CN109872832A - It is used to form the constituent of electrode of solar battery and the electrode using its preparation - Google Patents
It is used to form the constituent of electrode of solar battery and the electrode using its preparation Download PDFInfo
- Publication number
- CN109872832A CN109872832A CN201810651079.2A CN201810651079A CN109872832A CN 109872832 A CN109872832 A CN 109872832A CN 201810651079 A CN201810651079 A CN 201810651079A CN 109872832 A CN109872832 A CN 109872832A
- Authority
- CN
- China
- Prior art keywords
- electrode
- solar battery
- constituent
- frit
- oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000470 constituent Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title description 2
- 239000000843 powder Substances 0.000 claims abstract description 25
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- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052796 boron Inorganic materials 0.000 claims abstract description 16
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 9
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 31
- 229910044991 metal oxide Inorganic materials 0.000 claims description 18
- 150000004706 metal oxides Chemical class 0.000 claims description 15
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 8
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
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- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 4
- 239000002270 dispersing agent Substances 0.000 claims description 4
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- 239000011574 phosphorus Substances 0.000 claims description 4
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- 239000000326 ultraviolet stabilizing agent Substances 0.000 claims description 2
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- 239000011701 zinc Substances 0.000 claims 1
- 229910052726 zirconium Inorganic materials 0.000 claims 1
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- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
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- 238000006243 chemical reaction Methods 0.000 description 2
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- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 2
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Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/02—Frit compositions, i.e. in a powdered or comminuted form
- C03C8/04—Frit compositions, i.e. in a powdered or comminuted form containing zinc
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/02—Frit compositions, i.e. in a powdered or comminuted form
- C03C8/08—Frit compositions, i.e. in a powdered or comminuted form containing phosphorus
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/14—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions
- C03C8/20—Glass frit mixtures having non-frit additions, e.g. opacifiers, colorants, mill-additions containing titanium compounds; containing zirconium compounds
-
- 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
-
- 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
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Abstract
A kind of constituent being used to form electrode of solar battery disclosed herein and a kind of electrode of solar battery.The constituent for electrode of solar battery includes: conducting powder；Tellurium (Te)-silver (Ag)-boron (B) is frit；And organic carrier, wherein the tellurium (Te) of the frit is 70:1 to 5:1 to the molar ratio of boron (B).
Description
Technical field
The present invention relates to a kind of constituent for electrode of solar battery and a kind of electrodes formed using it.
Background technique
Solar battery utilizes the photovoltage by the p-n junction (p-n junction) that the photon of daylight is converted into electric power to imitate
(photovoltaic effect) is answered to generate electric power.In solar cells, respectively in the semiconductor wafer with p-n junction
Or preceding electrode and rear electrode are formed in the upper surface and the lower surface of substrate.Then, by the day photo-induced p-n into semiconductor wafer
Photovoltaic effect at knot, and the electronics generated by the photovoltaic effect at p-n junction is provided via electrode to outside
Electric current.The sun is formed on chip and the constituent for electrode of solar battery is applied, patterned and toasted
The electrode of energy battery.
As the constituent for electrode of solar battery, the conduction comprising conducting powder, frit and organic carrier is used
Cream composing substance.Frit is for the antireflective coating on fused semiconductor chip, so that the electricity formed between conducting powder and chip connects
Touching.
Specifically, frit not only to the electrical characteristics of solar battery (such as electrode open-circuit voltage (Voc) and series connection
Resistance (Rs)) it has an impact and the aspect ratio of the electrode for the transfer efficiency and fill factor for determining solar battery can also be generated
It influences.
Therefore, it is necessary to the constituents for electrode of solar battery that one kind can improve the electrical characteristics of solar battery.
Background technique of the invention is disclosed in Japanese Unexamined Patent publication the 2012-084585th.
Summary of the invention
It is an object of the present invention to provide a kind of high contacting efficiencies that can ensure that between electrode and the surface of chip, thus
Make electrode contact resistance and series resistance minimize for described in the constituent of electrode of solar battery and a kind of use
The electrode of constituent production.
It is a further object of the present invention to provide a kind of high fill factor that can ensure that solar battery and high conversion efficiencies
Constituent and a kind of electrode made using the constituent for electrode of solar battery.
Object of the present invention and other purposes can be realized by the present invention set forth below.
One aspect of the present invention is related to a kind of constituent for electrode of solar battery.
The constituent for electrode of solar battery includes: conducting powder；Tellurium (Te)-silver (Ag)-boron (B) is glass
Material；And organic carrier, wherein the tellurium (Te) of the frit is 70:1 to 5:1 to the molar ratio of boron (B).
The frit can be formed by metal oxide, wherein the metal oxide may include 50mol% to 80mol%
Tellurium oxide (TeO2), the boron oxide (B of 0.5mol% to 20mol%2O3) and 1mol% to 30mol% silver nitrate
(AgNO3)。
Silver nitrate (the AgNO of the metal oxide3) to boron oxide (B2O3) molar ratio can be 1:3 to 3:1.
