CN103117104B - A kind of solar cell conductive paste that contains phthalic acid ester - Google Patents
A kind of solar cell conductive paste that contains phthalic acid ester Download PDFInfo
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- CN103117104B CN103117104B CN201210521941.0A CN201210521941A CN103117104B CN 103117104 B CN103117104 B CN 103117104B CN 201210521941 A CN201210521941 A CN 201210521941A CN 103117104 B CN103117104 B CN 103117104B
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Abstract
The invention discloses a kind of solar cell conductive paste that contains phthalic acid ester, it is to be made by the raw material of following weight parts: A expects 66-68, and B expects 18-22, phthalic acid ester 0.5-0.8, castor oil 1-2. The electrocondution slurry of gained of the present invention is not leaded, meet environmental requirement completely, be applied to the production of solar cell, can form strong adhesion in solar cell surface, cell photoelectric conversion efficiency is high, silver powder and the aluminium of different-grain diameter have been selected simultaneously, copper powder, increases interparticle contact area, thereby has improved the conductive capability of silver-colored slurry.
Description
Technical field
The present invention relates to fine Electronic field of chemicals, is exactly a kind of solar cell conductive paste that contains phthalic acid ester.
Background technology
Electrocondution slurry is electronic devices and components encapsulation, electrode and interconnected critical material, mainly comprises burning infiltration type electrocondution slurry and the large class of curing type conducting resinl (electrically conductive ink) two.
Burning infiltration type electrocondution slurry is mainly used in the industries such as solar cell, makes electrode and use after sintering, and curing type electrically conductive ink is widely used in the industry such as printed circuit and Electronic Packaging.
Electrocondution slurry basis filler difference wherein, can be divided into carbon slurry (graphite conductor), metal paste (bronze, silver powder, copper powder, yellow gold), and the ceramic size of modification.
, the electric conductivity of noble metal filler is best for Performance Ratio, and carbon slurry secondly. But the price of gold is too high, the oxidative resistance of copper powder is bad, and silver powder and silver-bearing copper powder are comparatively balanced in price and performance. Will getting well of the wearability silver slurry of carbon slurry.
Solar cell conductive paste is made up of silver powder, aluminium powder, inorganic bond material, organic carrier and relevant auxiliary agent etc. In most electric slurry, inorganic bond material is mainly the flint glass powder of low melting point, big for environment pollution and weldability is poor is its major defect. Therefore, the unleaded inexorable trend that become of electrocondution slurry.
Summary of the invention
The object of the present invention is to provide a kind of efficient, environmental protection, the unleaded solar cell conductive paste that contains phthalic acid ester.
Above-mentioned purpose realizes by following scheme:
A solar cell conductive paste that contains phthalic acid ester, is characterized in that, it is to be made by the raw material of following weight parts:
A expects 66-68, and B expects 18-22, phthalic acid ester 0.5-0.8, castor oil 1-2;
Described A material is made by the raw material of following weight parts: 1-5 μ m silver powder 38-42,11-15 μ m silver powder 20-25,16-25 μ m aluminium powder 10-15,1-5 μ m glass dust 11-13, organic carrier A22-25, silane coupler KH7921-2, octyl epoxy stearate 0.2-0.4;
Described B material is made by the raw material of following weight parts: 6-10 μ m copper powder 55-58,16-25 μ m bronze 10-15,20-25 μ m glass dust 8-10, organic carrier B15-20, organic silicone oil 0.5-1.2, epoxidized soybean oil 2-3;
Described glass dust is made by the raw material of following weight parts: Bi2O35-8,B2O37-9,Al2O35.2-6.6，SiO212-15,Sb2O34-6,Na2O11-15,K2O15-17,CuO7-9，AS2O34.3-6.7，Co2O34-6, trees ashes 7-9;
Described organic carrier A is made by the raw material of following weight parts: abietic resin 7-10, polyvinylpyrrolidone 2-4, BC acetate 22-24, isopropyl alcohol 5-8, polyvinyl alcohol 10-12, propane diols 3-5;
Described organic carrier B is made by the raw material of following weight parts: hydroxypropyl methylcellulose 6-8, isopropyl alcohol 18-22, propylene glycol monobutyl ether 10-12, di-2-ethylhexyl maleate 0.5-1.
