CN102592710A - Solar energy battery electrode-conducting silver slurry containing micron-size mixed silver powders - Google Patents
Solar energy battery electrode-conducting silver slurry containing micron-size mixed silver powders Download PDFInfo
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- CN102592710A CN102592710A CN2012100302661A CN201210030266A CN102592710A CN 102592710 A CN102592710 A CN 102592710A CN 2012100302661 A CN2012100302661 A CN 2012100302661A CN 201210030266 A CN201210030266 A CN 201210030266A CN 102592710 A CN102592710 A CN 102592710A
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- silver
- silver powder
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- silver paste
- silver powders
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 24
- 239000004332 silver Substances 0.000 title claims abstract description 24
- 239000002002 slurry Substances 0.000 title claims abstract description 16
- 239000000843 powder Substances 0.000 title abstract description 13
- 239000011521 glass Substances 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 16
- 239000000654 additive Substances 0.000 claims description 11
- 230000000996 additive effect Effects 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 230000003750 conditioning effect Effects 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 10
- 239000003960 organic solvent Substances 0.000 claims description 10
- 239000004014 plasticizer Substances 0.000 claims description 10
- 239000004094 surface-active agent Substances 0.000 claims description 10
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical group CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 claims description 10
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 8
- 239000004952 Polyamide Substances 0.000 claims description 6
- 229920002647 polyamide Polymers 0.000 claims description 6
- 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 5
- 235000013773 glyceryl triacetate Nutrition 0.000 claims description 5
- 239000001087 glyceryl triacetate Substances 0.000 claims description 5
- 229950008882 polysorbate Drugs 0.000 claims description 5
- 229920000136 polysorbate Polymers 0.000 claims description 5
- 229960002622 triacetin Drugs 0.000 claims description 5
- WUOACPNHFRMFPN-UHFFFAOYSA-N alpha-terpineol Chemical compound CC1=CCC(C(C)(C)O)CC1 WUOACPNHFRMFPN-UHFFFAOYSA-N 0.000 claims description 4
- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 claims description 4
- 229940116411 terpineol Drugs 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 3
- 238000005245 sintering Methods 0.000 abstract description 8
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- XNRNVYYTHRPBDD-UHFFFAOYSA-N [Si][Ag] Chemical compound [Si][Ag] XNRNVYYTHRPBDD-UHFFFAOYSA-N 0.000 abstract 1
- 239000000969 carrier Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 230000009466 transformation Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Abstract
The invention discloses solar energy battery electrode-conducting silver slurry containing micron-size mixed silver powders. The silver slurry comprises mixed silver powders, glass powders, organic carriers and mixed silver powders, wherein the mixed silver powders are composed of, by weight, 5% to 15% of silver powders with grain size from 0.1 micrometers to 1 micrometer, 30% to 50% of silver powders with grain size from 1 micrometer to 3 micrometers, and the balance silver powders with grain size from 3 micrometer to 6 micrometers. According to the solar energy battery electrode-conducting silver slurry containing micron-size mixed silver powders, the silver powders are high in tap density and can form dense net with excellent conducting performance after sintering so that the contact area of the silver silicon interface can be increased and the conversion efficiency of battery electrodes is high; the surface of the electrodes is smooth, and the electrodes have good in solderability and strong adhesive force.
Description
Technical field
The present invention relates to technical field of electronic materials, be specifically related to a kind of conductive silver paste of solar battery electrode that contains micron order mixing silver powder.
Background technology
Conductive silver paste of solar battery electrode is a key foundation material of producing the silicon solar photovoltaic cell, is a very crucial technical essential in the manufacture of solar cells.Slurry is processed the electrode of solar cell through silk screen printing, low temperature drying, high-sintering process.
