CN103614588A - Preparation method of silver/silver alloy microwire - Google Patents
Preparation method of silver/silver alloy microwire Download PDFInfo
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- CN103614588A CN103614588A CN201310576900.6A CN201310576900A CN103614588A CN 103614588 A CN103614588 A CN 103614588A CN 201310576900 A CN201310576900 A CN 201310576900A CN 103614588 A CN103614588 A CN 103614588A
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Abstract
The invention discloses a preparation method of silver/silver alloy microwire. The preparation method comprises the following steps: adding metallic elements with the concentration of 0-4wt% such as metal indium (In), copper (Cu), stannum (Sn) and zinc (Zn) to metal Ag with the high purity of 99.99% so as to form alloy, carrying out continuous casting, coarse drawing, intermediate drawing, mini-fine drawing and micro-drawing on a sliver/sliver alloy material and annealing, thus obtaining the microwire with the minimum diameter of 0.010-0.020mm. The silver/silver alloy microwire is superfine in wire diameter, has good mechanical property and electrical property and meets the requirement on the tensile strength of the microwire in a layout process and the requirement on the processing property of a material required in photovoltaic cell mass production. The silver/silver alloy microwire does not warp and fall off in sintering and annealing processes, has good interfacial adhesion with silver paste after being sintered, and can be applied to front electrode materials of Si solar photovoltaic cells.
Description
Technical field
The present invention relates to the manufacturing technology field of silicon solar photovoltaic cell front electrode, particularly a kind of preparation method of silver and silver alloys glass-coated microwire for silicon solar photovoltaic battery panel front electrode.
Background technology
At present, the front electrode of nearly all silicon single crystal or polysilicon solar cell plate is all to adopt the mode of printed silver slurry to carry out, although the technique of printed silver slurry is very ripe, but this technique still exists some adverse influences to the performance of solar panel, also exist and further improve the necessity promoting.First, the live width of printed silver slurry is wider, and live width is in the scope of 70-100 μ m at present.Wider live width has covered the area of Si cell panel, has reduced the area of effective utilization, thereby has affected the transformation efficiency of cell panel, if reduce live width, causes the difficulty of printing, and is difficult to form good, the imperforate continuous silver electrode of contact; Secondly, the resistance of printed silver electrode is larger, causes the loss of electric energy.
A new Si photovoltaic cell front electrode, is the mode that adopts the silver-colored line of layout, and its processing step is that silver-colored line is starched through silver, thereby on silver-colored line surface, is coated the silver slurry layer of a layer thickness 10-15 μ m.The silver-colored line cloth of coated with silver slurry is imposed on to surface of photovoltaic cell panel, through sintering, form electrode.Adopt this mode, can greatly reduce electrode live width to 30-45 μ m, because the specific conductivity of silver-colored line is much better than silver slurry, thereby also reduced the resistance of front electrode.Under the effect of multiple factors, adopt silver-colored line to make the photovoltaic cell of front electrode, its transformation efficiency can improve 2-5%.
Adopt in the technique of silver-colored line as photovoltaic cell front electrode, the performance of silver-colored line is for the live width of electrode, specific conductivity, and the processing performance of charity electrode and the yield rate of cell piece have conclusive impact.Silver linear dimension large (being for example greater than 20 μ m), will cause that electrode live width increases; And, the silver-colored line of large-size and higher hardness, poor with the bonding properties of silver slurry in sintering process, easily warpage comes off, and has a strong impact on the yield rate of cell piece; And size hour, its breaking tenacity will sharply decline, if mechanical property can not meet processing requirement, the easy process Fracture in electrode charity, have a strong impact on continuity and the efficiency of production, cause this technique can not be practical, and in the actual production of photovoltaic cell, total fraction defective of haveing suffered various factors in technological process should <3%.At present for the silver-colored line of bonding, its diameter is conventionally at 20-25 μ m, and the mechanical property of its alloying constituent and material, with the interface bonding state of silver slurry, can not finely meet the service requirements of Si solar photovoltaic cell panel front electrode after sintering.
The present invention proposes a kind of silver/silver alloys glass-coated microwire of the Si of being applied to solar photovoltaic cell panel front electrode, and the mechanical properties such as its size and hardness, breaking tenacity meet the requirement of the processing performances such as the charity, sintering of silver-colored line electrode in scale operation; Its size, specific conductivity, with the interfacial combined function of silver slurry, meets electricity and the mechanical property requirements (sheet resistance <5m Ω/, vertical sticking power >3N) of Si solar panel front electrode after sintering.
