WO2019183933A1 - Pâte conductrice côté avant de cellule solaire en silicium cristallin, son procédé de préparation et cellule solaire - Google Patents

Pâte conductrice côté avant de cellule solaire en silicium cristallin, son procédé de préparation et cellule solaire Download PDF

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WO2019183933A1
WO2019183933A1 PCT/CN2018/081376 CN2018081376W WO2019183933A1 WO 2019183933 A1 WO2019183933 A1 WO 2019183933A1 CN 2018081376 W CN2018081376 W CN 2018081376W WO 2019183933 A1 WO2019183933 A1 WO 2019183933A1
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solar cell
crystalline silicon
silicon solar
oxide etchant
conductive paste
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PCT/CN2018/081376
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English (en)
Chinese (zh)
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张�杰
刘小丽
孙丰振
李宇
黄玉平
李德林
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深圳市首骋新材料科技有限公司
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Priority to PCT/CN2018/081376 priority Critical patent/WO2019183933A1/fr
Priority to CN201880000363.1A priority patent/CN110557965B/zh
Publication of WO2019183933A1 publication Critical patent/WO2019183933A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys

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  • the invention belongs to the technical field of solar cells, and particularly relates to a front side conductive paste of a crystalline silicon solar cell, a preparation method thereof and a solar cell.
  • Solar energy is an inexhaustible clean energy source. With the depletion of non-renewable energy sources such as coal and oil, the development and use of solar energy has become a hot spot. Solar cells developed based on this idea are an important means of utilizing solar energy. At present, the realization of industrialized crystalline silicon solar cells has become a model for solar cell applications.
  • a conductive paste is applied to the silicon wafer by screen printing, and a front electrode is formed on the front surface of the silicon wafer by sintering.
  • the front electrode of the sintered crystalline silicon solar cell needs to be firmly adhered on the silicon wafer, the gate line is narrow and high, the light shielding area is small, and the welding is easy, and the conductive paste for the front electrode of the silicon solar cell needs to have the silicon nitride penetrated during the sintering process.
  • a common conductive paste on the front side of a crystalline silicon solar cell contains silver powder, glass frit, and an organic carrier, and the conductive paste is sintered to form a front electrode.
  • the oxide etchant in the conductive paste etches and penetrates the anti-reflective insulating layer of the front side or the illuminated side of the crystalline silicon solar cell such as silicon nitride, titanium oxide, aluminum oxide, silicon oxide or silicon oxide/oxidation. Titanium causes the silver powder to contact the substrate of the crystalline silicon solar cell to form a front electrode.
  • the conventional front conductive paste and the used glass powder can not well etch the anti-reflection insulating layer on the surface of the cell, and the surface electrode formed by the front electrode and the surface of the silicon wafer has high contact resistance, thereby affecting The photoelectric conversion efficiency of the battery sheet.
  • the technical problem to be solved by the present invention is to provide a front side conductive paste of a crystalline silicon solar cell and a preparation method thereof, so as to solve the problem that the existing front conductive paste cannot effectively etch the anti-reflective insulating layer on the surface of the cell sheet. Therefore, the resistance value of the front electrode contacting the surface of the silicon wafer is increased, and finally the photoelectric conversion efficiency of the battery sheet is lowered.
  • the present invention also provides a method for fabricating a front electrode of a crystalline silicon solar cell and a solar cell.
  • a front side conductive paste of a crystalline silicon solar cell in terms of 100 parts by weight, comprising the following raw material components:
  • the oxide etchant contains at least Pb 3 O 4 , CuO, P 2 O 5 and Li 2 O, and the weight ratio of the CuO to Pb 3 O 4 is from 0.1:24 to 10:6.
  • the weight ratio of CuO to P 2 O 5 is from 0.1:10 to 10:0.1, and the weight ratio of CuO to Li 2 O is from 0.1:20 to 10:5.
  • a method for preparing a conductive paste on a front side of a crystalline silicon solar cell comprises at least the following steps:
  • Step S01 Melt the oxide etchant raw material component to obtain an oxide etchant melt, and quench the molten liquid to obtain oxide etchant particles, and obtain a particle size of 0.1 to 5.0 after crushing. Mm of an oxide etchant powder;
  • Step S02. The organic carrier raw material is placed in an environment of 40 to 100 ° C for mixing treatment to obtain an organic vehicle;
  • Step S03. The metal powder is mixed with the oxide etchant powder obtained in the step S01 and the organic vehicle obtained in the step S02 to obtain a front side conductive paste of the crystalline silicon solar cell.
  • a method for fabricating a front electrode of a crystalline silicon solar cell includes at least the following steps:
  • the front side conductive paste of the crystalline silicon solar cell as described above is printed on the surface of the insulating film by printing, and then sequentially dried, sintered, and cooled to obtain a front surface electrode of the crystalline silicon solar cell.
  • the front surface conductive paste of the crystalline silicon solar cell provided by the present invention contains Pb 3 O 4 , CuO, P 2 O 5 and Li 2 O components in the oxide etchant, and these The components are present in a specific weight ratio, and the components of these specific weight ratios can exhibit excellent etching performance and adhesion, so that the oxide etchant can dissolve enough silver from the silver powder during the sintering process to dissolve the silver.
