CN103117109A - Lead-free solar cell silver aluminum copper powder mixed paste containing graphite powder - Google Patents
Lead-free solar cell silver aluminum copper powder mixed paste containing graphite powder Download PDFInfo
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- CN103117109A CN103117109A CN2012105219868A CN201210521986A CN103117109A CN 103117109 A CN103117109 A CN 103117109A CN 2012105219868 A CN2012105219868 A CN 2012105219868A CN 201210521986 A CN201210521986 A CN 201210521986A CN 103117109 A CN103117109 A CN 103117109A
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Abstract
The invention discloses lead-free solar cell silver aluminum copper powder mixed paste containing graphite powder. The lead-free solar cell silver aluminum copper powder mixed paste containing the graphite powder is prepared by the following raw materials: by weight, A materials 60-65, B materials 20-25, C materials 10-15, dimethyl phthalate (DMP) 2-3, graphite powder 0.3-0.6, and silicone oil 0.5-1. Due to the fact that lead is not contained, the lead-free solar cell silver aluminum copper powder mixed paste containing the graphite powder completely conforms to the requirements of environmental protection, can be applied to the production of solar cells, and can form strong adhesion on the surfaces of solar cells, cell photoelectric conversion efficiency is high, and meanwhile silver powder, aluminum powder and copper powder of different particle diameters are selected to increase contact areas among particles. Therefore, conductivity of silver paste is improved.
Description
Technical field
The present invention relates to the fine Electronic field of chemicals, is exactly a kind of leadless solar battery silver aluminum bronze powder mixed slurry that contains graphite powder.
Background technology
Electrocondution slurry is electronic devices and components encapsulation, electrode and interconnected critical material, comprises that mainly the burning infiltration type contains leadless solar battery silver aluminum bronze powder mixed slurry and the large class of curing type conducting resinl (electrically conductive ink) two of graphite powder.
Burning infiltration type electrocondution slurry mainly is used in the industries such as solar cell, makes electrode after sintering and uses, and the curing type electrically conductive ink is widely used in the industries such as printed circuit and Electronic Packaging.
Electrocondution slurry is different according to filler wherein, can be divided into carbon slurry (graphite conductor), metal paste (bronze, silver powder, copper powder, yellow gold), and the ceramic size of modification.
Performance Ratio, the conductivity of noble metal filler is best, carbon slurry secondly.But the price of gold is too high, and the oxidative resistance of copper powder is bad, and silver powder and silver-bearing copper powder are comparatively balanced on price and performance.Will getting well of the resistance to wear silver slurry of carbon slurry.
Solar cell conductive paste is comprised of silver powder, aluminium powder, inorganic bond material, organic carrier and relevant auxiliary agent etc.In most electric slurry, the 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 leadless solar battery silver aluminum bronze powder mixed slurry that contains graphite powder.
Above-mentioned purpose realizes by following scheme:
A kind of leadless solar battery silver aluminum bronze powder mixed slurry that contains graphite powder is characterized in that, it is that raw material by following weight parts makes: A expects 60-65, B expects 20-25, and C expects 10-15, repefral 2-3, graphite powder 0.3-0.6, organic silicone oil: 0.5-1;
Described A material is made by the raw material of following weight parts: 1-5 μ m silver powder 45-48,11-15 μ m silver powder 10-15,30-60nm silver powder 10-15,1-5 μ m glass dust 8-12, organic carrier A 15-20, Silane coupling agent KH550 0.8-1.2;
Described B material is made by the raw material of following weight parts: 6-10 μ m aluminium powder 55-58,1-5 μ m aluminium powder 10-15,20-25 μ m glass dust 8-10, organic carrier B 15-20;
Described C material is made by the raw material of following weight parts: 11-15 μ m copper powder 50-55,30-60nm copper powder 5-10,10-15 μ m glass dust 6-8, organic carrier C 18-20;
Described glass dust is made by the raw material of following weight parts: zinc oxide 2-4, iron oxide 3-5, potassium oxide 4-5, titanium dioxide 8-10, chrome green 6-8, calcium oxide 8-10, manganese dioxide 3-5, ceria 3-5, diboron trioxide 9-12, silicon dioxide 20-25;
Described organic carrier A is made by the raw material of following weight parts: methylcellulose 8-10, calcium stearate 1.8-3.6, isopropyl alcohol 38-42.
