CN102254587B - Sizing agent for Al-BSF (Al-back surface field) of silicon solar cell and preparation method thereof - Google Patents
Sizing agent for Al-BSF (Al-back surface field) of silicon solar cell and preparation method thereof Download PDFInfo
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- CN102254587B CN102254587B CN201110126827.3A CN201110126827A CN102254587B CN 102254587 B CN102254587 B CN 102254587B CN 201110126827 A CN201110126827 A CN 201110126827A CN 102254587 B CN102254587 B CN 102254587B
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Abstract
The invention discloses a sizing agent for an Al-BSF (Al-back surface field) of a silicon solar cell and a preparation method thereof. The sizing agent is prepared from aluminum powder, aluminum-silicon alloy powder, an organic carrier, boron, oxide or compound of boron and one or some mixtures of gallium according to certain parts by weight through mixing and grinding. The silicon solar cell manufactured by using the sizing agent has high photoelectric conversion efficiency, no generation of aluminum beams and aluminum bubbles, firm attachment to silicon wafers and small silicon wafer deformation. According to the invention, glass powder is not adopted as an inorganic binder; the manufactured solar cell has good electrical property and smaller attenuation in the using process; and the problems of poor electrical property, bent silicon wafer, silicon wafer pollution from heavy metals, and the like caused by adding the glass powder to the Al-BSF sizing agent in the traditional silicon solar cell are solved.
Description
Technical field
The present invention relates to a kind of silicon solar cell slurry and preparation method thereof, slurry and Preparation Method thereof for especially a kind of silicon solar cell aluminium back surface field.
Background technology
In silicon solar cell production process, the aluminium back surface field slurry that is rich in metallic aluminium (Al) is conventionally screen printed in the back side of silicon (Si) sheet and is dried, sintering at the temperature higher than aluminium fusing point subsequently, form Al-Si melt, the silicon epitaxial layer of the aluminium of cooling rear formation, this layer is commonly called back layer, is also referred to as aluminium back surface field.
The aluminium back surface field forming after sintering, must adhesion-tight, the ash that do not fall, and silicon chip distortion is little, does not produce aluminium pill, aluminium bubble.Prior art is mostly added the material that can form glass ingredient after glass dust or sintering as inorganic adhesive, aluminium and silicon are bonded as one, to improve the adhesive force of aluminium back surface field, patent CN100446277C, CN100463229C, CN101304049A, CN101425545B, CN101345263B, CN101615637B, CN101984493A are exactly the Typical Representative of this type of technology.Glass dust mostly is inorganic oxide, poor electric conductivity, and after introducing, meeting reduces the electrical property of aluminium back surface field; Glass dust contains many kinds of metal ions, and the diffusion of some metal ingredient in silicon, far away higher than aluminium, destroys silicon chip PN junction, accelerates the decay of silicon solar cell; The glass dust coefficient of expansion is far longer than silicon chip, easily makes silicon chip flexural deformation, even makes silicon chip fragmentation.Patent of invention CN101621082B, though select the glass putty of low melting point to replace glass dust, be applied to aluminium back surface field slurry as inorganic binder, alleviate the harmful effect of glass dust to aluminium back surface field, but how much tin, as a kind of impurity element, has impact to aluminium back surface field performance.
Summary of the invention
The object of this invention is to provide a kind of silicon solar cell aluminium back surface field slurry and preparation method thereof, to solve the above-mentioned problems in the prior art.The aluminium back surface field that adopts slurry of the present invention to form, excellent conductivity, smooth surface, does not play aluminium pill, aluminium bubble, adhesion-tight; Silicon chip metal ion pollution is few, and the solar cell of made is in use decayed little.
From aluminium-silicon alloys phasor, can find out, within the scope of certain proportion, the fusing point of aluminium-silicon alloys is lower than single silicon and single aluminium.After test of many times, select alusil alloy within the scope of certain proportion as inorganic adhesive, after instead of glass powder, sintering, can form the material of glass ingredient or the metal powder of low melting point, bonding for aluminium and silicon.
