WO2019183930A1 - Bouillie conductrice avant de batterie solaire au silicium cristallin et son procédé de préparation et batterie solaire - Google Patents

Bouillie conductrice avant de batterie solaire au silicium cristallin et son procédé de préparation et batterie solaire Download PDF

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WO2019183930A1
WO2019183930A1 PCT/CN2018/081373 CN2018081373W WO2019183930A1 WO 2019183930 A1 WO2019183930 A1 WO 2019183930A1 CN 2018081373 W CN2018081373 W CN 2018081373W WO 2019183930 A1 WO2019183930 A1 WO 2019183930A1
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solar cell
crystalline silicon
silicon solar
oxide etchant
parts
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PCT/CN2018/081373
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English (en)
Chinese (zh)
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刘小丽
张�杰
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 CN201880000357.6A priority Critical patent/CN110603605A/zh
Priority to PCT/CN2018/081373 priority patent/WO2019183930A1/fr
Publication of WO2019183930A1 publication Critical patent/WO2019183930A1/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to the field of solar cell technologies, and in particular, to a front side conductive paste of a crystalline silicon solar cell, a preparation method thereof, and a solar cell. Background technique
  • 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.
  • 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 on the front side or the illuminated side of the crystalline silicon solar cell, such as silicon nitride, titanium oxide, aluminum oxide, silicon oxide, or oxidized osmium/oxidation. Titanium, the silver powder is brought into contact with the crystalline silicon solar cell substrate 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 front electrode formed on 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 can not effectively reduce the anti-reflection insulating layer on the surface of the battery sheet.
  • the etching is performed to cause an increase in the resistance value of the front electrode in contact with the surface of the silicon wafer, 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 battery.
  • a front side conductive paste of a crystalline silicon solar cell in terms of 100 parts by weight, including the following raw material components
  • organic carrier 6.0 ⁇ 15.0 parts
  • oxide etchant 1.0 ⁇ 5.0 parts
  • the oxide etchant contains at least PbO, W0 3 Li 2 0, and the molar ratio of the WO ⁇ RPbO is 0.5: 35 ⁇ 5: 20, the WO 3 and 1 ⁇ 2 0 The molar ratio is 0.5:20 ⁇ 5:9.
  • a method for preparing a front side conductive paste of a crystalline silicon solar cell comprises at least the following steps: [0014] Step S01: melting an oxide etchant raw material component to obtain an oxide etchant melt , the molten metal is quenched to obtain oxide etchant particles, and subjected to crushing treatment to obtain an oxide etchant powder having a particle diameter of 0.1 to 5. (V m ;
  • Step S02. The organic carrier raw material is placed in an environment of 40 to 100 ° C for mixing treatment to obtain an organic carrier; [0016] Step S03.
  • the metal powder and the oxide etchant powder obtained in step S01, step S02 The obtained organic vehicle was subjected to a compounding treatment to obtain a front side conductive paste of a crystalline silicon solar cell.
  • a method for fabricating a front surface electrode of a crystalline silicon solar cell includes at least the following steps:
  • the surface 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 electrode of the crystalline silicon solar cell.
  • the present invention provides a front side conductive paste of a crystalline silicon solar cell, wherein the oxide etchant contains components such as PbO, WO 3 and Li 2 0, and these components In a specific ratio, these specific proportions of the components can exhibit excellent etching properties, so that the oxide etchant can dissolve enough silver during the sintering process, and the oxide etchant liquid in which the silver is dissolved is partially used.
  • the metal powder is wetted and sintered, 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 the silver dissolved in the oxide etchant liquid is precipitated during the cooling process.
  • the formation of tiny nano-silver particles makes the metal powder form a good ohmic contact with silicon, greatly reducing the resistance of the front electrode, and finally obtaining a front electrode with low contact resistance, good electrical conductivity and strong adhesion.
  • 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 oxide etchant can dissolve enough silver 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 during cooling.
  • 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 present invention adopts the above-mentioned front electrode structure of the crystalline silicon solar cell, the solar cell structure exhibits good adhesion, and the silver electrode and the silicon wafer have good ohmic contact, so that the solar cell The conversion efficiency is improved.
