049964 oleate Drugs 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- NRHMKIHPTBHXPF-TUJRSCDTSA-M sodium cholate Chemical compound [Na+].C([C@H]1C[C@H]2O)[C@H](O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H]([C@@H](CCC([O-])=O)C)[C@@]2(C)[C@@H](O)C1 NRHMKIHPTBHXPF-TUJRSCDTSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The conductive additive comprises a conductive carbon material, a solvent, a dispersing agent and an antifoaming agent, wherein the component ratio of the conductive carbon material is 1 wt.% to 20 wt.%, the component ratio of the solvent is 58 wt.% to 99 wt.%, the component ratio of the dispersing agent is 0.1 wt.% to 20 wt.%, and the component ratio of the antifoaming agent is less than 2 wt.%, wherein the conductive carbon material is a carbon nanotube or graphene. The conductive carbon material is adopted, so that the conductive additive and the conductive paste have the characteristics of high conductivity, structural stability, low cost and the like, and when the conductive paste is prepared, the proportion of conductive silver powder can be reduced, and the required cost is further reduced.
Description
Technical field
It is used for solar battery process the present invention relates to a kind of chemical material for solar cell, more particularly to one kind
Conductive auxiliary agent and using the conductive auxiliary agent electrocondution slurry.
Background technology
The energy is generally divided into two kinds of the Depletion energy and regenerative resource, and commonly used now crude oil, natural gas, coal
And uranium etc. contains limited because of mineral products, therefore belong to the Depletion energy, its speed consumed is much larger than its reproduction speed, therefore exhausts performance
Source once exhausts, it is impossible to produce more can stand-by storage for future use so that the whole world faces the crisis of energy shortage；
And and, burn the carbon dioxide given off during using the Depletion energy so that global carbon dioxide discharge capacity increasingly increases, and two
Carbonoxide the negative greenhouse effects with Come, the formation of earth climatic ecology is had a strong impact on, therefore countries in the world are actively sought invariably
Look for alternative materials.The renewable sources of energy main at present include solar energy, waterpower, wind-force and biomass energy etc., because sunshine is without dirt
Contaminate, be available anywhere, it is inexhaustible, and solar energy equipment has security and characteristic easy for installation, therefore as the renewable sources of energy
In the industry that attracts most attention.
Most common solar cell is polysilicon solar cell in the market, and its structure is used as comprising one
The polysilicon semiconductor of battery and the conductive paste used as electrode, and the effect of conductive paste, are for collecting solar-electricity
Electric energy produced by pond, then transmit to outside battery.Electrocondution slurry plays the part of most angled key in the conversion efficiency of solar energy module
Color, can make solar cell obtain higher conversion efficiency.
Conductive paste used for solar batteries contains aluminium paste, silver paste and silver-colored three kinds of aluminium paste, and silver paste mainly regards the sun with Come
The front electrode of energy battery, aluminium paste increases battery conversion efficiency as backplate and electric field, and silver-colored aluminium paste is then applied to the sun
Can cell backside as module Chuan Even wire.
However, because argent belongs to consumptive material, its storage in nature can be as usage amount be with timely
Between increase and lasting reduction, its price also can with storage reduce and persistently raise up.
So that in the cost structure of solar cell, slurry is that in addition to Silicon Wafer, influence solar cell cost is most important
Material, estimation conductive paste accounts for the level of the cost about 10% of battery, and as polysilicon valency falls, following conductive paste account for battery into
This proportion is more and more high, therefore, how to reduce conductive paste cost and lifts the conductance of conductive paste, has become solar energy now
The problem that battery industry is faced.
The content of the invention
The main object of the present invention, is to reduce the process costs needed for solar cell.
For up to above-mentioned purpose, the present invention provides a kind of conductive auxiliary agent for solar battery process, including a conductive carbon
Material, a solvent, a dispersant and a defoamer, the component ratio of the conductive carbon material between 1wt.% between 20wt.%,
And the group that the conductive carbon material is constituted selected from CNT, graphene and combinations thereof, component ratio Jie of the solvent
In 58wt.% between 99wt.%, the component ratio of the dispersant between 0.1wt.% between 20wt.%, the froth breaking
The component ratio of agent<2wt.%.
For up to above-mentioned purpose, the present invention more provides a kind of electrocondution slurry for solar battery process, comprising one as above
State for the conductive auxiliary agent of solar battery process, a solidification resin, a conductive silver powder, a glass powder, a thixotroping
Agent and a wetting agent, the component ratio of the conductive auxiliary agent between 1wt.% between 30wt.%, the solidification resin
Component ratio is between 3wt.% between 10wt.%, and the component ratio of the conductive silver powder is between 50wt.% to 90wt.%
Between, the component ratio of the glass powder between 0.5wt.% to 5wt.%, the component ratio of the thixotropic agent between
0.5wt.% is between 5wt.%, and the component ratio of the wetting agent is between 0.5wt.% between 5wt.%.