Described organic carrier B is made by the raw material of following weight parts: octyl phenol urea formaldehyde 203 1-2, vinyl chloride vinyl acetate 10-12, solvent DBE 15-20, methyl iso-butyl ketone (MIBK) 9.8-10.8.
Described organic carrier C is made by the raw material of following weight parts: abietic resin 8-10, the rare glycol ether 20-25 of second, dimethyl succinate 6-8.
Described a kind of leadless solar battery silver aluminum bronze powder mixed slurry that contains graphite powder is characterized in that:
The preparation method comprises the following steps:
(1) take by weight required each raw material of preparation glass dust and put into mixing in silica crucible, after put into electric furnace in 1100-1300 ℃ of sintering 25-35 min, again the glass metal after the gained fusing is poured in cold water, then ball milling, cross the 200-300 mesh sieve, cooling, again 600-700 ℃ of insulation 5-6 hour, then, quench with deionized water again, ball milling, cross the sieve of different meshes, collect respectively and obtain 1-5 μ m glass dust, 10-15 μ m glass dust and 20-25 μ m glass dust, use respectively again 10-15% salt acid soak 1-2 hour, then clean to neutral with deionized water, dry to such an extent that the glass dust of different-grain diameter is standby,
(2) by weight with calcium stearate, isopropyl alcohol mixing, under 75-80 ℃, add methylcellulose afterwards, after stirring after dissolving, namely get organic carrier A standby;
(3) by weight with after solvent DBE, methyl iso-butyl ketone (MIBK) mixing, after adding octyl phenol urea formaldehyde 203 dissolving under 81-85 ℃, then add the dissolving of vinyl chloride vinyl acetate, after stir, namely get organic carrier B standby;
(4) by weight with after the rare glycol ether of second, dimethyl succinate mixing, after adding the abietic resin dissolving under 84-86 ℃, stirring, it is standby namely to get organic carrier C;
(5) glass dust with the prepared 1-5 μ of step (1) m adds in the prepared organic carrier A of step (2) by weight, stir mixed, added by weight successively again 1-5 μ m silver powder, 11-15 μ m silver powder, 30-60nm silver powder, Silane coupling agent KH550 every 20-30 minute, mix 3-5 hour, obtain the A material;
(6) the prepared 20-25 μ of step (1) m glass dust is added in the prepared organic carrier B of step (3), stir mixedly, then added successively 6-10 μ m aluminium powder, 1-5 μ m aluminium powder in every minor tick 30-40 minute, mix 2-3 hour, obtain the B material;
(7) the prepared 10-15 μ of step (1) m glass dust is added in the prepared organic carrier C of step (4), stirring is mixed, then adds successively 11-15 μ m copper powder in every minor tick 30-40 minute, and the 30-60nm copper powder mixes 2-3 hour, obtains the C material;
(8) A material, B material, C material and all the other preparations are contained the raw material mixing by weight of the leadless solar battery silver aluminum bronze powder of graphite powder, ball milling is ground to the slurry fineness less than 10 μ m, transfers viscosity, and viscosity is 120-200Pas, and get final product.
Beneficial effect of the present invention is:
1, the leadless solar battery silver aluminum bronze powder mixed slurry that contains graphite powder of gained of the present invention is not leaded, meet environmental requirement fully, be applied to the production of solar cell, can form strong adhesion in solar cell surface, the cell photoelectric conversion efficiency is high, the silver powder of different-grain diameter and aluminium, copper powder have been selected simultaneously, increase interparticle contact area, thereby improved the conductive capability of silver-colored slurry;
2, the present invention has added copper powder in containing the leadless solar battery silver aluminum bronze powder mixed slurry of graphite powder, aluminium powder can help to reduce silver slurry production cost, save a large amount of noble silvers, improve simultaneously the electric conductivity of silver slurry, thereby reached the purpose that reduces the 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.