Silver nitrate (the AgNO of the metal oxide3) to tellurium oxide (TeO2) molar ratio can be 1:80 to 1:9.
The frit can be free of bismuth (Bi) or lead (Pb).
The frit can have 0.1 μm to 10 μm of partial size.
The metal oxide may also include at least one of the oxide of following element: sodium (Na), lithium (Li), zinc
(Zn), phosphorus (P), germanium (Ge), gallium (Ga), cerium (Ce), iron (Fe), silicon (Si), tungsten (W), magnesium (Mg), molybdenum (Mo), caesium (Cs), strontium
(Sr), titanium (Ti), tin (Sn), indium (In), vanadium (V), barium (Ba), nickel (Ni), copper (Cu), potassium (K), arsenic (As), cobalt (Co), zirconium
(Zr), manganese (Mn) and aluminium (Al).
The constituent may include: the conducting powder of 60wt% to 95wt%；The glass of 0.1wt% to 20wt%
Material；And the organic carrier of 1wt% to 30wt%.
The constituent also may include: dispersing agent, thixotropic agent, plasticiser, viscosity stabiliser, defoaming agent, pigment, ultraviolet light
(UV) at least one of stabilizer, antioxidant and coupling agent additive.
Another aspect of the present invention is related to a kind of electrode of solar battery.
The above-mentioned constituent for electrode of solar battery can be used to make for the electrode of solar battery.
The present invention, which provides one kind, to make electrode while the high fill factor and high conversion efficiency for ensuring solar battery
Contact resistance and series resistance minimize for electrode of solar battery constituent and it is a kind of use the constituent
The electrode of production.
Detailed description of the invention
Fig. 1 is the schematic diagram according to the solar battery of one embodiment of the invention.
Drawing reference numeral explanation
10: substrate
11: semiconductor substrate
12: emitter-base bandgap grading
21: rear electrode
23: preceding electrode
100: solar battery
Specific embodiment
Hereinafter, will be explained in detail the embodiment of the present invention.
The detailed description of the known function and construction that present subject matter can unnecessarily be obscured will be omitted.
Unless context is clearly it is further noted that otherwise singular " one (a, an) " used herein and " described
(the) " it is intended to also include plural form.In addition, ought use in the present specification term " including and/or comprising (comprises,
Comprising, includes and/or including) " when, be point out there are the feature, integer, step, operation, element,
Component, and/or its group, but be not precluded other one or more features, integer, step, operation, element, component, and/or
The presence or addition of its group.
In addition, unless otherwise stated, otherwise can take into account margin for error in analysis group timesharing.
Term " metal oxide " used herein can refer to a kind of metal oxide or Multimetal oxide.
In addition, being used to indicate that " X to the Y " of the range of certain values means " more than or equal to X and to be less than or equal to herein
Y”。
Constituent for electrode of solar battery
A kind of constituent for electrode of solar battery according to the present invention includes conducting powder, silver-colored (the Ag)-boron of tellurium (Te)-
It (B) is frit and organic carrier, wherein the tellurium (Te) of the frit is 70:1 to 5:1 to the molar ratio of boron (B).
Now, each component of the constituent according to the present invention for electrode of solar battery will be described in greater detail.
Conducting powder
Conducting powder is used to assign electric conductivity to the constituent for electrode of solar battery.It is according to the present invention to be used for the sun
The constituent of energy battery electrode may include the metal powder such as silver-colored (Ag) or aluminium (Al) as the conducting powder.For example, it leads
Electric powder can be silver powder.Conducting powder can have nano-scale particle size or micron particle size.For example, conducting powder can be for average grain diameter
Tens nanometer arrives the silver powder of some tens of pm to hundreds of nanometers or average grain diameter for a few micrometers.Alternatively, conducting powder
It can be the mixture of the silver powder with two or more varigrained seed types.
Conducting powder can have a various grain shapes, such as spherical, slice-shaped or Amorphous particles shape, to this and it is unlimited
System.
Conducting powder can have 0.1 μm to 10 μm, specifically 0.5 μm to 5 μm of average grain diameter (D50).Within this range,
The constituent can reduce the contact resistance and line resistance of solar battery.Herein, sonioation method can passed through
(ultrasonication) conducting powder is dispersed in isopropanol (isopropyl alcohol, IPA) 3 minutes at 25 DEG C
Afterwards, average grain diameter is measured using 1064D type particle size analyzer (Ci Lasi Co., Ltd (CILAS Co., Ltd.)).
In the constituent for electrode of solar battery, it may be present that 60wt% to 95wt%, specifically 70wt% is arrived
The conducting powder of the amount of 90wt%.Within this range, the constituent can be improved the transfer efficiency of solar battery and can be easy to make
For at cream form.
Tellurium (Te)-silver (Ag)-boron (B) is frit
Frit be used for by during the baking process of the constituent for electrode of solar battery to antireflection layer into
Row etching simultaneously melts conducting powder and forms silver-colored crystal grain in emitter region.In addition, frit can improve conducting powder and chip
Bonding force, and be softened during baking process to reduce baking temperature.