Summary, the invention has the characteristics that：
First, because the conductive auxiliary agent and the electrocondution slurry contain the conductive carbon material, and CNT, graphene are simultaneous
Have high conductivity, the characteristic of structural stability, therefore can partly replace the usual conductive silver powder of existing solar energy technique.
2nd, because the conductive carbon material obtains convenient, and material cost is less than conductive silver powder body, therefore can reduce required technique
Cost, and remain to maintain due conductive characteristic.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Brief description of the drawings
Fig. 1, is the solar battery process flow chart of steps of the present invention.
Embodiment
The structural principle and operation principle of the present invention are described in detail below in conjunction with the accompanying drawings：
The present invention provides a kind of conductive auxiliary agent and its electrocondution slurry for solar battery process, the conductive auxiliary agent bag
Containing a conductive carbon material, a solvent, a dispersant and a defoamer, the component ratio of the conductive carbon material between 1wt.% extremely
Between 20wt.%, the component ratio of the solvent is between 58wt.% between 99wt.%, and the dispersant is to make described lead
Electrical carbon material be dispersed in the solvent and its component ratio between 0.1wt.% between 20wt.%, the defoamer
Component ratio<2wt.%, wherein, the conductive carbon material is CNT, graphene or both mixtures.
In one embodiment of the invention, the solvent can select alcohol, alcohol ester, terpenes, terpinol, phthalic acid two
Butyl ester (Dibutyl phthalate, DBP), butyl carbitol, turpentine oil, butyl glycol ether, butyl carbitol acetate, second
Glycol ether acetate, ATBC, butyl carbitol acetate, dibutyl phthalate, tributyl phosphate,
The chemical solvents such as dimethyl acetamide (Dimethylacetamide, DMAC), lauryl alcohol ester or ATBC, end regards institute
The species for stating the chemical raw material in electrocondution slurry selects suitable solvent with polarity, however it is not limited to above-mentioned to be carried；It is described scattered
Agent can select lauryl sodium sulfate, neopelex or cholate (Sodium cholate, NaC)；And the froth breaking
Agent then can select polyvinyl alcohol silicone co-polymer or the plain interfacial agent of nonionic ethoxyperfluoro.
In addition, the present invention more provides a kind of electrocondution slurry for solar battery process, it is to be helped using above-mentioned conduction
Agent, in addition to comprising the conductive auxiliary agent, the electrocondution slurry is also comprising a solidification resin, a conductive silver powder, a glass dust
Body, a thixotropic agent and a wetting agent, the component ratio of the conductive auxiliary agent between 1wt.% between 30wt.%, it is described solid
The component ratio of change resin is between 3wt.% between 10wt.%, and the component ratio of the conductive silver powder is between 50wt.%
To between 90wt.%, the component ratio of the glass powder between 0.5wt.% between 5wt.%, the glass powder into
Point ratio is between 0.5wt.% between 5wt.%, and the component ratio of the wetting agent is between 0.5wt.% between 5wt.%.
In one embodiment of the invention, the average grain diameter (D50) of the conductive silver powder is between 0.5 micron to 2 microns
Between, and shape can be spherical or sheet, the average grain diameter (D50) of the glass powder between 500 nanometers to 3 microns it
Between, and the glass powder glass transition temperature (Glass Transition Temperature, Tg) between 350 DEG C extremely
Between 500 DEG C, ethyl cellulose, polymethacrylates or alkyd resin, the thixotroping may be selected with resin in the solidification
Rilanit special derivative or polyamide wax may be selected in agent, and hexadecanol, octadecyl alcolol, sorbierite three may be selected in the wetting agent
Oleate, lecithin or terpinol.
The present invention more provides a kind of method that use electrocondution slurry prepares solar cell, and it is comprised the steps of：
S1：The conductive carbon material, the solvent, the dispersant and the defoamer are first mixed to form the conduction
Auxiliary agent, the component ratio of the conductive carbon material between 1wt.% between 20wt.%, the component ratio of the solvent between
58wt.% between 99wt.%, the component ratio of the dispersant between 0.1wt.% between 20wt.%, the defoamer
Component ratio<2wt.%, and the conductive carbon material is CNT, graphene or both mixtures.