  • One part of the oxide etchant liquid is used to wet the metal powder and promote sintering thereof, and the other part flows to the surface of the solar cell to react with the anti-reflection layer, which can effectively etch the anti-reflection layer and dissolve in the cooling process.
  • the silver in the oxide etchant liquid precipitates to form tiny nano silver particles, which makes the metal powder form good ohmic contact with silicon, greatly reduces the resistance of the front electrode, and finally obtains low contact resistance, good electrical conductivity, and adhesion. Strong frontal electrode.
  • the preparation method of the front side conductive paste of the crystalline silicon solar cell provided by the invention has simple process conditions, and the obtained front conductive paste component has uniform composition and good performance, and is suitable for industrial mass production.
  • the method for fabricating the front electrode of the crystalline silicon solar cell provided by the invention adopts the conductive paste on the front side of the crystalline silicon solar cell provided above, and the oxide etchant can dissolve enough silver from the silver powder during the sintering process to dissolve the silver.
  • One part of the oxide etchant liquid is used to wet the metal powder and promote sintering thereof, and the other part flows to the surface of the solar cell to react with the anti-reflection layer, which can effectively etch the anti-reflection layer and dissolve in the cooling process.
  • the silver in the oxide etchant liquid precipitates to form tiny nano silver particles, which makes the metal powder form good ohmic contact with silicon, greatly reduces the resistance of the front electrode, and finally obtains low contact resistance, good electrical conductivity, and adhesion. Strong frontal electrode.
  • the crystalline silicon solar cell provided by the invention adopts the above-mentioned front electrode structure of the crystalline silicon solar cell, and the solar cell structure exhibits good adhesion, and the silver electrode and the silicon wafer have good ohmic contact, small electrical resistance and good electrical conductivity. The conversion efficiency of the solar cell is improved.
  • FIG. 1 is a schematic view showing a process flow of a method for preparing a conductive paste on a front side of a crystalline silicon solar cell according to the present invention
  • FIG. 2 is a schematic view showing a process flow of a method for fabricating a front electrode of a crystalline silicon solar cell according to the present invention
  • FIG. 3 is a schematic view showing the front conductive paste of the present invention printed on a crystalline silicon semiconductor device having an insulating film on its surface according to the present invention
  • Figure 4 is a schematic view showing the sintered crystalline silicon semiconductor device with the front and back pastes printed in Figure 3 of the present invention
  • Figure 5 is a schematic diagram of a 180 degree tensile test.
  • the invention provides a front side conductive paste of a crystalline silicon solar cell, which comprises the following raw material components in terms of 100 parts by weight:
  • the oxide etchant contains at least Pb 3 O 4 , CuO, P 2 O 5 and Li 2 O, and the weight ratio of the CuO to Pb 3 O 4 is from 0.1:24 to 10:6.
  • the weight ratio of CuO to P 2 O 5 is from 0.1:10 to 10:0; and the weight ratio of CuO to Li 2 O is from 0.1:20 to 10:5.
  • the oxide etchant comprises the following components in an amount of 100% by weight of the total oxide etchant:
  • the oxide of the added element is 0 to 5.0%.
  • the oxide etchant contains components such as Pb 3 O 4 , CuO, P 2 O 5 and Li 2 O, and these components are present in a specific weight ratio, these The composition of a specific weight ratio can exhibit excellent etching performance and adhesion.
  • the oxide etchant is melted into a liquid during the sintering process, sufficient silver can be dissolved from the silver powder, and the oxide etching of the dissolved silver is performed.
  • Part of the liquid is used to wet the metal powder and promote the sintering of the metal powder; another part of the silver oxide etchant liquid flows to the surface of the solar cell to react with the anti-reflection layer, which can effectively etch the anti-reflection layer.
  • the silver dissolved in the oxide etchant liquid precipitates to form tiny nano-silver particles, which makes the metal powder form good ohmic contact with silicon, reduces the resistance, forms low contact resistance, and has good electrical conductivity.
  • a strong front electrode After sintering, during the cooling process, the silver dissolved in the oxide etchant liquid precipitates to form tiny nano-silver particles, which makes the metal powder form good ohmic contact with silicon, reduces the resistance, forms low contact resistance, and has good electrical conductivity.
  • a strong front electrode is used to form tiny nano-silver particles, which makes the metal powder form good ohmic contact with silicon, reduces the resistance, forms low contact resistance, and has good electrical conductivity.
  • the added elements in the oxide of the added element are titanium, aluminum, silver, chromium, lanthanum, copper, cerium, vanadium, sodium, lanthanum, cerium, bromine, cobalt, lanthanum, cerium, lanthanum, cerium, iron, lanthanum, One or two or more of manganese, magnesium, nickel, calcium, tin, arsenic, zirconium, potassium, phosphorus, indium, gallium, antimony, and the like.
  • the oxide etchant includes not only oxides obtained by chemical methods and oxides obtained after high-temperature treatment, but also carbonates, phosphates, fluorides thereof and the like containing cations, for example,
  • the lithium oxide Li 2 O can be substituted with Li 2 CO 3 .