Described a kind of solar cell conductive paste that contains phthalic acid ester, is characterized in that:
Preparation method comprises the following steps:
(1) take by weight and prepare the required each raw material of glass dust and put in silica crucible and mix, after put into electric furnace in 1100-1300 DEG C of sintering 1-2h, again the glass metal after gained fusing is poured in cold water, then ball milling, cross 200-300 mesh sieve, cooling, again at 500-600 DEG C of insulation 4-5h, then, quench by deionized water again, ball milling, cross the sieve of different meshes, collect and obtain 1-5 μ m glass dust and 20-25 μ m glass dust respectively, use respectively again 10-15% salt acid soak 1-2 hour, then clean to neutrality by deionized water, dry to such an extent that the glass dust of different-grain diameter is for subsequent use,
(2) by weight by preparing each raw material blending of organic carrier A, at 70-80 DEG C, be stirred to dissolving, the rear 100-200 order filter cloth of crossing obtains for subsequent use of organic carrier A;
(3) will prepare each raw material blending of organic carrier B by weight, at 75-85 DEG C, be stirred to and dissolve the rear 100-200 of mistake order filter cloth, obtain organic carrier B for subsequent use;
(4) the 1-5 μ m glass dust making is added in prepared organic carrier A by weight, stir and mix, then add all the other to prepare A material needed raw material, be uniformly mixed 2-3 hour, obtain A material;
(5) preparation B material needed raw material is uniformly mixed to 2-3 hour, obtains B material;
(6) raw material of the solar cell conductive paste that A material, B material and all the other preparations is contained to phthalic acid ester mixes by weight, and ball milling 7-9 hour, after crossing 400-500 mesh sieve and get final product.
Beneficial effect of the present invention is:
1, the electrocondution slurry of gained of the present invention is not leaded, meet environmental requirement completely, be applied to the production of solar cell, can form strong adhesion in solar cell surface, cell photoelectric conversion efficiency is high, silver powder and the aluminium of different-grain diameter have been selected simultaneously, copper powder powder, increases interparticle contact area, thereby has improved the conductive capability of silver-colored slurry;
2, the present invention has added copper powder in electrocondution slurry, aluminium powder can contribute to reduce silver slurry production cost, save a large amount of noble silvers, improve the electric conductivity of silver slurry simultaneously, thereby reached the object that reduces solar cell manufacturing cost, obtained good economic benefit. Technique of the present invention is simple simultaneously, and cost is low, thereby has broad application prospects.
Detailed description of the invention
A solar cell conductive paste that contains phthalic acid ester, it is to be made by the raw material of following weight parts (kg):
A material 67, B material 22, phthalic acid ester 0.8, castor oil 2;
Described A material is made by the raw material of following weight parts: 1-5 μ m silver powder 42,11-15 μ m silver powder 25,16-25 μ m aluminium powder 15,1-5 μ m glass dust 13, organic carrier A25, silane coupler KH7922, octyl epoxy stearate 0.4;
Described B material is made by the raw material of following weight parts: 6-10 μ m copper powder 58,16-25 μ m bronze 15,20-25 μ m glass dust 10, organic carrier B20, organic silicone oil 1.2, epoxidized soybean oil 3;
Described glass dust is made by the raw material of following weight parts: Bi2O38,B2O39,Al2O36.6，SiO215,Sb2O36,Na2O15,K2O17,CuO9，AS2O36.7，Co2O36, trees ashes 9;
Described organic carrier A is made by the raw material of following weight parts: abietic resin 10, polyvinylpyrrolidone 4, BC acetate 24, isopropyl alcohol 8, polyvinyl alcohol 12, propane diols 5;
Described organic carrier B is made by the raw material of following weight parts: hydroxypropyl methylcellulose 8, isopropyl alcohol 22, propylene glycol monobutyl ether 12, di-2-ethylhexyl maleate 1.
