CN106098139A - Electrode constituent, use its electrode manufactured and solaode - Google Patents

Electrode constituent, use its electrode manufactured and solaode Download PDF

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Publication number
CN106098139A
CN106098139A CN201610197376.5A CN201610197376A CN106098139A CN 106098139 A CN106098139 A CN 106098139A CN 201610197376 A CN201610197376 A CN 201610197376A CN 106098139 A CN106098139 A CN 106098139A
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methyl
electrode
weight
acrylate
electrode constituent
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CN106098139B (en
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金东奭
金周熙
朴永起
申东�
申东一
郑锡铉
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Changzhou Fusion New Material Co Ltd
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Samsung SDI Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/14—Conductive material dispersed in non-conductive inorganic material
    • H01B1/16—Conductive material dispersed in non-conductive inorganic material the conductive material comprising metals or alloys
    • 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
    • H01L31/02—Details
    • H01L31/0224—Electrodes
    • H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
    • H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
    • 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
    • H01L31/04—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 adapted as photovoltaic [PV] conversion devices
    • H01L31/06—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 adapted as photovoltaic [PV] conversion devices characterised by potential barriers
    • H01L31/068—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 adapted as photovoltaic [PV] conversion devices characterised by potential barriers the potential barriers being only of the PN homojunction type, e.g. bulk silicon PN homojunction solar cells or thin film polycrystalline silicon PN homojunction solar cells
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/547—Monocrystalline silicon PV cells

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
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  • Life Sciences & Earth Sciences (AREA)
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  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Sustainable Energy (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Conductive Materials (AREA)
  • Photovoltaic Devices (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The present invention provides a kind of electrode constituent, use it to manufacture electrode and solaode, wherein electrode constituent comprises: conductive powder；Frit；And comprise organic bond, multifunctional (methyl) acrylate compounds and the organic vehicle of solvent, the molecular weight of wherein said multifunctional (methyl) acrylate compounds is 200 to 500, and it is to exist with the amount of 0.15 weight % to 2 weight % in terms of 100 weight % of described electrode constituent.The electrode constituent of the present invention has fabulous continuous impressionability and can increase substrate and the adhesion strength of electrode pattern and improve the efficiency of solaode.

Description

Electrode constituent, use its electrode manufactured and solaode
Technical field
Embodiment relates to a kind of electrode constituent, a kind of electrode using it to manufacture and a kind of solar-electricity Pond.
Background technology
Solaode uses the photovoltaic effect of the p-n junction that the converting photons of daylight becomes electricity to produce Electric energy.In solar cells, front electrode and back electrode are respectively formed in the semiconductor die with p-n junction On sheet or the front surface of substrate and rear surface.Then, by entering the day photo-induced p-n of semiconductor wafer Knot photovoltaic effect, and by p-n junction photovoltaic effect produce electronics by electric current via electricity Pole provides outside.
The electrode of solaode can be by being coated with, patterning and fire (firing) electrode constituent And be formed on the surface of wafer with predetermined pattern.The transformation efficiency of solaode is known by with lower section Formula is improved: modified electrode and the contact property of substrate, therefore minimizes contact resistance (Rc) and series electrical Resistance (Rs)；Or with organic material, the pattern line-width of screen mask is adjusted to less, and therefore formed thin Line and increase short circuit current (Isc).But, the method by the live width of screen mask reduction electrode pattern can Can cause series resistance (Rs) increase and make the continuous impressionability of fine pattern degenerate.
During being manufactured into the process of final module, the electrode pattern on substrate should via band each other Connect and be attached on substrate, but when electrode pattern is from substrate desquamation, in fact it could happen that electrical connection shortcoming, And reliability may be made to degenerate.It is therefore desirable to be able to guarantee electrode figure during the formation of electrode pattern The impressionability of case and improve the electrode constituent of its adhesion strength.
Summary of the invention
One embodiment provides a kind of electrode constituent, and it has fabulous continuous impressionability and can Increase the adhesion strength of substrate and electrode pattern, therefore improve efficiency and the reliability of solaode.