  • the oxide of copper includes CuO and Cu 2 (OH) 2 CO 3 CuO
  • the oxide of zinc includes ZnO and Zn 3 (PO 4 ) 2
  • the oxide of calcium includes CaO and CaCO 3 . .
  • the oxide etchant may be crystalline or amorphous or a mixture of amorphous and crystalline.
  • the metal powder is at least one of silver, gold, platinum, copper, iron, nickel, zinc, titanium, cobalt, chromium, aluminum, manganese, palladium, and rhodium.
  • the metal powder is at least one of silver-coated copper, iron, nickel, zinc, titanium, cobalt, chromium, aluminum, and manganese, wherein the silver coating layer has a thickness of 10 to 50 nm.
  • the metal powder is a mixture of a non-silver-coated metal powder and a silver-coated metal powder, wherein a weight ratio of the non-silver-coated metal powder to the silver-coated metal powder is 5/ 95 ⁇ 95/5, the non-silver coated metal powder is at least one of silver, gold, platinum, copper, iron, nickel, zinc, titanium, cobalt, chromium, aluminum, manganese, palladium, iridium; The metal powder is at least one of copper, iron, nickel, zinc, titanium, cobalt, chromium, aluminum, and manganese, and the silver coating layer has a thickness of 10 to 50 nm.
  • the organic vehicle in the present invention includes an organic solvent, a polymer, a wetting and dispersing agent, a thixotropic agent, and other functional additives.
  • the weight of the organic vehicle is 100 parts by weight, including the following components: 50 to 95 parts of an organic solvent; 1 to 40 parts of a polymer; 0.1 to 10 parts of a wetting and dispersing agent; and 1 to 20 parts of a thixotropic agent.
  • the organic solvent is selected from the group consisting of terpineol, ethylene glycol butyl ether acetate, ethylene glycol ethyl ether acetate, dodecyl alcohol ester, diethylene glycol butyl ether, triethylene glycol butyl ether, and tripropylene glycol methyl ether.
  • terpineol ethylene glycol butyl ether acetate
  • ethylene glycol ethyl ether acetate ethylene glycol ethyl ether acetate
  • dodecyl alcohol ester diethylene glycol butyl ether
  • triethylene glycol butyl ether triethylene glycol butyl ether
  • tripropylene glycol methyl ether At least one of high boiling solvents such as terpenes.
  • the polymer is selected from at least one of ethyl cellulose, methyl cellulose, cellulose and derivatives thereof, acrylic resin, alkyd resin, and polyester resin.
  • the wetting and dispersing agent is selected from the group consisting of fatty acids (oleic acid, stearic acid, etc.), amide derivatives of fatty acids (oleic acid amide, stearic acid amide, etc.), ester derivatives of fatty acids, polyethylene wax, polyethylene glycol. One or more of them are mainly used to help disperse inorganic powders in an organic vehicle.
  • the thixotropic agent is selected from one or more of hydrogenated castor oil derivatives, polyamide waxes, polyureas, fumed silicas, and is mainly used to increase the thixotropy of the slurry during printing, so that the silver paste When sheared during printing, the consistency becomes small, and it is easy to screen-print. When the shearing is stopped, the consistency is increased to ensure that the electrode has an excellent aspect ratio.
  • the organic vehicle may further include other functional assistants in an amount of 0.1-20 parts by weight, selected from the group consisting of polymethylphenylsiloxane, polyphenylsiloxane, and phthalic acid.
  • Ester such as diethyl phthalate, dibutyl phthalate, etc.
  • microcrystalline wax such as diethyl phthalate, dibutyl phthalate, etc.
  • PVB polyvinyl butyral
  • polyether polyester modification One or more of an organosiloxane and an alkyl-modified organosiloxane.
  • the other functional assistants may be optionally added according to requirements, such as adding microcrystalline wax to reduce surface tension, adding dibutyl phthalate (DBP), etc. to improve the flexibility of the slurry, and adding polyvinyl butyral. (PVB) and the like improve adhesion.
  • the method for preparing a front side conductive paste of a crystalline silicon solar cell comprises the following steps:
  • the step of preparing the oxide etchant is as follows: the oxide etchant raw material is weighed according to the raw material ratio as described above and uniformly mixed; and the uniformly mixed oxide etchant raw material is placed in a heating furnace for heating Up to 900-1100 ° C, and maintaining at 900-1100 ° C for 60-180 min, to obtain a molten liquid oxide etchant; quenching the molten liquid oxide etchant to obtain oxide etchant particles
  • the oxide etchant particles are dried at a temperature of 60 to 80 ° C; the dried oxide etchant particles are subjected to crushing treatment to obtain an oxide etchant powder having a particle size of 0.5 to 5.0 ⁇ m. Then, it is dried in a drying oven at 80 to 100 ° C to obtain a dried oxide etchant powder.
  • the quenching method is to pour the molten liquid oxide etchant into water at 5-25 ° C or to cool in flowing room temperature air at a temperature of 25 ° C or below.
  • the above-mentioned crushing of the oxide etched particles may be performed by a ball mill for ball milling, or other methods may be used to make the particle size of the oxide etchant smaller.