The probability that produces aluminium pill, aluminium bubble for reducing aluminium back surface field, improves silicon solar cell electrical property, introduces the oxide of pure boron, boron or compound, Metallic Gallium is fining agent, the crystal grain of fining metal aluminium in sintering process in slurry of the present invention.
Fine granularity ball aluminum powder, the selection of fine granularity alusil alloy powder, can improve the sintered density of aluminium back surface field, thereby improves the electrical property of silicon solar cell.
The invention discloses a kind of silicon solar cell aluminium back surface field slurry, it is characterized in that this slurry is by aluminium powder, alusil alloy powder, organic carrier, the mixture of one or more of the oxide of pure boron, boron or compound, Metallic Gallium is mixed with and forms, and the weight part ratio of above-mentioned each component is as follows:
55～80 parts of aluminium powders
0.1～10 part, alusil alloy powder
15～30 parts of organic carriers
0.1～5 part, the mixture of one or more of the oxide of pure boron, boron or compound, Metallic Gallium
Described aluminium powder is spherical; Described aluminium powder, alusil alloy Powder Particle Size are 0.5～8 μ m; Described alusil alloy powder is that silica flour is 5～25:100 with the ratio of aluminium powder weight, and additional 0.1～5% dolomol is grinding aid, puts into ball grinder ball milling 8～36 hours and obtain after mixing.
Described organic carrier is formed by polymer and organic solvent mixed dissolution, and described polymer is one or more the mixture in ethyl cellulose, phenolic resins, polyvinyl butyral resin, polyamide, polyurethane resin, mylar, acrylic resin; Described organic solvent is one or more the mixture in phenmethylol, terpinol, diethylene glycol butyl ether, diethylene glycol monobutyl ether acetate, triethyl citrate, tributyl citrate, acetylation tributyl citrate, lecithin, diethylene glycol ether.
(this section is deleted)
The method of preparing silicon solar cell aluminium back surface field slurry of the present invention is made up of following steps successively:
(1) polymer is dissolved in organic solvent, forms organic carrier;
(2) prepare alusil alloy powder;
(3) by aluminium powder, silicon aluminium alloy powder, organic carrier, the mixture of one or more of the oxide of pure boron, boron or compound, Metallic Gallium mixes, and grinds through three-roll grinder, makes silicon solar cell aluminium back surface field slurry.
Embodiment
Not implement example below in conjunction with tool, further set forth the present invention.
Embodiment 1
By 15 grams of ethyl celluloses, 5 grams of phenolic resins, be added in the mixed solution of 10 grams of terpinols, 60 grams of diethylene glycol butyl ether, 10 grams of tributyl citrate, and disperse to mix at 50 ℃～80 ℃, form transparent organic carrier for subsequent use; 15 grams of silica flours are mixed with 100 grams of aluminium powders, and additional 3 grams of dolomols, put into ball grinder after mixing, and ball-milling medium is with powder quality than being 10:1, and ball milling forms alusil alloy powder after 24 hours for subsequent use; Get 20 grams of above-mentioned organic carriers, add 75 grams of aluminium powders, 5 grams of alusil alloy powder, 2 grams of Metallic Galliums, fully mix, and then make silicon solar cell aluminium back surface field slurry for 3 times by the three-roll grinder system of grinding.
Embodiment 2
15 grams of ethyl celluloses are added in the mixed solution of 30 grams of terpinols, 40 grams of diethylene glycol butyl ether, 5 grams of tributyl citrate, and disperse to mix at 50 ℃～80 ℃, form transparent organic carrier for subsequent use; 10 grams of silica flours are mixed with 100 grams of aluminium powders, and additional 3 grams of dolomols, put into ball grinder after mixing, and ball-milling medium is with powder quality than being 10:1, and ball milling forms alusil alloy powder after 10 hours for subsequent use; Get 20 grams of above-mentioned organic carriers, add 75 grams of aluminium powders, 5 grams of alusil alloy powder, 2 grams of Metallic Galliums, fully mix, and then make silicon solar cell aluminium back surface field slurry for 3 times by the three-roll grinder system of grinding.