  • FIG. 1 is a schematic view showing a process flow for preparing a conductive paste on a front side of a crystalline silicon solar cell according to the present invention
  • 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 view showing the present invention for printing a crystalline silicon semiconductor device having an insulating film on its surface. Schematic diagram of the front conductive paste;
  • FIG. 4 is a schematic view showing the sintering of a crystalline silicon semiconductor device having front and back pastes printed in FIG. 3 of the present invention
  • FIG. 5 is a schematic diagram of a 180 degree tensile test.
  • the present invention provides a front side conductive paste of a crystalline silicon solar cell, including 100 parts by weight, including the following raw material components:
  • organic carrier 6.0 ⁇ 15.0 parts
  • the oxide etchant contains at least PbO, WO 3 and Li 2 0, and the molar ratio of the WO 3 and PbO is 0.5:35 to 5:20, and the WO 3 and 1 ⁇ 2
  • the molar ratio of 0 is 0.5:20 to 5:9.
  • the oxide etchant comprises the following components in terms of a molar amount of the oxide etchant of 100%:
  • the oxide of the added element is 0 to 5.0%.
  • the oxide etchant contains PbO, WO 3 Li 2 0 components, and these components are present in a specific ratio, these specific proportions of components can Exhibiting excellent etching performance, when the oxide etchant is melted into a liquid during the sintering process so that the amount of silver dissolved therein is sufficiently large, a part of the oxide etchant liquid in which silver is dissolved is used for the metal The powder is wetted and the metal powder is sintered; the other part dissolves the silver oxide etchant liquid flowing to the surface of the solar cell and reacts with the anti-reflection layer, which can effectively etch the anti-reflection layer, and dissolve in the cooling process after sintering.
  • 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, reduces the electric resistance, and forms a front electrode with low contact resistance, good electrical conductivity and strong adhesion.
  • the added element in the oxide of the added element is titanium, smear, silver, chromium, bismuth, copper, bismuth, vanadium, sodium, ancestor, bismuth, bromine, cobalt, ruthenium, osmium, iridium, iron, One or two or more of ruthenium, manganese, tin, nickel, tin, arsenic, potassium, phosphorus, indium, gallium, antimony, and the like.
  • the oxide etchant includes not only an oxide formed by a chemical method and an oxide obtained after high-temperature treatment, but also a carbonate, a phosphate, a fluoride or the like containing a cation, for example.
  • the lithium oxide Li 2 0 may be substituted with Li 2 CO 3 .
  • the oxide etchant may be crystalline, amorphous or a mixture of amorphous and crystalline.
  • the metal powder is silver, gold, platinum, copper, iron, nickel, zinc, titanium, cobalt, chromium, smear, manganese,
  • At least one of I and ⁇ At least one of I and ⁇ .
  • the metal powder is at least one of silver-coated copper, iron, nickel, zinc, titanium, cobalt, chromium, titanium, and manganese, wherein the thickness of the silver coating layer is 10 ⁇ 50nm.
  • 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 5/95 ⁇ 95/5, non-silver coated metal powder is at least one of silver, gold, platinum, copper, iron, nickel, zinc, titanium, cobalt, chromium, smear, manganese, ffi, samarium
  • the silver-coated metal powder is at least one of copper, iron, nickel, zinc, titanium, cobalt, chromium, titanium, and manganese, and the silver coating layer has a thickness of 10 to 200 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, including the following components: 50 ⁇ 95 parts of organic solvent; 1 ⁇ 40 parts of polymer; 0.1 ⁇ 10 parts of wetting and dispersing agent; 1 ⁇ 20 parts of thixotropic agent.
  • the organic solvent is selected from the group consisting of terpineol, ethylene glycol butyl ether acetate, ethylene glycol ethyl ether acetate, decadiol ester, diethylene glycol butyl ether, triethylene glycol butyl ether, three At least one of high boiling solvents such as propylene glycol methyl ether and terpene.
  • 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, poly One or two or more kinds of ethylene glycol are mainly used to assist the dispersion of the inorganic powder in the 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.
  • the silver paste is sheared during the printing process, the consistency becomes small, and the screen printing is easy.