Another embodiment provides a kind of electrode using described electrode constituent to manufacture.
Another embodiment provides a kind of solaode comprising described electrode.
The present invention can implement other embodiments.
One embodiment provides a kind of electrode constituent, and it comprises: conductive powder；Frit；Include Machine binding agent, multifunctional (methyl) acrylate compounds and the organic vehicle of solvent, wherein said many officials The molecular weight of energy (methyl) acrylate compounds is 200 to 500, and with 100 weights of electrode constituent Amount % meter, described multifunctional (methyl) acrylate compounds is to deposit to the amount of 2 weight % with 0.15 weight % ?.
Multifunctional (methyl) acrylate compounds can be by two (methyl) acrylate compounds, three (methyl) Acrylate compounds, four (methyl) acrylate compounds and its mixture are selected.
Multifunctional (methyl) acrylate compounds can be selected by the following: trimethylolpropane tris (methyl) acrylate (trimethylolpropane tri (meth) acrylate), ethylene glycol bisthioglycolate (methyl) acrylic acid Ester (ethylene glycoldi (meth) acrylate), triethylene glycol two (methyl) acrylate (triethylene Glycol di (meth) acrylate), butanediol two (methyl) acrylate (butanediol Di (meth) acrylate), hexanediol two (methyl) acrylate (hexanedioldi (meth) acrylate), season Penta tetrol three (methyl) acrylate (pentaerythritol tri (meth) acrylate), trihydroxy methyl three (methyl) Acrylate (trimethylol tri (meth) acrylate), tetramethylolmethane four (methyl) acrylate (pentaerythritol tetra (meth) acrylate) and its mixture.
In terms of 100 weight % of electrode constituent, multifunctional (methyl) acrylate compounds can be with 0.15 Weight % exists to the amount of 2 weight %.
The molecular weight of multifunctional (methyl) acrylate compounds can be 250 to 400.
Multifunctional (methyl) acrylate compounds of electrode constituent can be at 200 DEG C to 400 DEG C at warm Remain in after reason in gained film.
Frit can be selected by bismuth class frit, lead class frit and its mixture.
Bismuth class frit can be bismuth (Bi)-tellurium (Te) frit.Bismuth (Bi)-tellurium (Te) frit 20 moles of % to 80 mole of % tellurium oxides and 20 moles of % to 80 mole of % bismuth oxide can be comprised.
Electrode constituent can comprise: 60 weight % are to 95 weight % conductive powders；0.5 weight % is to 20 Weight % frit；And 1 weight % to 30 weight % organic vehicle.
Electrode constituent can comprise by least one selected in the following: surface conditioning agent, dispersion Agent, thixotropic agent, plasticiser, viscosity stabiliser, defoamer, pigment, ultraviolet (UV) stabilizer, anti- Oxidant, coupling agent etc..
Another embodiment provides a kind of electrode using described electrode constituent to manufacture.
Another embodiment provides a kind of solaode comprising described electrode.
Described electrode constituent has fabulous continuous impressionability and can increase substrate and electrode pattern Adhesion strength and improve the efficiency of solaode.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the structure showing the solaode according to an embodiment.
Detailed description of the invention
The present invention will be described more fully hereinafter with reference to the accompanying drawings, illustrate this in the drawings Bright exemplary embodiments.As skilled in the art will recognize, can be in a variety of ways Embodiment described by amendment, it is all to carry out without departing from the spirit or scope of the present invention.
In the accompanying drawings, for clarity sake, the thickness in amplification layer, film, panel, region etc..Say at entire chapter In bright book, identical graphic component symbol represents similar elements.Should be understood that when by an element, as layer, Film, region or substrate be referred to as another element " on " time, it can be directly at another element described On, maybe can also there is insertion element.By contrast, it is referred to as " directly existing " another element when element On " " time, there is not insertion element.
One embodiment provides a kind of electrode constituent, and it comprises: conductive powder；Frit；And have Machine mediator, it comprises organic bond, multifunctional (methyl) acrylate compounds and solvent.