S2：By the conductive auxiliary agent and the solidification resin, the conductive silver powder, the glass powder, described touch
Become agent and the wetting agent and be mixed to form the electrocondution slurry, the component ratio of the conductive auxiliary agent between 1wt.% extremely
Between 30wt.%, the component ratio of the solidification resin between 3wt.% between 10wt.%, the conductive silver powder
Component ratio between 50wt.% between 90wt.%, the component ratio of the glass powder between 0.5wt.% to 5wt.% it
Between, the component ratio of the glass powder between 0.5wt.% between 5wt.%, the component ratio of the wetting agent between
0.5wt.% is between 5wt.%.
S3：The electrocondution slurry is coated on a solar cell substrate, the pending solar base plate is formed.
S4：The pending solar base plate is subjected to one first sintering process, first sintering in a sintering furnace
The atmosphere of technique is air.The pending solar base plate is that one first sintering temperature is heated in the sintering furnace,
First sintering temperature is between 200 DEG C~500 DEG C.In first sintering process, having in the electrocondution slurry
Machine thing can be with oxygen reaction and removal of volatilizing.
S5：The pending solar base plate is subjected to one second sintering process in the sintering furnace, described second burns
The atmosphere for tying technique is a vacuum environment.The pending solar base plate is that one second burning is heated in the sintering furnace
Junction temperature, second sintering temperature is between 500 DEG C~1000 DEG C.In under second sintering process, due to described
Two sintering temperatures are higher than the glass transition temperature of the glass powder of the electrocondution slurry, therefore the glass powder can start to melt
Change, and then the conductive silver powder and the conductive carbon material in the electrocondution slurry is merged and is collectively forming conductive logical
Road.
In summary, the present invention has following features：
First, because the conductive auxiliary agent and the electrocondution slurry contain the conductive carbon material, and CNT, graphene are simultaneous
Tool high conductivity, the characteristic of structural stability, the conductive silver powder that can partly replace existing solar energy technique usual, and because of institute
State conductive carbon material and obtain convenient, and material cost is less than conductive silver powder body, therefore required process costs can be reduced, and remain to maintain
Due conductive characteristic.
2nd, by first sintering process and the difference of second sintering process in temperature and environmentally, it is to avoid
The conductive carbon material is decomposed under atmospheric environment because of the sintering process of high temperature.
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 change ought can be made according to the present invention by knowing those skilled in the art
Shape should all belong to the protection domain of appended claims of the invention.
Claims (10)
1. a kind of electrocondution slurry for solar battery process, it is characterised in that include：
One conductive auxiliary agent, the component ratio of the conductive auxiliary agent is between 1 wt.% between 30 wt.% and including a composition ratio
Example is between 1 wt.% to the conductive carbon material between 20 wt.%, and a component ratio is between 58 wt.% between 99 wt.%
Solvent, a component ratio are between 0.1 wt.% to the dispersant between 20 wt.% and a component ratio<2 wt.%'s disappears
Infusion, the percentage of the gross weight sum of conductive auxiliary agent each component is 100 wt.%, wherein the conductive carbon material is selected from nanometer
The group that carbon pipe, graphene and combinations thereof are constituted；
One solidification resin, the component ratio of the solidification resin is between 3 wt.% between 10 wt.%；
One conductive silver powder, the component ratio of the conductive silver powder is between 50 wt.% between 90 wt.%；
One glass powder, the component ratio of the glass powder is between 0.5 wt.% between 5 wt.%；
One thixotropic agent, the component ratio of the thixotropic agent is between 0.5 wt.% between 5 wt.%；And
One wetting agent, the component ratio of the wetting agent is between 0.5 wt.% between 5 wt.%；
Wherein, there is the electrocondution slurry first sintering temperature and atmosphere between 200 DEG C to 500 DEG C to be air prior to one
Sintering furnace in carry out one first sintering process, after the completion for the treatment of first sintering process, the electrocondution slurry has one to be situated between then at one
One second agglomerant is carried out in the second sintering temperature and atmosphere between 500 DEG C to 1000 DEG C is the sintering furnaces of vacuum environment
Skill.
2. it is used for the electrocondution slurry of solar battery process as claimed in claim 1, it is characterised in that the solvent is selected from
Terpenes, terpinol, dibutyl phthalate, butyl carbitol, turpentine oil, butyl glycol ether, butyl carbitol acetate,
Ethylene glycol ether acetate, ATBC, butyl carbitol acetate, dibutyl phthalate, tricresyl phosphate fourth
The group that ester, dimethyl acetamide, lauryl alcohol ester and ATBC are constituted.