Embodiment
A kind of leadless solar battery silver aluminum bronze powder mixed slurry that contains graphite powder, it is that raw material by following weight parts (kg) makes: A material 65, B material 23, C material 15, repefral 2, graphite powder 0.4, organic silicone oil: 0.7;
Described A material is made by the raw material of following weight parts: 1-5 μ m silver powder 45,11-15 μ m silver powder 15,30-60nm silver powder 10,1-5 μ m glass dust 12, organic carrier A 20, Silane coupling agent KH550 1.2;
Described B material is made by the raw material of following weight parts: 6-10 μ m aluminium powder 58,1-5 μ m aluminium powder 13,20-25 μ m glass dust 10, organic carrier B 20;
Described C material is made by the raw material of following weight parts: 11-15 μ m copper powder 55,30-60nm copper powder 5,10-15 μ m glass dust 8, organic carrier C 18;
Described glass dust is made by the raw material of following weight parts: zinc oxide 4, iron oxide 5, potassium oxide 4, titanium dioxide 10, chrome green 8, calcium oxide 10, manganese dioxide 3, ceria 3, diboron trioxide 12, silicon dioxide 25;
Described organic carrier A is made by the raw material of following weight parts: methylcellulose 10, calcium stearate 3.2, isopropyl alcohol 40.
Described organic carrier B is made by the raw material of following weight parts: octyl phenol urea formaldehyde 203 1.3, vinyl chloride vinyl acetate 12, solvent DBE 20, methyl iso-butyl ketone (MIBK) 9.8.
Described organic carrier C is made by the raw material of following weight parts: abietic resin 9, the rare glycol ether 24 of second, dimethyl succinate 8.
Described a kind of leadless solar battery silver aluminum bronze powder mixed slurry that contains graphite powder, the preparation method comprises the following steps:
(1) take by weight required each raw material of preparation glass dust and put into mixing in silica crucible, after put into electric furnace in 1300 ℃ of sintering 28 min, again the glass metal after the gained fusing is poured in cold water, then ball milling, cross 300 mesh sieves, cooling, again 600 ℃ of insulations 5 hours, then, quench with deionized water again, ball milling, cross the sieve of different meshes, collect respectively and obtain 1-5 μ m glass dust, 10-15 μ m glass dust and 20-25 μ m glass dust, use respectively again 12% salt acid soak 1 hour, then clean to neutral with deionized water, dry to such an extent that the glass dust of different-grain diameter is standby,
(2) by weight with calcium stearate, isopropyl alcohol mixing, under 80 ℃, add methylcellulose afterwards, after stirring after dissolving, namely get organic carrier A standby;
(3) by weight with after solvent DBE, methyl iso-butyl ketone (MIBK) mixing, after adding octyl phenol urea formaldehyde 203 dissolving under 85 ℃, then add the dissolving of vinyl chloride vinyl acetate, after stir, namely get organic carrier B standby;
(4) by weight with after the rare glycol ether of second, dimethyl succinate mixing, after adding the abietic resin dissolving under 86 ℃, stirring, it is standby namely to get organic carrier C;
(5) glass dust with the prepared 1-5 μ of step (1) m adds in the prepared organic carrier A of step (2) by weight, stir mixed, added by weight successively again 1-5 μ m silver powder, 11-15 μ m silver powder, 30-60nm silver powder, Silane coupling agent KH550 every 30 minutes, mix 5 hours, obtain the A material;
(6) the prepared 20-25 μ of step (1) m glass dust is added in the prepared organic carrier B of step (3), stir mixedly, more every minor tick added successively 6-10 μ m aluminium powder, 1-5 μ m aluminium powder in 40 minutes, mixes 3 hours, obtained the B material;
(7) the prepared 10-15 μ of step (1) m glass dust is added in the prepared organic carrier C of step (4), stir mixedly, more every minor tick added 11-15 μ m copper powder in 40 minutes successively, and the 30-60nm copper powder mixes 3 hours, obtains the C material;
(8) A material, B material, C material and all the other preparations are contained the raw material mixing by weight of the leadless solar battery silver aluminum bronze powder of graphite powder, ball milling is ground to the slurry fineness less than 10 μ m, transfers viscosity, and viscosity is 150Pas, and get final product.