Hereinafter, describe the present invention.
Described electrode constituent comprises metal dust as conductive powder.Described metal dust can comprise silver (Ag), gold (Au), palladium (Pd), platinum (Pt), ruthenium (Ru), rhodium (Rh), osmium (Os), iridium (Ir), Rhenium (Re), titanium (Ti), niobium (Nb), tantalum (Ta), aluminum (Al), copper (Cu), nickel (Ni), molybdenum (Mo), vanadium (V), zinc (Zn), magnesium (Mg), yttrium (Y), cobalt (Co), zirconium (Zr), ferrum (Fe), Tungsten (W), stannum (Sn), chromium (Cr), manganese (Mn) etc..
The granularity of described conductive powder can be nanoscale or micron order.For example, described conductive powder Granularity can be tens to hundreds of nanometer or a few to tens of microns.In other embodiments, described conduction Powder can be to have varigrained two kinds or more than the mixture of two kinds of argentum powder.
Described conductive powder can have spherical, slice-shaped or amorphous shape of particle.Described conducting powder The mean particle diameter (D50) at end can be 0.1 micron to 10 microns, and such as 0.5 micron micro-to 5 Rice.Mean particle diameter can under room temperature (24 DEG C to 25 DEG C) via ultrasonic Treatment by conductive powder It is scattered in isopropanol (isopropyl alcohol；IPA), in after 3 minutes, such as model 1064D (west is used Laeis GmbH (CILAS Co., Ltd.)) equipment measures.In the range of this mean particle diameter, Described constituent can provide low contact resistance and low line resistance.
In terms of 100 weight % of electrode constituent, conductive powder can be with the amount of 60 weight % to 95 weight % Exist.In this range, be possible to prevent transformation efficiency due to resistance increase and degenerate, and also can in case Only formed by the hard pastel caused that relatively reduces of organic vehicle.In one embodiment, conductive powder Can exist with the amount of 70 weight % to 90 weight %.
Frit in order to strengthen the adhesion strength between conductive powder and wafer or substrate, and can pass through erosion Carve anti-reflecting layer and melted conductive powder forms silver crystal grain in emitter region, in order to firing at electrode paste Contact resistance is reduced during process.Additionally, during sintering process, frit can be softened and can To reduce firing temperature.
When the area of increase solaode is to improve solar battery efficiency, there is solaode Contact resistance may increase probability.Accordingly, it would be desirable to it is the most minimum to minimize the impact on p-n junction Change series resistance (Rs).Additionally, firing temperature can be with the increasing of the various wafers with different sheet resistance Add use and change in broad range.Enough heat stability are to tolerate extensive model to need frit to guarantee The firing temperature enclosed.
One in lead glass material that frit can be typically used in electrode constituent and lead-less glasses material Or more than one.
Frit can be selected by bismuth class frit, lead class frit and its mixture.
Frit can further include at least one by the element selected in the following: lead (Pb), tellurium (Te), Bismuth (Bi), lithium (Li), phosphorus (P), germanium (Ge), gallium (Ga), cerium (Ce), ferrum (Fe), silicon (Si), Zinc (Zn), tungsten (W), magnesium (Mg), caesium (Cs), strontium (Sr), molybdenum (Mo), titanium (Ti), stannum (Sn), indium (In), vanadium (V), barium (Ba), nickel (Ni), copper (Cu), sodium (Na), potassium (K), Arsenic (As), cobalt (Co), zirconium (Zr), manganese (Mn) and aluminum (Al).
Bismuth class frit can be bismuth (Bi)-tellurium (Te) frit.
Bismuth (Bi)-tellurium (Te) frit can comprise 20 moles of % to 80 mole of % tellurium oxides and 20 and rub % to 80 mole of % bismuth oxide of that.When using tellurium and bismuth in the range of described, can guarantee fabulous simultaneously Solaode transformation efficiency and the adhesion strength of electrode pattern.
