CN101914221A - Organic carrier composition for solar cell back surface field aluminium paste and preparation method thereof - Google Patents
Organic carrier composition for solar cell back surface field aluminium paste and preparation method thereof Download PDFInfo
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Abstract
The invention relates to an organic carrier composition for solar cell back surface field aluminium paste, comprising a main carrier; wherein the main carrier comprises the following components by mass: 3-5% of methylcellulose, 30-45% of terpinol, 20-40% of diethylene glycol monobutyl ether, 10-20% of diethylene glycol monobutyl ether acetate and 0.2-1% of lecithin. The invention also relates to a method for preparing the organic carrier composition used for solar cell back surface field aluminium paste. In the organic carrier composition for solar cell back surface field aluminium paste and preparation method thereof which are provided by the invention, diethylene glycol monobutyl ether acetate is adopted to substitute the traditional o-benzene compound and is taken as solvent and plasticizer, thus eliminating environmental harm of organic carrier.
Description
Technical field
The present invention relates to the thick-film electronic slurry technical field of compositions, relate in particular to a kind of back surface field aluminum paste of solar battery organic carrier composition and preparation method thereof.
Background technology
The high-photoelectric transformation efficiency of single crystal silicon solar cell is 30% in theory, and the top efficiency of polycrystalline silicon solar cell is 24%.At present, the high conversion efficiency of single crystal silicon solar cell has under lab had large increase, is 24.7%, near the top efficiency value.And polycrystalline silicon solar cell is owing to exist a lot of crystal boundaries, the formed deathnium of these crystal boundaries, and the photovoltaic efficiency of conversion that has caused polysilicon is also well below silicon single crystal, and photoelectric transformation efficiency is 19.8%.Efficient is lower than laboratory efficient during suitability for industrialized production, the silicon single crystal efficient of solar industry production at present more than 17%, polysilicon efficient is then more than 16%.
From the at present domestic and international silicon solar cell condition of production, most p type silicon materials that adopt are made n-p-p
+The type battery.Diffusion n type silicon forms the solar cell substrate on p type silicon materials, and silicon chip surface is coated with antireflective coating to be reduced sun reflection of light.The thickness of p type silicon is about 200 μ m, by diffuseing to form p-n junction.By silk-screen printing technique silver slurry, silver-colored aluminum electrode slurry, aluminum electrode slurry are printed on silicon chip surface then, form firm contacts electrode behind the sintering.
In the manufacturing process of silicon solar cell, because the aluminium low price, purity is easy to control, and easily forms good ohmic contact with alloying with silicon, so usually is used to make the back electrode of silicon solar cell.In addition, the adulterated al element can form p-p at cell backside in the p of routine type silicon
+Knot forms back of the body electric field structure (Back Surface Field), is commonly called as aluminium back of the body field.The fine aluminum electrode slurry has following some material impact for the output characteristic of silicon solar cell: (1) improves open circuit voltage; (2) reduce series resistance; (3) improve the long wave response, effectively reduce back of the body recombination-rate surface.
Solar cell is started late with the domestic research of paste compound, unit such as Yunnan semiconductor factory, the expensive institute of elder brother researches and develops out " efficient, low-cost crystal-silicon solar cell and special-purpose electrocondution slurry thereof " during " eight or five ", and the performance of silver-colored slurry, aluminum electrode slurry and silver-colored aluminium paste has reached U.S. Ferro company corresponding product level.Present domestic solar cell with the main manufacturer of aluminum electrode slurry have join sunlight, Beijing mulberry in Guangzhou Ruxing Technology Development Co., Ltd, Yunnan Kunming Institute of Precious Metals, Beijing can science and technology, the excellent happy photoelectricity in Wuhan etc.The scholar emerging RX8 serial crystal silicon solar cell of having developed in Guangzhou is carried on the back the electric field aluminum electrode slurry, has filled up the blank of China's electrocondution slurry, has created good economic benefit.
Aluminium paste is as a kind of paste compound product, and it mainly is made up of conductive phase (aluminium powder), glassy bond phase, additive, organic carrier.Wherein organic carrier is made up of solvent, tackiness agent, softening agent, tensio-active agent etc. usually as the one-tenth membrane carrier of aluminium paste.Major function is function to be conducted electricity aluminium powder mutually become the paste slurry with the blending dispersion such as unorganic glass powder with high temperature adhesives effect, make its firm sticking on the substrate in screen printing process, form good rete, form surfacing, densification, the good back electrode of slick electroconductibility behind the sintering.