Silver paste mainly is made up of raw materials such as silver powder, palladium powder, organic carrier and modifier according to a certain percentage.Wherein silver powder is conducting medium, and factors such as the size of silver powder, pattern and particle size distribution have very big influence to the electrical property of battery electrode.The specific area of the silver powder that particle is less is bigger, and the electrode surface that behind sintering, forms is fine and close, bright and clean.Also there are some researches show, to silver powder surface modification or mix other metal powder materials of part and can improve battery performance and play positive role.
Common on the market silver powder is that form has spherical type of ball shape silver powder, flake silver powder etc., and the I of granularity reaches nanoscale.CN20102054883 discloses a kind of crystal silicon solar energy battery with front grid conductive silver paste; Wherein silver powder is spherical silver powder; The grain diameter of this silver powder is 0.4～1 μ m, and tap density is 3.5～5.0g/ml, and made battery electrode electric conductivity and the non-oxidizability of this slurry is better.Along with deepening continuously of silver slurry research, be used to prepare the silver-colored silver powder of starching and no longer be single granularity, but the combination of the silver powder of multiple granularity.CN201010212064 discloses a kind of silver-colored paste composition that contains the nano-silver powder of 40～85% flake silver powder and 5～45%, and this slurry has excellent printing, forms good alloy with silicon chip behind the sintering, and the gate line electrode height is high.The silver powder granularity that above-mentioned silver powder system is adopted is less, not only agglomeration traits can occur, and this also directly causes the production cost of silver slurry higher.Therefore, be necessary the combined system of silver powder is improved.
Summary of the invention
The objective of the invention is to overcome the defective that exists in the prior art, a kind of conductive silver paste of solar battery electrode that contains micron order mixing silver powder is provided, after the silver powder sintering dwindles; Form fine and close conductive network; Electrode surface is bright and clean, and the solderability and the soldering resistance of electrode are better, and transformation efficiency is high.
For realizing above-mentioned purpose; Technical scheme of the present invention is: the silver slurry comprises mixing silver powder, glass dust, organic carrier; The granularity of consisting of of said mixing silver powder: 5～15wt% is that the silver powder particles of 0.1～1 μ m, the granularity of 30～50wt% are the silver powder particles of 1～3 μ m, and surplus is the silver powder particles of 3～6 μ m.
Optimized technical scheme is that said combined silver powder particles is spherical and/or type sphere.
Optimized technical scheme is that the composition of said conductive silver paste comprises: the mixing silver powder of 75～85wt%, the glass dust of 1～15wt% and the organic carrier of 5～15wt%.
Optimized technical scheme does, said conductive silver paste also comprises the additive of 0.1～5wt%, and said additive is Ta
2O
5, V
2O
5And MoO
3In at least a.
Optimized technical scheme does, contains organic solvent in the said organic carrier, also contain in the said organic carrier in thixotroping conditioning agent, plasticizer and the surfactant any one or multiple.
Optimized technical scheme does, said organic solvent is at least a in terpinol, terpineol and the ATBC.
Optimized technical scheme does; Said thixotroping conditioning agent is a rilanit special, or is polyamide wax, or is the composition of rilanit special and polyamide wax; Said plasticizer is a triacetin, and said surfactant is at least a in polysorbate, the dibutyl phthalate.
Advantage of the present invention and beneficial effect are: the silver powder tap density by the present invention's prescription is obtained is higher, can form the fine and close network with superior electrical conductivity ability behind the sintering, increases the contact area of silver-colored silicon interface, and the battery electrode transformation efficiency is high; The smooth surface of electrode, solderability and soldering resistance are good, and adhesive force is higher.
Embodiment
Below in conjunction with embodiment, specific embodiments of the invention further describes.Following examples only are used for technical scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
Embodiment 1
Silver slurry comprises and mix silver powder, glass dust, organic carrier, the consisting of of said mixing silver powder: the granularity of 5wt% is that the silver powder particles of 0.1～1 μ m, the granularity of 50wt% are the silver powder particles of 1～3 μ m, and 45% granularity is the silver powder particles of 3～6 μ m.
Wherein, said combined silver powder particles is spherical and/or type sphere.
