WO2019183930A1 - Crystalline silicon solar battery front conductive slurry and preparation method therefor and solar battery - Google Patents
Crystalline silicon solar battery front conductive slurry and preparation method therefor and solar battery Download PDFInfo
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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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- Prior art keywords
- solar cell
- crystalline silicon
- silicon solar
- oxide etchant
- parts
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- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 125000005498 phthalate group Chemical group 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229910001923 silver oxide Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
Disclosed is a crystalline silicon solar battery front conductive slurry. The crystalline silicon solar battery front conductive slurry comprises the following raw material components in parts by weight: 80.0-93.0 parts of a metal powder; 6.0-15.0 parts of an organic carrier; and 1.0-5.0 parts of an oxide etching agent, wherein, the oxide etching agent at least contains PbO, WO3 and Li2O, and the molar ratio of the WO3 to PbO is 0.5 : 35 to 5 : 20, and the molar ratio of the WO3 to Li2O is 0.5 : 20 to 5 : 9. The front conductive slurry can make the metal powder and silicon form a good ohmic contact in a sintering process, which greatly reduces the resistance, finally obtaining a front electrode with a low contact resistance, good conductivity performance and a strong adhesive force.
Description
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 Crystalline solar cell front conductive paste, preparation method thereof and solar cell
技术领域 Technical field
[0001] 本发明属于太阳能电池技术领域， 特别涉及一种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。 背景技术 [0001] 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
[0002] 太阳能是一种取之不尽， 用之不竭的清洁型能源。 随着煤炭、 石油等不可再生 能源的日益枯竭， 开发并利用太阳能成为大热点。 基于这种思路开发的太阳能 电池就是利用太阳能的一种重要手段。 目前， 实现产业化的晶硅太阳能电池已 经成为太阳能电池应用的典范。 [0002] 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.
[0003] 电池片作为晶硅太阳能电池的核心的组成部分， 为了将光照下产生的电流收集 并导出， 需要在电池片的正面及背面上分别制作一个电极。 制造电极的方法多 种多样， 其中丝网印刷及共烧是目前最为普遍的一种生产工艺。 如正面电极的 制造中， 采用丝网印刷的方式将导电浆料涂覆于硅片上， 并通过烧结在硅片正 面上形成正面电极。 烧结后的晶硅太阳能电池正面电极需要在硅片上附着牢固 ， 栅线窄而高， 遮光面积小， 易于焊接， 硅太阳能电池正面电极用导电浆料要 具备在烧结过程中穿透氮化硅减反射膜的能力， 与硅电池片形成良好的欧姆接 触。 [0003] As a component of the core of a crystalline silicon solar cell, in order to collect and derive the current generated by illumination, it is necessary to fabricate one electrode on the front and back sides of the cell sheet. There are many methods for manufacturing electrodes, and screen printing and co-firing are currently the most common production processes. In the manufacture of the front electrode, 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. The ability of the anti-reflective film to form a good ohmic contact with the silicon cell.
[0004] 常见的晶硅太阳能电池正面导电浆料含有银粉、 玻璃粉、 有机载体， 导电浆料 经过烧结形成正面电极。 在烧结过程中， 导电浆料中的氧化物刻蚀剂蚀刻并穿 透晶硅太阳能电池正面或光照面的减反射绝缘层如氮化硅、 氧化钛、 氧化铝、 氧化硅或氧化桂 /氧化钛， 使银粉与晶硅太阳能电池基体接触， 形成正面电极。 随着太阳能电池方阻的提升， 传统的正面导电浆料以及使用的玻璃粉不能很好 的刻蚀电池片表面的减反射绝缘层， 其形成的正面电极与硅片表面接触电阻高 ， 从而影响了电池片的光电转化效率。 发明概述
技术问题 [0004] 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. During the sintering process, 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. With the increase of the square resistance of the solar cell, 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. Summary of invention technical problem
[0005] 本发明所要解决的技术问题是： 提供一种晶硅太阳能电池正面导电浆料及其制 备方法， 以解决现有正面导电浆料存在的不能有效的对电池片表面的减反射绝 缘层进行刻蚀， 从而导致正面电极与硅片表面接触的电阻值升高， 最终使得电 池片光电转化效率降低等问题。 [0005] 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.
[0006] 进一步地， 本发明还提供一种晶硅太阳能电池正面电极的制作方法及太阳能电 池。 Further, the present invention also provides a method for fabricating a front electrode of a crystalline silicon solar cell and a solar battery.
问题的解决方案 Problem solution
技术解决方案 Technical solution
[0007] 为了实现上述发明目的， 本发明采用的技术方案如下： [0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows:
[0008] 一种晶硅太阳能电池正面导电浆料， 按照重量份为 100计， 包括以下原料组分 [0008] A front side conductive paste of a crystalline silicon solar cell, in terms of 100 parts by weight, including the following raw material components
[0009] 金属粉 80.0~93.0份； [0009] metal powder 80.0~93.0 parts;
[0010] 有机载体 6.0~15.0份； [0010] organic carrier 6.0~15.0 parts;
[0011] 氧化物刻蚀剂 1.0~5.0份； [0011] oxide etchant 1.0~5.0 parts;
[0012] 其中， 所述氧化物刻蚀剂至少含有 PbO、 W0 3 Li 20， 且所述 WO ^RPbO的摩 尔比例为 0.5:35~5:20， 所述 WO 3和1^ 20的摩尔比例为 0.5:20~5:9。 [0012] wherein, 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.
[0013] 相应地， 一种晶硅太阳能电池正面导电浆料的制备方法， 至少包括以下步骤： [0014] 步骤 S01.将氧化物刻蚀剂原料组分进行熔融得到氧化物刻蚀剂熔液， 对所述熔 液进行骤冷处理， 得到氧化物刻蚀剂颗粒， 并经过破碎处理获得粒径在 0.1~5.(V m的氧化物刻蚀剂粉末； [0013] Correspondingly, 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 ;
[0015] 步骤 S02.将有机载体原料置于 40~100°C环境中进行混合处理， 得到有机载体； [0016] 步骤 S03.将金属粉与步骤 S01得到的氧化物刻蚀剂粉末、 步骤 S02得到的有机载 体三者进行混料处理， 获得晶硅太阳能电池正面导电浆料。 [0015] 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.
[0017] 相应地， 一种晶硅太阳能电池正面电极的制作方法， 至少包括以下步骤： [0017] Correspondingly, a method for fabricating a front surface electrode of a crystalline silicon solar cell includes at least the following steps:
[0018] 提供表面叠设有绝缘膜的晶体硅半导体元件； [0018] providing a crystalline silicon semiconductor component having an insulating film on its surface;
[0019] 通过印制的方式将如上所述的晶硅太阳能电池正面导电浆料印制于所述绝缘膜 表面， 随后依次进行干燥、 烧结、 冷却处理， 得到晶硅太阳能电池正面电极。
[0020] 以及， 一种晶硅太阳能电池， 所述晶硅太阳能电池采用如上所述的晶硅太阳能 电池正面电极。 [0019] 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. [0020] Also, a crystalline silicon solar cell using the front surface electrode of the crystalline silicon solar cell as described above.
发明的有益效果 Advantageous effects of the invention
有益效果 Beneficial effect
[0021] 相对于现有技术， 本发明提供的晶硅太阳能电池正面导电浆料， 由于氧化物刻 蚀剂中含有 PbO、 WO 3及 Li 20这几种组分， 并且这几种组分以特定比例存在， 这些特定比例的组分能表现出优异的刻蚀性能， 使得氧化物刻蚀剂在烧结过程 中能够溶解足够的银， 溶解了银的所述氧化物刻蚀剂液体一部分用于润湿金属 粉并促使其烧结， 另一部分则流动至太阳能电池表面与减反射层反应， 能够有 效的刻蚀减反射层， 在冷却过程中， 溶解在氧化物刻蚀剂液体中的银析出形成 微小的纳米银颗粒， 使金属粉与硅形成良好的欧姆接触， 极大的降低正面电极 的电阻， 最终获得接触电阻低， 导电性能好， 附着力强的正面电极。 [0021] Compared with the prior art, 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.
[0022] 本发明提供的晶硅太阳能电池正面导电浆料的制备方法， 工艺条件简单， 获得 的正面导电浆料组分均匀且性能良好， 适于工业大规模生产。 [0022] 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.
[0023] 本发明提供的晶硅太阳能电池正面电极的制作方法， 由于采用了上述提供的晶 硅太阳能电池正面导电浆料， 氧化物刻蚀剂在烧结过程中能够溶解足够的银， 溶解了银的所述氧化物刻蚀剂液体一部分用于润湿金属粉并促使其烧结， 另一 部分则流动至太阳能电池表面与减反射层反应， 能够有效的刻蚀减反射层， 在 冷却过程中， 溶解在氧化物刻蚀剂液体中的银析出形成微小的纳米银颗粒， 使 金属粉与硅形成良好的欧姆接触， 极大的降低正面电极的电阻， 最终获得接触 电阻低， 导电性能好， 附着力强的正面电极。 [0023] The method for fabricating the front electrode of the crystalline silicon solar cell provided by the present invention, because the front side conductive paste of the crystalline silicon solar cell provided by the above is used, 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.
[0024] 本发明提供的晶硅太阳能电池， 由于采用了上述的晶硅太阳能电池正面电极结 构， 太阳能电池结构表现出良好的附着力， 同时银电极和硅片具有良好的欧姆 接触， 使得太阳能电池的转换效率得到提高。 [0024] 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.
对附图的简要说明 Brief description of the drawing
附图说明 DRAWINGS
[0025] 图 1为本发明提供的晶硅太阳能电池正面导电浆料的制备方法工艺流程示意图
[0026] 图 2为本发明提供的晶硅太阳能电池正面电极的制作方法工艺流程示意图； [0027] 图 3为本发明提供的在表面具有绝缘膜的晶体硅半导体元件上印刷了本发明所 述的正面导电浆料的示意图； 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; [0027] 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;
[0028] 图 4为本发明图 3中印刷了正面和背面浆料的晶体硅半导体元件烧结后的示意图 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;
[0029] 图 5为 180度拉伸测试示意图。 [0029] FIG. 5 is a schematic diagram of a 180 degree tensile test.
[0030] 其中， 100-晶体硅电池片； 200-P/N结； 300 -绝缘膜； 400-印刷的正面导电浆料 ， 401 -金属粉， 402 -有机载体， 403 -氧化物刻蚀剂； 500 -印刷的背面银浆； 600- 印刷的背面铝浆； 700 -正面电极； 800-焊带； 900 -拉伸机； 901 -拉伸机样品第一 固定螺栓； 902 -拉伸机样品第二固定螺栓； F-拉力方向。 [0030] wherein, 100-crystalline silicon cell sheet; 200-P/N junction; 300-insulating film; 400-printed front conductive paste, 401-metal powder, 402-organic carrier, 403-oxide etchant 500 - printed back silver paste; 600-printed back aluminum paste; 700 - front electrode; 800-welded strip; 900 - stretcher; 901 - stretcher sample first fixing bolt; 902 - stretcher sample Second fixing bolt; F-pull direction.