In the prior art, solvent in the above-mentioned organic carrier composition composition and softening agent adopt adjacent phenyl ester class mostly, so not only can cause environmental pollution to worsen, but also can jeopardize the healthy of direct or indirect exposed population group.In addition, in the prior art in the composition of organic carrier composition binding agent then adopted the strong excessively resol of cohesive force, make dried aluminium paste big to the stress that silicon chip produces, be easy to generate fragment.
Summary of the invention
The purpose of this invention is to provide a kind of back surface field aluminum paste of solar battery with organic carrier composition and preparation method thereof, to solve the above-mentioned defective that organic carrier composition exists in the prior art.
In order to achieve the above object, technical scheme of the present invention proposes a kind of back surface field aluminum paste of solar battery organic carrier composition, comprises main carrier, and the quality proportioning of the composition that described main carrier comprises and each composition is:
Ethyl cellulose, 3-5%; Terpineol 350,30-45%; The Diethylene Glycol butyl ether, 20-40%; Diethylene Glycol-butyl ether acetic ester, 10-20%; Yelkin TTS, 0.2-1%.
Above-mentioned back surface field aluminum paste of solar battery also comprises assistant carrier with organic carrier composition, and described main carrier and assistant carrier are by 20: 1-10: 1 mass ratio mixes, and the composition that comprises of described assistant carrier and the quality proportioning of each composition are:
Terpineol 350,70-80%; Ethyl cellulose, 15-20%; Rosin 1-5%.
Above-mentioned back surface field aluminum paste of solar battery is with in the organic carrier composition, and the quality proportioning of the composition that described assistant carrier comprises and each composition is:
Terpineol 350,80%; Ethyl cellulose, 18%; Rosin 2%.
Technical scheme of the present invention also proposes a kind of method for preparing back surface field aluminum paste of solar battery with organic carrier composition, comprising:
By each composition quality proportioning of aforesaid organic carrier composition described each mixture of ingredients is dropped in reactor stir, intensification and constant temperature handles;
The reactant cooling back that obtains in the described reactor is filtered with silk screen.
The above-mentioned back surface field aluminum paste of solar battery for preparing is with in the method for organic carrier composition, and the step that stirring in the described reactor, intensification and constant temperature are handled specifically comprises: after being warming up to 60-80 ℃ under low whipping speed 80-120 rev/min the state constant temperature 3-5 hour.
The above-mentioned back surface field aluminum paste of solar battery for preparing is with in the method for organic carrier composition, and described silk screen is a 400-600 purpose silk screen.
Technical scheme of the present invention also proposes a kind of back surface field aluminum paste of solar battery, and the quality proportioning of the composition that this back field aluminum paste comprises and each composition is:
Glass composition, 1-3%; Aluminium powder, 70-76%; As each described organic carrier composition of claim 1～3,20-30%.
In the above-mentioned back surface field aluminum paste of solar battery, the quality proportioning of the composition that described glass composition comprises and each composition is:
Bi
2O
3, 65-75%; SiO
2, 5-10%; B
2O
3, 6-8%; Al
2O
3, 0-2%; ZnO, 8-10%; CaO 0-2%; Property-modifying additive, 0-2%.
In the above-mentioned back surface field aluminum paste of solar battery, the composition of described property-modifying additive comprises: TiO
2, ZrO
2, V
2O
5And CaF.
A kind of method for preparing back surface field aluminum paste of solar battery of the last proposition of technical scheme of the present invention comprises:
Prepare each composition by following quality proportioning: glass composition, 1-3%; Aluminium powder, 70-76%; Aforesaid organic carrier composition, 20-30%;
Ready each composition is fully mixed, on three-roll grinder, grind then and be separated into fineness less than 15 μ m, viscosity back field aluminum paste composition at 28000-36000PaS.
The above-mentioned back surface field aluminum paste of solar battery that technical solution of the present invention provides is with in organic carrier composition and preparation method thereof, replace traditional adjacent benzene class as solvent and softening agent by employing Diethylene Glycol-butyl ether acetic ester, thereby eliminated the environmental hazard of organic carrier; Further, it has also adopted a kind of assistant carrier that is mixed by Terpineol 350, ethyl cellulose and rosin, as to the replenishing of main carrier, thereby good dry film sticking power can be provided and be unlikely to produce too much stress simultaneously, and then make fragmentation rate reduce greatly.