Summary of the invention
The object of this invention is to provide the exsertile silver/silver alloys of a kind of mechanics of materials and electrical property glass-coated microwire, be applied to Si solar-energy photo-voltaic cell front electrode, meet the desired shop characteristic of photovoltaic cell scale operation.
The present invention for the technical scheme that solves its technical problem and adopt is: the preparation method of a kind of silver and silver alloys glass-coated microwire,
The first step, the smelting of silver/silver alloys and continuous casting:
In vacuum smelting furnace, at the temperature of 1100 ° of C, after Ag, In, Cu, Sn, Zn alloying element are weighed in following ratio,
wherein silver (Ag) is 96%-100%; Indium (In) is 0-0.5%; Copper (Cu) is 0-1.0%; Tin (Sn) is 0-0.5%; Zinc (Zn) is 0-1.5%, be mixed to join in vacuum smelting furnace, after alloying constituent is dissolved, open induction stirring, under the frequency of 10-15kHz, stir 10 minutes, by alloy melt cooled and solidified, by above-mentioned steps, repeatedly smelt three times, to guarantee the homogeneity of alloy; Smelt uniform alloy and be controlled at the temperature of 1000-1400 ° of C, in the atmosphere of argon shield, the mode of drawing under employing, it is silver/silver alloys rod of 6～10mm that continuous casting becomes diameter;
Second step, the drawing greatly of silver/silver alloys rod, in draw:
The silver of above-mentioned diameter 6～10mm/silver alloys rod is drawn into the silver that diameter is 1.5mm/silver alloys rod through drawing wire machine; Continue to be drawn into through Medium drawing mach ine silver/silver alloy wire of diameter 0.1mm, in drawing process, the deformation rate of controlling wire rod is 5%-10% again;
The 3rd step, carefully the drawing of silver/silver alloys rod, micro-drawing:
It is 0.045mm fine rule that the silver/silver alloy wire that is 0.1mm by diameter becomes diameter through meticulous machine drawing continuous drawing, then passes through multiple tracks drawing in micro-machine drawing, finally arrives the fine diameter of 0.010～0.020mm.
As a further improvement on the present invention, in described the 3rd step, being drawn to glass-coated microwire diameter, be 0.038mm, when the intermediate sizes of 0.025mm and final finished size, silver/silver alloy wire is carried out to multiple tracks anneal, eliminate the work hardening that drawing causes, be beneficial to down one drawing and final finished rolling.
As a further improvement on the present invention, described annealing temperature is 300 ° of C-550 ° of C, and annealing speed is 50-300 m/min, and annealing process is carried out under the protection of N2.
As a further improvement on the present invention, in described the 3rd step, carefully drawing, micro-draw and last wrapup procedure in, adopt the initiatively mode of unwrapping wire, controlling drawing and winding tension is 1-50g, realizes drawing glass-coated microwire continuous length more than 500 meters.
Silver/silver alloys glass-coated microwire for silicon solar photovoltaic battery panel front electrode: the wire diameter of described silver/silver alloys glass-coated microwire is a 0.010-0.020mm, its continuous length >500m.
The invention has the beneficial effects as follows: the present invention proposes a kind of preparation method of silver and silver alloys glass-coated microwire of the Si of being exclusively used in solar-energy photo-voltaic cell front electrode, has the following advantages:
1, the formula of mother metal adds the low melting point alloy elements such as In, Cu, Sn, Zn in high-purity Ag.The interpolation of alloying element, plays the effect of strengthening, is conducive to the drawing of material, to reach needed wire diameter and length, does not rupture; Adding of low melting point element, the fusing point of reduction material, is conducive to silver-colored line cloth and imposes on the anneal after Si solar panel, approaches, in conjunction with good with the annealing temperature of silver slurry;
2, ultra-fine wire diameter, silver/silver alloys glass-coated microwire that the present invention proposes, its wire diameter is fine to 0.010-0.020mm, and fine wire diameter is conducive to reduce the live width of front electrode, reduces silver slurry consumption, reduces use cost;
3, good mechanical property, silver/silver alloys glass-coated microwire that the present invention proposes, by controlling the component of alloy and controlling drawing process, in the wire range of 0.010-0.020mm, there is good mechanical property, pull-off force 3.5-10g, unit elongation 5%-15%, Brinell hardness HB25-40.Larger tensile strength can meet silver-colored line in the extensive laying of surface of photovoltaic cell panel, and lower hardness and larger unit elongation can meet in sintering annealing process warpage does not occur, and comes off, and after sintering, is combined with the interface that silver slurry keeps good;
4, good conductivity: resistivity 1.8x10
-8Ω m, approaches the resistivity of fine silver, is only the 1/2-1/3 of sintering silver slurry resistivity, is conducive to improve the collection effciency of photovoltaic electric current.
Embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described, and this embodiment only, for explaining the present invention, does not form limiting the scope of the present invention.
Embodiment 1: the preparation method of a kind of silver and silver alloys glass-coated microwire,
The first step, the smelting of silver/silver alloys and continuous casting:
In vacuum smelting furnace, at the temperature of 1100 ° of C, after Ag, In, Cu, Sn, Zn alloying element are weighed in following ratio,
wherein silver (Ag) is 100%,
wherein the purity of Ag is 99.99%,be mixed to join in vacuum smelting furnace, after alloying constituent is dissolved, open induction stirring, under the frequency of 10-15kHz, stir 10 minutes, by alloy melt cooled and solidified, by above-mentioned steps, repeatedly smelt three times, to guarantee the homogeneity of alloy; Smelt uniform alloy and be controlled at the temperature of 1000-1400 ° of C, in the atmosphere of argon shield, the mode of drawing under employing, it is silver/silver alloys rod of 6mm that continuous casting becomes diameter;
Second step, the drawing greatly of silver/silver alloys rod, in draw:
The silver of above-mentioned diameter 6mm/silver alloys rod is drawn into the silver that diameter is 1.5mm/silver alloys rod through drawing wire machine; Continue to be drawn into through Medium drawing mach ine silver/silver alloy wire of diameter 0.1mm, in drawing process, the deformation rate of controlling wire rod is 5%-10% again;
The 3rd step, carefully the drawing of silver/silver alloys rod, micro-drawing:
It is 0.045mm fine rule that the silver/silver alloy wire that is 0.1mm by diameter becomes diameter through meticulous machine drawing continuous drawing, then passes through multiple tracks drawing in micro-machine drawing, finally arrives the fine diameter of 0.020mm.
In described the 3rd step, being drawn to glass-coated microwire diameter, be 0.038mm, when the intermediate sizes of 0.025mm and final finished size, silver/silver alloy wire carried out to multiple tracks anneal, eliminate the work hardening that drawing causes, be beneficial to down one drawing and final finished rolling; Described annealing temperature is 300 ° of C, and annealing speed is 50 ms/min, and annealing process is carried out under the protection of N2; In described the 3rd step, carefully drawing, micro-draw and last wrapup procedure in, adopt the initiatively mode of unwrapping wire, while carefully drawing, controlling drawing tension force is 20g, while being drawn to 0.02mm, control winding tension is 3g, realizes drawing glass-coated microwire continuous length more than 500 meters.
Embodiment 2: the preparation method of a kind of silver and silver alloys glass-coated microwire,
The first step, the smelting of silver/silver alloys and continuous casting:
In vacuum smelting furnace, at the temperature of 1100 ° of C, after Ag, In, Cu, Sn, Zn alloying element are weighed in following ratio,
wherein silver (Ag) is 96%; Indium (In) is 0.5%; Copper (Cu) is 1.0%; Tin (Sn) is 0.5%; Zinc (Zn) is 1.5%,
wherein the purity of Ag is 99.99%, and the purity of other alloys is 95.95%,be mixed to join in vacuum smelting furnace, after alloying constituent is dissolved, open induction stirring, under the frequency of 10-15kHz, stir 10 minutes, by alloy melt cooled and solidified, by above-mentioned steps, repeatedly smelt three times, to guarantee the homogeneity of alloy; Smelt uniform alloy and be controlled at the temperature of 1000-1400 ° of C, in the atmosphere of argon shield, the mode of drawing under employing, it is silver/silver alloys rod of 10mm that continuous casting becomes diameter;
Second step, the drawing greatly of silver/silver alloys rod, in draw:
The silver of above-mentioned diameter 10mm/silver alloys rod is drawn into the silver that diameter is 1.5mm/silver alloys rod through drawing wire machine; Continue to be drawn into through Medium drawing mach ine silver/silver alloy wire of diameter 0.1mm, in drawing process, the deformation rate of controlling wire rod is 10% again;
The 3rd step, carefully the drawing of silver/silver alloys rod, micro-drawing:
It is 0.045mm fine rule that the silver/silver alloy wire that is 0.1mm by diameter becomes diameter through meticulous machine drawing continuous drawing, then passes through multiple tracks drawing in micro-machine drawing, finally arrives the fine diameter of 0.010mm.
In described the 3rd step, being drawn to glass-coated microwire diameter, be 0.038mm, when the intermediate sizes of 0.025mm and final finished size, silver/silver alloy wire carried out to multiple tracks anneal, eliminate the work hardening that drawing causes, be beneficial to down one drawing and final finished rolling.