Adopt screen process press that the silver slurry is printed on 125mm * 125mm Si substrate, then 180 ℃ of dryings, carry out quick fired electrodes lead-in wire at 880 ℃ again, the surperficial silvery white of the contact conductor of making after high temperature sintering, smooth zero defect, peel strength 12 N/cm, soldering is functional, sheet resistance＜10 Siements/sq, the solar cell photoelectric transformation efficiency of preparation is 19.7%, the tensile test result is adhesive force〉13N/mm
2
Claims (2)
1. a leadless solar battery silver aluminum bronze powder mixed slurry that contains graphite powder, is characterized in that, it is that raw material by following weight parts makes: A expects 60-65, B expects 20-25, and C expects 10-15, repefral 2-3, graphite powder 0.3-0.6, organic silicone oil 0.5-1;
Described A material is made by the raw material of following weight parts: 1-5 μ m silver powder 45-48,11-15 μ m silver powder 10-15,30-60nm silver powder 10-15,1-5 μ m glass dust 8-12, organic carrier A 15-20, Silane coupling agent KH550 0.8-1.2;
Described B material is made by the raw material of following weight parts: 6-10 μ m aluminium powder 55-58,1-5 μ m aluminium powder 10-15,20-25 μ m glass dust 8-10, organic carrier B 15-20;
Described C material is made by the raw material of following weight parts: 11-15 μ m copper powder 50-55,30-60nm copper powder 5-10,10-15 μ m glass dust 6-8, organic carrier C 18-20;
Described glass dust is made by the raw material of following weight parts: zinc oxide 2-4, iron oxide 3-5, potassium oxide 4-5, titanium dioxide 8-10, chrome green 6-8, calcium oxide 8-10, manganese dioxide 3-5, ceria 3-5, diboron trioxide 9-12, silicon dioxide 20-25;
Described organic carrier A is made by the raw material of following weight parts: methylcellulose 8-10, calcium stearate 1.8-3.6, isopropyl alcohol 38-42;
Described organic carrier B is made by the raw material of following weight parts: octyl phenol urea formaldehyde 203 1-2, vinyl chloride vinyl acetate 10-12, solvent DBE 15-20, methyl iso-butyl ketone (MIBK) 9.8-10.8;
Described organic carrier C is made by the raw material of following weight parts: abietic resin 8-10, the rare glycol ether 20-25 of second, dimethyl succinate 6-8.
2. a kind of leadless solar battery silver aluminum bronze powder mixed slurry that contains graphite powder according to claim 1 is characterized in that:
The preparation method comprises the following steps:
(1) take by weight required each raw material of preparation glass dust and put into mixing in silica crucible, after put into electric furnace in 1100-1300 ℃ of sintering 25-35 min, again the glass metal after the gained fusing is poured in cold water, then ball milling, cross the 200-300 mesh sieve, cooling, again 600-700 ℃ of insulation 5-6 hour, then, quench with deionized water again, ball milling, cross the sieve of different meshes, collect respectively and obtain 1-5 μ m glass dust, 10-15 μ m glass dust and 20-25 μ m glass dust, use respectively again 10-15% salt acid soak 1-2 hour, then clean to neutral with deionized water, dry to such an extent that the glass dust of different-grain diameter is standby,
(2) by weight with calcium stearate, isopropyl alcohol mixing, under 75-80 ℃, add methylcellulose afterwards, after stirring after dissolving, namely get organic carrier A standby;
(3) by weight with after solvent DBE, methyl iso-butyl ketone (MIBK) mixing, after adding octyl phenol urea formaldehyde 203 dissolving under 81-85 ℃, then add the dissolving of vinyl chloride vinyl acetate, after stir, namely get organic carrier B standby;
(4) by weight with after the rare glycol ether of second, dimethyl succinate mixing, after adding the abietic resin dissolving under 84-86 ℃, stirring, it is standby namely to get organic carrier C;
(5) glass dust with the prepared 1-5 μ of step (1) m adds in the prepared organic carrier A of step (2) by weight, stir mixed, added by weight successively again 1-5 μ m silver powder, 11-15 μ m silver powder, 30-60nm silver powder, Silane coupling agent KH550 every 20-30 minute, mix 3-5 hour, obtain the A material;
(6) the prepared 20-25 μ of step (1) m glass dust is added in the prepared organic carrier B of step (3), stir mixedly, then added successively 6-10 μ m aluminium powder, 1-5 μ m aluminium powder in every minor tick 30-40 minute, mix 2-3 hour, obtain the B material;
(7) the prepared 10-15 μ of step (1) m glass dust is added in the prepared organic carrier C of step (4), stirring is mixed, then adds successively 11-15 μ m copper powder in every minor tick 30-40 minute, and the 30-60nm copper powder mixes 2-3 hour, obtains the C material;
(8) A material, B material, C material and all the other preparations are contained the raw material mixing by weight of the leadless solar battery silver aluminum bronze powder of graphite powder, ball milling is ground to the slurry fineness less than 10 μ m, transfers viscosity, and viscosity is 120-200Pas, and get final product.