  • the organic carrier is prepared as follows: the raw materials of the organic carrier are sequentially weighed according to the weight ratio of the organic carrier raw materials mentioned above, and the weighed organic carrier raw materials are placed in a container, and stirred and mixed at a temperature of 40 to 100 ° C for 100 to 160 minutes. An organic vehicle is obtained.
  • the method for fabricating the front side conductive paste of the crystalline silicon solar cell of the present invention further has the following alternative method:
  • the oxide etchant and the metal powder are first mixed to obtain a first mixture, and the first mixture is mixed with an organic vehicle, and then subjected to a grinding treatment to obtain a front electrode conductive paste of the crystalline silicon solar cell. material.
  • the above oxide etchant and the organic carrier are first mixed to obtain a first mixture, and then the metal powder is added to the first mixture, and then ground to obtain a front electrode of the crystalline silicon solar cell. Slurry.
  • the metal powder and the organic carrier are first mixed to obtain a first mixture, and then an oxide etchant is added to the first mixture, followed by grinding treatment to obtain a front electrode conductive paste of the crystalline silicon solar cell. material.
  • 20 to 60 parts by weight of the metal powder and 20 to 60 parts by weight of the organic vehicle are first mixed with 100 parts by weight of the metal powder, the organic vehicle, and the oxide etchant, respectively. a first mixture; further mixing 40 to 80 parts by weight of the oxide etchant and a portion of the organic vehicle to obtain a second mixture, and then mixing the first mixture and the second mixture, and grinding to obtain a crystalline silicon solar cell
  • the front electrode is conductive paste.
  • the present invention also provides a method for fabricating a front electrode of a crystalline silicon solar cell.
  • the manufacturing method relates to a crystalline silicon semiconductor device having an insulating film laminated on its surface, the crystalline silicon semiconductor device having a structure as shown in FIG. 3, 100 being a crystalline silicon cell having a first surface and a second surface, in the first A P/N junction 200 and an insulating film 300 are sequentially stacked on a surface, and a back surface silver paste 500 and a back aluminum paste 600 are printed on the first surface.
  • the insulating film 300 may be a silicon nitride film or a titanium oxide film. At least one of an aluminum oxide film and a silicon oxide film.
  • the method for fabricating the front electrode of the crystalline silicon solar cell includes at least the following steps:
  • Step S04. Providing a crystalline silicon semiconductor component having an insulating film 300 on its surface;
  • Step S05 Printing the crystalline silicon solar cell front conductive paste 400 (where 401 is metal powder, 402 is an organic carrier, and 403 is an oxide etchant) on the insulating film by printing. 300 surface;
  • Step S06 The crystalline silicon semiconductor device processed in the step S05 is sequentially dried, sintered, and cooled to obtain a crystalline silicon solar cell front electrode 700.
  • the drying temperature is 80 to 400 ° C
  • the sintering temperature is 700 to 820 ° C
  • the cooling condition is natural cooling.
  • the present invention still further provides a crystalline silicon solar cell using the front surface electrode of a crystalline silicon solar cell as described above.
  • a front side conductive paste of a crystalline silicon solar cell calculated based on a total weight of 100 parts, comprising components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; and 2.5 parts of an oxide etchant.
  • the oxide etchant is prepared by weighing the oxide etchant raw material according to the ratio described above and performing uniform mixing; and heating the uniformly mixed oxide etchant raw material into a heating furnace to 1000 ° C, and maintained at 1000 ° C for 120 min, to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into water at room temperature (25 ° C) to obtain oxide etchant particles; The oxide etchant particles are dried in a drying oven at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain an oxide etching having a particle size of 0.5 to 7.0 ⁇ m. The powder was then dried in a dry box at 100 ° C to obtain a dry oxide etchant powder.
  • the organic vehicle contains 70% of a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% Polyamide wax 5%.
  • the preparation method of the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for manufacturing a front electrode of a crystalline silicon solar cell comprising the following steps:
  • the front surface conductive paste of the crystalline silicon solar cell of Embodiment 1 is printed on the front surface of the crystalline silicon solar cell with the insulating film by screen printing, and the back surface of the solar cell is screen printed with back silver and back aluminum, and then Sintering was carried out at 770 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • a front side conductive paste of a crystalline silicon solar cell calculated based on a total weight of 100 parts, comprising components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; and 2.5 parts of an oxide etchant.
  • the oxide etchant is prepared by weighing the oxide etchant raw material according to the ratio described above and performing uniform mixing; and heating the uniformly mixed oxide etchant raw material into a heating furnace to 1000 ° C, and maintained at 1000 ° C for 120 min, to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into water at room temperature (25 ° C) to obtain oxide etchant particles; The oxide etchant particles are dried in a drying oven at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain an oxide etching having a particle size of 0.5 to 7.0 ⁇ m. The powder was then dried in a dry box at 100 ° C to obtain a dry oxide etchant powder.
  • the organic vehicle contains 70% of a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% Polyamide wax 5%.