Frit can be prepared by the oxide of element by any suitable method.For example, element Oxide can obtain in the following manner: with the oxide of estimated rate complex element, make mixture Melted, gains are quenched, and then pulverizes quenched product.Mixing can use ball milling Machine or planetary mill are carried out.Melted can carry out at 700 DEG C to 1300 DEG C, and quench can be Carry out under room temperature (24 DEG C to 25 DEG C).Pulverizing can use (but not limited to) disc mill or planetary mill Machine is carried out.
The mean particle diameter (D50) of frit can be 0.1 micron to 10 microns, and with electrode 100 weight % meters of constituent, it can exist with the amount of 0.5 weight % to 20 weight %.In this scope In, frit may insure that the fabulous adhesion strength of electrode pattern will not make the electrical feature of electrode move back simultaneously Change.
Frit can have spherical or amorphism.
In one embodiment, it is possible to use there is the two different kinds of frit of different transition temperature. For example, the transition temperature the first glass in the range of arriving less than or equal to 350 DEG C greater than or equal to 200 DEG C Glass material and the transition temperature the second frit in the range of arriving less than or equal to 550 DEG C higher than 350 DEG C are permissible Weight ratio mixing in the range of 1:0.2 to 1:1.
Organic vehicle can give suitable viscosity and rheological charactristics, for by with electrode constituent Inorganic component mechanical mixture be printed onto on electrode constituent.Organic vehicle comprises organic bond, many Sense (methyl) acrylate compounds and solvent.
Organic bond can be selected by acrylic resin or cellulosic resin.For example, Organic bond can be selected by the following: ethyl cellulose, ethylhydroxyethylcellulose, nitrification Cellulose, ethyl cellulose and the mixture of phenol resin (phenolic resin), alkyd resin, phenol Resin, acrylic resin, xylene resin, polybutene resinoid, polyester resin, ureas Resin, tripolycyanamide resinoid, vinyl acetate esters resin, wood rosin or the polymethacrylates of alcohol.
The weight average molecular weight (Mw) of organic bond can be 30,000 grams/mol to 200,000 Gram/mol, such as 40,000 gram/mol to 150,000 gram/mol.As weight average molecular weight (Mw) Time in the range of described, it is possible to obtain effect fabulous in terms of impressionability.
Multifunctional (methyl) acrylate compounds has at least two acrylate group or methacrylic acid Ester group.In other words, simple function (methyl) acrylate compounds can be got rid of in the present invention.
Multifunctional (methyl) acrylate compounds can be following in one or more: two (methyl) third Enoic acid ester compounds, three (methyl) acrylate compounds or four (methyl) acrylate compounds.Multifunctional (methyl) acrylate compounds can be following in one or more: trimethylolpropane tris (methyl) Acrylate, ethylene glycol bisthioglycolate (methyl) acrylate, triethylene glycol two (methyl) acrylate, butanediol two (methyl) acrylate, hexanediol two (methyl) acrylate, tetramethylolmethane three (methyl) acrylate, three Methylol three (methyl) acrylate or tetramethylolmethane four (methyl) acrylate.
The molecular weight of multifunctional (methyl) acrylate compounds can be 200 to 500, such as 250 to 400 Or 250 to 360.When the molecular weight of multifunctional (methyl) acrylate compounds is in the range of described, can With by assuring that gratifying impressionability continuously improves efficiency, and therefore minimize series resistance (Rs) increments.
Multifunctional (methyl) acrylate compounds at 200 DEG C to 400 DEG C after heat treatment not by thermosetting Change, and can remain in gained film.In other words, multifunctional (methyl) acrylate compounds is at Re Chu It is not thermally cured after reason but remains in gained film, and improvement substrate gluing to pattern can be played The effect of the property.
In terms of 100 weight % of electrode constituent, multifunctional (methyl) acrylate compounds can be with 0.15 Weight % exists to 2 weight %, the such as amount of 0.2 weight % to 2 weight %.When multifunctional (methyl) third When enoic acid ester compounds uses in the range of described, the continuous impressionability of electrode constituent can be changed Enter, and the adhesion strength between electrode pattern and substrate can be improved.
