CN106847367A - A kind of front electrode of solar battery conductive silver paste and preparation method thereof - Google Patents
A kind of front electrode of solar battery conductive silver paste and preparation method thereof Download PDFInfo
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- CN106847367A CN106847367A CN201710166077.XA CN201710166077A CN106847367A CN 106847367 A CN106847367 A CN 106847367A CN 201710166077 A CN201710166077 A CN 201710166077A CN 106847367 A CN106847367 A CN 106847367A
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- silver powder
- solar battery
- weight
- front electrode
- silver paste
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 239000011521 glass Substances 0.000 claims abstract description 19
- 238000005245 sintering Methods 0.000 claims abstract description 17
- 238000005530 etching Methods 0.000 claims abstract description 14
- 239000003112 inhibitor Substances 0.000 claims abstract description 14
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002002 slurry Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 9
- PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium oxide Inorganic materials [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 4
- 229910019714 Nb2O3 Inorganic materials 0.000 claims abstract description 3
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 claims abstract description 3
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims abstract description 3
- RSEIMSPAXMNYFJ-UHFFFAOYSA-N europium(III) oxide Inorganic materials O=[Eu]O[Eu]=O RSEIMSPAXMNYFJ-UHFFFAOYSA-N 0.000 claims abstract description 3
- JYTUFVYWTIKZGR-UHFFFAOYSA-N holmium oxide Inorganic materials [O][Ho]O[Ho][O] JYTUFVYWTIKZGR-UHFFFAOYSA-N 0.000 claims abstract description 3
- FKTOIHSPIPYAPE-UHFFFAOYSA-N samarium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Sm+3].[Sm+3] FKTOIHSPIPYAPE-UHFFFAOYSA-N 0.000 claims abstract description 3
- FIXNOXLJNSSSLJ-UHFFFAOYSA-N ytterbium(III) oxide Inorganic materials O=[Yb]O[Yb]=O FIXNOXLJNSSSLJ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000428 dust Substances 0.000 claims description 17
- 239000002245 particle Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 4
- 229910052714 tellurium Inorganic materials 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 238000000227 grinding Methods 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 abstract description 10
- 239000010703 silicon Substances 0.000 abstract description 10
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 abstract description 6
- 230000009466 transformation Effects 0.000 abstract description 2
- 239000000969 carrier Substances 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 239000013078 crystal Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 7
- 229910052709 silver Inorganic materials 0.000 description 6
- 239000004332 silver Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Inorganic materials O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000012429 reaction media Substances 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
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/14—Conductive material dispersed in non-conductive inorganic material
- H01B1/16—Conductive material dispersed in non-conductive inorganic 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
-
- 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 present invention relates to a kind of solar battery front side conductive silver paste and preparation method thereof.The electrocondution slurry is included：Based on the 95wt% silver powder of conductive silver paste gross weight meter 65,0.2 8wt%Pb Te/Bi Te glass frits, 2 20wt% organic carriers and 0.02 6wt% sintering etching inhibitor composition；Described silver powder spherical silver powder and nanometer dendritic silver powder mixture for chemical method is obtained, sintering etching inhibitor it is main by metal and its compound such as：SnO2、CeO2、Sb2O3、Nb2O3、V2O5、MoO3、WO2、Nd2O3、Y2O3、Nd2O3、Ho2O3、Sm2O3、Eu2O3、Yb2O3Deng one or more mixture composition.The conductive silver paste that the present invention is obtained can be effectively reduced ohmic contact resistance on the crystal-silicon battery slice of high square resistance, improve transformation efficiency.
Description
Technical field
The present invention relates to technical field of solar batteries, especially a kind of crystal silicon solar batteries front electrode conductive silver paste
And preparation method thereof.