  • the preparation method of the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for manufacturing a front electrode of a crystalline silicon solar cell comprising the following steps:
  • the front side conductive paste of the crystalline silicon solar cell of Embodiment 2 is printed on the front side of the crystalline silicon solar cell with the insulating film by screen printing, and the back side of the solar cell is screen printed with back silver and back aluminum, and then Sintering was carried out at 800 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • a front side conductive paste of a crystalline silicon solar cell calculated based on a total weight of 100 parts, comprising components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; and 2.5 parts of an oxide etchant.
  • the oxide etchant is prepared by weighing the oxide etchant raw material according to the ratio described above and performing uniform mixing; and heating the uniformly mixed oxide etchant raw material into a heating furnace to 1 000 ° C, and maintained at 1000 ° C for 120 min, to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into water at room temperature (25 ° C) to obtain oxide etchant particles
  • the oxide etchant particles are placed in a dry box and dried at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain an oxide oxide having a particle size of 0.5 to 7.0 ⁇ m.
  • the etchant powder was then dried in a dry box at 100 ° C to obtain a dried oxide etchant powder.
  • the organic vehicle contains 70% of a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% Polyamide wax 5%.
  • the preparation method of the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for manufacturing a front electrode of a crystalline silicon solar cell comprising the following steps:
  • the front side conductive paste of the crystalline silicon solar cell of Embodiment 3 is printed on the front surface of the crystalline silicon solar cell having the insulating film by screen printing, and the back surface of the solar cell is screen printed with back silver and back aluminum, and then Sintering was carried out at 780 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • a front side conductive paste of a crystalline silicon solar cell calculated based on a total weight of 100 parts, comprising components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; and 2.5 parts of an oxide etchant.
  • the oxide etchant is prepared by weighing the oxide etchant raw material according to the ratio described above and performing uniform mixing; and heating the uniformly mixed oxide etchant raw material into a heating furnace to 1000 ° C, and maintained at 1000 ° C for 120 min, to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into water at room temperature (25 ° C) to obtain oxide etchant particles; The oxide etchant particles are dried in a drying oven at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain an oxide etching having a particle size of 0.5 to 7.0 ⁇ m. The powder was then dried in a dry box at 100 ° C to obtain a dry oxide etchant powder.
  • the organic vehicle contains 70% of a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% Polyamide wax 5%.
  • the preparation method of the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for manufacturing a front electrode of a crystalline silicon solar cell comprising the following steps:
  • the front side conductive paste of the crystalline silicon solar cell of Example 4 was printed on the front side of the crystalline silicon solar cell with an insulating film by screen printing, and the back side of the solar cell was screen printed with back silver and back aluminum, and then Sintering was carried out at 780 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • a front side conductive paste of a crystalline silicon solar cell calculated based on a total weight of 100 parts, comprising components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; and 2.5 parts of an oxide etchant.
  • the oxide etchant is prepared by weighing the oxide etchant raw material according to the ratio described above and performing uniform mixing; and heating the uniformly mixed oxide etchant raw material into a heating furnace to 1000 ° C, and maintained at 1000 ° C for 120 min, to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into water at room temperature (25 ° C) to obtain oxide etchant particles; The oxide etchant particles are dried in a drying oven at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain an oxide etching having a particle size of 0.5 to 7.0 ⁇ m. The powder was then dried in a dry box at 100 ° C to obtain a dry oxide etchant powder.
  • the organic vehicle contains 70% of a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% Polyamide wax 5%.
  • the preparation method of the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for manufacturing a front electrode of a crystalline silicon solar cell comprising the following steps:
  • the front side conductive paste of the crystalline silicon solar cell in Embodiment 5 is printed on the front surface of the crystalline silicon solar cell having the insulating film by screen printing, and the back surface of the solar cell is screen printed with back silver and back aluminum, and then Sintering was carried out at 790 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • a front side conductive paste of a crystalline silicon solar cell calculated based on a total weight of 100 parts, comprising components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; and 2.5 parts of an oxide etchant.
  • the oxide etchant is prepared by weighing the oxide etchant raw material according to the ratio described above and performing uniform mixing; and heating the uniformly mixed oxide etchant raw material into a heating furnace to 1000 ° C, and maintained at 1000 ° C for 120 min, to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into water at room temperature (25 ° C) to obtain oxide etchant particles; The oxide etchant particles are dried in a drying oven at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain an oxide etching having a particle size of 0.5 to 7.0 ⁇ m. The powder was then dried in a dry box at 100 ° C to obtain a dry oxide etchant powder.
  • the organic vehicle contains 70% of a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% Polyamide wax 5%.
  • the preparation method of the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for manufacturing a front electrode of a crystalline silicon solar cell comprising the following steps:
  • the front side conductive paste of the crystalline silicon solar cell of Example 6 is printed on the front side of the crystalline silicon solar cell having the insulating film by screen printing, and the back side of the solar cell is screen printed with back silver and back aluminum, and then Sintering was carried out at 800 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • a front side conductive paste of a crystalline silicon solar cell calculated based on a total weight of 100 parts, comprising components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; and 2.5 parts of an oxide etchant.
  • Pb 3 O 4 13%, TeO 2 30%, Li 2 O 16%, SiO 2 12%, B 2 O 3 0.3%, Bi 2 O 3 5%, ZnO 15%, WO 3 5%, CuO 3.4%.