Solvent can be such as hexane, toluene, ester alcohol (2,2,4-trimethyl-1,3-pentanediol mono isobutyrate； 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate), methyl cellosolve, ethyl cellosolve, Ketohexamethylene, butyl cellosolve, fatty alcohol, butyl carbitol (butyl carbitol) (diethylene glycol mono butyl Base ether), dibutyl carbitol (DBC) (dibutyl ethylene glycol ether), acetate of butyl carbitol (diethylene glycol list Butyl ether acetas), propylene glycol monomethyl ether, hexanediol, terpineol, methyl ethyl ketone, benzyl alcohol, Gamma butyrolactone, ethyl lactate or a combination thereof.
In terms of 100 weight % of electrode constituent, organic vehicle can be with 1 weight % to 30 weight %, example Amount such as 5 weight % to 15 weight % exists.When organic vehicle uses in the range of described, electrode figure Adhesion strength between case and substrate can be improved, and may insure that fabulous continuous impressionability.
Electrode constituent can further include on demand typical additive with strengthen flowing property, working properties with And stability.It is steady that additive can comprise surface conditioning agent, dispersant, thixotropic agent, plasticiser, viscosity Determine agent, defoamer, pigment, ultraviolet (UV) stabilizer, antioxidant, coupling agent etc..Can be independent Or use these additives with its form of mixtures.
In terms of 100 weight % of electrode constituent, these additives can be with 0.1 weight % to 5 weight % Amount exists.This amount can change on demand.The amount of additive can consider electrode constituent print characteristics, Dispersion and storage stability select.
Another embodiment provides a kind of electrode formed by described electrode constituent.
Electrode can be by coating electrode constituent and then patterned and fire and with wafer table The form of the predetermined pattern on face is formed.The coating of electrode constituent can be (but are not limited to) screen printing Brush, indirect gravure, ROTARY SCREAM PRINTING, stripping etc..The electrode constituent of coating has predetermined pattern and thickness Degree is in 10 microns to 40 micrometer ranges.
Firing of patterned electrodes composition thing is described in detail in following solar battery process.
Another embodiment provides a kind of solaode comprising electrode.With reference to Fig. 1, illustrate according to one The solaode of embodiment.Fig. 1 is to show showing of the structure according to the solaode of an embodiment It is intended to.
With reference to Fig. 1, back electrode 210 and front electrode 230 are to comprise p by being printed on by electrode constituent Layer (or n-layer) 101 and n-layer (or p layer) 102 are as on the substrate 100 of emitter stage and the most right It is fired and is formed.For example, electrode constituent printing is coated on the dorsal part of substrate 100 and At 200 DEG C to 400 DEG C, it is carried out heat treatment 10 seconds to 60 seconds to carry out the previous system for back electrode Standby step.Herein, multifunctional (methyl) acrylate compounds be not thermally cured but Remain in electrode constituent.
Additionally, the previous preparation process for front electrode can be carried out in the following manner: electrode is formed Thing is printed on the front surface of substrate 100, and then makes it be dried.Then, can arrive at 400 DEG C At 980 DEG C, exactly 700 DEG C to 980 DEG C, fired electrodes constituent 30 seconds to 210 seconds is with electricity before being formed Pole and rear electrode.
There is provided following instance and comparative example to highlight one or being more than the feature of an embodiment, but should manage Solving, example and comparative example should not be construed as limiting the scope of embodiment, and comparative example also should not be construed as in reality Execute outside the scope of example.Furthermore, it is to be understood that embodiment is not limited to the tool described in example and comparative example Body details.
Example
Example 1 arrives comparative example 11 to example 7 and comparative example 1
Prepare electrode constituent as follows: at 60 DEG C, fully dissolve organic bond (Dow Chemical (Dow Chemical Company), STD4, Mw=50,000 gram/mol) and alcohol ester (Yi Shiman (Eastman)), be added to ball shape silver powder that mean particle diameter is 2.0 microns (AG-5-11F, Duo Wa High Seience Technology Co., Ltd. (Dowa Hightech Co.Ltd.)), bismuth-tellurium leadless glass powder (average Particle diameter is 1.0 microns) (ABT-1, Asahi Glass glass limited company), (methyl) acroleic acid esterification Compound, dispersant (Bi Ke (BYK)-102, Bi Ke chemistry (BYK-Chemie)) and thixotropic agent (Xi Erkesiteluo ST, Hai Mingsi company (Thixatrol ST, Elementis Co.)), is mixed, And disperse described mixture with three-roll grinder.