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| CN201210521986.8A CN103117109B (en) | 2012-12-07 | 2012-12-07 | A kind of leadless solar battery silver aluminum bronze powder mixed slurry that contains graphite powder |
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| CN201210521986.8A CN103117109B (en) | 2012-12-07 | 2012-12-07 | A kind of leadless solar battery silver aluminum bronze powder mixed slurry that contains graphite powder |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104575702A (en) * | 2014-12-23 | 2015-04-29 | 合肥中南光电有限公司 | Environment-friendly electric conduction silver paste |
| CN104992801A (en) * | 2015-06-30 | 2015-10-21 | 苏州洋杰电子有限公司 | Resistance paste and preparation method thereof |
| CN105810759A (en) * | 2016-04-26 | 2016-07-27 | 江阴市天邦涂料股份有限公司 | Silver-aluminum paste used for solar cell |
| CN111312425A (en) * | 2019-11-18 | 2020-06-19 | 中亚世纪(天津)科技有限公司 | Hardened feed point material of printed antenna and preparation method thereof |
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| CN102244112A (en) * | 2011-07-19 | 2011-11-16 | 彩虹集团公司 | Aluminium paste for silicon solar battery |
| CN102568649A (en) * | 2011-12-29 | 2012-07-11 | 彩虹集团公司 | Method for preparing electrode paste for grid buried crystal silicon solar cells |
| CN102708942A (en) * | 2012-02-13 | 2012-10-03 | 江苏瑞德新能源科技有限公司 | Lead-free silver and aluminum slurry for solar photocell and preparation method of slurry |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20110073178A1 (en) * | 2009-09-30 | 2011-03-31 | BYD Co. Ltd | Electrically conductive paste, solar cell containing same and method |
| CN102244112A (en) * | 2011-07-19 | 2011-11-16 | 彩虹集团公司 | Aluminium paste for silicon solar battery |
| CN102568649A (en) * | 2011-12-29 | 2012-07-11 | 彩虹集团公司 | Method for preparing electrode paste for grid buried crystal silicon solar cells |
| CN102708942A (en) * | 2012-02-13 | 2012-10-03 | 江苏瑞德新能源科技有限公司 | Lead-free silver and aluminum slurry for solar photocell and preparation method of slurry |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575702A (en) * | 2014-12-23 | 2015-04-29 | 合肥中南光电有限公司 | Environment-friendly electric conduction silver paste |
| CN104992801A (en) * | 2015-06-30 | 2015-10-21 | 苏州洋杰电子有限公司 | Resistance paste and preparation method thereof |
| CN104992801B (en) * | 2015-06-30 | 2018-02-23 | 苏州洋杰电子有限公司 | A kind of resistance slurry and preparation method thereof |
| CN105810759A (en) * | 2016-04-26 | 2016-07-27 | 江阴市天邦涂料股份有限公司 | Silver-aluminum paste used for solar cell |
| CN105810759B (en) * | 2016-04-26 | 2017-07-25 | 江阴市天邦涂料股份有限公司 | A kind of silver-colored aluminum slurry used for solar batteries |
| CN111312425A (en) * | 2019-11-18 | 2020-06-19 | 中亚世纪(天津)科技有限公司 | Hardened feed point material of printed antenna and preparation method thereof |
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| CN103117109B (en) | 2016-05-11 |
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