3. it is used for the electrocondution slurry of solar battery process as claimed in claim 1, it is characterised in that the dispersant is selected from
The group constituted in lauryl sodium sulfate, neopelex and cholate.
4. it is used for the electrocondution slurry of solar battery process as claimed in claim 1, it is characterised in that the defoamer is selected from
In polyvinyl alcohol silicone co-polymer or the plain interfacial agent of nonionic ethoxyperfluoro.
5. it is used for the electrocondution slurry of solar battery process as claimed in claim 1, it is characterised in that the conductive silver powder
Average grain diameter between 0.5 micron to 2 microns.
6. it is used for the electrocondution slurry of solar battery process as claimed in claim 1, it is characterised in that the conductive silver powder
Be shaped as spherical or sheet.
7. it is used for the electrocondution slurry of solar battery process as claimed in claim 1, it is characterised in that the glass powder
Average grain diameter is between 500 nanometers to 3 microns.
8. it is used for the electrocondution slurry of solar battery process as claimed in claim 1, it is characterised in that the solidification resin
The group constituted selected from ethyl cellulose, polymethacrylates and alkyd resin.
9. it is used for the electrocondution slurry of solar battery process as claimed in claim 1, it is characterised in that the thixotropic agent is selected from
In any one of rilanit special derivative and polyamide wax.
10. it is used for the electrocondution slurry of solar battery process as claimed in claim 1, it is characterised in that the wetting agent choosing
From the group constituted in hexadecanol, octadecyl alcolol, sorbitol olein, lecithin and terpinol.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103138839A TW201618319A (en) | 2014-11-07 | 2014-11-07 | Conductive aid for fabrication process of solar cell, and conductive paste using the conductive aid |
| TW103138839 | 2014-11-07 |
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| Publication Number | Publication Date |
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| CN105845197A CN105845197A (en) | 2016-08-10 |
| CN105845197B true CN105845197B (en) | 2017-10-20 |
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| CN201510015862.6A Active CN105845197B (en) | 2014-11-07 | 2015-01-13 | Conductive additive for solar cell process and conductive paste thereof |
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| TW (1) | TW201618319A (en) |
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| CN110391040A (en) * | 2018-04-19 | 2019-10-29 | 无锡优顺能源开发科技有限公司 | A kind of photovoltaic cell electrocondution slurry |
| KR20200078172A (en) * | 2018-12-21 | 2020-07-01 | 삼성에스디아이 주식회사 | Composition for forming solar cell electrode and solar cell electrode prepared using the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201303895A (en) * | 2011-04-07 | 2013-01-16 | Lg Chemical Ltd | Ag paste composition for forming electrode and preparation method thereof |
| CN103839605A (en) * | 2014-02-26 | 2014-06-04 | 华中科技大学 | Electrocondution slurry and preparation method and application of electrocondution slurry |
| CN104078090A (en) * | 2013-03-28 | 2014-10-01 | 比亚迪股份有限公司 | Conductive paste for crystalline silicon solar cell and preparation method of conductive paste |
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| KR20110030539A (en) * | 2008-06-18 | 2011-03-23 | 바스프 에스이 | Process for producing electrodes for solar cells |
| US7976734B2 (en) * | 2008-09-10 | 2011-07-12 | E.I. Du Pont De Nemours And Company | Solar cell electrodes |
| JP5342910B2 (en) * | 2009-03-31 | 2013-11-13 | 三井化学株式会社 | Conductive paste composition and fired body |
| TWI484017B (en) * | 2012-12-11 | 2015-05-11 | Nat Univ Tsing Hua | Method for preparing a conductive paste |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201303895A (en) * | 2011-04-07 | 2013-01-16 | Lg Chemical Ltd | Ag paste composition for forming electrode and preparation method thereof |
| CN104078090A (en) * | 2013-03-28 | 2014-10-01 | 比亚迪股份有限公司 | Conductive paste for crystalline silicon solar cell and preparation method of conductive paste |
| CN103839605A (en) * | 2014-02-26 | 2014-06-04 | 华中科技大学 | Electrocondution slurry and preparation method and application of electrocondution slurry |
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| TW201618319A (en) | 2016-05-16 |
| TWI560896B (en) | 2016-12-01 |
| CN105845197A (en) | 2016-08-10 |
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Effective date of registration: 20220209 Address after: 14, 4, 61 new North Road, Xinzhuang, Taiwan, China Patentee after: Molecular Fusion Technology Co.,Ltd. Address before: 5 / F, No. 50-1, scientific research road, Zhunan Town, Miaoli County Patentee before: TAIWAN CARBON NANO TECHNOLOGY Corp. |