Background technology
Solar power generation is clean green energy resource, and its continuous generating dutation is long not to produce any harmful substance.Conductive paste
Material（Front side silver paste, back side silver paste and back side aluminium paste）It is the crucial auxiliary material of crystal silicon solar battery, to the opto-electronic conversion of battery
Efficiency and cost have a major impact.Currently, the research in the field concentrates on the generating efficiency and reduction solar energy for improving cell piece
The cost of manufacture of cell piece.Cell piece front side conductive silver paste serves the effect of collected current and conduction electric current, is cell piece life
Important part in product cost.The conductive silver slurry requirement for making front electrode of solar battery is formed well with silicon chip
Ohmic contact, and transmit photogenerated current, and the performance and destruction P-N junction of semiconductor can not be influenceed.
The requirement for putting forward effect and low cost for the industry makes the invention provides a kind of suitable crystal silicon solar front side silver paste
Sintering etches inhibitor, and the slurry being made using this additive can reduce contact resistance, further improve solar energy
The conversion efficiency of battery.
The content of the invention
In order to overcome the shortcomings of existing technology, the invention provides a kind of front electrode of solar battery conductive silver paste and
Its preparation method.
The technical solution adopted for the present invention to solve the technical problems is：A kind of front electrode of solar battery conductive silver
Slurry, following component is included in its formula composition：
Silver powder, part by weight is 65-95wt%；
Glass dust, part by weight is 0.2-8wt%；
Organic carrier, part by weight is 2-20wt%；
Sintering etching inhibitor, percentage by weight is 0.02-6wt%.
According to one embodiment of present invention, further include, the glass dust is lead-tellurium system or bismuth-tellurium system crystal
Compound powder, softening point is 350 DEG C ~ 500 DEG C.
According to one embodiment of present invention, further include, the glass dust is spherical, spherical, anomocytic type
More than the one or two kinds of in grain, its particle size is 0.01-5.0 μm.
According to one embodiment of present invention, further include, the silver powder spherical silver powder and nanometer for chemical method is obtained
Dendritic silver powder mixture, both spherical silver powder and the dendritic silver powder of nanometer ratio 90:0.1-60:30；Wherein spherical silver powder particles chi
Very little is 0.1-6 μm, tap density 5.5-6.5g/cm3 。
According to one embodiment of present invention, further include, the sintering etching inhibitor is selected from metal and its chemical combination
Thing is such as：SnO2、CeO2、Sb2O3、Nb2O3、MoO3、WO2、Nd2O3、Y2O3、 Nd2O3、Ho2O3、Sm2O3、Eu2O3、Yb2O3In two
Plant or two or more.
According to one embodiment of present invention, further include, the particle size range of the sintering etching inhibitor is sub-micro
Meter level or nanoscale.
A kind of preparation method of front electrode of solar battery conductive silver paste, comprises the following steps：It is 100 according to gross weight
Calculate, silver powder part by weight is 65-95wt%, glass dust part by weight is 0.2-8wt%, and organic carrier part by weight is 2-
20wt%；Sintering etching inhibitor percentage by weight is 0.02-6wt%, weighs the material in formula；Glass dust, the burning that will be weighed
Knot etching inhibitor, silver powder and organic carrier are mixed, are disperseed and filtration treatment through rolling, obtain solar battery front side electricity
Pole electrocondution slurry.
The sintering etching inhibitor of application of the invention, there is provided carried out at interface with glass dust in intensification sintering process
Physical and chemical reaction（Including but not limited to fusing, decomposition, diffusion, crystallization, oxidation and phase transformation etc.）Reaction medium, reduce
Contact and etching reaction of the glass dust to semiconductor substrate, prevent from cutting through P-N junction, while conductive particle can be provided（Silver powder）With
Combination between semiconductor substrate.The slurry being made using this additive is applied in the shallower crystal-silicon battery slice of high square resistance, P-N junction
On can effectively prevent P-N junction destroy, while reduce contact resistance, further improve solar cell conversion efficiency.