  • 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, and the other functional assistants are 0.1-20 parts by weight, selected from the group consisting of polymethylphenylsiloxane, polyphenylsiloxane, and adjacent Phthalate esters (such as diethyl phthalate, dibutyl phthalate, etc.), microcrystalline wax, polydimethylsiloxane, polyvinyl butyral (PVB), polyether One or more of an ester-modified organosiloxane and an alkyl-modified organosiloxane.
  • the other functional additives may be 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, 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 preparation step of the oxide etchant is as follows: Weighing the oxide according to the ratio of the raw materials as described above The raw materials are uniformly mixed; the uniformly mixed oxide etchant raw materials are placed in a heating furnace and heated to 900-1100 ° C, and kept at 900-1100 ° C for 60-180 min to obtain molten liquid oxidation. Etching agent; quenching the molten liquid oxide etchant to obtain oxide etchant particles; drying the oxide etchant particles at a temperature of 60 to 80 ° C; The dried oxide etchant particles are subjected to a crushing treatment to obtain an oxide etchant powder having a particle size of 0.5 to 5. (Vm, and then dried in an oven at 80 to 100 ° C to obtain a dried oxide. Corrosion powder.
  • the quenching method is that the molten liquid oxide etchant is poured into water at 5-25 ° C for cooling or cooled in flowing room temperature air, and the flowing cold air temperature is below 25 ° C and below. .
  • the above-mentioned crushing of the oxide etched particles may be carried out by ball milling using a ball mill, or other methods may be employed to make the particle size of the oxide etchant particles small.
  • 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. 100 ⁇ 1 60min, an organic carrier 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 ground to obtain a front side of the crystalline silicon solar cell. Electrode conductive paste.
  • 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, followed by grinding treatment to obtain a crystalline silicon solar cell.
  • the front electrode is conductive paste.
  • 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 to obtain a front side of the crystalline silicon solar cell. Electrode conductive paste.
  • each of the metal powder, the organic vehicle, and the oxide etchant are respectively in parts by weight.
  • the present invention also provides a method for fabricating a front electrode of a crystalline silicon solar cell.
  • the fabrication method relates to a crystalline silicon semiconductor device having an insulating film superposed on its surface, the structure of the crystalline silicon semiconductor device is as shown in FIG. 3, and 100 is a crystalline silicon cell having a first surface and a second surface. a P/N junction 200 and an insulating film 300 are sequentially stacked outwardly on the first surface, and a backside silver paste 500 and a back aluminum paste 600 are printed on the first surface, wherein the insulating film 300 may be a silicon nitride film, At least one of a titanium oxide film, 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 The crystalline silicon solar cell front conductive paste 400 according to any one of the above aspects is printed (wherein 401 is metal powder, 402 is an organic carrier, and 403 is an oxide etchant). Printed on the surface of the insulating film 300;
  • Step S06 The crystalline silicon semiconductor device processed in step S05 is sequentially dried, sintered, and cooled to obtain a front surface electrode 700 of a crystalline silicon solar cell.
  • 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 conductive paste of a front side of a crystalline silicon solar cell calculated based on 100 parts by weight, comprises the components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic carrier; 2.5 parts of an oxide etchant.
  • the total amount of the oxide etchant 100%, including the following components:
  • the method for preparing the oxide etchant is: weigh the oxide etchant raw material according to the ratio described above and perform uniform mixing; and put the uniformly mixed oxide etchant raw material into the heating
  • the furnace is heated to 1 000 ° C and held at 1000 ° C for 120 min to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into a normal temperature (25 ° C) water to obtain a cooling agent.
  • Oxide etchant particles; the oxide etchant particles are dried in a dry box at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain a particle size of 0.5 ⁇ 7.
  • Vm oxide etchant powder 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, decadiol, and decene; ethyl cellulose 10%, rosin resin 15%, 5% of polyamide wax.
  • the method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for fabricating a front electrode of a crystalline silicon solar cell includes 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 having the insulating film by screen printing, and the back surface of the solar cell is screen printed with back silver and back Aluminum was then sintered 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 on the basis of a total weight of 100 parts, comprising the components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; 2.5 parts of an oxide etchant.