Described a kind of solar cell conductive paste that contains phthalic acid ester, preparation method comprises the following steps:
(1) take by weight and prepare the required each raw material of glass dust and put in silica crucible and mix, after put into electric furnace in 1300 DEG C of sintering 2h, again the glass metal after gained fusing is poured in cold water, then ball milling, cross 300 mesh sieves, cooling, at 600 DEG C of insulation 5h, then, then quench by deionized water again, ball milling, cross the sieve of different meshes, collect and obtain 1-5 μ m glass dust and 20-25 μ m glass dust respectively, then the salt acid soak that is 11% by concentration respectively 2 hours, then clean to neutrality by deionized water, dry to such an extent that the glass dust of different-grain diameter is for subsequent use;
(2) by weight by preparing each raw material blending of organic carrier A, at 70 DEG C, be stirred to dissolving, rear mistake 200 order filter clothes obtain for subsequent use of organic carrier A;
(3) will prepare each raw material blending of organic carrier B by weight, at 85 DEG C, be stirred to and dissolve the rear 100 order filter clothes of crossing, obtain organic carrier B for subsequent use;
(4) the 1-5 μ m glass dust making is added in prepared organic carrier A by weight, stir and mix, then add all the other to prepare A material needed raw material, be uniformly mixed 3 hours, obtain A material;
(5) preparation B material needed raw material is uniformly mixed to 2 hours, obtains B material;
(6) raw material of the solar cell conductive paste that A material, B material and all the other preparations is contained to phthalic acid ester mixes by weight, and ball milling 9 hours, after crossing 500 mesh sieves and get final product.
Adopt screen process press that silver slurry is printed on 125mm × 125mmSi substrate, then dry at 180 DEG C, carry out quick fired electrodes lead-in wire at 880 DEG C again, the contact conductor surface silvery white of making after high temperature sintering, smooth zero defect, peel strength 15N/cm, soldering is functional, sheet resistance < 10Siements/sq, the solar cell photoelectric transformation efficiency of preparation is 18.3%, tensile test result is adhesive force > 12N/mm2。
Claims (2)
1. a solar cell conductive paste that contains phthalic acid ester, is characterized in that, it is to be made by the raw material of following weight parts: A expects 66-68, and B expects 18-22, phthalic acid ester 0.5-0.8, castor oil 1-2;
Described A material is made by the raw material of following weight parts: 1-5 μ m silver powder 38-42,11-15 μ m silver powder 20-25,16-25 μ m aluminium powder 10-15,1-5 μ m glass dust 11-13, organic carrier A22-25, silane coupler KH7921-2, octyl epoxy stearate 0.2-0.4;
Described B material is made by the raw material of following weight parts: 6-10 μ m copper powder 55-58,16-25 μ m bronze 10-15,20-25 μ m glass dust 8-10, organic carrier B15-20, organic silicone oil 0.5-1.2, epoxidized soybean oil 2-3;
Described glass dust is made by the raw material of following weight parts: Bi2O35-8,B2O37-9,Al2O35.2-6.6，SiO212-15,Sb2O34-6,Na2O11-15,K2O15-17,CuO7-9，As2O34.3-6.7，Co2O34-6, trees ashes 7-9;
Described organic carrier A is made by the raw material of following weight parts: abietic resin 7-10, polyvinylpyrrolidone 2-4, BC acetate 22-24, isopropyl alcohol 5-8, polyvinyl alcohol 10-12, propane diols 3-5;
Described organic carrier B is made by the raw material of following weight parts: hydroxypropyl methylcellulose 6-8, isopropyl alcohol 18-22, propylene glycol monobutyl ether 10-12, di-2-ethylhexyl maleate 0.5-1.