Described annealing temperature is 550 ° of C, and annealing speed is 300 ms/min, and annealing process is carried out under the protection of N2.
In described the 3rd step, carefully drawing, micro-draw and last wrapup procedure in, adopt the initiatively mode of unwrapping wire, while carefully drawing, controlling drawing tension force is 50g, is drawn to diameter 0.02mm when following, and controlling drawing tension force is 2g, the glass-coated microwire finished product of diameter 0.01mm, control winding tension is 1g.Realize drawing glass-coated microwire continuous length more than 500 meters.
The wire diameter of described silver/silver alloys glass-coated microwire is 0.010-0.020mm, its continuous length >500m, and the mechanical property of glass-coated microwire is: pull-off force 3.5-10g, unit elongation 5%-15%, Brinell hardness HB25-40.The electric property of glass-coated microwire is: resistivity 1.7x10
-8-2.2 x10
-8Ω m.
Claims (5)
1. a preparation method for silver and silver alloys glass-coated microwire, is characterized in that:
The first step, the smelting of silver/silver alloys and continuous casting:
In vacuum smelting furnace, at the temperature of 1100 ° of C, after Ag, In, Cu, Sn, Zn alloying element are weighed in following ratio, wherein silver (Ag) is 96%-100%; Indium (In) is 0-0.5%; Copper (Cu) is 0-1.0%; Tin (Sn) is 0-0.5%; Zinc (Zn) is 0-1.5%, is mixed to join in vacuum smelting furnace, after alloying constituent is dissolved, open induction stirring, under the frequency of 10-15kHz, stir 10 minutes, by alloy melt cooled and solidified, by above-mentioned steps, repeatedly smelt three times, to guarantee the homogeneity of alloy; Smelt uniform alloy and be controlled at the temperature of 1000-1400 ° of C, in the atmosphere of argon shield, the mode of drawing under employing, it is silver/silver alloys rod of 6～10mm that continuous casting becomes diameter;
Second step, the drawing greatly of silver/silver alloys rod, in draw:
The silver of above-mentioned diameter 6～10mm/silver alloys rod is drawn into the silver that diameter is 1.5mm/silver alloys rod through drawing wire machine; Continue to be drawn into through Medium drawing mach ine silver/silver alloy wire of diameter 0.1mm, in drawing process, the deformation rate of controlling wire rod is 5%-10% again;
The 3rd step, carefully the drawing of silver/silver alloys rod, micro-drawing:
It is 0.045mm fine rule that the silver/silver alloy wire that is 0.1mm by diameter becomes diameter through meticulous machine drawing continuous drawing, then passes through multiple tracks drawing in micro-machine drawing, finally arrives the fine diameter of 0.010～0.020mm.
2. the preparation method of silver according to claim 1 and silver alloys glass-coated microwire, it is characterized in that: in described the 3rd step, being drawn to glass-coated microwire diameter, be 0.038mm, when the intermediate sizes of 0.025mm and final finished size, silver/silver alloy wire is carried out to multiple tracks anneal, eliminate the work hardening that drawing causes, be beneficial to down one drawing and final finished rolling.
3. the preparation method of silver according to claim 2 and silver alloys glass-coated microwire, is characterized in that: described annealing temperature is 300 ° of C-550 ° of C, and annealing speed is 50-300 m/min, and annealing process is carried out under the protection of N2.
4. the preparation method of silver according to claim 1 and silver alloys glass-coated microwire, it is characterized in that: in described the 3rd step, carefully drawing, micro-draw and last wrapup procedure in, adopt the initiatively mode of unwrapping wire, controlling drawing and winding tension is 1-50g, realizes drawing glass-coated microwire continuous length more than 500 meters.