  • the total amount of the oxide etchant is 100%, including the following components:
  • the method for preparing the oxide etchant is: weigh the oxide etchant raw material according to the ratio described above and perform uniform mixing; and put the uniformly mixed oxide etchant raw material into heating
  • the furnace is heated to 1 000 ° C and held at 1000 ° C for 120 min to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into a normal temperature (25 ° C) water to obtain a cooling agent.
  • Oxide etchant particles; the oxide etchant particles are dried in a dry box at 80 ° C; the dried oxide etchant particles are The granules were placed in a ball mill for grinding to obtain an oxide etchant powder having a particle size of 0.5 to 7. (Vm, and then dried in a drying oven at 100 ° C to obtain a dried 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, decadiol, and decene; ethylcellulose 10%, rosin resin 15%, 5% of polyamide wax.
  • the method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for fabricating a front electrode of a crystalline silicon solar cell comprising the steps of:
  • the front surface conductive paste of the crystalline silicon solar cell of Embodiment 2 is printed on the front surface of the crystalline silicon solar cell with an insulating film by screen printing, and the back surface of the solar cell is screen printed with back silver and back Aluminum was then sintered 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 100 parts by weight, comprises the following composition ratio components: silver powder 88.5 parts; organic carrier 9.0 parts; oxide etchant 2.5 parts.
  • the total amount of the oxide etchant is 100%, including the following components:
  • the method for preparing the oxide etchant is: weigh the oxide etchant raw material according to the ratio described above and perform uniform mixing; and put the uniformly mixed oxide etchant raw material into heating
  • the furnace is heated to 1 000 ° C and held at 1000 ° C for 120 min to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into a normal temperature (25 ° C) water to obtain a cooling agent.
  • Oxide etchant particles; the oxide etchant particles are dried in a dry box at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain a particle size of 0.5 ⁇ 7.
  • Vm oxide etchant powder 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, decadiol, and decene; ethylcellulose 10%, rosin resin 15%, 5% of polyamide wax.
  • the method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for fabricating a front electrode of a crystalline silicon solar cell comprising the steps of:
  • the front side conductive paste of the crystalline silicon solar cell in 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 the back silver and the back.
  • Aluminum was then sintered 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 100 parts by total weight, comprising the components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; 2.5 parts of an oxide etchant.
  • the total amount of the oxide etchant is 100%, including the following components:
  • the method for preparing the oxide etchant is: weigh the oxide etchant raw material according to the ratio described above and perform uniform mixing; and put the uniformly mixed oxide etchant raw material into heating
  • the furnace is heated to 1 000 ° C and held at 1000 ° C for 120 min to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into a normal temperature (25 ° C) water to obtain a cooling agent.
  • Oxide etchant particles; the oxide etchant particles are dried in a dry box at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain a particle size of 0.5 ⁇ 7.
  • Vm oxide etchant powder 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, decadiol, and decene; ethylcellulose 10%, rosin resin 15%, 5% of polyamide wax.
  • the method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for fabricating a front electrode of a crystalline silicon solar cell comprising the steps of:
  • the front surface conductive paste of the crystalline silicon solar cell of Embodiment 4 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 was then sintered 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 100 parts by total weight, comprising the components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; 2.5 parts of an oxide etchant.
  • the total amount of the oxide etchant is 100%, including the following components:
  • the method for preparing the oxide etchant is: weigh the oxide etchant raw material according to the ratio described above and perform uniform mixing; and put the uniformly mixed oxide etchant raw material into the heating
  • the furnace is heated to 1 000 ° C and held at 1000 ° C for 120 min to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into a normal temperature (25 ° C) water to obtain a cooling agent.
  • Oxide etchant particles; the oxide etchant particles are dried in a dry box at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain a particle size of 0.5 ⁇ 7.
  • Vm oxide etchant powder 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, decadiol, and decene; ethyl cellulose 10%, rosin resin 15%, 5% of polyamide wax.
  • the method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for fabricating a front electrode of a crystalline silicon solar cell comprising the steps of:
  • 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 was then sintered at 790 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • the efficiency of the obtained cell sheets was tested, and the IV test results are summarized in Table 1.