Embodiment 3
By 15 grams of ethyl celluloses, 5 grams of polyvinyl butyral resins, be added in the mixed solution of 10 grams of terpinols, 60 grams of diethylene glycol butyl ether, 10 grams of tributyl citrate, and disperse to mix at 50 ℃～80 ℃, form transparent organic carrier for subsequent use; 15 grams of silica flours are mixed with 100 grams of aluminium powders, and additional 3 grams of dolomols, put into ball grinder after mixing, and ball-milling medium is with powder quality than being 10:1, and ball milling forms alusil alloy powder after 24 hours for subsequent use; Get 20 grams of above-mentioned organic carriers, add 70 grams of aluminium powders, 5 grams of alusil alloy powder, 2 grams of pure borons, fully mix, and then make silicon solar cell aluminium back surface field slurry for 3 times by the three-roll grinder system of grinding.
By the silicon solar cell aluminium back surface field slurry of preparation, on silicon solar cell production line, form after silicon solar cell through silk screen printing, oven dry, co-sintering, observe silicon solar cell surface state and measure flexibility, short circuit current (Isc), open circuit voltage (Voc), fill factor, curve factor (FF), photoelectric conversion efficiency.
The properties mean value of measuring is as shown in table 1:
Table 1
| Index | Surface state | Lower curved (mm) | Isc(A) | Voc(V) | FF% | Efficiency % |
| Embodiment 1 | The ash that do not fall, without aluminium pill, aluminium bubble | ＜1mm | 5.43 | 0.623 | 79 | 17.13 |
| Embodiment 2 | The ash that do not fall, without aluminium pill, aluminium bubble | ＜1mm | 5.45 | 0.608 | 76 | 16.95 |
| Embodiment 3 | The ash that do not fall, without aluminium pill, aluminium bubble | ＜1mm | 5.30 | 0.618 | 78 | 16.63 |
Silicon solar cell aluminium back surface field slurry as shown in table 1, to adopt the present invention to prepare, the silicon solar cell of producing, surface state is good, and bending little, superior electrical property, meets the assembling requirement of silicon solar battery assembly.
Claims (6)
1. a silicon solar cell aluminium back surface field slurry, it is characterized in that this slurry is by aluminium powder, alusil alloy powder, organic carrier, the mixture of one or more of the oxide of pure boron, boron or compound, Metallic Gallium is mixed with and forms, and the weight part ratio of above-mentioned each component is as follows:
55～80 parts of aluminium powders
0.1～10 part, alusil alloy powder
15～30 parts of organic carriers
0.1～5 part, the mixture of one or more of the oxide of pure boron, boron or compound, Metallic Gallium.
2. according to a kind of silicon solar cell aluminium back surface field slurry described in claim l, it is characterized in that: described aluminium powder, alusil alloy Powder Particle Size are 0.5～8 μ m.
3. according to a kind of silicon solar cell aluminium back surface field slurry described in claim l, it is characterized in that: described aluminium powder is spherical.
4. according to a kind of silicon solar cell aluminium back surface field slurry described in claim l, it is characterized in that: described alusil alloy powder is that silica flour is 5～25:100 with the ratio of aluminium powder weight, additional 0.1～5% dolomol is grinding aid, puts into ball grinder ball milling 8～36 hours and obtain after mixing.
5. according to a kind of silicon solar cell aluminium back surface field slurry described in claim l, it is characterized in that: described organic carrier is formed by polymer and organic solvent mixed dissolution, described polymer is one or more the mixture in ethyl cellulose, phenolic resins, polyvinyl butyral resin, polyamide, polyurethane resin, mylar, acrylic resin; Described organic solvent is one or more the mixture in phenmethylol, terpinol, diethylene glycol butyl ether, diethylene glycol monobutyl ether acetate, triethyl citrate, tributyl citrate, acetylation tributyl citrate, lecithin, diethylene glycol ether.