  • the oxide etchant is prepared by weighing the oxide etchant raw material according to the ratio described above and performing uniform mixing; and heating the uniformly mixed oxide etchant raw material into a heating furnace to 1000 ° C, and maintained at 1000 ° C for 120 min, to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into water at room temperature (25 ° C) to obtain oxide etchant particles; The oxide etchant particles are dried in a drying oven at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain an oxide etching having a particle size of 0.5 to 7.0 ⁇ m. The powder was then dried in a dry box at 100 ° C to obtain a dry oxide etchant powder.
  • the organic vehicle contains 70% of a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% Polyamide wax 5%.
  • the preparation method of the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for manufacturing a front electrode of a crystalline silicon solar cell comprising the following steps:
  • the front side conductive paste of the crystalline silicon solar cell in Embodiment 7 is printed on the front surface of the crystalline silicon solar cell having the insulating film by screen printing, and the back surface of the solar cell is screen printed with back silver and back aluminum, and then Sintering was carried out at 800 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • a front side conductive paste of a crystalline silicon solar cell calculated based on a total weight of 100 parts, comprising components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; and 2.5 parts of an oxide etchant.
  • the oxide etchant is prepared by weighing the oxide etchant raw material according to the ratio described above and performing uniform mixing; and heating the uniformly mixed oxide etchant raw material into a heating furnace to 1000 ° C, and maintained at 1000 ° C for 120 min, to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into water at room temperature (25 ° C) to obtain oxide etchant particles; The oxide etchant particles are dried in a drying oven at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain an oxide etching having a particle size of 0.5 to 7.0 ⁇ m. The powder was then dried in a dry box at 100 ° C to obtain a dried oxide etchant powder.
  • the organic vehicle contains 70% of a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% Polyamide wax 5%.
  • the preparation method of the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for manufacturing a front electrode of a crystalline silicon solar cell comprising the following steps:
  • the front side conductive paste of the crystalline silicon solar cell of Example 8 is printed on the front side of the crystalline silicon solar cell with an insulating film by screen printing, and the back side of the solar cell is screen printed with back silver and back aluminum, and then Sintering was carried out at 800 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • a front side conductive paste of a crystalline silicon solar cell calculated based on a total weight of 100 parts, comprising components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; and 2.5 parts of an oxide etchant.
  • the oxide etchant is prepared by weighing the oxide etchant raw material according to the ratio described above and performing uniform mixing; and heating the uniformly mixed oxide etchant raw material into a heating furnace to 1000 ° C, and maintained at 1000 ° C for 120 min, to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into water at room temperature (25 ° C) to obtain oxide etchant particles; The oxide etchant particles are dried in a drying oven at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain an oxide etching having a particle size of 0.5 to 7.0 ⁇ m. The powder was then dried in a dry box at 100 ° C to obtain a dry oxide etchant powder.
  • the organic vehicle contains 70% of a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% Polyamide wax 5%.
  • the preparation method of the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for manufacturing a front electrode of a crystalline silicon solar cell comprising the following steps:
  • the front side conductive paste of the crystalline silicon solar cell of Example 9 is printed on the front side of the crystalline silicon solar cell having the insulating film by screen printing, and the back side of the solar cell is screen printed with back silver and back aluminum, and then Sintering was carried out at 800 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • a front side conductive paste of a crystalline silicon solar cell calculated based on a total weight of 100 parts, comprising components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; and 2.5 parts of an oxide etchant.
  • the oxide etchant is prepared by weighing the oxide etchant raw material according to the ratio described above and performing uniform mixing; and heating the uniformly mixed oxide etchant raw material into a heating furnace to 1 000 ° C, and maintained at 1000 ° C for 120 min, to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into water at room temperature (25 ° C) to obtain oxide etchant particles
  • the oxide etchant particles are placed in a dry box and dried at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain an oxide oxide having a particle size of 0.5 to 7.0 ⁇ m.
  • the etchant powder was then dried in a dry box at 100 ° C to obtain a dried oxide etchant powder.
  • the organic vehicle contains 70% of a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% Polyamide wax 5%.
  • the preparation method of the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for manufacturing a front electrode of a crystalline silicon solar cell comprising the following steps:
  • the front side conductive paste of the crystalline silicon solar cell in Embodiment 10 is printed on the front surface of the crystalline silicon solar cell having the insulating film by screen printing, and the back surface of the solar cell is screen printed with back silver and back aluminum, and then Sintering was carried out at 800 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • a front side conductive paste of a crystalline silicon solar cell calculated based on a total weight of 100 parts, comprising components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; and 2.5 parts of an oxide etchant.
  • the oxide etchant is prepared by weighing the oxide etchant raw material according to the ratio described above and performing uniform mixing; and heating the uniformly mixed oxide etchant raw material into a heating furnace to 1000 ° C, and maintained at 1000 ° C for 120 min, to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into water at room temperature (25 ° C) to obtain oxide etchant particles; The oxide etchant particles are dried in a drying oven at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain an oxide etching having a particle size of 0.5 to 7.0 ⁇ m. The powder was then dried in a dry box at 100 ° C to obtain a dry oxide etchant powder.