(methyl) acrylate compounds can be by Mei Wang speciality chemical company limited (Miwon Specialty Chemical Co., Ltd.) the following compound made.
Use phenol (EO) 4 acrylate (meter La Mei of (A) monofunctional acrylate compound (Miramer) M4144, molecular weight is 324), the Polyethylene Glycol of (B) bifunctional acrylate's compound 200 diacrylates (meter La Mei M282, molecular weight is 308), (C) trifunctional acrylate chemical combination The pentaerythritol triacrylate (meter La Mei M340, molecular weight is 298) of thing, (D) four functionalized propylene The tetramethylol methane tetraacrylate (meter La Mei M420, molecular weight is 352) of ester compound, and (E) (meter La Mei M3150, molecular weight is the trimethylolpropane (EO) 15 of trifunctional acrylate compounds 956)。
The amount (weight %) of each component provides in table 1 below.
(table 1)
The impressionability assessment of electrode pattern
To be respectively coated according to the electrode constituent of example 1 to example 7 and comparative example 1 to comparative example 11 On the front side of wafer, and with the naked eye count the dotted line quantity through printing electrode and according to below with reference to mark Accurate to its assessment.Result provides in table 2 below.
5A:0,4A: less than 3,3A: less than 6,2A: less than 12,1A: less than 15, and 0A: more than or equal to 20.
The adhesion strength assessment of electrode pattern
By using 400 mesh screens of a width of 5 cm x of opposite side 5 centimetres will arrive example 7 and ratio according to example 1 Relatively example 1 is respectively printed on the front surface of wafer to the electrode constituent of comparative example 11, and at 300 DEG C It is dried at 400 DEG C, thus manufactures each sample.The following adhesion strength assessing each sample: according to grid Lattice adhesion strength assessment (ASTM D3359) makes 100 comb mesh pattern with revolving knife, to its attachment gold Belong to adhesive tape (No. 610,3M) and described adhesive tape is peeled off from it, and according to below with reference to mark The accurate quantity converting the grid peeled off with adhesive tape.Result provides in table 2 below.
5B:0%；4B: less than 5%；3B: more than or equal to 5% to less than 15%；2B: more than or Equal to 15% to less than 35%；1B: more than or equal to 35% to less than 65%；And 0B: more than or Equal to 65%
(table 2)
Reference table 2, and respectively by the electrode pattern formed according to the electrode constituent of example 1 to example 7 Compare, respectively by according to comparative example 1, comparative example 2, comparative example 3, comparative example 5, comparative example 7 and The electrode pattern that the electrode constituent of comparative example 9 is formed shows insufficient adhesion strength, and respectively by root Electrode constituent shape according to comparative example 4, comparative example 6, comparative example 8, comparative example 10 and comparative example 11 The electrode pattern become shows gratifying adhesion strength but lacks impressionability, and therefore adds Rs, And expect that efficiency is had ill effect.On the contrary, respectively by the electrode group according to example 1 to example 7 The electrode pattern becoming thing to be formed shows fabulous adhesion strength and guarantees enough impressionabilities, and therefore Advantageously improve efficiency.
The electrical efficiency assessment of solaode
Each electrode constituent screen printing of comparative example 11 will be arrived according to example 1 to example 7 and comparative example 1 (it is polycrystalline wafers obtained as below: doped with making p-type wafer stricture of vagina on the front surface of boron to brush wafer Physics and chemistry, thereon with POCl3Form n+Layer, and form ARC with silicon nitride (SiNx:H)) Front side on to form predetermined pattern, and by use infrared drying boiler at 300 DEG C to 400 DEG C It is dried.Then, print aluminum on the back side of the wafer with method same as above stick with paste and make it be dried. Then at 400 DEG C to 900 DEG C, in conveyor-type boiler, fire the battery 30 obtained in this process Second was by 50 seconds, thus manufactured test battery.