Wherein, the composition of said conductive silver paste comprises: the mixing silver powder of 75wt%, the glass dust of 15wt% and the organic carrier of 5wt%.
Wherein, said conductive silver paste also comprises the additive of 5wt%, and said additive is MoO
3
Wherein, contain 55% organic solvent in the said organic carrier, also contain 20% thixotroping conditioning agent, 20% plasticizer and 5% surfactant in the said organic carrier.
Wherein, said organic solvent is the composition in terpinol and the ATBC, and weight ratio is 1: 1.
Wherein, said thixotroping conditioning agent is the composition of rilanit special and polyamide wax, and weight ratio is 2: 1, and said plasticizer is a triacetin, and said surfactant is a polysorbate.
Embodiment 2
Silver slurry comprises and mix silver powder, glass dust, organic carrier, the consisting of of said mixing silver powder: the granularity of 10wt% is that the silver powder particles of 0.1～1 μ m, the granularity of 40wt% are the silver powder particles of 1～3 μ m, and 50% granularity is the silver powder particles of 3～6 μ m.
Wherein, said combined silver powder particles is spherical and/or type sphere.
Wherein, the composition of said conductive silver paste comprises: the mixing silver powder of 80wt%, the glass dust of 7wt% and the organic carrier of 10wt%.
Wherein, said conductive silver paste also comprises the additive of 3wt%, and said additive is Ta
2O
5And MoO
3Composition, said weight ratio is 1: 1.
Wherein, contain 60% organic solvent in the said organic carrier, also contain 15% thixotroping conditioning agent, 24% plasticizer and 1% surfactant in the said organic carrier.
Wherein, said organic solvent is the composition in terpineol and the ATBC, and weight ratio is 1: 1.
Wherein, said thixotroping conditioning agent is a rilanit special, and said plasticizer is a triacetin, and said surfactant is the composition of polysorbate and dibutyl phthalate, and weight ratio is 1: 2.
Embodiment 3
Silver slurry comprises and mix silver powder, glass dust, organic carrier, the consisting of of said mixing silver powder: the granularity of 15wt% is that the silver powder particles of 0.1～1 μ m, the granularity of 30wt% are the silver powder particles of 1～3 μ m, and 55% granularity is the silver powder particles of 3～6 μ m.
Wherein, said combined silver powder particles is spherical and/or type sphere.
Wherein, the composition of said conductive silver paste comprises: the mixing silver powder of 85wt%, the glass dust of 1wt% and the organic carrier of 13wt%.
Wherein, said conductive silver paste also comprises the additive of 1wt%, and said additive is Ta
2O
5, V
2O
5And MoO
3Composition, weight ratio is 1: 1: 2.
Wherein, contain 63% organic solvent in the said organic carrier, also contain in the said organic carrier in the surfactant of 17% thixotroping conditioning agent, 15% plasticizer and 5% any one or multiple.
Wherein, said organic solvent is the composition in terpineol and the ATBC, and weight ratio is 1: 2.
Wherein, said thixotroping conditioning agent is a polyamide wax, and said plasticizer is a triacetin, and said surfactant is the composition of polysorbate and dibutyl phthalate, and weight ratio is 2: 1.
More than the silver powder of three embodiment form and to see the following form:
The preparation of silver slurry: silver powder, glass mixed powder and additive are fully mixed stirring, add organic carrier then, with three-roll grinder rolling 20～30 times, the slurry fineness is less than 10 μ m, and viscosity is 240～260Pas.
The preparation of solar battery sheet: adopt 325 order stainless (steel) wires printing front side silver paste, sintering under 880～950 ℃ sintering peak temperature obtains solar battery sheet front electrode and grid line.