  • the organic vehicle contains 70% of a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% Polyamide wax 5%.
  • the preparation method of the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for manufacturing a front electrode of a crystalline silicon solar cell comprising the following steps:
  • the front side conductive paste of the crystalline silicon solar cell in Example 11 was printed on the front side of the crystalline silicon solar cell having the insulating film by screen printing, and the back side of the solar cell was screen printed with back silver and back aluminum, and then Sintering was carried out at 800 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • a front side conductive paste of a crystalline silicon solar cell calculated based on a total weight of 100 parts, comprising components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; and 2.5 parts of an oxide etchant.
  • the oxide etchant is prepared by weighing the oxide etchant raw material according to the ratio described above and performing uniform mixing; and heating the uniformly mixed oxide etchant raw material into a heating furnace to 1000 ° C, and maintained at 1000 ° C for 120 min, to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into water at room temperature (25 ° C) to obtain oxide etchant particles; The oxide etchant particles are dried in a drying oven at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain an oxide etching having a particle size of 0.5 to 7.0 ⁇ m. The powder was then dried in a dry box at 100 ° C to obtain a dry oxide etchant powder.
  • the organic vehicle contains the following components in an amount of 100% by weight of the organic vehicle: 70% of a mixture of terpineol, dodecyl alcohol and decene; 10% of ethyl cellulose, 15% of rosin resin, and polyamide wax 5 %.
  • the preparation method of the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for manufacturing a front electrode of a crystalline silicon solar cell comprising the following steps:
  • the front side conductive paste of the crystalline silicon solar cell of Example 12 is printed on the front side of the crystalline silicon solar cell having the insulating film by screen printing, and the back side of the solar cell is screen printed with back silver and back aluminum, and then Sintering was carried out at 770 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • a front side conductive paste of a crystalline silicon solar cell calculated based on a total weight of 100 parts, comprising components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; and 2.5 parts of an oxide etchant.
  • the oxide etchant is prepared by weighing the oxide etchant raw material according to the ratio described above and performing uniform mixing; and heating the uniformly mixed oxide etchant raw material into a heating furnace to 1000 ° C, and maintained at 1000 ° C for 120 min, to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into water at room temperature (25 ° C) to obtain oxide etchant particles; The oxide etchant particles are dried in a drying oven at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain an oxide etching having a particle size of 0.5 to 7.0 ⁇ m. The powder was then dried in a dry box at 100 ° C to obtain a dry oxide etchant powder.
  • the organic vehicle contains 70% of a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% Polyamide wax 5%.
  • the preparation method of the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for manufacturing a front electrode of a crystalline silicon solar cell comprising the following steps:
  • the front side conductive paste of the crystalline silicon solar cell of Embodiment 13 is printed on the front surface of the crystalline silicon solar cell having the insulating film by screen printing, and the back surface of the solar cell is screen printed with back silver and back aluminum, and then Sintering was carried out at 800 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • a front side conductive paste of a crystalline silicon solar cell calculated based on a total weight of 100 parts, comprising components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; and 2.5 parts of an oxide etchant.
  • the oxide etchant is prepared by weighing the oxide etchant raw material according to the ratio described above and performing uniform mixing; and heating the uniformly mixed oxide etchant raw material into a heating furnace to 1000 ° C, and maintained at 1000 ° C for 120 min, to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into water at room temperature (25 ° C) to obtain oxide etchant particles; The oxide etchant particles are dried in a drying oven at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain an oxide etching having a particle size of 0.5 to 7.0 ⁇ m. The powder was then dried in a dry box at 100 ° C to obtain a dry oxide etchant powder.
  • the organic vehicle contains 70% of a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% a mixture of terpineol, dodecyl alcohol, and decene; ethyl cellulose 10%, rosin resin 15%, based on 100% by weight of the organic vehicle.
  • Polyamide wax 5% Polyamide wax 5%.
  • the preparation method of the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for manufacturing a front electrode of a crystalline silicon solar cell comprising the following steps:
  • the front side conductive paste of the crystalline silicon solar cell of Example 14 is printed on the front side of the crystalline silicon solar cell having the insulating film by screen printing, and the back side of the solar cell is screen printed with back silver and back aluminum, and then Sintering was carried out at 800 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • the efficiency of the obtained cell sheets was tested, and the I-V test results are summarized in Table 1.
  • a crystalline silicon solar cell front conductive paste PV1B screen widely used in the market is screen printed on the front surface of a crystalline silicon solar cell having the same insulating film as the embodiment, and the back surface of the solar cell is screen printed with back silver and The aluminum was backed and then sintered to 800 ° C for sintering to obtain the front electrode of the crystalline silicon solar cell, and then the efficiency of the cell was tested.
  • the IV test results are summarized in Table 1.
  • solder the strip to the main grid for 180 degree tensile test tensile force the main grid width is 0.7mm, and the 0.9mm wide strip is soldered to the main grid.
  • the strip width is 0.9mm and the thickness is 0.23mm. It is 96.5% Sn3.5% Ag.