发明实施例 Invention embodiment
本发明的实施方式 Embodiments of the invention
[0031] 为了使本发明要解决的技术问题、 技术方案及有益效果更加清楚明白， 以下结 合实施例和附图， 对本发明进行进一步详细说明。 应当理解， 此处所描述的具 体实施例仅仅用以解释本发明， 并不用于限定本发明。 [0031] In order to make the technical problems, technical solutions, and advantageous effects to be solved by the present invention more clearly, the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
[0032] 本发明提供一种晶硅太阳能电池正面导电浆料， 按照重量份为 100计， 包括以 下原料组分： [0032] 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:
[0033] 金属粉 80.0~93.0份； [0033] metal powder 80.0~93.0 parts;
[0034] 有机载体 6.0~15.0份； [0034] organic carrier 6.0~15.0 parts;
[0035] 氧化物刻蚀剂 1.0~5.0份； [0035] an oxide etchant 1.0 to 5.0 parts;
[0036] 其中， 所述氧化物刻蚀剂至少含有 PbO、 WO 3及 Li 20， 且所述 W0 3和 PbO的摩 尔比例为 0.5:35~5:20， 所述 WO 3和1^ 20的摩尔比例为 0.5:20~5:9。 [0036] wherein, 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.
[0037] 更为具体地， 以所述氧化物刻蚀剂摩尔量为 100%计， 所述氧化物刻蚀剂包括 以下组分： More specifically, the oxide etchant comprises the following components in terms of a molar amount of the oxide etchant of 100%:
[0038] PbO 20-35%； [0038] PbO 20-35%;
[0039] Te0 2 15-40%； [0039] Te0 2 15-40%;
[0040] Li 20 9.0-20.0%； [0040] Li 2 0 9.0-20.0%;
[0041] SiO 15.0-40.0%；
[0042] Bi 20 3 0.5-9.0%； [0041] SiO 15.0-40.0%; Bi 2 0 3 0.5-9.0%;
[0043] ZnO 0.5-15.0%； [0043] ZnO 0.5-15.0%;
[0044] B 20 3 0.5-10.0%； [0044] B 2 0 3 0.5-10.0%;
[0045] W03 0.5-5.0%； [0045] W03 0.5-5.0%;
[0046] 添加元素的氧化物 0~5.0%。 [0046] The oxide of the added element is 0 to 5.0%.
[0047] 本发明的配方组分中， 由于氧化物刻蚀剂中含有 PbO、 WO 3 Li 20这几种组分 ， 并且这几种组分以特定比例存在， 这些特定比例的组分能表现出优异的刻蚀 性能， 当氧化物刻蚀剂在烧结过程中熔融为液体进而使得银在其中溶解的量足 够多， 溶解了银的所述氧化物刻蚀剂液体的一部分用于对金属粉进行润湿并促 使金属粉烧结； 另一部分溶解了银的氧化物刻蚀剂液体流动至太阳能电池表面 与减反射层反应， 能够有效的刻蚀减反射层， 烧结后在冷却过程中， 溶解在氧 化物刻蚀剂液体中的银析出形成微小的纳米银颗粒， 使金属粉与硅形成良好的 欧姆接触， 降低了电阻， 形成接触电阻低、 导电性能好、 附着力强的正面电极 [0047] In the formulation component of the present invention, since 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.
[0048] 优选地， 添加元素的氧化物中添加元素为钛、 招、 银、 铬、 钪、 铜、 铌、 钒、 钠、 祖、 徳、 溴、 钴、 給、 镧、 、 镱、 铁、 钡、 锰、 锡、 镍、 锡、 砷、 错、 钾、 磷、 铟、 镓、 锗等中的一种或者两种及以上。 [0048] Preferably, 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.
[0049] 本发明中， 氧化物刻蚀剂不仅包括使用化学方法制成的氧化物和经过高温处理 后得到的氧化物， 还包括其含有阳离子的碳酸盐、 磷酸盐、 氟化物等， 例如所 述的锂的氧化物 Li 20可以使用 Li 2CO 3取代。 [0049] In the present invention, 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 .
[0050] 优选地， 氧化物刻蚀剂可以为晶体、 非晶体或者非晶体与晶体的混合物。 [0050] Preferably, the oxide etchant may be crystalline, amorphous or a mixture of amorphous and crystalline.
[0051] 优选地， 所述金属粉为银、 金、 铂、 铜、 铁、 镍、 锌、 钛、 钴、 铬、 招、 锰、 [0051] Preferably, the metal powder is silver, gold, platinum, copper, iron, nickel, zinc, titanium, cobalt, chromium, smear, manganese,
I巴、 铑中的至少一种。 At least one of I and 铑.
[0052] 进一步优选地， 所述金属粉为银包覆的铜、 铁、 镍、 锌、 钛、 钴、 铬、 招、 锰 中的至少一种， 其中， 银包覆层的厚度为 10~50nm。 [0052] Further preferably, 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.
[0053] 优选地， 所述金属粉为非银包覆的金属粉和银包覆的金属粉的混合体， 其中， 所述非银包覆的金属粉与银包覆的金属粉的重量比为 5/95~95/5， 非银包覆的金 属粉为银、 金、 铂、 铜、 铁、 镍、 锌、 钛、 钴、 铬、 招、 锰、 ffi、 铑中的至少
一种； 银包覆的金属粉为铜、 铁、 镍、 锌、 钛、 钴、 铬、 招、 锰中的至少一种 ， 所述银包覆层的厚度为 10~200nm。 [0053] Preferably, 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.
[0054] 本发明中所述有机载体包括有机溶剂、 聚合物、 润湿分散剂、 触变剂及其他功 能助剂等。 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.
[0055] 以所述有机载体重量为 100份计， 包括以下组分： 有机溶剂 50~95份； 聚合物 1~ 40份； 润湿分散剂 0.1~10份； 触变剂 1~20份。 [0055] 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.
[0056] 其中， 所述有机溶剂选自松油醇、 乙二醇丁醚醋酸酯、 乙二醇乙醚醋酸酯、 十 二醇酯、 二乙二醇丁醚、 三乙二醇丁醚、 三丙二醇甲醚、 萜烯类等高沸点的溶 剂中的至少一种。 [0056] wherein, 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.
[0057] 所述聚合物选自乙基纤维素、 甲基纤维素、 纤维素及其衍生物、 丙烯酸树脂、 醇酸树脂、 聚酯树脂中的至少一种。 [0057] The polymer is selected from at least one of ethyl cellulose, methyl cellulose, cellulose and derivatives thereof, acrylic resin, alkyd resin, and polyester resin.
[0058] 所述润湿分散剂选自脂肪酸 (油酸、 硬酯酸等)、 脂肪酸的酰胺衍生物 (油酸酰胺 、 硬脂酰胺等)、 脂肪酸的酯类衍生物、 聚乙烯蜡、 聚乙二醇中的一种或者两种 以上,主要用于帮助无机粉体在有机载体中的分散。 [0058] 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.
[0059] 所述触变剂选自氢化蓖麻油衍生物、 聚酰胺蜡、 聚脲、 气相二氧化硅中的一种 或者两种以上， 主要用于增加浆料在印刷过程中的触变性， 使银浆在印刷过程 中受到剪切时， 稠度变小， 容易丝网印刷， 停止剪切时， 稠度又增加， 以保证 电极有优异的高宽比。 [0059] 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. When the silver paste is sheared during the printing process, the consistency becomes small, and the screen printing is easy. When the shearing is stopped, the consistency is increased to ensure that the electrode has an excellent aspect ratio.
[0060] 进一步地， 有机载体还可以包括其他功能助剂， 所述其他功能助剂的重量份为 0.1-20份， 选自聚甲基苯基硅氧烷、 聚苯基硅氧烷、 邻苯二甲酸酯类 (如邻苯二甲 酸二乙酯、 邻苯二甲酸二丁酯等)、 微晶蜡、 聚二甲基硅氧烷、 聚乙烯醇缩丁醛( PVB)、 聚醚聚酯改性有机硅氧烷、 烷基改性有机硅氧烷中的一种或者两种以上 。 所述其他功能助剂可根据需要选择添加， 如加入微晶蜡等以降低表面张力， 加入邻苯二甲酸二丁酯 (DBP)等以改善浆料的柔韧性， 加入聚乙烯醇缩丁醛 (PVB )等改善黏附力。 [0060] Further, 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.
[0061] 如图 1所示， 本发明所述的晶硅太阳能电池正面导电浆料的制备方法包括以下 步骤： [0061] As shown in FIG. 1, the method for preparing a front side conductive paste of a crystalline silicon solar cell according to the present invention comprises the following steps:
[0062] S01.氧化物刻蚀剂的制备步骤如下： 按照如上所述的原料比例称取氧化物刻蚀
剂原料并且进行均匀混合； 将所述的均匀混合的氧化物刻蚀剂原料放入加热炉 加热至 900~1100°C， 并在 900-1100°C下保温 60-180min， 得到熔融的液态氧化物 刻蚀剂； 将所述熔融的液态氧化物刻蚀剂进行骤冷处理， 得到氧化物刻蚀剂颗 粒； 将所述氧化物刻蚀剂颗粒置于 60~80°C温度中烘干； 将所述的干燥的氧化物 刻蚀剂颗粒进行破碎处理得到粒度 0.5-5.(Vm的氧化物刻蚀剂粉， 然后置于干燥 箱中在 80~100°C烘干得到干燥的氧化物刻蚀剂粉。 [0062] S01. 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.
[0063] 优选地， 所述骤冷方式为将熔融的液态氧化物刻蚀剂倒入 5-25°C水中冷却或者 在流动的室温空气中冷却， 流动的冷空气温度在 25°C及以下。 [0063] Preferably, 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. .
[0064] 上述对氧化物刻蚀颗粒的破碎， 可以采用球磨机进行球磨处理， 也可以使用其 他方式使得氧化物刻蚀剂颗粒粒径变小。 [0064] 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.
[0065] S02.有机载体的制备如下： 按上所述有机载体原料重量比例依次称取有机载体 的原料， 将称取的有机载体原料放入容器， 在 40~100°C的温度下搅拌混合 100~1 60min, 得到有机载体。 [0065] S02. 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.
[0066] S03.正面浆料的制备， 将金属粉与上述制备的氧化物刻蚀剂、 有机载体进行混 合、 研磨得到所述正面导电银浆。 [0066] S03. Preparation of a front side paste, mixing the metal powder with the above-prepared oxide etchant and organic vehicle, and grinding to obtain the front conductive silver paste.
[0067] 本发明所述晶硅太阳能电池正面导电浆料的制作方法还有如下替换方法： [0067] 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:
[0068] 在一个实施方案中， 先将氧化物刻蚀剂和金属粉进行混合， 得到第一混合物， 再将该第一混合物与有机载体进行混合， 然后进行研磨处理， 得到晶硅太阳能 电池正面电极导电浆料。 [0068] In one embodiment, 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.
[0069] 在另一个实施方案中， 先将上述氧化物刻蚀剂和有机载体进行混合， 得到第一 混合物， 再往该第一混合物中加入金属粉， 然后进行研磨处理， 得到晶硅太阳 能电池正面电极导电浆料。 [0069] In another embodiment, 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.
[0070] 在又一个实施方案中， 先将金属粉和有机载体进行混合， 得到第一混合物， 再 向该第一混合物中加入氧化物刻蚀剂， 然后进行研磨处理， 得到晶硅太阳能电 池正面电极导电浆料。 [0070] In still another embodiment, 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.
[0071] 在再一个实施方案中， 分别以金属粉、 有机载体、 氧化物刻蚀剂各自重量份为 [0071] In still another embodiment, each of the metal powder, the organic vehicle, and the oxide etchant are respectively in parts by weight.
100计， 先将 20~60重量份的金属粉和 20~60重量份的有机载体进行混合， 得到第
混合物， 然后再将该第一混合物和第二混合物进行混合， 研磨处理， 得到晶硅 太阳能电池正面电极导电浆料。 100 meter, first mix 20~60 parts by weight of metal powder and 20~60 parts by weight of organic carrier to obtain the first The mixture is then mixed with the second mixture and ground to obtain a conductive paste of the front electrode of the crystalline silicon solar cell.