  • a front side conductive paste of a crystalline silicon solar cell calculated on the basis of a total weight of 100 parts, comprising the components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; 2.5 parts of an oxide etchant.
  • the total amount of the oxide etchant is 100%, including the following components:
  • the method for preparing the oxide etchant is: weigh the oxide etchant raw material according to the ratio described above and perform uniform mixing; and put the uniformly mixed oxide etchant raw material into heating
  • the furnace is heated to 1 000 ° C and held at 1000 ° C for 120 min to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into a normal temperature (25 ° C) water to obtain a cooling agent.
  • Oxide etchant particles; the oxide etchant particles are dried in a dry box at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain a particle size of 0.5 ⁇ 7.
  • Vm oxide etchant powder 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, decadiol, and decene; ethylcellulose 10%, rosin resin 15%, 5% of polyamide wax.
  • the method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for fabricating a front electrode of a crystalline silicon solar cell comprising the steps of:
  • the front side conductive paste of the crystalline silicon solar cell in Example 6 was printed on the front side of the crystalline silicon solar cell having the insulating film by screen printing, and the back surface of the solar cell was screen printed with the back silver and the back. Aluminum was then sintered 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 according to the total weight of 100 parts, comprising the following composition ratio components: 88.5 parts of silver powder; 9.0 parts of organic vehicle; 2.5 parts of an oxide etchant. [0149] wherein, the total amount of the oxide etchant is 100%, including the following components:
  • the oxide etchant is prepared by: weighing an oxide etchant raw material according to the ratio described above and performing uniform mixing; and placing the uniformly mixed oxide etchant raw material into heating The furnace is heated to 1 000 ° C and held at 1000 ° C for 120 min to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into a normal temperature (25 ° C) water to obtain a cooling agent.
  • Oxide etchant particles; the oxide etchant particles are dried in a dry box at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain a particle size of 0.5 ⁇ 7. (Vm oxide etchant powder, 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, decadiol, and decene; ethylcellulose 10%, rosin resin 15%, 5% of polyamide wax.
  • the method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for fabricating a front electrode of a crystalline silicon solar cell comprising the steps of:
  • 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 was then sintered 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 100 parts by total weight, comprising the components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; 2.5 parts of an oxide etchant.
  • the total amount of the oxide etchant is 100%, including the following components:
  • the method for preparing the oxide etchant is: weigh the oxide etchant raw material according to the ratio described above And uniformly mixing; the uniformly mixed oxide etchant raw material is heated to 1 000 ° C in a heating furnace, and is kept 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 and ground to obtain an oxide etchant powder having a particle size of 0.5 to 7. (Vm is then placed in a dry box and dried at 100 ° C to obtain 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, decadiol, and decene; ethylcellulose 10%, rosin resin 15%, 5% of polyamide wax.
  • the method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for fabricating a front electrode of a crystalline silicon solar cell comprising the steps of:
  • the front surface conductive paste of the crystalline silicon solar cell of Example 8 was printed on the front side of the crystalline silicon solar cell with an insulating film by screen printing, and the back surface of the solar cell was screen printed with back silver and back Aluminum was then sintered 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 100 parts by total weight, comprising the components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic carrier; 2.5 parts of an oxide etchant.
  • the total amount of the oxide etchant is 100%, including the following components:
  • the oxide etchant is prepared by: weighing an oxide etchant raw material according to the ratio described above and performing uniform mixing; and placing the uniformly mixed oxide etchant raw material into heating The furnace is heated to 1 000 ° C and held at 1000 ° C for 120 min to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into a normal temperature (25 ° C) water to obtain a cooling agent.
  • Oxide etchant particles; the oxide etchant particles are dried in a dry box at 80 ° C; the dried oxide etchant particles are The granules were placed in a ball mill for grinding to obtain an oxide etchant powder having a particle size of 0.5 to 7. (Vm, and then dried in a drying oven at 100 ° C to obtain a dried 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, decadiol, and decene; ethylcellulose 10%, rosin resin 15%, 5% of polyamide wax.