  • 5 is a schematic diagram of a 180 degree tensile test, specifically, the solder ribbon 800 is first soldered to the surface of the main grid, and then the crystalline silicon cell sheet 100 is fixed to the stretching machine 900 by the first fixing bolt 901 and the second fixing bolt 902.
  • the tensile test is performed in the direction of the pulling force F.
  • the tensile test results are shown in Table 1.
  • the solar cell sheets of Examples 1-8 have the advantages of high conversion rate, low R s , and high tensile force as compared with the comparative examples, indicating that the oxide etchant used in Examples 1-8 is superior.
  • the etching performance not only effectively wets and sinters the silver powder, but also effectively etches away the insulating film on the surface of the solar cell sheet, so that the silver electrode and the surface of the solar cell sheet form a good ohmic contact, thereby converting the solar cell sheet.
  • High efficiency, low contact resistance R s and high tensile force are examples of the solar cell sheets of Examples 1-8 have the advantages of high conversion rate, low R s , and high tensile force as compared with the comparative examples, indicating that the oxide etchant used in Examples 1-8 is superior.
  • the etching performance not only effectively wets and sinters the silver powder, but also effectively etches away the insulating film on the surface of the solar cell sheet, so that the silver electrode
  • the weight ratio of CuO to Pb 3 O 4 in the oxide etching etchant used in Examples 1-8 is in the range of 0.1:24 to 10:6, and the weight ratio of CuO to Li 2 O is from 0.1:20 to 10:5.
  • the weight ratio of CuO to P 2 O 5 in the oxide etching etchant used in Example 1-2 is in the range of 0.1:10 to 10:0.1, and its unique oxide component ratio makes the oxide thereof
  • the etchant can dissolve enough silver during the sintering process, and can completely etch the insulating layer on the surface of the battery sheet without excessively etching the silicon cell sheet, so that the silver electrode and the silicon wafer not only form a good ohmic contact, but also have a very good Good adhesion.
  • the solar cell conversion rates of Examples 9-14 were lower than those of the comparative examples, and also lower than the cell sheet conversion rates of Examples 1-8, and the series resistance (R s ) was significantly higher than that of Examples 1-8. It is caused by the difference in the proportion of the oxide etchant used.
  • the low conversion rate of the cell sheets of Examples 9-10 is due to the low content of Pb 3 O 4 in the oxide etchant used and the high CuO content, indicating that CuO/Pb 3 O 4 is etched for the oxide of the present invention.
  • the performance of the agent has a great influence and the proper CuO/Pb 3 O 4 ratio must be maintained.
  • the efficiency of the cell sheets of Examples 11-12 was lower than that of the comparative cell, and also lower than the cell efficiency of Examples 1-8, due to the high content of Pb 3 O 4 in the oxide etchant used therein.
  • the weight content of Pb 3 O 4 in the oxide etchant of the invention is 6-24%, and if the weight content of Pb 3 O 4 is less than 6% or higher than 24%, the surface of the cell sheet during the sintering process may be insulated. The layer cannot be completely corroded or excessively corroded, so that the silver electrode does not form a good ohmic contact with the silicon wafer.
  • the efficiency of the cell sheets of Examples 13-14 was lower than that of the comparative cell, and also lower than the cell efficiency of Examples 1-8, which was caused by the high content of P 2 O 5 in the oxide etchant used.
  • the weight content of P 2 O 5 in the oxide etchant of the invention is from 0.1 to 10%.

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Photovoltaic Devices (AREA)
  • Conductive Materials (AREA)

Abstract

L'invention concerne une pâte conductrice côté avant d'une cellule solaire en silicium cristallin. La pâte conductrice côté avant d'une cellule solaire en silicium cristallin comprend les constituants suivants en parties en poids : de 80,0 à 93,0 parties d'une poudre métallique; de 6,0 à 15,0 parties d'un vecteur organique; et de 1,0 à 5,0 parties d'un agent de gravure d'oxyde; l'agent de gravure d'oxyde comprenant au moins du Pb3O4, du CuO et du Li2O, le rapport pondéral du CuO au Pb3O4 étant de 0,02 à 2,5, et le rapport pondéral du CuO au Li2O étant de 0,025 à 3. La pâte conductrice côté avant permet un bon contact ohmique formé entre la poudre métallique et le silicium au cours du processus de frittage, réduisant ainsi fortement la résistance pour obtenir une électrode finale côté avant ayant une faible résistance de contact, une bonne conductivité et une forte adhérence.
PCT/CN2018/081376 2018-03-30 2018-03-30 Pâte conductrice côté avant de cellule solaire en silicium cristallin, son procédé de préparation et cellule solaire WO2019183933A1 (fr)

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CN201880000363.1A CN110557965B (zh) 2018-03-30 2018-03-30 晶硅太阳能电池正面导电浆料及其制备方法和太阳能电池

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CN114038608B (zh) * 2021-12-24 2022-04-19 西安宏星电子浆料科技股份有限公司 一种低电阻率太阳能电池导电浆料

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CN104733073A (zh) * 2013-12-21 2015-06-24 株式会社则武 太阳能电池用导电性糊组合物及其制造方法
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