[0072] 请参考图 2、 图 3及图 4， 本发明还提供一种晶硅太阳能电池正面电极的制作方 法。 Referring to FIG. 2, FIG. 3 and FIG. 4, the present invention also provides a method for fabricating a front electrode of a crystalline silicon solar cell.
[0073] 所述制作方法涉及表面叠设有绝缘膜的晶体硅半导体元件， 所述晶体硅半导体 元件的结构如图 3所示， 100为具有相对第一表面和第二表面的晶体硅电池片， 在第一表面向外依次叠设有 P/N结 200、 绝缘膜 300, 在第一表面上印刷有背面银 浆 500、 背面铝浆 600, 其中， 绝缘膜 300可以是氮化硅膜、 氧化钛膜、 氧化铝膜 、 氧化硅膜中的至少一种。 [0073] 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.
[0074] 具体地， 所述晶硅太阳能电池正面电极的制作方法， 至少包括以下步骤： [0074] Specifically, the method for fabricating the front electrode of the crystalline silicon solar cell includes at least the following steps:
[0075] 步骤 S04.提供表面叠设有绝缘膜 300的晶体硅半导体元件； [0075] Step S04. Providing a crystalline silicon semiconductor component having an insulating film 300 on its surface;
[0076] 步骤 S05.通过印制的方式将如上任一种方案所述的晶硅太阳能电池正面导电浆 料 400（其中， 401为金属粉、 402为有机载体、 403为氧化物刻蚀剂）印制于所述绝 缘膜 300表面； [0076] 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;
[0077] 步骤 S06.对步骤 S05处理后的晶体硅半导体元件依次进行干燥、 烧结、 冷却处 理， 得到晶硅太阳能电池正面电极 700。 [0077] 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.
[0078] 具体地， 干燥温度为 80~400°C， 烧结温度为 700~820°C， 冷却条件为自然冷却 [0078] Specifically, the drying temperature is 80 to 400 ° C, the sintering temperature is 700 to 820 ° C, and the cooling condition is natural cooling.
[0079] 本发明还进一步地提供一种晶硅太阳能电池， 所述晶硅太阳能电池采用如上所 述的晶硅太阳能电池正面电极。 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.
[0080] 为了更好的说明本发明实施例提供的晶硅太阳能电池正面导电浆料及其制备方 法， 下面通过多个实施例进一步解释说明。 [0080] In order to better illustrate the front side conductive paste of the crystalline silicon solar cell provided by the embodiment of the present invention and a method for preparing the same, the following further explains by way of various embodiments.
[0081] 实施例 1 Embodiment 1
[0082] 一种晶硅太阳能电池正面导电浆料， 按总重量为 100份计算， 包括如下配方比 例的组分： 银粉 88.5份； 有机载体 9.0份； 氧化物刻蚀剂 2.5份。 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.
[0083] 其中， 以所述氧化物刻蚀剂摩尔总量为 100%计， 包括以下组分： [0083] wherein, in the total amount of the oxide etchant, the total amount is 100%, including the following components:
[0084] PbO 30%、 Te0 2 27%、 Li 20 9%、 SiO 2 20%、 B 20 3 3%、 Bi 20 3 4%、 ZnO 2%PbO 30%, Te0 2 27%, Li 2 0 9%, SiO 2 20%, B 2 0 3 3%, Bi 2 0 3 4%, ZnO 2%
、 WO 3 5%。
[0085] 所述氧化物刻蚀剂的制备方法为： 按照以上所述的比例称取氧化物刻蚀剂原料 并且进行均匀混合； 将所述的均匀混合的氧化物刻蚀剂原料放入加热炉加热至 1 000°C, 并在 1000°C下保温 120min， 得到熔融的液态氧化物刻蚀剂； 将所述的熔 融的液态氧化物刻蚀剂倒入常温 (25°C)水中冷却得到氧化物刻蚀剂颗粒； 将所述 的氧化物刻蚀剂颗粒置于干燥箱中在 80°C烘干； 将所述的干燥的氧化物刻蚀剂颗 粒置于球磨机中进行研磨得到粒度 0.5~7.(Vm的氧化物刻蚀剂粉， 然后置于干燥 箱中在 100°C烘干得到干燥的氧化物刻蚀剂粉。 , WO 3 5%. [0085] 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.
[0086] 以所述有机载体重量为 100%计， 所述有机载体含有以下组分： 松油醇、 十二 醇醋、 萜烯三者的混合物 70% ; 乙基纤维素 10%、 松香树脂 15%、 聚酰胺蜡 5%。 [0086] 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.
[0087] 所述晶硅太阳能电池正面导电浆料的制备方法包括以下步骤： [0087] The method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
[0088] 按照以上所述配方重量比例称取银粉 88.0份， 有机载体 9.0份和所述氧化物刻蚀 剂粉 3.0份， 均匀混合和研磨处理， 得到所述晶硅太阳能电池正面导电浆料。 [0088] 88.0 parts of silver powder, 9.0 parts of organic carrier and 3.0 parts of the oxide etchant powder were weighed according to the above formula weight ratio, uniformly mixed and ground to obtain a front conductive paste of the crystalline silicon solar cell.
[0089] 一种晶硅太阳能电池正面电极的制作方法， 包括以下步骤： [0089] A method for fabricating a front electrode of a crystalline silicon solar cell includes the following steps:
[0090] 通过丝网印制的方式， 将实施例 1中晶硅太阳能电池正面导电浆料印制在具有 绝缘膜的晶硅太阳能电池正面， 其太阳能电池背面丝网印制了背银和背铝， 然 后于 770°C进行烧结， 得到所述的晶硅太阳能电池正面电极。 [0090] 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.
[0091] 测试获得的所述电池片的效率， I-V测试结果汇总在表 1中。 The efficiency of the obtained cell sheets was tested, and the I-V test results are summarized in Table 1.
[0092] 实施例 2 Example 2
[0093] 一种晶硅太阳能电池正面导电浆料， 按总重量为 100份计算， 包括如下配方比 例的组分： 银粉 88.5份； 有机载体 9.0份； 氧化物刻蚀剂 2.5份。 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.
[0094] 其中， 以所述氧化物刻蚀剂摩尔总量为 100%计， 包括以下组分： [0094] wherein, the total amount of the oxide etchant is 100%, including the following components:
[0095] PbO 23%、 TeO 2 31 %、 Li 20 11 %、 SiO 2 20%、 B 20 3 2%、 Bi 20 3 7%、 ZnOPbO 23%, TeO 2 31 %, Li 2 0 11 %, SiO 2 20%, B 2 0 3 2%, Bi 2 0 3 7%, ZnO
2%、 WO 3 4%。 2%, WO 3 4%.
[0096] 所述氧化物刻蚀剂的制备方法为： 按照以上所述的比例称取氧化物刻蚀剂原料 并且进行均匀混合； 将所述的均匀混合的氧化物刻蚀剂原料放入加热炉加热至 1 000°C, 并在 1000°C下保温 120min， 得到熔融的液态氧化物刻蚀剂； 将所述的熔 融的液态氧化物刻蚀剂倒入常温 (25°C)水中冷却得到氧化物刻蚀剂颗粒； 将所述 的氧化物刻蚀剂颗粒置于干燥箱中在 80°C烘干； 将所述的干燥的氧化物刻蚀剂颗
粒置于球磨机中进行研磨得到粒度 0.5~7.(Vm的氧化物刻蚀剂粉， 然后置于干燥 箱中在 100°C烘干得到干燥的氧化物刻蚀剂粉。 [0096] 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.
[0097] 以所述有机载体重量为 100%计， 所述有机载体含有以下组分： 松油醇、 十二 醇醋、 萜烯三者的混合物 70% ; 乙基纤维素 10%、 松香树脂 15%、 聚酰胺蜡 5%。 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.
[0098] 所述晶硅太阳能电池正面导电浆料的制备方法包括以下步骤： [0098] The method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
[0099] 按照以上所述配方重量比例称取银粉 88.5份， 有机载体 9.0份， 和所述氧化物刻 蚀剂粉 2.5份， 进行均匀混合和研磨处理， 得到所述晶硅太阳能电池正面导电浆 料。 [0099] 88.5 parts of silver powder, 9.0 parts of organic carrier, and 2.5 parts of the oxide etchant powder were weighed according to the above formula weight ratio, and uniformly mixed and polished to obtain a front conductive paste of the crystalline silicon solar cell. material.
[0100] 一种晶硅太阳能电池正面电极的制作方法， 包括以下步骤： [0100] A method for fabricating a front electrode of a crystalline silicon solar cell, comprising the steps of:
[0101] 通过丝网印制的方式， 将实施例 2中晶硅太阳能电池正面导电浆料印制在具有 绝缘膜的晶硅太阳能电池正面， 其太阳能电池背面丝网印制了背银和背铝， 然 后于 800°C进行烧结， 得到所述的晶硅太阳能电池正面电极。 [0101] 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.
[0102] 测试获得的所述电池片的效率， I-V测试结果汇总在表 1中。 The efficiency of the obtained cell sheets was tested, and the I-V test results are summarized in Table 1.
[0103] 实施例 3 Example 3
[0104] 一种晶硅太阳能电池正面导电浆料， 按总重量为 100份计算， 包括如下配方比 例的组分： 银粉 88.5份； 有机载体 9.0份； 氧化物刻蚀剂 2.5份。 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.
[0105] 其中， 以所述氧化物刻蚀剂摩尔总量为 100%计， 包括以下组分： [0105] wherein, the total amount of the oxide etchant is 100%, including the following components:
[0106] Pb0 26%、 Te0 2 29%、 Li 20 13% ^ Si0 2 22%、 B 20 3 1%、 Bi 20 3 4%、 ZnO 2%、 WO 3 3%。 Pb0 26%, Te0 2 29%, Li 2 0 13% ^ Si0 2 22%, B 2 0 3 1%, Bi 2 0 3 4%, ZnO 2%, WO 3 3%.
[0107] 所述氧化物刻蚀剂的制备方法为： 按照以上所述的比例称取氧化物刻蚀剂原料 并且进行均匀混合； 将所述的均匀混合的氧化物刻蚀剂原料放入加热炉加热至 1 000°C, 并在 1000°C下保温 120min， 得到熔融的液态氧化物刻蚀剂； 将所述的熔 融的液态氧化物刻蚀剂倒入常温 (25°C)水中冷却得到氧化物刻蚀剂颗粒； 将所述 的氧化物刻蚀剂颗粒置于干燥箱中在 80°C烘干； 将所述的干燥的氧化物刻蚀剂颗 粒置于球磨机中进行研磨得到粒度 0.5~7.(Vm的氧化物刻蚀剂粉， 然后置于干燥 箱中在 100°C烘干得到干燥的氧化物刻蚀剂粉。 [0107] 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.
[0108] 以所述有机载体重量为 100%计， 所述有机载体含有以下组分： 松油醇、 十二 醇醋、 萜烯三者的混合物 70% ; 乙基纤维素 10%、 松香树脂 15%、 聚酰胺蜡 5%。
[0109] 所述晶硅太阳能电池正面导电浆料的制备方法包括以下步骤： 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. [0109] The method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
[0110] 按照以上所述配方重量比例称取银粉 88.5份， 有机载体 9.0份， 和所述氧化物刻 蚀剂粉 2.5份， 进行均匀混合和研磨处理， 得到所述晶硅太阳能电池正面导电浆 料。 [0110] 88.5 parts of silver powder, 9.0 parts of organic carrier, and 2.5 parts of the oxide etchant powder were weighed according to the above formula weight ratio, and uniformly mixed and polished to obtain a front conductive paste of the crystalline silicon solar cell. material.