(CT-801, by Pa Shan joint-stock company (Pasan to then pass through use solar battery efficiency measurement equipment SA) manufacture) measure the electrical characteristics (fill factor and efficiency, Isc) testing battery.Result is in table 3 below Middle offer.
(table 3)
Reference table 3, with the solar-electricity manufactured by the electrode constituent according to comparative example 1 to comparative example 11 Pond is compared, the solaode displaying of the electrode constituent manufacture according to example 1 to example 7 make us full The FF of meaning and efficiency.
Although having combined it is now recognized that the exemplary embodiments of practicality is to describe the present invention, it should be appreciated that this Invention is not limited to the disclosed embodiments, and antithesis, is included in appended right wants it is intended that contain Ask the various amendments in the spirit and scope of book and equivalent.

Claims (13)

1. an electrode constituent, including:
Conductive powder；
Frit；And
Organic vehicle, it comprises organic bond, multifunctional (methyl) acrylate compounds and solvent,
The molecular weight of wherein said multifunctional (methyl) acrylate compounds is 200 to 500, and with institute Stating 100 weight % meters of electrode constituent, described multifunctional (methyl) acrylate compounds is with 0.15 Weight % exists to the amount of 2 weight %.
Electrode constituent the most according to claim 1, wherein said multifunctional (methyl) acroleic acid esterification Compound is by two (methyl) acrylate compounds, three (methyl) acrylate compounds, four (methyl) acrylic acid Ester compounds and its mixture are selected.
Electrode constituent the most according to claim 1, wherein said multifunctional (methyl) acroleic acid esterification Compound is selected by the following: trimethylolpropane tris (methyl) acrylate, ethylene glycol bisthioglycolate (methyl) third Olefin(e) acid ester, triethylene glycol two (methyl) acrylate, butanediol two (methyl) acrylate, hexanediol two (first Base) acrylate, tetramethylolmethane three (methyl) acrylate, trihydroxy methyl three (methyl) acrylate, season penta Tetrol four (methyl) acrylate and its mixture.
Electrode constituent the most according to claim 1, wherein with 100 weights of described electrode constituent Amount % meter, described multifunctional (methyl) acrylate compounds is to deposit to the amount of 2 weight % with 0.2 weight % ?.
Electrode constituent the most according to claim 1, wherein said multifunctional (methyl) acroleic acid esterification The molecular weight of compound is 250 to 400.
Electrode constituent the most according to claim 1, wherein said multifunctional (methyl) acroleic acid esterification Compound remains in gained film after heat treatment at 200 DEG C to 400 DEG C.
Electrode constituent the most according to claim 1, wherein said frit by bismuth class frit, Lead class frit and its mixture are selected.
Electrode constituent the most according to claim 7, wherein said bismuth class frit is bismuth-tellurium glass Material.
Electrode constituent the most according to claim 8, wherein said bismuth-tellurium frit includes that 20 rub % to 80 mole of % tellurium oxide of that and 20 moles of % to 80 mole of % bismuth oxide.
Electrode constituent the most according to claim 1, wherein said electrode constituent includes 60 weights The amount described conductive powder of % to 95 weight %, the described frit and 1 of 0.5 weight % to 20 weight % Weight % is to the described organic vehicle of 30 weight %.
11. electrode constituents according to claim 1, wherein said electrode constituent further include by At least one additive selected in the following: surface conditioning agent, dispersant, thixotropic agent, plasticiser, Viscosity stabiliser, defoamer, pigment, UV stabilizer, antioxidant and coupling agent.
12. 1 kinds of electrodes, use according to the electrode group described in any claim in claim 1 to 11 Become thing manufacture.
13. 1 kinds of solaodes, including electrode according to claim 12.
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JP2016210962A (en) 2016-12-15
KR101976661B1 (en) 2019-05-09

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