Specific embodiment
Embodiment one：
By each component percentage by weight：Spherical silver powder 85wt%, nanometer dendritic silver powder 2wt%, glass dust 2.6wt%, organic carrier
10wt% and 0.2wt% Nd2O3With 0.2wt% Sb2O3Weigh each component raw material.By above-described Nd2O3And Sb2O3With glass dust
It is pre-mixed；Add organic carrier to be well mixed, add metal powder and stir, it is small to be ground to particle diameter by three-roll grinder
In 5 μm, crystal silicon solar batteries front electrode electrocondution slurry is filtrated to get.Result such as table 1.
Embodiment two：
By each component percentage by weight：Spherical silver powder 86wt%, nanometer dendritic silver powder 2wt%, glass dust 2.6wt%, organic carrier
9wt%, 0.2wt%SnO2And 0.2wt%V2O5Weigh each component raw material.By above-described SnO2And V2O5Powder and glass dust are pre-
First mix；Then, add airborne body to be well mixed, add metal powder and stir, particle diameter is ground to by three-roll grinder
Less than 5 μm, crystal silicon solar batteries front electrode electrocondution slurry is filtrated to get.Result such as table 1.
Embodiment three：
By each component percentage by weight：Spherical silver powder 87wt%, nanometer dendritic silver powder 2wt%, glass dust 2.5wt%, organic carrier
8wt% and MoO3 0.2wt%、CeO20.3wt%；Weigh each component raw material.By above-described MoO3 And CeO2Powder and glass
Powder is pre-mixed；Then, add airborne body to be well mixed, add metal powder and stir, be ground to by three-roll grinder
Particle diameter is less than 5 μm, obtains crystal silicon solar batteries front electrode electrocondution slurry.Result such as table 1.
By being screen printed onto printing solar cell back side silver paste, aluminium paste, 300 DEG C on 156*156mm monocrystalline silicon substrates
Drying, then at front printing examples detailed above gained front side silver paste and the silver paste of the no added sintering inhibitor of contrast groups, peak temperature
900 DEG C of sintering, measure monocrystaline silicon solar cell efficiency, as a result such as table 1.
The electric performance test result of slurry in the example of table 1 on single crystal battery piece
Note：Voc is open-circuit voltage；Isc is short circuit current；Rs is series resistance；Rsh is parallel resistance；
FF is fill factor, curve factor.
The slurry series resistance that table 1 can be seen that after addition sintering inhibitor significantly decreases, while filling and efficiency
There is obvious advantage.
Claims (7)
1. a kind of front electrode of solar battery conductive silver paste, it is characterised in that include following component in its formula composition：
Silver powder, part by weight is 65-95wt%；
Glass dust, part by weight is 0.2-8wt%；
Organic carrier, part by weight is 2-20wt%；
Sintering etching inhibitor, percentage by weight is 0.02-6wt%.
2. front electrode of solar battery conductive silver paste according to claim 1, it is characterized in that, the glass dust be lead-
Tellurium system or bismuth-tellurium system crystalline compounds, softening point are 350 DEG C ~ 500 DEG C.
3. front electrode of solar battery conductive silver paste according to claim 1, it is characterized in that, the glass dust is ball
More than the one or two kinds of in shape, spherical, anomocytic type particle, its particle size is 0.01-5.0 μm.
4. front electrode of solar battery conductive silver paste according to claim 1, it is characterized in that, the silver powder is chemical method
Spherical silver powder and nanometer dendritic silver powder mixture, both spherical silver powder and the dendritic silver powder of nanometer ratio 90 is obtained:0.1-60:30；
Wherein spherical silver powder particles size is 0.1-6 μm, tap density 5.5-6.5g/cm3 。
5. front electrode of solar battery conductive silver paste according to claim 1, it is characterized in that, the sintering etching suppresses
Agent is selected from metal and its compound such as：SnO、CeO2、Sb2O3、Nb2O3、MoO3、WO2、Nd2O3、Y2O3、 Nd2O3、Ho2O3、Sm2O3、
Eu2O3、Yb2O3In two or more.
6. front electrode of solar battery conductive silver paste according to claim 5, it is characterized in that, the sintering etching suppresses
The particle size range of agent is submicron order or nanoscale.
