CN106782756B - One kind has infiltrative back field aluminum paste used for solar batteries and its preparation method and application - Google Patents
One kind has infiltrative back field aluminum paste used for solar batteries and its preparation method and application Download PDFInfo
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- CN106782756B CN106782756B CN201611254126.7A CN201611254126A CN106782756B CN 106782756 B CN106782756 B CN 106782756B CN 201611254126 A CN201611254126 A CN 201611254126A CN 106782756 B CN106782756 B CN 106782756B
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- Prior art keywords
- aluminium
- infiltrative
- paste
- solar batteries
- back field
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 239000004411 aluminium Substances 0.000 claims abstract description 45
- 239000000843 powder Substances 0.000 claims abstract description 16
- 239000011230 binding agent Substances 0.000 claims abstract description 12
- 239000007822 coupling agent Substances 0.000 claims abstract description 9
- 238000002161 passivation Methods 0.000 claims abstract description 8
- 230000035515 penetration Effects 0.000 claims abstract description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 6
- 239000001856 Ethyl cellulose Substances 0.000 claims description 5
- 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 5
- 229920001249 ethyl cellulose Polymers 0.000 claims description 5
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 5
- 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 5
- 238000002156 mixing Methods 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- 239000007767 bonding agent Substances 0.000 claims 1
- 239000000758 substrate Substances 0.000 abstract description 5
- -1 penetration aid Substances 0.000 abstract 1
- 238000005245 sintering Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000009466 transformation Effects 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- 229920005591 polysilicon Polymers 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XGULBQUJRQPLOG-OOOULUNWSA-N O([C@@H]1[C@@H](C)[C@H](O)CC(=O)O[C@@H]([C@H](/C=C(\C)/C=C/C(=O)[C@H](C)C[C@@H]1CC=O)COCC=1C=CC=CC=1)CC)[C@@H]1O[C@H](C)[C@@H](O)[C@H](N(C)C)[C@H]1O Chemical compound O([C@@H]1[C@@H](C)[C@H](O)CC(=O)O[C@@H]([C@H](/C=C(\C)/C=C/C(=O)[C@H](C)C[C@@H]1CC=O)COCC=1C=CC=CC=1)CC)[C@@H]1O[C@H](C)[C@@H](O)[C@H](N(C)C)[C@H]1O XGULBQUJRQPLOG-OOOULUNWSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- MPPQGYCZBNURDG-UHFFFAOYSA-N 2-propionyl-6-dimethylaminonaphthalene Chemical compound C1=C(N(C)C)C=CC2=CC(C(=O)CC)=CC=C21 MPPQGYCZBNURDG-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000003667 anti-reflective effect Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/022441—Electrode arrangements specially adapted for back-contact solar cells
-
- 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
It is more particularly to a kind of that there is infiltrative back field aluminum paste used for solar batteries and its preparation method and application the invention belongs to back field aluminum paste field used for solar batteries.Aluminium paste includes aluminium powder, penetration aid, coupling agent, binding agent, organic carrier;After battery back surface forms one layer of passivation layer, the aluminium paste is directly formed into electrode film by being screen printed onto on passive surface, dried, you can aluminium paste is infiltrated into the substrate surface of solar cell, form good Ohmic contact.
Description
Technical field
It is more particularly to a kind of that there is infiltrative solar cell the invention belongs to back field aluminum paste field used for solar batteries
With back field aluminum paste and its preparation method and application.
Background technology
Passivating film is the important component of crystal silicon solar energy battery, can reduce Carrier recombination, improves transformation efficiency;Also
Contact can be improved, reduce contact resistance, increase parallel resistance;Meanwhile it also has antireflective effect.
After battery back surface forms one layer of passivation layer, it is also necessary to will in the method on the passivating film using silk-screen printing
Aluminium paste is prepared into the contact of strip local and back point contact, because the presence of passivating film, under normal sintering state, and aluminium paste
It is difficult to penetrate passivating film, good Ohmic contact can not be formed, causes series resistance to increase, reduce cell piece photoelectric conversion effect
Rate.
In order that the back field aluminum paste and the substrate of solar cell that must print up have good Ohmic contact, collected current,
Often passivating film is handled as follows:Some holes through type are formed on passivating film by laser beam drilling method, so as to
Enable the aluminium paste coated in passivating film surface to realize with the substrate of solar cell by hole to contact, but this technology needs
It is high by a whole set of equipment, complex process, caused cost;Or can also be by chemical corrosion method on composite passivation film
There is the silicon pulp layer of point contact patterns using the silk-screen printing of silicon slurry, then eroded using chemical corrosion liquid in composite passivation film
The region not covered by silicon pulp layer, then upper aluminium paste, but chemical attack inevitably produces pollution again.
The content of the invention
In order to solve the above technical problems, the invention provides one kind to have infiltrative back field aluminum paste used for solar batteries,
Include in parts by weight:
Wherein, penetration aid is ammonium fluosilicate, and this patent is found after being pre-processed using the material to aluminium powder, can
It is effectively facilitated that aluminium powder penetrates through passivation layer and the substrate of solar cell forms good Ohmic contact,
Coupling agent is titanate coupling agent, is favorably improved the dispersiveness of aluminium powder in the slurry,
Binding agent is one in epoxide resin type binding agent, organic siliconresin type binding agent, xylene resin type binding agent
Kind or several combinations,
Organic carrier presses 1 by ethyl cellulose and terpinol:10 mass ratio is well mixed to be formed.