Experimental result: battery sheet front electrode and screen smooth surface, battery sheet transformation efficiency＞18%, adhesive force＞5N.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from know-why of the present invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (7)
1. conductive silver paste of solar battery electrode that contains micron order mixing silver powder; It is characterized in that; Said silver slurry comprises mixing silver powder, glass dust, organic carrier; The granularity of consisting of of said mixing silver powder: 5～15wt% is that the silver powder particles of 0.1～1 μ m, the granularity of 30～50wt% are the silver powder particles of 1～3 μ m, and surplus is the silver powder particles of 3～6 μ m.
2. conductive silver paste as claimed in claim 1 is characterized in that, said combined silver powder particles is spherical and/or type sphere.
3. conductive silver paste as claimed in claim 2 is characterized in that, the composition of said conductive silver paste comprises: the mixing silver powder of 75～85wt%, the glass dust of 1～15wt% and the organic carrier of 5～15wt%.
4. conductive silver paste as claimed in claim 3 is characterized in that said conductive silver paste also comprises the additive of 0.1～5wt%, and said additive is Ta
2O
5, V
2O
5And MoO
3In at least a.
5. conductive silver paste as claimed in claim 4 is characterized in that, contains organic solvent in the said organic carrier, also contain in the said organic carrier in thixotroping conditioning agent, plasticizer and the surfactant any one or multiple.
6. conductive silver paste as claimed in claim 5 is characterized in that, said organic solvent is at least a in terpinol, terpineol and the ATBC.
7. conductive silver paste as claimed in claim 6; It is characterized in that; Said thixotroping conditioning agent is a rilanit special, or is polyamide wax, or is the composition of rilanit special and polyamide wax; Said plasticizer is a triacetin, and said surfactant is at least a in polysorbate, the dibutyl phthalate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210030266.1A CN102592710B (en) | 2012-02-13 | 2012-02-13 | Solar energy battery electrode-conducting silver slurry containing micron-size mixed silver powders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210030266.1A CN102592710B (en) | 2012-02-13 | 2012-02-13 | Solar energy battery electrode-conducting silver slurry containing micron-size mixed silver powders |
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| Publication Number | Publication Date |
|---|---|
| CN102592710A true CN102592710A (en) | 2012-07-18 |
| CN102592710B CN102592710B (en) | 2014-06-11 |
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|---|---|---|---|
| CN201210030266.1A Expired - Fee Related CN102592710B (en) | 2012-02-13 | 2012-02-13 | Solar energy battery electrode-conducting silver slurry containing micron-size mixed silver powders |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456801A (en) * | 2013-08-06 | 2013-12-18 | 浙江光达电子科技有限公司 | Silver paste on obverse side of silicon solar cell |
| CN103680678A (en) * | 2012-09-13 | 2014-03-26 | 达泰科技股份有限公司 | Silver paste comprising nano-silver particles and use thereof for manufacturing photovoltaic modules |
| CN103854718A (en) * | 2012-12-03 | 2014-06-11 | 西北稀有金属材料研究院 | Solar cell front electrode slurry material and preparation method thereof |
| CN103854719A (en) * | 2012-12-03 | 2014-06-11 | 西北稀有金属材料研究院 | Solar cell back electrode slurry material and preparation method thereof |
| CN104465116A (en) * | 2014-12-30 | 2015-03-25 | 中国科学院上海硅酸盐研究所 | Counter electrode of dye-sensitized solar cell and preparation method of counter electrode |
| CN104616721A (en) * | 2015-01-08 | 2015-05-13 | 安徽凤阳德诚科技有限公司 | High adhesive force of conductive silver paste |