5. a kind of silver/silver alloys glass-coated microwire for silicon solar photovoltaic battery panel front electrode that prepared by method according to claim 1: it is characterized in that: the wire diameter of described silver/silver alloys glass-coated microwire is 0.010-0.020mm its continuous length >500m.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834832A (en) * | 2014-03-10 | 2014-06-04 | 浙江佳博科技股份有限公司 | Imitation gold bonding alloy wire and preparation method thereof |
| CN104588421A (en) * | 2015-01-21 | 2015-05-06 | 宁波金田新材料有限公司 | Production process of high-elongation fine enameled wire |
| CN104894425A (en) * | 2015-05-27 | 2015-09-09 | 安徽捷澳电子有限公司 | Ultrathin silver flat ribbon and preparation method thereof |
| CN105772522A (en) * | 2014-12-23 | 2016-07-20 | 福建盈盛号金银饰品有限公司 | Silver paper weaving technique and production device |
| CN106319276A (en) * | 2015-06-25 | 2017-01-11 | 王仁宏 | Silver alloy material and preparation technology thereof |
| CN107316669A (en) * | 2016-04-27 | 2017-11-03 | 上海纳晶科技有限公司 | Nano Silver wraps up one-dimensional linear electrode material and preparation method thereof |
| CN107740019A (en) * | 2017-10-20 | 2018-02-27 | 温州宏丰电工合金股份有限公司 | A kind of fine grain silver-based electric contact material and preparation method thereof |
| US10381320B2 (en) | 2014-07-10 | 2019-08-13 | Nippon Steel Chemical & Material Co., Ltd. | Silver bonding wire for semiconductor device containing indium, gallium, and/or cadmium |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1736558A1 (en) * | 2003-12-10 | 2006-12-27 | Tanaka Kikinzoku Kogyo Kabushiki Kaisha | Silver alloy for reflective film |
| CN102214630A (en) * | 2011-05-18 | 2011-10-12 | 苏州衡业新材料科技有限公司 | Silver-base microalloy bonding wire and preparation method thereof |
| CN102312120A (en) * | 2011-09-01 | 2012-01-11 | 王一平 | Electromigration-resistant silver-indium alloy bonding wire and preparation method thereof |
| CN102776408A (en) * | 2012-08-16 | 2012-11-14 | 烟台一诺电子材料有限公司 | Silver alloy wire and preparation method thereof |
-
2013
- 2013-11-19 CN CN201310576900.6A patent/CN103614588A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1736558A1 (en) * | 2003-12-10 | 2006-12-27 | Tanaka Kikinzoku Kogyo Kabushiki Kaisha | Silver alloy for reflective film |
| CN102214630A (en) * | 2011-05-18 | 2011-10-12 | 苏州衡业新材料科技有限公司 | Silver-base microalloy bonding wire and preparation method thereof |
| CN102312120A (en) * | 2011-09-01 | 2012-01-11 | 王一平 | Electromigration-resistant silver-indium alloy bonding wire and preparation method thereof |
| CN102776408A (en) * | 2012-08-16 | 2012-11-14 | 烟台一诺电子材料有限公司 | Silver alloy wire and preparation method thereof |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103834832A (en) * | 2014-03-10 | 2014-06-04 | 浙江佳博科技股份有限公司 | Imitation gold bonding alloy wire and preparation method thereof |
| US10381320B2 (en) | 2014-07-10 | 2019-08-13 | Nippon Steel Chemical & Material Co., Ltd. | Silver bonding wire for semiconductor device containing indium, gallium, and/or cadmium |
| CN105772522A (en) * | 2014-12-23 | 2016-07-20 | 福建盈盛号金银饰品有限公司 | Silver paper weaving technique and production device |
| CN104588421A (en) * | 2015-01-21 | 2015-05-06 | 宁波金田新材料有限公司 | Production process of high-elongation fine enameled wire |
| CN104894425A (en) * | 2015-05-27 | 2015-09-09 | 安徽捷澳电子有限公司 | Ultrathin silver flat ribbon and preparation method thereof |
| CN106319276A (en) * | 2015-06-25 | 2017-01-11 | 王仁宏 | Silver alloy material and preparation technology thereof |
| CN107316669A (en) * | 2016-04-27 | 2017-11-03 | 上海纳晶科技有限公司 | Nano Silver wraps up one-dimensional linear electrode material and preparation method thereof |
| CN107316669B (en) * | 2016-04-27 | 2019-06-11 | 上海纳晶科技有限公司 | Nano silver wraps up one-dimensional linear electrode material and preparation method thereof |
| CN107740019A (en) * | 2017-10-20 | 2018-02-27 | 温州宏丰电工合金股份有限公司 | A kind of fine grain silver-based electric contact material and preparation method thereof |
| CN112143931A (en) * | 2020-09-18 | 2020-12-29 | 国金黄金股份有限公司 | Low-heat-conductivity silver material, preparation method thereof and silverware |
| CN112226643A (en) * | 2020-09-18 | 2021-01-15 | 国金黄金股份有限公司 | Precious metal silver material, preparation method thereof and silverware |
| CN112226643B (en) * | 2020-09-18 | 2022-03-11 | 国金黄金股份有限公司 | Precious metal silver material, preparation method thereof and silverware |
| CN112143931B (en) * | 2020-09-18 | 2022-03-11 | 国金黄金股份有限公司 | Low-heat-conductivity silver material, preparation method thereof and silverware |
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Application publication date: 20140305 |