Description of drawings
Fig. 1 prepares the method embodiment schema of back surface field aluminum paste of solar battery with organic carrier composition for the present invention;
Fig. 2 prepares the method embodiment schema of back surface field aluminum paste of solar battery for the present invention;
Fig. 3 utilizes the solar cell that back field aluminum paste of the present invention makes and the performance data contrast synoptic diagram of conventional solar cells.
Embodiment
Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
Before explanation the present invention, at first some ultimate principles and the mechanism that the present invention relates to are simply introduced.
The first, the general requirement that back surface field aluminum paste of solar battery is selected with organic carrier system is as follows:
Chemically inert material: carrier contacts with aluminum particle chemical reaction does not take place under the situation that is included in heating;
Can form suspensoid: on the interface that carrier and aluminum particle are in contact with one another, surface tension should be as far as possible little, to guarantee well infiltration between solid and the liquid; The polar group that the electrolyte stable of making should be arranged in the carrier, the excessive condensing agent that do not have, it is rotten to avoid slurry to condense when long-term storage;
The rheological that appropriateness is arranged: when carrier combines with aluminum particle, can provide cancellated cohesion composition, to form pseudo-plasticity thixotroping system, modest viscosity also can be regulated;
The volatility that appropriateness is arranged: carrier at room temperature saturated vapor pressure is low, but at a certain temperature, wherein solvent should be volatile, at high temperature can volatilize rapidly, makes the slurry of silk screen printing not produce secondary flow;
Adhesive property is good: carrier can soak at substrate surface, so its surface tension should be suitable, makes sticking on the silicon chip that it can be firm;
Other characteristics: carrier should not have fixedly boiling point, progressively gasifies in heat-processed, burns; Avoid causing the pin hole of film surface; Under certain high temperature, answer perfect combustion not stay ash content.
The second, the optional reagent of the composition of organic carrier, function and each composition is as shown in table 1:
Table 1 organic carrier composition and function
Simple introduction based on above-mentioned ultimate principle and mechanism will be described in detail the present invention below.
Back surface field aluminum paste of solar battery of the present invention is made up of solvent, dispersion agent and tackiness agent with the embodiment of organic carrier composition, it adopts Terpineol 350, Diethylene Glycol butyl ether, Diethylene Glycol-butyl ether acetic ester double solvents system, add Yelkin TTS, the synthetic organic carrier of ethyl cellulose simultaneously as main carrier, the quality of main carrier is composed as follows: ethyl cellulose, 3-5%; Terpineol 350,30-45%; The Diethylene Glycol butyl ether, 20-40%; Diethylene Glycol-butyl ether acetic ester, 10-20%; Yelkin TTS, 0.2-1%.In this main carrier owing to adopt Diethylene Glycol-butyl ether acetic ester to replace traditional adjacent benzene class as solvent and softening agent, thereby eliminated the environmental hazard of organic carrier.
The foregoing description has also adopted a kind of assistant carrier that is mixed by Terpineol 350, ethyl cellulose and rosin, and above-mentioned main carrier and this assistant carrier are by 20: 1-10: 1 mass ratio mixes.The concrete quality of assistant carrier is composed as follows: Terpineol 350,70-80%; Ethyl cellulose, 15-20%; Rosin 1-5%.Preferred mass consists of: Terpineol 350,80%; Ethyl cellulose, 18%; Rosin 2%.The back surface field aluminum paste of solar battery of present embodiment adopts above-mentioned assistant carrier as to the replenishing of main carrier with organic carrier composition, good dry film sticking power can be provided and be unlikely to produce too much stress simultaneously, and then make fragmentation rate reduce greatly.
Further effect and the proportioning size Consideration of back surface field aluminum paste of solar battery of the present invention with each composition in the organic carrier composition elaborated below in conjunction with aforesaid ultimate principle and mechanism and the above embodiments.
Because the carrier system that single solvent is made is being deposited, is being volatilized easily when printing, slurry viscosity is increased, or carrier is not volatile, rete is more moistening after the drying, the rete edge is uneven during sintering, the surface reduces electrical property because the concentrated volatilization of solvent causes pin hole and defective more, therefore should select for use mixed solvent as organic carrier.The present invention has promptly adopted the double solvents system of Terpineol 350, Diethylene Glycol butyl ether, Diethylene Glycol-butyl ether acetic ester, and it meets the infrared 200-240 of domestic solar cell ℃, (chain type or box) drying process of 60-100 second.Difficult volatilization in cold zone (70 ℃～150 ℃), being beneficial to slurry like this has competent time levelling; Strengthen at 150 ℃～240 ℃ volatile performances, thereby help slurry volatilization fast in drying course, shorten the process time, it is too fast can not volatilize again simultaneously, causes slurry viscosity to increase and stops up mesh easily.Diethylene Glycol-butyl ether acetic ester is a solvent action, plays certain softening agent effect again, makes slurry have good plastic rheological, the fine levelling film forming of energy in printing process, and do not produce wandering/defectives such as tooth limit.