2. a kind of solar cell conductive paste that contains phthalic acid ester according to claim 1, is characterized in that: preparation method comprises the following steps:
(1) take by weight and prepare the required each raw material of glass dust and put in silica crucible and mix, after put into electric furnace in 1100-1300 DEG C of sintering 1-2h, again the glass metal after gained fusing is poured in cold water, then ball milling, cross 200-300 mesh sieve, cooling, again at 500-600 DEG C of insulation 4-5h, then, quench by deionized water again, ball milling, cross the sieve of different meshes, collect and obtain 1-5 μ m glass dust and 20-25 μ m glass dust respectively, use respectively again 10-15% salt acid soak 1-2 hour, then clean to neutrality by deionized water, dry to such an extent that the glass dust of different-grain diameter is for subsequent use,
(2) by weight by preparing each raw material blending of organic carrier A, at 70-80 DEG C, be stirred to dissolving, the rear 100-200 order filter cloth of crossing, obtains organic carrier A for subsequent use;
(3) will prepare each raw material blending of organic carrier B by weight, at 75-85 DEG C, be stirred to and dissolve the rear 100-200 of mistake order filter cloth, obtain organic carrier B for subsequent use;
(4) the 1-5 μ m glass dust making is added in prepared organic carrier A by weight, stir and mix, then add all the other to prepare A material needed raw material, be uniformly mixed 2-3 hour, obtain A material;
(5) preparation B material needed raw material is uniformly mixed to 2-3 hour, obtains B material;
(6) raw material of the solar cell conductive paste that A material, B material and all the other preparations is contained to phthalic acid ester mixes by weight, and ball milling 7-9 hour, after crossing 400-500 mesh sieve and get final product.
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| CN201210521941.0A CN103117104B (en) | 2012-12-07 | 2012-12-07 | A kind of solar cell conductive paste that contains phthalic acid ester |
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| CN201210521941.0A CN103117104B (en) | 2012-12-07 | 2012-12-07 | A kind of solar cell conductive paste that contains phthalic acid ester |
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| CN103117104B true CN103117104B (en) | 2016-05-11 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101373646A (en) * | 2008-10-09 | 2009-02-25 | 彩虹集团公司 | Middle and low temperature curing conductive silver slurry |
| CN102723121A (en) * | 2011-11-11 | 2012-10-10 | 长兴化学工业股份有限公司 | Conductive adhesive composition for solar cell and solar cell module thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100955496B1 (en) * | 2009-07-09 | 2010-04-30 | 주식회사 동진쎄미켐 | Conductive composition for forming electrode of solar cell |
| EP2504844A1 (en) * | 2009-11-25 | 2012-10-03 | E.I. Du Pont De Nemours And Company | Aluminum pastes and use thereof in the production of passivated emitter and rear contact silicon solar cells |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101373646A (en) * | 2008-10-09 | 2009-02-25 | 彩虹集团公司 | Middle and low temperature curing conductive silver slurry |
| CN102723121A (en) * | 2011-11-11 | 2012-10-10 | 长兴化学工业股份有限公司 | Conductive adhesive composition for solar cell and solar cell module thereof |
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Effective date of registration: 20181219 Address after: 401120 Chongqing Yubei District Shuangfeng Bridge Street 3 East Road 7 buildings Patentee after: Chongqing Beijing Great Automotive Components Company Limited Address before: 233000 No. 112 Nanshan Road, Bengbu City, Anhui Province, 4-1 Patentee before: Bengbu City Zhifeng Science & Technology Co., Ltd. |
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Effective date of registration: 20201113 Address after: No. ZC030, College Students Pioneer Park, Tongling City, Anhui Province, 244000 Patentee after: TONGLING HUIHENG ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 401120 No. 7, East Airport Road, Shuangfengqiao Street, Yubei District, Chongqing Patentee before: Chongqing Beijing Great Automotive Components Co.,Ltd. |
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