[0111] 一种晶硅太阳能电池正面电极的制作方法， 包括以下步骤： [0111] A method for fabricating a front electrode of a crystalline silicon solar cell, comprising the steps of:
[0112] 通过丝网印制的方式， 将实施例 3中晶硅太阳能电池正面导电浆料印制在具有 绝缘膜的晶硅太阳能电池正面， 其太阳能电池背面丝网印制了背银和背铝， 然 后于 780°C进行烧结， 得到所述的晶硅太阳能电池正面电极。 [0112] 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.
[0113] 测试获得的所述电池片的效率， I-V测试结果汇总在表 1中。 The efficiency of the obtained cell sheets was tested, and the I-V test results are summarized in Table 1.
[0114] 实施例 4 Example 4
[0115] 一种晶硅太阳能电池正面导电浆料， 按总重量为 100份计算， 包括如下配方比 例的组分： 银粉 88.5份； 有机载体 9.0份； 氧化物刻蚀剂 2.5份。 [0115] 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.
[0116] 其中， 以所述氧化物刻蚀剂摩尔总量为 100%计， 包括以下组分： [0116] wherein, the total amount of the oxide etchant is 100%, including the following components:
[0117] Pb0 35%、 TeO 2 20%、 Li 20 18%、 Si0 2 17%、 B 20 3 2%、 Bi 20 3 4%、 ZnOPb0 35%, TeO 2 20%, Li 2 0 18%, Si0 2 17%, B 2 0 3 2%, Bi 2 0 3 4%, ZnO
2%、 WO 3 2%。 2%, WO 3 2%.
[0118] 所述氧化物刻蚀剂的制备方法为： 按照以上所述的比例称取氧化物刻蚀剂原料 并且进行均匀混合； 将所述的均匀混合的氧化物刻蚀剂原料放入加热炉加热至 1 000°C, 并在 1000°C下保温 120min， 得到熔融的液态氧化物刻蚀剂； 将所述的熔 融的液态氧化物刻蚀剂倒入常温 (25°C)水中冷却得到氧化物刻蚀剂颗粒； 将所述 的氧化物刻蚀剂颗粒置于干燥箱中在 80°C烘干； 将所述的干燥的氧化物刻蚀剂颗 粒置于球磨机中进行研磨得到粒度 0.5~7.(Vm的氧化物刻蚀剂粉， 然后置于干燥 箱中在 100°C烘干得到干燥的氧化物刻蚀剂粉。 [0118] 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.
[0119] 以所述有机载体重量为 100%计， 所述有机载体含有以下组分： 松油醇、 十二 醇醋、 萜烯三者的混合物 70% ; 乙基纤维素 10%、 松香树脂 15%、 聚酰胺蜡 5%。 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.
[0120] 所述晶硅太阳能电池正面导电浆料的制备方法包括以下步骤： [0120] The method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
[0121] 按照以上所述配方重量比例称取银粉 88.5份， 有机载体 9.0份， 和所述氧化物刻 蚀剂粉 2.5份， 进行均匀混合和研磨处理， 得到所述晶硅太阳能电池正面导电浆 料。
[0122] 一种晶硅太阳能电池正面电极的制作方法， 包括以下步骤： [0121] 88.5 parts of silver powder, 9.0 parts of organic carrier, and 2.5 parts of the oxide etchant powder were weighed according to the above formula weight ratio, and uniformly mixed and polished to obtain a front conductive paste of the crystalline silicon solar cell. material. [0122] A method for fabricating a front electrode of a crystalline silicon solar cell, comprising the steps of:
[0123] 通过丝网印制的方式， 将实施例 4中晶硅太阳能电池正面导电浆料印制在具有 绝缘膜的晶硅太阳能电池正面， 其太阳能电池背面丝网印制了背银和背铝， 然 后于 780°C进行烧结， 得到所述的晶硅太阳能电池正面电极。 [0123] 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.
[0124] 测试获得的所述电池片的效率， I-V测试结果汇总在表 1中。 [0124] The efficiency of the obtained battery sheets was tested, and the I-V test results are summarized in Table 1.
[0125] 实施例 5 Example 5
[0126] 一种晶硅太阳能电池正面导电浆料， 按总重量为 100份计算， 包括如下配方比 例的组分： 银粉 88.5份； 有机载体 9.0份； 氧化物刻蚀剂 2.5份。 [0126] 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.
[0127] 其中， 以所述氧化物刻蚀剂摩尔总量为 100%计， 包括以下组分： [0127] wherein, the total amount of the oxide etchant is 100%, including the following components:
[0128] PbO 20%、 Te0 2 31%、 Li 20 17% ^ Si0 2 16%、 B 20 3 5%、 Bi 20 3 8%、 ZnOPbO 20%, Te0 2 31%, Li 2 0 17% ^ Si0 2 16%, B 2 0 3 5%, Bi 2 0 3 8%, ZnO
2%、 WO 3 1%。 2%, WO 3 1%.
[0129] 所述氧化物刻蚀剂的制备方法为： 按照以上所述的比例称取氧化物刻蚀剂原料 并且进行均匀混合； 将所述的均匀混合的氧化物刻蚀剂原料放入加热炉加热至 1 000°C, 并在 1000°C下保温 120min， 得到熔融的液态氧化物刻蚀剂； 将所述的熔 融的液态氧化物刻蚀剂倒入常温 (25°C)水中冷却得到氧化物刻蚀剂颗粒； 将所述 的氧化物刻蚀剂颗粒置于干燥箱中在 80°C烘干； 将所述的干燥的氧化物刻蚀剂颗 粒置于球磨机中进行研磨得到粒度 0.5~7.(Vm的氧化物刻蚀剂粉， 然后置于干燥 箱中在 100°C烘干得到干燥的氧化物刻蚀剂粉。 [0129] 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.
[0130] 以所述有机载体重量为 100%计， 所述有机载体含有以下组分： 松油醇、 十二 醇醋、 萜烯三者的混合物 70% ; 乙基纤维素 10%、 松香树脂 15%、 聚酰胺蜡 5%。 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.
[0131] 所述晶硅太阳能电池正面导电浆料的制备方法包括以下步骤： [0131] The method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
[0132] 按照以上所述配方重量比例称取银粉 88.5份， 有机载体 9.0份， 和所述氧化物刻 蚀剂粉 2.5份， 进行均匀混合和研磨处理， 得到所述晶硅太阳能电池正面导电浆 料。 [0132] 88.5 parts of silver powder, 9.0 parts of organic carrier, and 2.5 parts of the oxide etchant powder were weighed according to the above formula weight ratio, and uniformly mixed and polished to obtain a front conductive paste of the crystalline silicon solar cell. material.
[0133] 一种晶硅太阳能电池正面电极的制作方法， 包括以下步骤： [0133] A method for fabricating a front electrode of a crystalline silicon solar cell, comprising the steps of:
[0134] 通过丝网印制的方式， 将实施例 5中晶硅太阳能电池正面导电浆料印制在具有 绝缘膜的晶硅太阳能电池正面， 其太阳能电池背面丝网印制了背银和背铝， 然 后于 790°C进行烧结， 得到所述的晶硅太阳能电池正面电极。
[0135] 测试获得的所述电池片的效率， I-V测试结果汇总在表 1中。 [0134] 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. [0135] The efficiency of the obtained cell sheets was tested, and the IV test results are summarized in Table 1.
[0136] 实施例 6 Example 6
[0137] 一种晶硅太阳能电池正面导电浆料， 按总重量为 100份计算， 包括如下配方比 例的组分： 银粉 88.5份； 有机载体 9.0份； 氧化物刻蚀剂 2.5份。 [0137] 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.
[0138] 其中， 以所述氧化物刻蚀剂摩尔总量为 100%计， 包括以下组分： [0138] wherein, the total amount of the oxide etchant is 100%, including the following components:
[0139] PbO 30%、 Te0 2 32%、 Li 20 9.5% ^ SiO 2 20%、 B 20 3 2%、 Bi 20 3 4%、 ZnOPbO 30%, Te0 2 32%, Li 2 0 9.5% ^ SiO 2 20%, B 2 0 3 2%, Bi 2 0 3 4%, ZnO
2%、 WO 3 0.5%。 2%, WO 3 0.5%.
[0140] 所述氧化物刻蚀剂的制备方法为： 按照以上所述的比例称取氧化物刻蚀剂原料 并且进行均匀混合； 将所述的均匀混合的氧化物刻蚀剂原料放入加热炉加热至 1 000°C, 并在 1000°C下保温 120min， 得到熔融的液态氧化物刻蚀剂； 将所述的熔 融的液态氧化物刻蚀剂倒入常温 (25°C)水中冷却得到氧化物刻蚀剂颗粒； 将所述 的氧化物刻蚀剂颗粒置于干燥箱中在 80°C烘干； 将所述的干燥的氧化物刻蚀剂颗 粒置于球磨机中进行研磨得到粒度 0.5~7.(Vm的氧化物刻蚀剂粉， 然后置于干燥 箱中在 100°C烘干得到干燥的氧化物刻蚀剂粉。 [0140] 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.
[0141] 以所述有机载体重量为 100%计， 所述有机载体含有以下组分： 松油醇、 十二 醇醋、 萜烯三者的混合物 70% ; 乙基纤维素 10%、 松香树脂 15%、 聚酰胺蜡 5%。 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.
[0142] 所述晶硅太阳能电池正面导电浆料的制备方法包括以下步骤： [0142] The method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
[0143] 按照以上所述配方重量比例称取银粉 88.5份， 有机载体 9.0份， 和所述氧化物刻 蚀剂粉 2.5份， 进行均匀混合和研磨处理， 得到所述晶硅太阳能电池正面导电浆 料。 [0143] 88.5 parts of silver powder, 9.0 parts of organic carrier, and 2.5 parts of the oxide etchant powder were weighed according to the above formula weight ratio, and uniformly mixed and polished to obtain a front conductive paste of the crystalline silicon solar cell. material.
[0144] 一种晶硅太阳能电池正面电极的制作方法， 包括以下步骤： [0144] A method for fabricating a front electrode of a crystalline silicon solar cell, comprising the steps of:
[0145] 通过丝网印制的方式， 将实施例 6中晶硅太阳能电池正面导电浆料印制在具有 绝缘膜的晶硅太阳能电池正面， 其太阳能电池背面丝网印制了背银和背铝， 然 后于 800°C进行烧结， 得到所述的晶硅太阳能电池正面电极。 [0145] 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.
[0146] 测试获得的所述电池片的效率， I-V测试结果汇总在表 1中。 [0146] The efficiency of the obtained battery sheets was tested, and the I-V test results are summarized in Table 1.
[0147] 实施例 7 Example 7
[0148] 一种晶硅太阳能电池正面导电浆料， 按总重量为 100份计算， 包括如下配方比 例的组分： 银粉 88.5份； 有机载体 9.0份； 氧化物刻蚀剂 2.5份。
[0149] 其中， 以所述氧化物刻蚀剂摩尔总量为 100%计， 包括以下组分： [0148] 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:
[0150] Pb0 24%、 Te0 2 19%、 Li 20 15% ^ Si0 2 29%、 B 20 3 5%、 Bi 20 3 4%、 ZnOPb0 24%, Te0 2 19%, Li 2 0 15% ^ Si0 2 29%, B 2 0 3 5%, Bi 2 0 3 4%, ZnO
2%、 WO 3 1%' A1 20 3 1%。 2%, WO 3 1% ' A1 2 0 3 1%.