7. the preparation method of a kind of front electrode of solar battery conductive silver paste according to claim any one of 1-6, its
It is characterized in comprise the following steps：It is 100 calculating according to gross weight, silver powder part by weight is 65-95wt%, glass dust part by weight
It is 0.2-8wt%, organic carrier part by weight is 2-20wt%；Sintering etching inhibitor percentage by weight is 0.02-6wt%, is weighed
Material in formula；Glass dust, sintering etching inhibitor, silver powder and the organic carrier that will be weighed are mixed, rolling grinding point
Dissipate and filtration treatment, obtain front electrode of solar battery electrocondution slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710166077.XA CN106847367A (en) | 2017-03-20 | 2017-03-20 | A kind of front electrode of solar battery conductive silver paste and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710166077.XA CN106847367A (en) | 2017-03-20 | 2017-03-20 | A kind of front electrode of solar battery conductive silver paste and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106847367A true CN106847367A (en) | 2017-06-13 |
Family
ID=59129559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710166077.XA Pending CN106847367A (en) | 2017-03-20 | 2017-03-20 | A kind of front electrode of solar battery conductive silver paste and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN106847367A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616238A (en) * | 2018-12-25 | 2019-04-12 | 苏州柏特瑞新材料有限公司 | A kind of low-temperature sintering PERC crystal silicon solar batteries positive silver paste and preparation method thereof |
| TWI689481B (en) * | 2017-11-06 | 2020-04-01 | 南韓商ＬＳ Ｎｉｋｋｏ銅製鍊股份有限公司 | Conductive paste for solar cell's electrode and solar cell using the same |
| CN113077922A (en) * | 2021-03-29 | 2021-07-06 | 浙江奕成科技有限公司 | Silver paste containing spheroidized glass powder and crystalline silicon solar cell manufactured by using silver paste |
| CN114038608A (en) * | 2021-12-24 | 2022-02-11 | 西安宏星电子浆料科技股份有限公司 | Low-resistivity solar cell conductive paste |
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| CN102646459A (en) * | 2012-05-23 | 2012-08-22 | 湖南利德电子浆料有限公司 | Silver paste for front face of mixed silver powder crystalline silicon based solar battery and preparation method thereof |
| CN103650238A (en) * | 2013-03-22 | 2014-03-19 | 深圳首创光伏有限公司 | Electrocondution slurry of positive electrode of solar cell and preparing method thereof |
| CN104979035A (en) * | 2015-06-26 | 2015-10-14 | 武汉优乐光电科技有限公司 | Lead-free composite glass adhesive solar battery positive silver paste |
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| 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 |
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2017
- 2017-03-20 CN CN201710166077.XA patent/CN106847367A/en active Pending
Patent Citations (5)
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| CN102646459A (en) * | 2012-05-23 | 2012-08-22 | 湖南利德电子浆料有限公司 | Silver paste for front face of mixed silver powder crystalline silicon based solar battery and preparation method thereof |
| CN103650238A (en) * | 2013-03-22 | 2014-03-19 | 深圳首创光伏有限公司 | Electrocondution slurry of positive electrode of solar cell and preparing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI689481B (en) * | 2017-11-06 | 2020-04-01 | 南韓商ＬＳ Ｎｉｋｋｏ銅製鍊股份有限公司 | Conductive paste for solar cell's electrode and solar cell using the same |
| CN109616238A (en) * | 2018-12-25 | 2019-04-12 | 苏州柏特瑞新材料有限公司 | A kind of low-temperature sintering PERC crystal silicon solar batteries positive silver paste and preparation method thereof |
| CN113077922A (en) * | 2021-03-29 | 2021-07-06 | 浙江奕成科技有限公司 | Silver paste containing spheroidized glass powder and crystalline silicon solar cell manufactured by using silver paste |
| CN114038608A (en) * | 2021-12-24 | 2022-02-11 | 西安宏星电子浆料科技股份有限公司 | Low-resistivity solar cell conductive paste |
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Application publication date: 20170613 |