Yelkin TTS is the natural amphoteric ionic surface active agent by the negatively charged ion of phosphoric acid fat type and the cation composition of quaternary ammonium form, has hydrophobic group and hydrophilic group in the molecule.In aluminum electrode slurry, lecithin molecules chain one end is adsorbed on the aluminum particle surface, and the other end is suspended in the organic carrier, owing to the end institute that is suspended in the carrier is electrically charged identical, repels each other.Owing to existing, this repulsion make whole system keep stable suspended state between particle, and good dispersion.Lecithin content is less than 0.2%, and aluminum particulate fails promoting agent is formed saturated absorption, and particle surface is not effectively covered by promoting agent, and dispersion, the stabilization of dispersion agent are not obvious; Lecithin content increases, and will increase its fraction of coverage to particle, and stability of slurry is obviously improved, and when content reached 0.6%, it is best that stability reaches; When lecithin content continue to increase greater than 1% the time, when surpassing the required amount of saturated absorption that solids form, excessive promoting agent can be built bridge between particle and be caused flocculating, thereby makes the aluminum electrode slurry stability decreases.
Adhesive fiber element and various types of resins all are polymer substances, and its molecular weight is big, for big long-chain (band side chain) structure, are interconnected to form interconnected tridimensional network in the space, so are bonded together solid powder in the slurry is interconnection.The ethyl cellulose of using in the slurry, oxyethyl group content are 45～46%, and molecular weight is unsuitable excessive, otherwise easily produces gel.Ethyl cellulose begins thermolysis about 200 ℃, decomposed substantially to 400 ℃.The flowability that how much directly influences slurry of consumption.Add-on is less than 2%, and the slurry levelling property is poor, and film surface is uneven, and slurry can not be transferred on the substrate fully during silk screen printing, easy residual slurry on the silk screen; Mierocrystalline cellulose adds greater than more than 5%, and slurry viscosity is bigger than normal, and slurry is poor to the wetting power of silk screen, is difficult to printing, and also difficult volatilization is clean during sintering simultaneously, thereby causes aluminium bag/defectives such as jaundice appearance.
The assistant carrier of the foregoing description is as a kind of high viscosity vehicles, can significantly improve aluminium paste dry film sticking power, it as a kind of dry film sticking power conditioning agent, avoided owing to phenolic resin bonded power is crossed the strong high defective of fragmentation rate that causes, the ratio of itself and main carrier is 20: 1-10: 1, ratio is too high can to cause that equally the too high generation stress of dry film sticking power is big, causes fragmentation rate to increase; Ratio is crossed to hang down and can be caused dry film sticking power not enough again, and causes electrode to come off when sintering.
Below will introduce the preparation method of the foregoing description back surface field aluminum paste of solar battery with organic carrier composition, as shown in Figure 1, this method may further comprise the steps:
S101, by predetermined quality proportioning each mixture of ingredients is dropped in reactor stir, intensification and constant temperature handles;
Wherein, mixture again specifically by the quality proportioning 20: 1-10: 1 first mixture (main carrier) and second mixture (assistant carrier) are formed;
The quality of first mixture is composed as follows: ethyl cellulose, 3-5%; Terpineol 350,30-45%; The Diethylene Glycol butyl ether, 20-40%; Diethylene Glycol-butyl ether acetic ester, 10-20%; Yelkin TTS, 0.2-1%;
The quality of second mixture is composed as follows: Terpineol 350,70-80%; Ethyl cellulose, 15-20%; Rosin 1-5%; Preferred mass consists of: Terpineol 350,80%; Ethyl cellulose, 18%; Rosin 2%.
And after the step that this step stirs in reactor, intensification and constant temperature are handled specifically is meant and is warming up to 60-80 ℃ under low whipping speed 80-120 rev/min the state constant temperature 3-5 hour.
S102, the reactant that obtains in reactor cooling back is filtered with silk screen, obtain the finished product of organic carrier composition.
Be uniformly mixed in reactor and fully reaction through step S101 each component, this step then question response thing cooling is the silk screen filter of 400-600 (order) with the net footpath afterwards, obtains back field aluminum paste composition organic carrier finished product.