  • the method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for fabricating a front electrode of a crystalline silicon solar cell comprising the steps of:
  • the front surface conductive paste of the crystalline silicon solar cell of Example 9 was printed on the front side of the crystalline silicon solar cell with an insulating film by screen printing, and the back surface of the solar cell was screen printed with back silver and back Aluminum was then sintered 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 on the basis of a total weight of 100 parts, comprises the following composition ratio components: silver powder 88.5 parts; organic carrier 9.0 parts; oxide etchant 2.5 parts.
  • the total amount of the oxide etchant is 100%, and the following components are included:
  • the method for preparing the oxide etchant is: weigh the oxide etchant raw material according to the ratio described above and perform uniform mixing; and put the uniformly mixed oxide etchant raw material into the heating
  • the furnace is heated to 1 000 ° C and held at 1000 ° C for 120 min to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into a normal temperature (25 ° C) water to obtain a cooling agent.
  • Oxide etchant particles; the oxide etchant particles are dried in a dry box at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain a particle size of 0.5 ⁇ 7.
  • Vm oxide etchant powder 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, decadiol, and decene; ethylcellulose 10%, rosin resin 15%, 5% of polyamide wax.
  • the method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for fabricating a front electrode of a crystalline silicon solar cell comprising the steps of:
  • the front surface conductive paste of the crystalline silicon solar cell in Example 10 was printed on the front side of a crystalline silicon solar cell having an insulating film by screen printing, and the back surface of the solar cell was screen printed with back silver and back. Aluminum was then sintered 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 on the basis of a total weight of 100 parts, comprising the components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; 2.5 parts of an oxide etchant.
  • the total amount of the oxide etchant 100%, and the following components are included:
  • the method for preparing the oxide etchant is: weigh the oxide etchant raw material according to the ratio described above and perform uniform mixing; and put the uniformly mixed oxide etchant raw material into heating
  • the furnace is heated to 1 000 ° C and held at 1000 ° C for 120 min to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into a normal temperature (25 ° C) water to obtain a cooling agent.
  • Oxide etchant particles; the oxide etchant particles are dried in a dry box at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain a particle size of 0.5 ⁇ 7.
  • Vm oxide etchant powder 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, decadiol, and decene; ethylcellulose 10%, rosin resin 15%, 5% of polyamide wax.
  • the method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for fabricating a front electrode of a crystalline silicon solar cell comprising the steps of:
  • the front side conductive paste of the crystalline silicon solar cell in Embodiment 11 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 was then sintered at 800 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • a conductive wafer of a front side of a crystalline silicon solar cell calculated on the basis of a total weight of 100 parts, comprises the components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; 2.5 parts of an oxide etchant.
  • the total amount of the oxide etchant is 100%, including the following components:
  • the method for preparing the oxide etchant is: weigh the oxide etchant raw material according to the ratio described above and perform uniform mixing; and put the uniformly mixed oxide etchant raw material into heating
  • the furnace is heated to 1 000 ° C and held at 1000 ° C for 120 min to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into a normal temperature (25 ° C) water to obtain a cooling agent.
  • Oxide etchant particles; the oxide etchant particles are dried in a dry box at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain a particle size of 0.5 ⁇ 7.
  • Vm oxide etchant powder 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, decadiol, and decene; ethyl cellulose 10%, rosin resin 15%, poly The amide wax is 5%.
  • the method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for fabricating a front electrode of a crystalline silicon solar cell comprising the steps of:
  • the front surface 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 surface of the solar cell is screen printed with back silver and back Aluminum was then sintered at 770 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • the efficiency of the obtained cell sheets was tested, and the IV test results are summarized in Table 1.
  • a front side conductive paste of a crystalline silicon solar cell calculated according to the total weight of 100 parts, comprising the components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic carrier; 2.5 parts of an oxide etchant.
  • the total amount of the oxide etchant is 100%, including the following components:
  • the method for preparing the oxide etchant is: weigh the oxide etchant raw material according to the ratio described above and perform uniform mixing; and put the uniformly mixed oxide etchant raw material into heating
  • the furnace is heated to 1 000 ° C and held at 1000 ° C for 120 min to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into a normal temperature (25 ° C) water to obtain a cooling agent.
  • Oxide etchant particles; the oxide etchant particles are dried in a dry box at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain a particle size of 0.5 ⁇ 7.