Present invention also offers a kind of preparation method of above-mentioned aluminium paste, concretely comprise the following steps:
(1) organic carrier is prepared,
Terpinol is heated to 65~75 DEG C under stirring, continues stirring to second after adding ethyl cellulose thereto
Base cellulose dissolution, naturally cool to normal temperature (25 DEG C, similarly hereinafter);
(2) aluminium powder is well mixed with penetration aid, obtains pretreated aluminium powder;
(3) coupling agent and fully dispersed is first added into the organic carrier of step (1), adds in step (2) what is obtained
Pretreated aluminium powder is sufficiently stirred, and is eventually adding binding agent and is uniformly mixing to obtain aluminium paste.
Present invention also offers a kind of application of above-mentioned aluminium paste:After battery back surface forms one layer of passivation layer, directly will
The aluminium paste forms electrode film by being screen printed onto on passive surface, drying.
The beneficial effects of the present invention are:Compared to existing aluminium paste paint-on technique, the present invention to battery component without entering
Row burn into, which destroys, can make aluminium paste infiltrate into the substrate surface of solar cell, form good Ohmic contact.Easy to operate,
It is pollution-free.
Embodiment
Embodiment 1
(1) organic carrier is prepared,
The terpinol of 25 parts by weight is heated to 70 DEG C under stirring, the ethyl for adding 2.5 parts by weight thereto is fine
Continue stirring after dimension element to be completely dissolved to ethyl cellulose, naturally cool to normal temperature;
(2) it is the aluminium powder of 72 parts by weight and the ammonium fluosilicate mixed grinding of 3 parts by weight is uniform, obtain pretreated aluminium
Powder;
(3) the coupling agent TMC-101 of 1.2 parts by weight and fully dispersed is first added in the organic carrier obtained to step (1),
Add in step (2) obtained pretreated aluminium powder to be sufficiently stirred, be eventually adding the electric slurry asphalt mixtures modified by epoxy resin of 4 parts by weight
Epoxy-type binding agent is uniformly mixing to obtain aluminium paste.
, directly will be manufactured in the present embodiment after the back surface of 125mm × 125mm monocrystalline silicon piece forms one layer of passivation layer
Aluminium paste is screen printed onto formation aluminium electrode film on passive surface by 250 mesh, enters 220 DEG C of drying of Muffle furnace, aluminium electrode after drying
Film layer is without coming off;Then another side printing front side silver paste is changed, enters Muffle furnace sintering, testing its electrical data after sintering is:It is average
Polysilicon solar cell photoelectric transformation efficiency is 22.4%.
Comparative example 1
Any ammonium fluosilicate is not added compared to embodiment 1, and remaining each component (and content), operation are the same as embodiment 1:
Directly by aluminium paste prepared by this comparative example by being screen printed onto formation aluminium electrode film on passive surface, specific behaviour
Make also with embodiment 1.Its electrical data is tested after sintering is:Average polysilicon solar cell photoelectric transformation efficiency is
10.6%.
Embodiment 2
(1) organic carrier is prepared,
The terpinol of 28 parts by weight is heated to 75 DEG C under stirring, the ethyl for adding 2.8 parts by weight thereto is fine
Continue stirring after dimension element to be completely dissolved to ethyl cellulose, naturally cool to normal temperature;
(2) it is the aluminium powder of 75 parts by weight and the ammonium fluosilicate mixed grinding of 3.5 parts by weight is uniform, obtain pretreated aluminium
Powder;
(3) the coupling agent TMC-101 of 1.4 parts by weight and fully dispersed is first added in the organic carrier obtained to step (1),
Add in step (2) obtained pretreated aluminium powder to be sufficiently stirred, be eventually adding the electric slurry organosilicon of 4 parts by weight
Resin type binding agent is uniformly mixing to obtain aluminium paste.
Directly by aluminium paste prepared by this comparative example by being screen printed onto formation aluminium electrode film on passive surface, specific behaviour
Make with embodiment 1.Its electrical data is tested after sintering is:Average polysilicon solar cell photoelectric transformation efficiency is 21.2%.
Comparative example 2
Using equimolar amounts " prodan " replace embodiment 2 in " ammonium fluosilicate ", remaining each component (and content),
Operation is the same as embodiment 2:
Directly by aluminium paste prepared by this comparative example by being screen printed onto formation aluminium electrode film on passive surface, specific behaviour
Make also with embodiment 2.Its electrical data is tested after sintering is:Average polysilicon solar cell photoelectric transformation efficiency is 9.8%.
Claims (6)
1. one kind has infiltrative back field aluminum paste used for solar batteries, it is characterised in that:Described aluminium paste is counted in parts by weight
Including,
Described penetration aid is ammonium fluosilicate.