[0151] 所述氧化物刻蚀剂的制备方法为： 按照以上所述的比例称取氧化物刻蚀剂原料 并且进行均匀混合； 将所述的均匀混合的氧化物刻蚀剂原料放入加热炉加热至 1 000°C, 并在 1000°C下保温 120min， 得到熔融的液态氧化物刻蚀剂； 将所述的熔 融的液态氧化物刻蚀剂倒入常温 (25°C)水中冷却得到氧化物刻蚀剂颗粒； 将所述 的氧化物刻蚀剂颗粒置于干燥箱中在 80°C烘干； 将所述的干燥的氧化物刻蚀剂颗 粒置于球磨机中进行研磨得到粒度 0.5~7.(Vm的氧化物刻蚀剂粉， 然后置于干燥 箱中在 100°C烘干得到干燥的氧化物刻蚀剂粉。 [0151] 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.
[0152] 以所述有机载体重量为 100%计， 所述有机载体含有以下组分： 松油醇、 十二 醇醋、 萜烯三者的混合物 70% ; 乙基纤维素 10%、 松香树脂 15%、 聚酰胺蜡 5%。 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.
[0153] 所述晶硅太阳能电池正面导电浆料的制备方法包括以下步骤： [0153] The method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
[0154] 按照以上所述配方重量比例称取银粉 88.5份， 有机载体 9.0份， 和所述氧化物刻 蚀剂粉 2.5份， 进行均匀混合和研磨处理， 得到所述晶硅太阳能电池正面导电浆 料。 [0154] 88.5 parts of silver powder, 9.0 parts of organic carrier, and 2.5 parts of the oxide etchant powder were weighed according to the above formula weight ratio, and uniformly mixed and polished to obtain a front conductive paste of the crystalline silicon solar cell. material.
[0155] 一种晶硅太阳能电池正面电极的制作方法， 包括以下步骤： [0155] A method for fabricating a front electrode of a crystalline silicon solar cell, comprising the steps of:
[0156] 通过丝网印制的方式， 将实施例 7中晶硅太阳能电池正面导电浆料印制在具有 绝缘膜的晶硅太阳能电池正面， 其太阳能电池背面丝网印制了背银和背铝， 然 后于 800°C进行烧结， 得到所述的晶硅太阳能电池正面电极。 [0156] 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.
[0157] 测试获得的所述电池片的效率， I-V测试结果汇总在表 1中。 [0157] The efficiency of the obtained battery sheets was tested, and the I-V test results are summarized in Table 1.
[0158] 实施例 8 Example 8
[0159] 一种晶硅太阳能电池正面导电浆料， 按总重量为 100份计算， 包括如下配方比 例的组分： 银粉 88.5份； 有机载体 9.0份； 氧化物刻蚀剂 2.5份。 [0159] 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.
[0160] 其中， 以所述氧化物刻蚀剂摩尔总量为 100%计， 包括以下组分： [0160] wherein, the total amount of the oxide etchant is 100%, including the following components:
[0161] PbO 20%、 TeO 2 40%、 Li 20 15% ^ Si0 2 15%、 B 20 3 2%、 Bi 20 3 4%、 ZnOPbO 20%, TeO 2 40%, Li 2 0 15% ^ Si0 2 15%, B 2 0 3 2%, Bi 2 0 3 4%, ZnO
2%、 WO 3 2%。 2%, WO 3 2%.
[0162] 所述氧化物刻蚀剂的制备方法为： 按照以上所述的比例称取氧化物刻蚀剂原料
并且进行均匀混合； 将所述的均匀混合的氧化物刻蚀剂原料放入加热炉加热至 1 000°C, 并在 1000°C下保温 120min， 得到熔融的液态氧化物刻蚀剂； 将所述的熔 融的液态氧化物刻蚀剂倒入常温 (25°C)水中冷却得到氧化物刻蚀剂颗粒； 将所述 的氧化物刻蚀剂颗粒置于干燥箱中在 80°C烘干； 将所述的干燥的氧化物刻蚀剂颗 粒置于球磨机中进行研磨得到粒度 0.5~7.(Vm的氧化物刻蚀剂粉， 然后置于干燥 箱中在 100°C下进行烘干， 得到干燥的氧化物刻蚀剂粉。 [0162] 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.
[0163] 以所述有机载体重量为 100%计， 所述有机载体含有以下组分： 松油醇、 十二 醇醋、 萜烯三者的混合物 70% ; 乙基纤维素 10%、 松香树脂 15%、 聚酰胺蜡 5%。 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.
[0164] 所述晶硅太阳能电池正面导电浆料的制备方法包括以下步骤： [0164] The method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
[0165] 按照以上所述配方重量比例称取银粉 88.5份， 有机载体 9.0份， 和所述氧化物刻 蚀剂粉 2.5份， 进行均匀混合和研磨处理， 得到所述晶硅太阳能电池正面导电浆 料。 [0165] 88.5 parts of silver powder, 9.0 parts of organic carrier, and 2.5 parts of the oxide etchant powder were weighed according to the above formula weight ratio, and uniformly mixed and polished to obtain a front conductive paste of the crystalline silicon solar cell. material.
[0166] 一种晶硅太阳能电池正面电极的制作方法， 包括以下步骤： [0166] A method for fabricating a front electrode of a crystalline silicon solar cell, comprising the steps of:
[0167] 通过丝网印制的方式， 将实施例 8中晶硅太阳能电池正面导电浆料印制在具有 绝缘膜的晶硅太阳能电池正面， 其太阳能电池背面丝网印制了背银和背铝， 然 后于 800°C进行烧结， 得到所述的晶硅太阳能电池正面电极。 [0167] 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.
[0168] 测试获得的所述电池片的效率， I-V测试结果汇总在表 1中。 [0168] The efficiency of the obtained battery sheets was tested, and the I-V test results are summarized in Table 1.
[0169] 实施例 9 Example 9
[0170] 一种晶硅太阳能电池正面导电浆料， 按总重量为 100份计算， 包括如下配方比 例的组分： 银粉 88.5份； 有机载体 9.0份； 氧化物刻蚀剂 2.5份。 [0170] 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.
[0171] 其中， 以所述氧化物刻蚀剂摩尔总量为 100%计， 包括以下组分： [0171] wherein, the total amount of the oxide etchant is 100%, including the following components:
[0172] PbO20% TeO 2 40%、 Li 20 15% ^ Si0 2 15% B 2O 3 0% Bi 20 3 4%、 ZnO 2%PbO20% TeO 2 40%, Li 2 0 15% ^ Si0 2 15% B 2 O 3 0% Bi 2 0 3 4%, ZnO 2%
、 wo 3 4%。 , wo 3 4%.
[0173] 所述氧化物刻蚀剂的制备方法为： 按照以上所述的比例称取氧化物刻蚀剂原料 并且进行均匀混合； 将所述的均匀混合的氧化物刻蚀剂原料放入加热炉加热至 1 000°C, 并在 1000°C下保温 120min， 得到熔融的液态氧化物刻蚀剂； 将所述的熔 融的液态氧化物刻蚀剂倒入常温 (25°C)水中冷却得到氧化物刻蚀剂颗粒； 将所述 的氧化物刻蚀剂颗粒置于干燥箱中在 80°C烘干； 将所述的干燥的氧化物刻蚀剂颗
粒置于球磨机中进行研磨得到粒度 0.5~7.(Vm的氧化物刻蚀剂粉， 然后置于干燥 箱中在 100°C烘干得到干燥的氧化物刻蚀剂粉。 [0173] 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.
[0174] 以所述有机载体重量为 100%计， 所述有机载体含有以下组分： 松油醇、 十二 醇醋、 萜烯三者的混合物 70% ; 乙基纤维素 10%、 松香树脂 15%、 聚酰胺蜡 5%。 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.
[0175] 所述晶硅太阳能电池正面导电浆料的制备方法包括以下步骤： [0175] The method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
[0176] 按照以上所述配方重量比例称取银粉 88.5份， 有机载体 9.0份， 和所述氧化物刻 蚀剂粉 2.5份， 进行均匀混合和研磨处理， 得到所述晶硅太阳能电池正面导电浆 料。 [0176] 88.5 parts of silver powder, 9.0 parts of organic carrier, and 2.5 parts of the oxide etchant powder were weighed according to the above formula weight ratio, and uniformly mixed and polished to obtain a front conductive paste of the crystalline silicon solar cell. material.
[0177] 一种晶硅太阳能电池正面电极的制作方法， 包括以下步骤： [0177] A method for fabricating a front electrode of a crystalline silicon solar cell, comprising the steps of:
[0178] 通过丝网印制的方式， 将实施例 9中晶硅太阳能电池正面导电浆料印制在具有 绝缘膜的晶硅太阳能电池正面， 其太阳能电池背面丝网印制了背银和背铝， 然 后于 800°C进行烧结， 得到所述的晶硅太阳能电池正面电极。 [0178] 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.
[0179] 测试获得的所述电池片的效率， I-V测试结果汇总在表 1中。 [0179] The efficiency of the obtained battery sheets was tested, and the I-V test results are summarized in Table 1.
[0180] 实施例 10 Example 10
[0181] 一种晶硅太阳能电池正面导电浆料， 按总重量为 100份计算， 包括如下配方比 例的组分： 银粉 88.5份； 有机载体 9.0份； 氧化物刻蚀剂 2.5份。 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.
[0182] 其中， 以所述氧化物刻蚀剂摩尔总量为 100%计， 包括以下组分： Wherein, the total amount of the oxide etchant is 100%, and the following components are included:
[0183] PbO 20%、 Te0 2 33%、 Li 20 15% ^ Si0 2 15%、 B 20 3 2%、 Bi 20 3 l l%、 ZnOPbO 20%, Te0 2 33%, Li 2 0 15% ^ Si0 2 15%, B 2 0 3 2%, Bi 2 0 3 ll%, ZnO
2%、 WO 3 2%。 2%, WO 3 2%.
[0184] 所述氧化物刻蚀剂的制备方法为： 按照以上所述的比例称取氧化物刻蚀剂原料 并且进行均匀混合； 将所述的均匀混合的氧化物刻蚀剂原料放入加热炉加热至 1 000°C, 并在 1000°C下保温 120min， 得到熔融的液态氧化物刻蚀剂； 将所述的熔 融的液态氧化物刻蚀剂倒入常温 (25°C)水中冷却得到氧化物刻蚀剂颗粒； 将所述 的氧化物刻蚀剂颗粒置于干燥箱中在 80°C烘干； 将所述的干燥的氧化物刻蚀剂颗 粒置于球磨机中进行研磨得到粒度 0.5~7.(Vm的氧化物刻蚀剂粉， 然后置于干燥 箱中在 100°C烘干得到干燥的氧化物刻蚀剂粉。 [0184] 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.
[0185] 以所述有机载体重量为 100%计， 所述有机载体含有以下组分： 松油醇、 十二 醇醋、 萜烯三者的混合物 70% ; 乙基纤维素 10%、 松香树脂 15%、 聚酰胺蜡 5%。
[0186] 所述晶硅太阳能电池正面导电浆料的制备方法包括以下步骤： 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. [0186] The method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
[0187] 按照以上所述配方重量比例称取银粉 88.5份， 有机载体 9.0份， 和所述氧化物刻 蚀剂粉 2.5份， 进行均匀混合和研磨处理， 得到所述晶硅太阳能电池正面导电浆 料。 [0187] 88.5 parts of silver powder, 9.0 parts of organic carrier, and 2.5 parts of the oxide etchant powder were weighed according to the above formula weight ratio, and uniformly mixed and polished to obtain a front conductive paste of the crystalline silicon solar cell. material.