6. the method for preparing silicon solar cell aluminium back surface field slurry described in claim 1, is characterized in that the method is made up of following steps:
(1) polymer is dissolved in organic solvent, forms organic carrier;
(2) prepare alusil alloy powder;
(3) by aluminium powder, silicon aluminium alloy powder, organic carrier, the mixture of one or more of the oxide of pure boron, boron or compound, Metallic Gallium mixes, and grinds through three-roll grinder, makes silicon solar cell aluminium back surface field slurry.
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522156A (en) * | 2011-12-06 | 2012-06-27 | 南昌大学 | Preparation method of aluminum boron slurry for crystalline silicon solar battery |
| CN103177790B (en) * | 2011-12-23 | 2015-08-26 | 比亚迪股份有限公司 | The preparation method of solar cell back surface field transition slurry and preparation method thereof and solar battery sheet and solar battery sheet |
| CN102643615A (en) * | 2012-04-21 | 2012-08-22 | 湖南红太阳光电科技有限公司 | Inorganic adhesive for aluminum pulp of crystalline silicon solar cell and preparation method thereof |
| CN103000247B (en) * | 2012-11-10 | 2015-10-28 | 江苏瑞德新能源科技有限公司 | A kind of solar cell back aluminum slurry powder material adapting to high square resistance shallow junction |
| CN103762249B (en) * | 2013-10-16 | 2016-03-02 | 杭州正银电子材料有限公司 | Crystal silicon solar batteries back surface field passivation aluminum conductive electric slurry and preparation method |
| CN103617820B (en) * | 2013-11-20 | 2016-04-13 | 东莞市精研粉体科技有限公司 | A kind of alloyed powder for aluminum paste of silicon solar cells |
| CN103824653B (en) * | 2014-03-18 | 2016-01-20 | 山西盛驰科技有限公司 | The preparation method of a kind of high-performance crystal silicon solar battery back field slurry |
| CN103824613A (en) * | 2014-03-18 | 2014-05-28 | 山西盛驰科技有限公司 | High-performance back surface field paste for crystalline silicon solar cell |
| CN105448382A (en) * | 2014-09-12 | 2016-03-30 | 湖南利德电子浆料股份有限公司 | Rare-earth doped efficient crystalline silicon solar cell aluminum paste |
| WO2018180441A1 (en) * | 2017-03-27 | 2018-10-04 | 東洋アルミニウム株式会社 | Paste composition for solar battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5366944A (en) * | 1992-03-06 | 1994-11-22 | Minteq International Inc. | Vibratable refractory compositions |
| CN101728439A (en) * | 2009-12-01 | 2010-06-09 | 洛阳神佳电子陶瓷有限公司 | Aluminum pulp composition of crystal silicon solar cell and preparation method thereof |
| CN101944554A (en) * | 2010-09-16 | 2011-01-12 | 浙江大学 | Boron-aluminum common gettering method for silicon slice |
| CN101944555A (en) * | 2010-09-16 | 2011-01-12 | 浙江大学 | Al and B doped silicon solar cell back surface and preparation method thereof |
-
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5366944A (en) * | 1992-03-06 | 1994-11-22 | Minteq International Inc. | Vibratable refractory compositions |
| CN101728439A (en) * | 2009-12-01 | 2010-06-09 | 洛阳神佳电子陶瓷有限公司 | Aluminum pulp composition of crystal silicon solar cell and preparation method thereof |
| CN101944554A (en) * | 2010-09-16 | 2011-01-12 | 浙江大学 | Boron-aluminum common gettering method for silicon slice |
| CN101944555A (en) * | 2010-09-16 | 2011-01-12 | 浙江大学 | Al and B doped silicon solar cell back surface and preparation method thereof |
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