2. there is infiltrative back field aluminum paste used for solar batteries as claimed in claim 1, it is characterised in that:Described coupling
Agent is titanate coupling agent.
3. there is infiltrative back field aluminum paste used for solar batteries as claimed in claim 1, it is characterised in that:Described bonding
Agent is one or more of groups in epoxide resin type binding agent, organic siliconresin type binding agent, xylene resin type binding agent
Close.
4. there is infiltrative back field aluminum paste used for solar batteries as claimed in claim 1, it is characterised in that:Described is organic
Carrier presses 1 by ethyl cellulose and terpinol:10 mass ratio is well mixed to be formed.
A kind of 5. preparation method of aluminium paste as described in any one of Claims 1-4, it is characterised in that:Described preparation method
For,
(1) organic carrier is prepared;
(2) aluminium powder is well mixed with penetration aid, obtains pretreated aluminium powder;
(3) coupling agent and fully dispersed is first added into the organic carrier of step (1), it is pre- to add in step (2) obtained warp
The aluminium powder of processing is sufficiently stirred, and is eventually adding binding agent and is uniformly mixing to obtain aluminium paste.
A kind of 6. application of aluminium paste as described in any one of Claims 1-4, it is characterised in that:Described application is, in battery
After back surface forms one layer of passivation layer, described aluminium paste is directly formed into electrode film by being screen printed onto on passive surface, dried.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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CN201611254126.7A CN106782756B (en) | 2016-12-30 | 2016-12-30 | One kind has infiltrative back field aluminum paste used for solar batteries and its preparation method and application |
PCT/CN2017/076572 WO2018120432A1 (en) | 2016-12-30 | 2017-03-14 | Aluminum paste with permeability for back surface field of solar cell, and preparation method therefor and use thereof |
Applications Claiming Priority (1)
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CN201611254126.7A CN106782756B (en) | 2016-12-30 | 2016-12-30 | One kind has infiltrative back field aluminum paste used for solar batteries and its preparation method and application |
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CN106782756A CN106782756A (en) | 2017-05-31 |
CN106782756B true CN106782756B (en) | 2018-01-26 |
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WO (1) | WO2018120432A1 (en) |
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CN111463142B (en) * | 2020-04-09 | 2023-03-24 | 浙江爱旭太阳能科技有限公司 | Method for efficiently detecting corrosion of PERC aluminum paste |
CN113362981B (en) * | 2021-06-15 | 2023-01-13 | 华中科技大学温州先进制造技术研究院 | Inorganic glass binder for P-type emission region silver-aluminum electrode slurry of N-type silicon solar cell |
CN117059303B (en) * | 2023-09-05 | 2024-04-16 | 江苏飞特尔通信有限公司 | Conductive aluminum paste for external electrode of LTCC filter and preparation method of conductive aluminum paste |
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CN101630695A (en) * | 2009-08-05 | 2010-01-20 | 贵研铂业股份有限公司 | Lead-free cadmium-free electrode slurry for crystalline silicon solar battery and preparation method thereof |
CN102097154A (en) * | 2010-11-25 | 2011-06-15 | 长沙族兴金属颜料有限公司 | Back surface field aluminium paste for solar cells |
CN102956730A (en) * | 2011-08-29 | 2013-03-06 | 比亚迪股份有限公司 | Solar cell back sheet, preparation method thereof and solar cell |
CN106098146A (en) * | 2016-07-08 | 2016-11-09 | 南通天盛新能源股份有限公司 | High-efficiency crystal silicon solar battery local back field aluminum paste and the application in PERC battery |
Family Cites Families (3)
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CN104094383A (en) * | 2011-08-22 | 2014-10-08 | 1366科技公司 | Formulation for acidic wet chemical etching of silicon wafers |
CN102314958A (en) * | 2011-08-31 | 2012-01-11 | 乐凯胶片股份有限公司 | Conductive aluminum paste used for crystalline-silicon solar-battery back electrode and preparation method thereof |
CN104157332A (en) * | 2014-08-29 | 2014-11-19 | 天津市职业大学 | Silicon solar cell front face electrode lead-free silver paste and preparing method thereof |
-
2016
- 2016-12-30 CN CN201611254126.7A patent/CN106782756B/en active Active
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2017
- 2017-03-14 WO PCT/CN2017/076572 patent/WO2018120432A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101630695A (en) * | 2009-08-05 | 2010-01-20 | 贵研铂业股份有限公司 | Lead-free cadmium-free electrode slurry for crystalline silicon solar battery and preparation method thereof |
CN102097154A (en) * | 2010-11-25 | 2011-06-15 | 长沙族兴金属颜料有限公司 | Back surface field aluminium paste for solar cells |
CN102956730A (en) * | 2011-08-29 | 2013-03-06 | 比亚迪股份有限公司 | Solar cell back sheet, preparation method thereof and solar cell |
CN106098146A (en) * | 2016-07-08 | 2016-11-09 | 南通天盛新能源股份有限公司 | High-efficiency crystal silicon solar battery local back field aluminum paste and the application in PERC battery |
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WO2018120432A1 (en) | 2018-07-05 |
CN106782756A (en) | 2017-05-31 |
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