[0188] 一种晶硅太阳能电池正面电极的制作方法， 包括以下步骤： [0188] A method for fabricating a front electrode of a crystalline silicon solar cell, comprising the steps of:
[0189] 通过丝网印制的方式， 将实施例 10中晶硅太阳能电池正面导电浆料印制在具有 绝缘膜的晶硅太阳能电池正面， 其太阳能电池背面丝网印制了背银和背铝， 然 后于 800°C进行烧结， 得到所述的晶硅太阳能电池正面电极。 [0189] 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.
[0190] 测试获得的所述电池片的效率， I-V测试结果汇总在表 1中。 [0190] The efficiency of the obtained battery sheets was tested, and the I-V test results are summarized in Table 1.
[0191] 实施例 11 Example 11
[0192] 一种晶硅太阳能电池正面导电浆料， 按总重量为 100份计算， 包括如下配方比 例的组分： 银粉 88.5份； 有机载体 9.0份； 氧化物刻蚀剂 2.5份。 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.
[0193] 其中， 以所述氧化物刻蚀剂摩尔总量为 100%计， 包括以下组分： [0193] wherein, in the total amount of the oxide etchant, the total amount is 100%, and the following components are included:
[0194] Pb0 17%、 Te0 2 42%、 Li 20 3%、 SiO 2 10%、 B 20 3 2%、 Bi 20 3 4%、 ZnO 2%Pb0 17%, Te0 2 42%, Li 2 0 3%, SiO 2 10%, B 2 0 3 2%, Bi 2 0 3 4%, ZnO 2%
、 WO 3 20%。 , WO 3 20%.
[0195] 所述氧化物刻蚀剂的制备方法为： 按照以上所述的比例称取氧化物刻蚀剂原料 并且进行均匀混合； 将所述的均匀混合的氧化物刻蚀剂原料放入加热炉加热至 1 000°C, 并在 1000°C下保温 120min， 得到熔融的液态氧化物刻蚀剂； 将所述的熔 融的液态氧化物刻蚀剂倒入常温 (25°C)水中冷却得到氧化物刻蚀剂颗粒； 将所述 的氧化物刻蚀剂颗粒置于干燥箱中在 80°C烘干； 将所述的干燥的氧化物刻蚀剂颗 粒置于球磨机中进行研磨得到粒度 0.5~7.(Vm的氧化物刻蚀剂粉， 然后置于干燥 箱中在 100°C烘干得到干燥的氧化物刻蚀剂粉。 [0195] 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.
[0196] 以所述有机载体重量为 100%计， 所述有机载体含有以下组分： 松油醇、 十二 醇醋、 萜烯三者的混合物 70% ; 乙基纤维素 10%、 松香树脂 15%、 聚酰胺蜡 5%。 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.
[0197] 所述晶硅太阳能电池正面导电浆料的制备方法包括以下步骤： [0197] The method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
[0198] 按照以上所述配方重量比例称取银粉 88.5份， 有机载体 9.0份， 和所述氧化物刻 蚀剂粉 2.5份， 进行均匀混合和研磨处理， 得到所述晶硅太阳能电池正面导电浆 料。
[0199] 一种晶硅太阳能电池正面电极的制作方法， 包括以下步骤： [0198] 88.5 parts of silver powder, 9.0 parts of organic carrier, and 2.5 parts of the oxide etchant powder were weighed according to the above formula weight ratio, and uniformly mixed and polished to obtain a front conductive paste of the crystalline silicon solar cell. material. [0199] A method for fabricating a front electrode of a crystalline silicon solar cell, comprising the steps of:
[0200] 通过丝网印制的方式， 将实施例 11中晶硅太阳能电池正面导电浆料印制在具有 绝缘膜的晶硅太阳能电池正面， 其太阳能电池背面丝网印制了背银和背铝， 然 后于 800°C进行烧结， 得到所述的晶硅太阳能电池正面电极。 [0200] 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.
[0201] 测试获得的所述电池片的效率， I-V测试结果汇总在表 1中。 The efficiency of the obtained cell sheets was tested, and the I-V test results are summarized in Table 1.
[0202] 实施例 12 Example 12
[0203] 一种晶硅太阳能电池正面导电浆料， 按总重量为 100份计算， 包括如下配方比 例的组分： 银粉 88.5份； 有机载体 9.0份； 氧化物刻蚀剂 2.5份。 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.
[0204] 其中， 以所述氧化物刻蚀剂摩尔总量为 100%计， 包括以下组分： [0204] wherein, the total amount of the oxide etchant is 100%, including the following components:
[0205] PbO 15%、 TeO 2 42%、 Li 20 3%、 SiO 2 22%、 B 20 3 2%、 Bi 20 3 4%、 ZnO 2%PbO 15%, TeO 2 42%, Li 2 0 3%, SiO 2 22%, B 2 0 3 2%, Bi 2 0 3 4%, ZnO 2%
、 WO 3 10%。 , WO 3 10%.
[0206] 所述氧化物刻蚀剂的制备方法为： 按照以上所述的比例称取氧化物刻蚀剂原料 并且进行均匀混合； 将所述的均匀混合的氧化物刻蚀剂原料放入加热炉加热至 1 000°C, 并在 1000°C下保温 120min， 得到熔融的液态氧化物刻蚀剂； 将所述的熔 融的液态氧化物刻蚀剂倒入常温 (25°C)水中冷却得到氧化物刻蚀剂颗粒； 将所述 的氧化物刻蚀剂颗粒置于干燥箱中在 80°C烘干； 将所述的干燥的氧化物刻蚀剂颗 粒置于球磨机中进行研磨得到粒度 0.5~7.(Vm的氧化物刻蚀剂粉， 然后置于干燥 箱中在 100°C烘干得到干燥的氧化物刻蚀剂粉。 [0206] 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.
[0207] 以有机载体重量为 100%计， 有机载体含有以下组分： 松油醇、 十二醇酯、 萜 烯三者的混合物 70% ; 乙基纤维素 10%、 松香树脂 15%、 聚酰胺蜡 5%。 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%.
[0208] 所述晶硅太阳能电池正面导电浆料的制备方法包括以下步骤： [0208] The method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
[0209] 按照以上所述配方重量比例称取银粉 88.5份， 有机载体 9.0份， 和所述氧化物刻 蚀剂粉 2.5份， 进行均匀混合和研磨处理， 得到所述晶硅太阳能电池正面导电浆 料。 [0209] 88.5 parts of silver powder, 9.0 parts of organic carrier, and 2.5 parts of the oxide etchant powder were weighed according to the above formula weight ratio, and uniformly mixed and polished to obtain a front conductive paste of the crystalline silicon solar cell. material.
[0210] 一种晶硅太阳能电池正面电极的制作方法， 包括以下步骤： [0210] A method for fabricating a front electrode of a crystalline silicon solar cell, comprising the steps of:
[0211] 通过丝网印制的方式， 将实施例 12中晶硅太阳能电池正面导电浆料印制在具有 绝缘膜的晶硅太阳能电池正面， 其太阳能电池背面丝网印制了背银和背铝， 然 后于 770°C进行烧结， 得到所述的晶硅太阳能电池正面电极。
[0212] 测试获得的所述电池片的效率， I-V测试结果汇总在表 1中。 [0211] 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. [0212] The efficiency of the obtained cell sheets was tested, and the IV test results are summarized in Table 1.
[0213] 实施例 13 Example 13
[0214] 一种晶硅太阳能电池正面导电浆料， 按总重量为 100份计算， 包括如下配方比 例的组分： 银粉 88.5份； 有机载体 9.0份； 氧化物刻蚀剂 2.5份。 [0214] 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.
[0215] 其中， 以所述氧化物刻蚀剂摩尔总量为 100%计， 包括以下组分： [0215] wherein, the total amount of the oxide etchant is 100%, including the following components:
[0216] Pb0 12%、 Te0 2 42%、 Li 20 6%、 Si0 2 12%、 B 20 3 2%、 Bi 20 3 4%、 ZnO 2%Pb0 12%, Te0 2 42%, Li 2 0 6%, Si0 2 12%, B 2 0 3 2%, Bi 2 0 3 4%, ZnO 2%
、 WO 3 20%。 , WO 3 20%.
[0217] 所述氧化物刻蚀剂的制备方法为： 按照以上所述的比例称取氧化物刻蚀剂原料 并且进行均匀混合； 将所述的均匀混合的氧化物刻蚀剂原料放入加热炉加热至 1 000°C, 并在 1000°C下保温 120min， 得到熔融的液态氧化物刻蚀剂； 将所述的熔 融的液态氧化物刻蚀剂倒入常温 (25°C)水中冷却得到氧化物刻蚀剂颗粒； 将所述 的氧化物刻蚀剂颗粒置于干燥箱中在 80°C烘干； 将所述的干燥的氧化物刻蚀剂颗 粒置于球磨机中进行研磨得到粒度 0.5~7.(Vm的氧化物刻蚀剂粉， 然后置于干燥 箱中在 100°C烘干得到干燥的氧化物刻蚀剂粉。 [0217] 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.
[0218] 以所述有机载体重量为 100%计， 所述有机载体含有以下组分： 松油醇、 十二 醇醋、 萜烯三者的混合物 70% ; 乙基纤维素 10%、 松香树脂 15%、 聚酰胺蜡 5%。 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.
[0219] 所述晶硅太阳能电池正面导电浆料的制备方法包括以下步骤： [0219] The method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
[0220] 按照以上所述配方重量比例称取银粉 88.5份， 有机载体 9.0份， 和所述氧化物刻 蚀剂粉 2.5份， 进行均匀混合和研磨处理， 得到所述晶硅太阳能电池正面导电浆 料。 [0220] 88.5 parts of silver powder, 9.0 parts of organic carrier, and 2.5 parts of the oxide etchant powder were weighed according to the above formula weight ratio, and uniformly mixed and polished to obtain a front conductive paste of the crystalline silicon solar cell. material.
[0221] 一种晶硅太阳能电池正面电极的制作方法， 包括以下步骤： [0221] A method for fabricating a front electrode of a crystalline silicon solar cell, comprising the steps of:
[0222] 通过丝网印制的方式， 将实施例 13中晶硅太阳能电池正面导电浆料印制在具有 绝缘膜的晶硅太阳能电池正面， 其太阳能电池背面丝网印制了背银和背铝， 然 后于 800°C进行烧结， 得到所述的晶硅太阳能电池正面电极。 [0222] 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.
[0223] 测试获得的所述电池片的效率， I-V测试结果汇总在表 1中。 The efficiency of the obtained cell sheets was tested, and the I-V test results are summarized in Table 1.
[0224] 实施例 14 Example 14
[0225] 一种晶硅太阳能电池正面导电浆料， 按总重量为 100份计算， 包括如下配方比 例的组分： 银粉 88.5份； 有机载体 9.0份； 氧化物刻蚀剂 2.5份。
[0226] 其中， 以所述氧化物刻蚀剂摩尔总量为 100%计， 包括以下组分： [0225] 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:
[0227] PbO： 10%、 TeO 2 30%、 Li 20 6%、 Si0 2 33%、 B 20 3 2%、 Bi 20 3 4%、 ZnO 2%、 WO 3 13%。 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%.
[0228] 所述氧化物刻蚀剂的制备方法为： 按照以上所述的比例称取氧化物刻蚀剂原料 并且进行均匀混合； 将所述的均匀混合的氧化物刻蚀剂原料放入加热炉加热至 1 000°C, 并在 1000°C下保温 120min， 得到熔融的液态氧化物刻蚀剂； 将所述的熔 融的液态氧化物刻蚀剂倒入常温 (25°C)水中冷却得到氧化物刻蚀剂颗粒； 将所述 的氧化物刻蚀剂颗粒置于干燥箱中在 80°C烘干； 将所述的干燥的氧化物刻蚀剂颗 粒置于球磨机中进行研磨得到粒度 0.5~7.(Vm的氧化物刻蚀剂粉， 然后置于干燥 箱中在 100°C烘干得到干燥的氧化物刻蚀剂粉。 [0228] 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.