Utilize the composition that the back surface field aluminum paste of solar battery of the organic carrier composition preparation of the foregoing description comprises and the quality proportioning of each composition to be: glass composition, 1-3% is preferably 1-2.5%; Aluminium powder, 70-76%; Above-mentioned organic carrier composition, 20-30%.Wherein the quality proportioning of the composition that glass composition comprised and each composition is respectively again: Bi
2O
3, 65-75%; SiO
2, 5-10%; B
2O
3, 6-8%; Al
2O
3, 0-2%; ZnO, 8-10%; CaO 0-2%; Property-modifying additive is (by TiO
2, ZrO
2, V
2O
5And CaF forms), 0-2%.
Correspondingly, the preparation method of above-mentioned back surface field aluminum paste of solar battery may further comprise the steps as shown in Figure 2:
S201, prepare each composition by the weighing of quality proportion speed;
Each composition and quality proportioning are as follows: glass composition, 1-3%; Aluminium powder, 70-76%; Above-mentioned organic carrier composition, 20-30%.The glass composition here as mentioned above, mass component is as follows: Bi
2O
3, 65-75%; SiO
2, 5-10%; B
2O
3, 6-8%; Al
2O
3, 0-2%; ZnO, 8-10%; CaO 0-2%; Property-modifying additive is (by TiO
2, ZrO
2, V
2O
5And CaF forms), 0-2%.
S202, load weighted each composition is fully mixed;
S203, mixture ground on three-roll grinder be separated into back field aluminum paste composition;
The back field aluminum paste composition fineness of finished product is less than 15 μ m, and viscosity is then between 28000-36000PaS.
Above-mentioned aluminum paste composition leadless environment-friendly by the preparation of embodiment of the invention organic carrier composition, meet the RoHS of European Union (Restriction of Hazardous Substances, " about being limited in the instruction of using some objectionable constituent in the electronic and electrical equipment "), U.S. REACH (REGULATION concerning the Registration, Evaluation, Authorization and Restriction of Chemicals, " chemical registration, assessment, the permission and the restriction ") environmental requirement, back of the body field contacts with silicon chip formation good ohmic simultaneously, sticking power is good, the battery conversion efficiency height, the fragmentation rate of battery sheet is low.
Back field aluminum paste composition with the present embodiment preparation, through 320 order Stainless Steel Wire reticulated printings to the solar battery back surface, number to be printed 0.9 gram, with positive silver electrode together at belt speed 4650mm, high temperature 920 degree sintering, the standard solar cells plate performance perameter comparative result of resulting solar cell and test usefulness as shown in Figure 3.By diagram as can be seen, on every index, all show the characteristic that is better than the testing standard sheet by the prepared solar cell of the back field aluminum paste of present embodiment.
In sum, the above-mentioned back surface field aluminum paste of solar battery that technical solution of the present invention provides is with in organic carrier composition and preparation method thereof, replace traditional adjacent benzene class as solvent and softening agent by employing Diethylene Glycol-butyl ether acetic ester, thereby eliminated the environmental hazard of organic carrier; Further, it has also adopted a kind of assistant carrier that is mixed by Terpineol 350, ethyl cellulose and rosin, as to the replenishing of main carrier, thereby good dry film sticking power can be provided and be unlikely to produce too much stress simultaneously, and then make fragmentation rate reduce greatly.Adopt the aluminium paste of above-mentioned organic carrier composition preparation to have good dispersiveness or suspension, the not stratified not sedimentation of postpone aluminum slurry for a long time, have even coating during printing, make the pressed powder in the aluminium paste have good cohesive strength and little after the drying the stress of silicon chip generation.Show the monocrystaline silicon solar cell transformation efficiency that utilizes embodiment of the invention preparation more than 17.3% through practice, polysilicon solar cell transformation efficiency transformation efficiency all reaches or has exceeded the similar level of prior art more than 16%.
More than be preferred forms of the present invention, according to content disclosed by the invention, those of ordinary skill in the art can expect some identical, replacement schemes apparently, all should fall into the scope of protection of the invention.
Claims (10)
1. a back surface field aluminum paste of solar battery organic carrier composition is characterized in that, comprises main carrier, and the quality proportioning of the composition that described main carrier comprises and each composition is:
Ethyl cellulose, 3-5%; Terpineol 350,30-45%; The Diethylene Glycol butyl ether, 20-40%; Diethylene Glycol-butyl ether acetic ester, 10-20%; Yelkin TTS, 0.2-1%.