  • Vm oxide etchant powder 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, decadiol, and decene; ethylcellulose 10%, rosin resin 15%, 5% of polyamide wax.
  • the method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for fabricating a front electrode of a crystalline silicon solar cell comprising the steps of:
  • the front surface conductive paste of the crystalline silicon solar cell in Example 13 was printed on the front side of the crystalline silicon solar cell having the insulating film by screen printing, and the back surface of the solar cell was screen printed with back silver and back Aluminum was then sintered 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 according to the total weight of 100 parts, comprising the components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic vehicle; 2.5 parts of an oxide etchant. [0226] wherein, the total amount of the oxide etchant is 100%, including the following components:
  • PbO 10%, TeO 2 30%, Li 2 0 6%, Si0 2 33%, B 2 0 3 2%, Bi 2 0 3 4%, ZnO 2%, WO 3 13%.
  • the oxide etchant is prepared by: weighing the oxide etchant raw material according to the ratio described above and performing uniform mixing; and placing the uniformly mixed oxide etchant raw material into the heating
  • the furnace is heated to 1 000 ° C and held at 1000 ° C for 120 min to obtain a molten liquid oxide etchant; the molten liquid oxide etchant is poured into a normal temperature (25 ° C) water to obtain a cooling agent.
  • Oxide etchant particles; the oxide etchant particles are dried in a dry box at 80 ° C; the dried oxide etchant particles are placed in a ball mill for grinding to obtain a particle size of 0.5 ⁇ 7.
  • Vm oxide etchant powder 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, decadiol, and decene; ethyl cellulose 10%, rosin resin 15%, 5% of polyamide wax.
  • the method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for fabricating a front electrode of a crystalline silicon solar cell comprising the steps of:
  • the front surface conductive paste of the crystalline silicon solar cell of Example 14 was printed on the front side of a crystalline silicon solar cell having an insulating film by screen printing, and the back surface of the solar cell was screen printed with back silver and back Aluminum was then sintered at 800 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • the efficiency of the obtained battery sheets was tested, and the I-V test results are summarized in Table 1.
  • a front side conductive paste of a crystalline silicon solar cell calculated on the basis of a total weight of 100 parts, comprising the components of the following formulation ratio: 88.5 parts of silver powder; 9.0 parts of organic carrier; 2.5 parts of an oxide etchant.
  • the total amount of the oxide etchant is 100%, including the following components:
  • the preparation method of the oxide etchant is: weigh the oxide etchant raw material according to the ratio described above And uniformly mixing; the uniformly mixed oxide etchant raw material is heated to 1 000 ° C in a heating furnace, and is kept 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 and ground to obtain an oxide etchant powder having a particle size of 0.5 to 7. (Vm is then dried in a dry box at 100 ° C to obtain a dry oxidation. 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, decadiol, and decene; ethylcellulose 10%, rosin resin 15%, 5% of polyamide wax.
  • the method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
  • a method for fabricating a front electrode of a crystalline silicon solar cell comprising the steps of:
  • the front surface conductive paste of the crystalline silicon solar cell of Example 15 was printed on the front side of the crystalline silicon solar cell having the insulating film by screen printing, and the back surface of the solar cell was screen printed with back silver and back Aluminum was then sintered at 800 ° C to obtain the front electrode of the crystalline silicon solar cell.
  • the efficiency of the obtained battery sheets was tested, and the I-V test results are summarized in Table 1.
  • a crystalline silicon solar cell front conductive paste PVM1B widely used on the market is screen-printed on the front side of a crystalline silicon solar cell having an insulating film identical to that of the embodiment, and the back surface of the solar cell is screen-printed.
  • the back silver and the back aluminum were then sintered by heating to 800 ° C 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.
  • the solder ribbon is soldered to the main grid for 180 degree tensile test tensile force, the main grid width is 0.7 mm, and the 0.9 mm wide soldering is performed.
  • the strip is soldered to the main grid, the strip width is 0.9 mm, the thickness is 0.23 mm, and the strip material is 96.5% Sn 3.5% 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 to 8 have the advantages of high conversion rate, high R JS , and high tensile force as compared with the comparative examples, indicating that the oxide etchant used in Examples 1 to 8 has Excellent etch performance, which 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 making the solar cell sheet It has the characteristics of high conversion efficiency, low contact electric ER S and high pulling force.