[0229] 以所述有机载体重量为 100%计， 所述有机载体含有以下组分： 松油醇、 十二 醇醋、 萜烯三者的混合物 70% ; 乙基纤维素 10%、 松香树脂 15%、 聚酰胺蜡 5%。 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.
[0230] 所述晶硅太阳能电池正面导电浆料的制备方法包括以下步骤： [0230] The method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
[0231] 按照以上所述配方重量比例称取银粉 88.5份， 有机载体 9.0份， 和所述氧化物刻 蚀剂粉 2.5份， 进行均匀混合和研磨处理， 得到所述晶硅太阳能电池正面导电浆 料。 [0231] 88.5 parts of silver powder, 9.0 parts of organic carrier, and 2.5 parts of the oxide etchant powder were weighed according to the above formula weight ratio, and uniformly mixed and polished to obtain a front conductive paste of the crystalline silicon solar cell. material.
[0232] 一种晶硅太阳能电池正面电极的制作方法， 包括以下步骤： [0232] A method for fabricating a front electrode of a crystalline silicon solar cell, comprising the steps of:
[0233] 通过丝网印制的方式， 将实施例 14中晶硅太阳能电池正面导电浆料印制在具有 绝缘膜的晶硅太阳能电池正面， 其太阳能电池背面丝网印制了背银和背铝， 然 后于 800°C进行烧结， 得到所述的晶硅太阳能电池正面电极。 测试获得的所述电 池片的效率， I- V测试结果汇总在表 1中。 [0233] 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.
[0234] 实施例 15 Example 15
[0235] 一种晶硅太阳能电池正面导电浆料， 按总重量为 100份计算， 包括如下配方比 例的组分： 银粉 88.5份； 有机载体 9.0份； 氧化物刻蚀剂 2.5份。 [0235] 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.
[0236] 其中， 以所述氧化物刻蚀剂摩尔总量为 100%计， 包括以下组分： [0236] wherein, the total amount of the oxide etchant is 100%, including the following components:
[0237] PbO 8%、 Te0 2 37%、 Li 20 6%、 Si0 2 31%、 B 20 3 2%、 Bi 20 3 8%、 ZnO 2%PbO 8%, Te0 2 37%, Li 2 0 6%, Si0 2 31%, B 2 0 3 2%, Bi 2 0 3 8%, ZnO 2%
、 WO 3 6%。 , WO 3 6%.
[0238] 所述氧化物刻蚀剂的制备方法为： 按照以上所述的比例称取氧化物刻蚀剂原料
并且进行均匀混合； 将所述的均匀混合的氧化物刻蚀剂原料放入加热炉加热至 1 000°C, 并在 1000°C下保温 120min， 得到熔融的液态氧化物刻蚀剂； 将所述的熔 融的液态氧化物刻蚀剂倒入常温 (25°C)水中冷却得到氧化物刻蚀剂颗粒； 将所述 的氧化物刻蚀剂颗粒置于干燥箱中在 80°C烘干； 将所述的干燥的氧化物刻蚀剂颗 粒置于球磨机中进行研磨得到粒度 0.5~7.(Vm的氧化物刻蚀剂粉， 然后置于干燥 箱中在 100°C烘干得到干燥的氧化物刻蚀剂粉。 [0238] 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.
[0239] 以所述有机载体重量为 100%计， 所述有机载体含有以下组分： 松油醇、 十二 醇醋、 萜烯三者的混合物 70% ; 乙基纤维素 10%、 松香树脂 15%、 聚酰胺蜡 5%。 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.
[0240] 所述晶硅太阳能电池正面导电浆料的制备方法包括以下步骤： [0240] The method for preparing the front side conductive paste of the crystalline silicon solar cell comprises the following steps:
[0241] 按照以上所述配方重量比例称取银粉 88.5份， 有机载体 9.0份， 和所述氧化物刻 蚀剂粉 2.5份， 进行均匀混合和研磨处理， 得到所述晶硅太阳能电池正面导电浆 料。 [0241] 88.5 parts of silver powder, 9.0 parts of organic carrier, and 2.5 parts of the oxide etchant powder were weighed according to the above formula weight ratio, and uniformly mixed and polished to obtain a front conductive paste of the crystalline silicon solar cell. material.
[0242] 一种晶硅太阳能电池正面电极的制作方法， 包括以下步骤： [0242] A method for fabricating a front electrode of a crystalline silicon solar cell, comprising the steps of:
[0243] 通过丝网印制的方式， 将实施例 15中晶硅太阳能电池正面导电浆料印制在具有 绝缘膜的晶硅太阳能电池正面， 其太阳能电池背面丝网印制了背银和背铝， 然 后于 800°C进行烧结， 得到所述的晶硅太阳能电池正面电极。 测试获得的所述电 池片的效率， I- V测试结果汇总在表 1中。 [0243] 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.
[0244] 对比例 [0244] Comparative example
[0245] 将市场上广泛使用的一种晶硅太阳能电池正面导电浆料 PVM1B丝网印制在和 实施例具有完全相同的绝缘膜的晶硅太阳能电池正面， 其太阳能电池背面丝网 印制了背银和背铝， 然后加热到 800°C进行烧结， 得到所述的晶硅太阳能电池正 面电极， 然后测试所述电池片的效率， I-V测试结果汇总在表 1中。 [0245] 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.
[0246] 性能测试： [0246] Performance test:
[0247] (l)I-V测试 (1) I-V test
[0248] 将实施例 1~15的电池片和对比例的电池片在 HALM IV测试仪上进行了 I-V测试 ， 测试结果如表 1所示。 [0248] The cell sheets of Examples 1 to 15 and the cell sheets of Comparative Examples were subjected to I-V test on a HALM IV tester, and the test results are shown in Table 1.
[0249] (2)拉力测试 (2) Tensile test
[0250] 将焊带焊接到主栅上 180度拉伸测试拉力， 主栅宽度是 0.7mm， 将 0.9mm宽的焊
带焊接到主栅上， 焊带宽度为 0.9mm， 厚度为 0.23mm， 焊带材料是 96.5%Sn3.5% Ag。 图 5是 180度拉伸测试示意图， 具体是先将焊带 800焊接于主栅表面， 然后通 过第一固定螺栓 901和第二固定螺栓 902将晶体硅电池片 100固定于拉伸机 900上 ， 按照拉力 F的方向进行拉力测试。 拉力测试结果如表 1所示。 [0250] 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.
[0251] 表 1实施例 1~15及对比例获得的晶硅太阳能电池性能测试数据统计 Table 1 Example 1 to 15 and comparative examples obtained crystal silicon solar cell performance test data statistics
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[表 1] [Table 1]
[0252] 从表 1可知， 与对比例相比较， 实施例 1-8的太阳能电池片具有转化率高， R JS ， 拉力高的优点， 说明实施例 1-8使用的氧化物刻蚀剂具有优越的刻蚀性能， 它 不但有效的润湿烧结了银粉， 而且有效的刻蚀掉了太阳能电池片表面的绝缘膜 ， 使银电极和太阳能电池片表面形成良好的欧姆接触， 从而使太阳能电池片具 有转换效率高， 接触电 ER S低， 拉力高的特点。 实施例 1-8使用的氧化物刻蚀刻 剂中的 W0 3和 PbO的摩尔比例在 0.5:35~5: 20范围内、 且 WO 3和 Li 20的摩尔比例 在 0.5:20~5: 9范围内， 其独特的氧化物组分比例使得其氧化物刻蚀剂在烧结过 程中能够溶解足够的银， 能够充分刻蚀透电池片表面的绝缘层但是又不过分腐 蚀硅电池片， 使得银电极和硅片不但形成很好的欧姆接触， 同时具有很好的附 着力。 实施例 9-15的太阳能电池片转换率低于对比例的转换率， 也低于实施例 1- 8的电池片转换率， 其串联电阻 (R S)W显高于实施例 1-8 , 这是因为其使用的氧化 物刻蚀剂成分比例不同导致的。 实施例 9电池片转换率低是由于其使用的氧化物 刻蚀剂不含 B 20 3 , 因为其它成分与实施例 8相同， 显示 B 20 3对于本发明所述的 氧化物刻蚀剂性能影响很大， 必须保持合适的 B 20 3比例。 实施例 10的转换率低 是由于其氧化物刻蚀剂中的 Bi 20 3含量太高， 本发明所述的氧化物刻蚀剂中 Bi 20 3摩尔比例含量要保持在 10%以下， 过量的 Bi 20 3会导致在烧结过程中电池片被过 分腐蚀， 从而导致电池片效率降低。 实施例 11-15电池片效率低于对比例电池片 效率， 也低于实施例 1-8电池片效率， 这是由于其使用的氧化物刻蚀剂中 \¥0 3含
量太高（摩尔比例 6-20%）和 PbO（摩尔比例 8-17%）含量太低导致的， 本发明所述的 氧化物刻蚀剂中 PbO的摩尔比例在 20-35%， 低于 20%会导致烧结过程中电池片表 面的绝缘层不能被完全腐蚀， 银电极不能和硅片形成良好的欧姆接触； 本发明 所述的氧化物刻蚀剂中 WO 3的摩尔比例在 5%以下， 如果 WO 3的摩尔比例在 5% 以上， 会导致烧结性能降低。 As is apparent from 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. In the range, 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.
[0253] 以上所述仅为本发明的较佳实施例而已， 并不用以限制本发明， 凡在本发明的 精神和原则之内所作的任何修改、 等同替换和改进等， 均应包含在本发明的保 护范围之内。
The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalents, and improvements made within the spirit and scope of the present invention should be included in the present invention. Within the scope of protection of the invention.
Claims
[权利要求 1] 一种晶硅太阳能电池正面导电浆料， 其特征在于， 按照重量份为 100 计， 所述晶硅太阳能电池正面导电浆料包括以下原料组分： 金属粉 80.0~93.0份； [Claim 1] A front side conductive paste of a crystalline silicon solar cell, wherein the front side conductive paste of the crystalline silicon solar cell comprises the following raw material components in terms of 100 parts by weight: metal powder 80.0-93.0 parts;
有机载体 6.0~15.0份； Organic carrier 6.0~15.0 parts;
氧化物刻蚀剂 1.0~5.0份； Oxide etchant 1.0~5.0 parts;
其中， 所述氧化物刻蚀剂至少含有 PbO、 W0 3 Li 20， 且所述 WO 3 和 PbO的摩尔比例为 0.5:35~5:20， 所述 WO 3和 Li 2 0的摩尔比例为 0.5:20~5:9。 Wherein, the oxide etchant contains at least PbO, W0 3 Li 2 0, and the molar ratio of the WO 3 and PbO is 0.5:35 to 5:20, and the molar ratio of the WO 3 and Li 2 0 is 0.5:20~5:9.