2. back surface field aluminum paste of solar battery organic carrier composition according to claim 1, it is characterized in that, also comprise assistant carrier, described main carrier and assistant carrier are by 20: 1-10: 1 mass ratio mixes, and the composition that comprises of described assistant carrier and the quality proportioning of each composition are:
Terpineol 350,70-80%; Ethyl cellulose, 15-20%; Rosin 1-5%.
3. as back surface field aluminum paste of solar battery organic carrier composition as described in the claim 2, it is characterized in that the quality proportioning of the composition that described assistant carrier comprises and each composition is:
Terpineol 350,80%; Ethyl cellulose, 18%; Rosin 2%.
4. a method for preparing back surface field aluminum paste of solar battery with organic carrier composition is characterized in that, comprising:
By each composition quality proportioning of each described organic carrier composition of claim 1～3 described each mixture of ingredients is dropped in reactor stir, intensification and constant temperature handles;
The reactant cooling back that obtains in the described reactor is filtered with silk screen.
5. as described in claim 4, prepare the method for back surface field aluminum paste of solar battery with organic carrier composition, it is characterized in that the step that stirring in the described reactor, intensification and constant temperature are handled specifically comprises: after being warming up to 60-80 ℃ under low whipping speed 80-120 rev/min the state constant temperature 3-5 hour.
6. as described in claim 5, prepare the method for back surface field aluminum paste of solar battery, it is characterized in that described silk screen 400-600 purpose silk screen with organic carrier composition.
7. a back surface field aluminum paste of solar battery is characterized in that, the quality proportioning of the composition that this back field aluminum paste comprises and each composition is:
Glass composition, 1-3%; Aluminium powder, 70-76%; As each described organic carrier composition of claim 1～3,20-30%.
8. back surface field aluminum paste of solar battery as claimed in claim 7 is characterized in that, the quality proportioning of the composition that described glass composition comprises and each composition is:
Bi
2O
3, 65-75%; SiO
2, 5-10%; B
2O
3, 6-8%; Al
2O
3, 0-2%; ZnO, 8-10%; CaO 0-2%; Property-modifying additive, 0-2%.
9. back surface field aluminum paste of solar battery as claimed in claim 8 is characterized in that the composition of described property-modifying additive comprises: TiO
2, ZrO
2, V
2O
5And CaF.
10. a method for preparing back surface field aluminum paste of solar battery is characterized in that, comprising:
Prepare each composition by following quality proportioning: glass composition, 1-3%; Aluminium powder, 70-76%; As each described organic carrier composition of claim 1～3,20-30%;
Ready each composition is fully mixed, on three-roll grinder, grind then and be separated into fineness less than 15 μ m, viscosity back field aluminum paste composition at 28000-36000PaS.
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| CN103578598B (en) * | 2012-07-28 | 2016-01-13 | 比亚迪股份有限公司 | Crystalline silicon SE solar cell phototropic face Seed Layer slurry and preparation method thereof, crystalline silicon SE solar cell piece and preparation method thereof |
| CN102898974B (en) * | 2012-09-27 | 2015-04-01 | 广州市儒兴科技开发有限公司 | Organic bond and preparation method thereof for front silver paste of crystalline silicon solar cell |
| CN102903419A (en) * | 2012-09-27 | 2013-01-30 | 广州市儒兴科技开发有限公司 | Silver paste at front of crystalline silicon solar cell |
| CN102903419B (en) * | 2012-09-27 | 2015-07-15 | 广州市儒兴科技开发有限公司 | Silver paste at front of crystalline silicon solar cell |
| CN102898974A (en) * | 2012-09-27 | 2013-01-30 | 广州市儒兴科技开发有限公司 | Organic bond and preparation method thereof for front silver paste of crystalline silicon solar cell |
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| CN105340032A (en) * | 2013-07-29 | 2016-02-17 | 株式会社村田制作所 | Internal electrode paste |
| CN103545013B (en) * | 2013-07-29 | 2016-06-08 | 广州市儒兴科技开发有限公司 | A kind of local aluminum special aluminium paste of back surface field crystal-silicon solar cell and preparation method thereof |
| CN105340032B (en) * | 2013-07-29 | 2018-09-14 | 株式会社村田制作所 | Internal electrode cream |
| CN113555146A (en) * | 2021-09-22 | 2021-10-26 | 西安宏星电子浆料科技股份有限公司 | High-acid-resistance medium slurry |
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Application publication date: 20101215 |