  • the molar ratio of W0 3 and PbO in the oxide etching etchant used in Examples 1-8 is in the range of 0.5:35 to 5:20, and the molar ratio of WO 3 and Li 2 0 is 0.5:20 to 5 : 9.
  • its unique proportion of oxide component enables its oxide etchant to dissolve enough silver during the sintering process, which can fully etch the insulating layer on the surface of the cell without excessively etching the silicon cell, making silver
  • the electrodes and the silicon wafer not only form a good ohmic contact, but also have good adhesion.
  • the conversion rate of the solar cell of Examples 9-15 was lower than that of the comparative example, and also lower than the cell conversion rate of Examples 1-8, and the series resistance (R S )W thereof was significantly higher than that of Examples 1-8. This is due to the different proportions of the oxide etchant components used.
  • the low conversion rate of the cell of Example 9 is due to the fact that the oxide etchant used does not contain B 2 O 3 because the other components are the same as in Example 8, showing that B 2 0 3 is an oxide etchant according to the present invention.
  • the performance has a large impact and the appropriate B 2 0 3 ratio must be maintained.
  • Example 10 conversion rate is due to the oxide etchant of Bi 2 0 3 content is too high, the oxide etchant according to the present invention, the molar ratio of Bi 2 0 3 content should be maintained at 10% or less, Excessive Bi 2 0 3 causes the cell sheet to be excessively corroded during sintering, resulting in a decrease in cell efficiency.
  • the efficiency of the cell sheets of Examples 11-15 was lower than that of the comparative cell sheet, and also lower than that of the embodiment 1-8, because the oxide etchant used therein contained ⁇ 0 3
  • the molar ratio of PbO in the oxide etchant of the present invention is too low (molar ratio 6-20%) and PbO (molar ratio 8-17%) is too low, which is lower than 20-35%, lower than 20% will cause the insulating layer on the surface of the cell sheet to be completely corroded during sintering, and the silver electrode cannot form a good ohmic contact with the silicon wafer;
  • the molar ratio of WO 3 in the oxide etchant of the present invention is less than 5%. If the molar ratio of WO 3 is more than 5%, the sintering performance is lowered.

Abstract

L'invention concerne une bouillie conductrice avant de batterie solaire en silicium cristallin. La bouillie conductrice avant de batterie solaire en silicium cristallin comprend les composants de matière première 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 support organique ; et de 1,0 à 5,0 parties d'un agent de gravure d'oxyde, l'agent de gravure d'oxyde contenant au moins PbO, WO3 et Li2O, et le rapport molaire du WO3 à PbO étant de 0,5 : 35 à 5 : 20, et le rapport molaire du WO3 à Li2O étant 0,5 : 20 à 5 : 9. La bouillie conductrice avant peut amener la poudre métallique et le silicium à former un bon contact ohmique dans un procédé de frittage, ce qui réduit considérablement la résistance, obtenant finalement une électrode avant ayant une faible résistance de contact, une bonne performance de conductivité et une force adhésive forte.
PCT/CN2018/081373 2018-03-30 2018-03-30 Bouillie conductrice avant de batterie solaire au silicium cristallin et son procédé de préparation et batterie solaire WO2019183930A1 (fr)

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PCT/CN2018/081373 WO2019183930A1 (fr) 2018-03-30 2018-03-30 Bouillie conductrice avant de batterie solaire au silicium cristallin et son procédé de préparation et batterie solaire

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CN103545016A (zh) * 2013-10-21 2014-01-29 深圳首创光伏有限公司 晶体硅太阳能电池正面电极导电浆料及其制备方法
CN105489710A (zh) * 2016-01-22 2016-04-13 四川银河星源科技有限公司 一种全背电极太阳能电池的生产工艺
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CN106477897A (zh) * 2016-09-20 2017-03-08 康准电子科技（昆山）有限公司 玻璃粉及应用该玻璃粉制得的正电极银浆、太阳能电池

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CN107004457A (zh) * 2014-11-27 2017-08-01 株式会社则武 导电性组合物
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