| CN105474327A (en) * | 2013-07-09 | 2016-04-06 | 贺利氏德国有限责任两合公司 | An electro-conductive paste comprising Ag particles with a multimodal diameter distribution in the preparation of electrodes in MWT solar cells |
| CN106683744A (en) * | 2016-12-16 | 2017-05-17 | 苏州博望新能源科技有限公司 | Low-temperature sintering solar-cell back-electrode silver slurry |
| WO2017121740A1 (en) | 2016-01-15 | 2017-07-20 | Basf Se | Conductive paste |
| CN107052326A (en) * | 2017-02-20 | 2017-08-18 | 江苏瑞德新能源科技有限公司 | Micro silver powder and its preparation method and application |
| CN111739676A (en) * | 2020-08-13 | 2020-10-02 | 浙江奕成科技有限公司 | Back conductive silver paste for PERC solar cell and preparation method thereof |
| CN113113170A (en) * | 2021-04-14 | 2021-07-13 | 上海日御新材料科技有限公司 | Front electrode for battery |
| CN114530277A (en) * | 2022-03-23 | 2022-05-24 | 河北晶乐光电科技有限公司 | Back electrode silver paste composition, preparation method thereof and solar cell |
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Cited By (18)
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| CN103680678A (en) * | 2012-09-13 | 2014-03-26 | 达泰科技股份有限公司 | Silver paste comprising nano-silver particles and use thereof for manufacturing photovoltaic modules |
| CN103854719B (en) * | 2012-12-03 | 2016-05-04 | 西北稀有金属材料研究院 | A kind of rear surface of solar cell electrode slurry and preparation method thereof |
| CN103854718A (en) * | 2012-12-03 | 2014-06-11 | 西北稀有金属材料研究院 | Solar cell front electrode slurry material and preparation method thereof |
| CN103854719A (en) * | 2012-12-03 | 2014-06-11 | 西北稀有金属材料研究院 | Solar cell back electrode slurry material and preparation method thereof |
| CN103854718B (en) * | 2012-12-03 | 2016-03-30 | 西北稀有金属材料研究院 | A kind of front electrode of solar battery slurry and preparation method thereof |
| CN105474327B (en) * | 2013-07-09 | 2019-03-08 | 贺利氏德国有限责任两合公司 | Prepare the electroconductive paste comprising multimodal diameter distributed granule of MWT electrode of solar battery |
| CN105474327A (en) * | 2013-07-09 | 2016-04-06 | 贺利氏德国有限责任两合公司 | An electro-conductive paste comprising Ag particles with a multimodal diameter distribution in the preparation of electrodes in MWT solar cells |
| CN103456801A (en) * | 2013-08-06 | 2013-12-18 | 浙江光达电子科技有限公司 | Silver paste on obverse side of silicon solar cell |
| CN104465116A (en) * | 2014-12-30 | 2015-03-25 | 中国科学院上海硅酸盐研究所 | Counter electrode of dye-sensitized solar cell and preparation method of counter electrode |
| CN104616721B (en) * | 2015-01-08 | 2017-03-15 | 叶晓昱 | A kind of high adhesion force conductive silver paste |
| CN104616721A (en) * | 2015-01-08 | 2015-05-13 | 安徽凤阳德诚科技有限公司 | High adhesive force of conductive silver paste |
| WO2017121740A1 (en) | 2016-01-15 | 2017-07-20 | Basf Se | Conductive paste |
| CN106683744A (en) * | 2016-12-16 | 2017-05-17 | 苏州博望新能源科技有限公司 | Low-temperature sintering solar-cell back-electrode silver slurry |
| CN107052326A (en) * | 2017-02-20 | 2017-08-18 | 江苏瑞德新能源科技有限公司 | Micro silver powder and its preparation method and application |
| CN111739676A (en) * | 2020-08-13 | 2020-10-02 | 浙江奕成科技有限公司 | Back conductive silver paste for PERC solar cell and preparation method thereof |
| CN111739676B (en) * | 2020-08-13 | 2022-12-06 | 浙江奕成科技有限公司 | Back conductive silver paste for PERC solar cell and preparation method thereof |
| CN113113170A (en) * | 2021-04-14 | 2021-07-13 | 上海日御新材料科技有限公司 | Front electrode for battery |
| CN114530277A (en) * | 2022-03-23 | 2022-05-24 | 河北晶乐光电科技有限公司 | Back electrode silver paste composition, preparation method thereof and solar cell |
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| Publication number | Publication date |
|---|---|
| CN102592710B (en) | 2014-06-11 |
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