[权利要求 2] 如权利要求 1所述的晶硅太阳能电池正面导电浆料， 其特征在于， 以 所述氧化物刻蚀剂摩尔量为 100%计， 所述氧化物刻蚀剂包括以下组 分： [Claim 2] The front surface conductive paste of a crystalline silicon solar cell according to claim 1, wherein the oxide etchant comprises the following group in terms of a molar amount of the oxide etchant of 100% Minute:
PbO 20-35%； PbO 20-35%;
Te0 2 15-40%； Te0 2 15-40%;
Li 20 9.0-20.0%； Li 2 0 9.0-20.0%;
Si0 2 15.0-40.0%； Si0 2 15.0-40.0%;
Bi 20 3 0.5-9.0%； Bi 2 0 3 0.5-9.0%;
ZnO 0.5-15.0%； ZnO 0.5-15.0%;
B 20 3 0.5-10.0%； B 2 0 3 0.5-10.0%;
W03 0.5-5.0%； W03 0.5-5.0%;
添加元素的氧化物 0~5.0%。 Add the oxide of the element 0~5.0%.
[权利要求 3] 如权利要求 2所述的晶硅太阳能电池正面导电浆料， 其特征在于， 所 述添加元素的氧化物中添加元素为钛、 招、 银、 铬、 钪、 铜、 铌、 钒 、 钠、 钽、 锶、 溴、 钴、 铪、 镧、 钇、 镱、 铁、 钡、 锰、 钨、 镍、 锡 、 砷、 锆、 钾、 磷、 铟、 镓、 锗中的一种或者两种及以上。 [Claim 3] The front side conductive paste of the crystalline silicon solar cell according to claim 2, wherein the additive element in the oxide of the additive element is titanium, silver, silver, chromium, bismuth, copper, bismuth, One of vanadium, sodium, niobium, tantalum, bromine, cobalt, niobium, tantalum, niobium, tantalum, iron, niobium, manganese, tungsten, nickel, tin, arsenic, zirconium, potassium, phosphorus, indium, gallium, antimony or Two or more.
[权利要求 4] 如权利要求 1或 2所述的晶硅太阳能电池正面导电浆料， 其特征在于， 所述氧化物刻蚀剂为晶体、 非晶体中的至少一种。 [Claim 4] The front side conductive paste of the crystalline silicon solar cell according to claim 1 or 2, wherein the oxide etchant is at least one of a crystal and an amorphous.
[权利要求 5] 如权利要求 1所述的晶硅太阳能电池正面导电浆料， 其特征在于， 所
述金属粉为银、 金、 铂、 铜、 铁、 镍、 锌、 钛、 钴、 铬、 招、 锰、 钯 、 铑中的至少一种。 [Claim 5] The front side conductive paste of the crystalline silicon solar cell according to claim 1, wherein The metal powder is at least one of silver, gold, platinum, copper, iron, nickel, zinc, titanium, cobalt, chromium, molybdenum, manganese, palladium, and rhodium.
[权利要求 6] 如权利要求 1所述的晶硅太阳能电池正面导电浆料， 其特征在于， 所 述金属粉为银包覆的铜、 铁、 镍、 锌、 钛、 钴、 铬、 招、 锰中的至少 一种， 其中， 银包覆层的厚度为 10~50nm。 [Claim 6] The front side conductive paste of the crystalline silicon solar cell according to claim 1, wherein the metal powder is silver-coated copper, iron, nickel, zinc, titanium, cobalt, chromium, and At least one of manganese, wherein the silver coating layer has a thickness of 10 to 50 nm.
[权利要求 7] 如权利要求 1所述的晶硅太阳能电池正面导电浆料， 其特征在于， 所 述金属粉为非银包覆的金属粉和银包覆的金属粉的混合体， 其中， 所 述非银包覆的金属粉与银包覆的金属粉的重量比为 5/95~95/5， 所述 非银包覆的金属粉为银、 金、 销、 铜、 铁、 辕、 铸、 钦、 钻、 絡、 招 、 锰、 ffi、 铑中的至少一种； 所述银包覆的金属粉为铜、 铁、 镍、 锌 、 钛、 钴、 铬、 招、 锰中的至少一种， 所述银包覆层的厚度为 10~200 nm。 [Claim 7] The front side conductive paste of the crystalline silicon solar cell according to claim 1, wherein the metal powder is a mixture of a non-silver coated metal powder and a silver coated metal powder, wherein The weight ratio of the non-silver-coated metal powder to the silver-coated metal powder is 5/95 to 95/5, and the non-silver-coated metal powder is silver, gold, pin, copper, iron, bismuth, At least one of casting, chin, diamond, lanthanum, lanthanum, manganese, ffi, lanthanum; the silver-coated metal powder is at least one of copper, iron, nickel, zinc, titanium, cobalt, chromium, smear, manganese In one case, the silver coating layer has a thickness of 10 to 200 nm.
[权利要求 8] 如权利要求 i所述的晶硅太阳能电池正面导电浆料， 其特征在于， 所 述有机载体包括有机溶剂、 聚合物、 润湿分散剂、 触变剂、 其他功能 助剂； [Claim 8] The front side conductive paste of the crystalline silicon solar cell according to claim 1, wherein the organic carrier comprises an organic solvent, a polymer, a wetting and dispersing agent, a thixotropic agent, and other functional additives;
以所述有机载体重量为 100份计， 有机溶剂 50~95份； 聚合物 1~40份； 润湿分散剂 0.1~10份； 触变剂 1~20份； 其他功能助剂 0.1~20份。 50 parts to 95 parts by weight of the organic vehicle; 1 to 40 parts of polymer; 0.1 to 10 parts of wetting and dispersing agent; 1 to 20 parts of thixotropic agent; 0.1 to 20 parts of other functional additives .
[权利要求 9] 如权利要求 8所述的晶硅太阳能电池正面导电浆料， 其特征在于， 所 述有机溶剂为松油醇、 乙二醇丁醚醋酸酯、 乙二醇乙醚醋酸酯、 十二 醇酯、 二乙二醇丁醚、 三乙二醇丁醚、 三丙二醇甲醚、 萜烯类中的至 少一种； [Claim 9] The front side conductive paste of the crystalline silicon solar cell according to claim 8, wherein the organic solvent is terpineol, ethylene glycol butyl ether acetate, ethylene glycol ethyl ether acetate, and ten At least one of a glycol ester, diethylene glycol butyl ether, triethylene glycol butyl ether, tripropylene glycol methyl ether, and terpenes;
所述聚合物选自乙基纤维素、 甲基纤维素、 纤维素及其他衍生物、 丙 烯酸树脂、 醇酸树脂、 聚酯树脂中的至少一种； The polymer is selected from at least one of ethyl cellulose, methyl cellulose, cellulose and other derivatives, acrylic resins, alkyd resins, and polyester resins;
所述润湿分散剂选自脂肪酸、 脂肪酸的酰胺衍生物、 脂肪酸的酯类衍 生物、 聚乙烯蜡、 聚乙二醇中的一种或者两种以上混合物； 所述触变剂选自氢化蓖麻油衍生物、 聚酰胺蜡、 聚脲、 气相二氧化硅 中的至少一种； The wetting and dispersing agent is selected from the group consisting of a fatty acid, an amide derivative of a fatty acid, an ester derivative of a fatty acid, a polyethylene wax, a polyethylene glycol, or a mixture of two or more; the thixotropic agent is selected from the group consisting of hydrazine hydride At least one of sesame oil derivative, polyamide wax, polyurea, fumed silica;
所述其他功能助剂选自聚甲基苯基硅氧烷、 聚苯基硅氧烷、 邻苯二甲
酸酯、 邻苯二甲酸二乙酯、 邻苯二甲酸二丁酯、 微晶蜡、 聚二甲基硅 氧烷、 聚乙烯醇缩丁醛、 聚醚聚酯改性有机硅氧烷、 烷基改性有机硅 氧烷中的一种或者两种以上。 The other functional auxiliary is selected from the group consisting of polymethylphenylsiloxane, polyphenylsiloxane, and phthalate Acid ester, diethyl phthalate, dibutyl phthalate, microcrystalline wax, polydimethylsiloxane, polyvinyl butyral, polyether polyester modified organosiloxane, alkane One or more of the group-modified organosiloxanes.
[权利要求 10] 如权利要求 1~9任一项所述的晶硅太阳能电池正面导电浆料的制备方 法， 其特征在于， 至少包括以下步骤： [Claim 10] The method for preparing a front side conductive paste of a crystalline silicon solar cell according to any one of claims 1 to 9, characterized in that it comprises at least the following steps:
步骤 S01.将氧化物刻蚀剂原料组分进行熔融得到氧化物刻蚀剂熔液， 对所述熔液进行骤冷处理， 得到氧化物刻蚀剂颗粒， 并经过破碎处理 获得粒径在 0.1~5.(Vm的氧化物刻蚀剂粉末； Step S01. Melt the oxide etchant raw material component to obtain an oxide etchant melt, and quench the molten liquid to obtain an oxide etchant particle, and obtain a particle size of 0.1~ by crushing treatment. 5. (Vm oxide etchant powder;
步骤 S02.将有机载体原料置于 40~100°C环境中进行混合处理， 得到有 机载体； 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;
步骤 S03.将金属粉与步骤 S01得到的氧化物刻蚀剂粉末、 步骤 S02得到 的有机载体三者进行混料处理， 获得晶硅太阳能电池正面导电浆料。 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 conductive paste of the crystalline silicon solar cell.
[权利要求 11] 如权利要求 10所述的晶硅太阳能电池正面导电浆料的制备方法， 其特 征在于， 所述骤冷处理为水冷处理或者冷空气处理。 [Claim 11] The method for producing a front side conductive paste of a crystalline silicon solar cell according to claim 10, wherein the quenching treatment is water cooling treatment or cold air treatment.
[权利要求 12] 一种晶硅太阳能电池正面电极的制作方法， 其特征在于， 至少包括以 下步骤： [Claim 12] A method for fabricating a front electrode of a crystalline silicon solar cell, comprising the steps of:
提供表面叠设有绝缘膜的晶体硅半导体元件； Providing a crystalline silicon semiconductor component having an insulating film on its surface;
通过印制的方式将如权利要求 1~9任一项所述的晶硅太阳能电池正面 导电浆料印制于所述绝缘膜表面， 依次进行干燥、 烧结、 冷却处理， 得到晶硅太阳能电池正面电极。 The surface conductive paste of the crystalline silicon solar cell according to any one of claims 1 to 9 is printed on the surface of the insulating film by printing, and sequentially dried, sintered, and cooled to obtain a front surface of the crystalline silicon solar cell. electrode.
[权利要求 13] 如权利要求 12所述的晶硅太阳能电池正面电极的制作方法， 其特征在 于， 所述烧结温度为 700~820°C; 和 /或所述干燥温度为 80~400°C。 [Claim 13] The method for fabricating a front surface electrode of a crystalline silicon solar cell according to claim 12, wherein the sintering temperature is 700 to 820 ° C; and/or the drying temperature is 80 to 400 ° C .
[权利要求 14] 如权利要求 12所述的晶硅太阳能电池正面电极的制作方法， 其特征在 于， 所述绝缘膜为氮化硅膜、 氧化钛膜、 氧化铝膜、 氧化硅膜中的至 少一种。 The method of fabricating a front surface electrode of a crystalline silicon solar cell according to claim 12, wherein the insulating film is at least one of a silicon nitride film, a titanium oxide film, an aluminum oxide film, and a silicon oxide film. One.
[权利要求 15] 一种晶硅太阳能电池， 其特征在于， 所述晶硅太阳能电池采用如权利 要求 12~ 14任一项所述的晶硅太阳能电池正面电极的制作方法制作的 晶硅太阳能电池正面电极。
[Claim 15] A crystalline silicon solar cell, wherein the crystalline silicon solar cell is produced by using the method for fabricating a front surface electrode of a crystalline silicon solar cell according to any one of claims 12 to 14 Front electrode.
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| CN105489710A (en) * | 2016-01-22 | 2016-04-13 | 四川银河星源科技有限公司 | Production technology of all-back electrode solar battery |
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