It the use of silver-colored (the Ag)-boron (B) of tellurium (Te)-is frit, wherein tellurium (Te) is to boron as frit according to the present invention
(B) molar ratio is in 70:1 to 5:1 range.The contacting efficiency between electrode and the surface of chip can be improved in frit, from
And minimize the contact resistance of electrode and series resistance while improving the fill factor and transfer efficiency of solar battery.
Specifically, the tellurium (Te) of frit can be 35:1 to 8:1 to the molar ratio of boron (B), more specifically be 20:1 to 10:1.
Tellurium (Te)-silver (Ag)-boron (B) is that frit can be by including tellurium oxide (TeO2), silver nitrate (AgNO3) and boron oxide
(B2O3) metal oxide formed.Herein, silver nitrate (AgNO is removed3) other than, silver also may originate from silver oxide, silver cyanide, halogenation
Silver, silver carbonate or silver acetate.For example, frit can be prepared in the following manner: uses ball mill or planetary mill
Above-mentioned metal oxide is mixed, this mixture is melted at 900 DEG C to 1,300 DEG C, and molten mixture is quenched into 25 DEG C,
Then product obtained is crushed using disc mill, planetary mill etc..Frit can have 0.1 μm to 10 μm of average grain
Diameter (D50).
In one embodiment, frit can be formed by metal oxide, wherein the metal oxide may include
Tellurium oxide (the TeO of 50mol% to 80mol%2), the boron oxide (B of 0.5mol% to 20mol%2O3) and 1mol% arrive
Silver nitrate (the AgNO of 30mol%3)。
In one embodiment, metal oxide may include 0.5mol% to 20mol%, specifically 0.5mol% is arrived
Boron oxide (the B of 7mol%, more specifically 0.5mol% to 5mol%2O3).Metal oxide may include that 1mol% is arrived
Silver nitrate (the AgNO of 30mol%, specifically 1mol% to 10mol%, more specifically 2mol% to 7mol%3).Metal
Oxide may include the tellurium oxide (TeO of 50mol% to 80mol%, specifically 60mol% to 75mol%2).In these models
In enclosing, frit can make the contact resistance of electrode and series resistance minimum while improving the fill factor of solar battery
Change.
Silver nitrate (the AgNO of metal oxide3) to boron oxide (B2O3) molar ratio can be 3:1 to 1:3.In this range
Interior, the fill factor of solar battery can be improved in frit.
Silver nitrate (the AgNO of metal oxide3) to tellurium oxide (TeO2) molar ratio can be 1:80 to 1:9.In this range
Interior, the fill factor of solar battery can be improved in frit.
Frit can be free of bismuth (Bi) or lead (Pb).The frit of bismuth-containing (Bi) or lead (Pb) can not make the contact electricity of electrode
Resistance and series resistance minimize, without making other property-deteriorations.
The metal oxide may also include at least one of the oxide of following element: sodium (Na), lithium (Li), zinc
(Zn), phosphorus (P), germanium (Ge), gallium (Ga), cerium (Ce), iron (Fe), silicon (Si), tungsten (W), magnesium (Mg), molybdenum (Mo), caesium (Cs), strontium
(Sr), titanium (Ti), tin (Sn), indium (In), vanadium (V), barium (Ba), nickel (Ni), copper (Cu), potassium (K), arsenic (As), cobalt (Co), zirconium
(Zr), manganese (Mn) and aluminium (Al).
In the constituent for electrode of solar battery, 0.1wt% to 20wt% may be present, be specifically
The frit of the amount of 0.5wt% to 10wt%.Within this range, frit can ensure that the stabilization of the p-n junction under various sheet resistances
Property, minimize resistance, and the final efficiency for improving solar battery.
Organic carrier
Organic carrier is and with the inorganic component of the constituent for electrode of solar battery progress mechanical mixture to institute
It states constituent and assigns the viscosity and rheological behavior for being suitable for printing.
Organic carrier can be any typical organic carrier used in the constituent for electrode of solar battery, and general
Include adhesive resin, solvent etc..
Adhesive resin can be one of acrylate or celluosic resin or a variety of.Generally use ethyl cellulose
Element is used as described adhesive resin.In addition, adhesive resin can be one of following or a variety of: ethylhydroxyethylcellulose,
NC Nitroncellulose, the admixture of ethyl cellulose and phenol resin, alkyd resin, phenol resin, acrylate, dimethylbenzene tree
Rouge, polybutene resin (polybutene resin), polyester resin, carbamide resin, melamine resin, vinyl acetate resin,
Wood rosin, polymethacrylates of alcohol etc..
Solvent can be one of following or a variety of: for example, the molten fibre of hexane, toluene, ethyl cellosolve, cyclohexanone, butyl
Agent, butyl carbitol (diethylene glycol monobutyl ether), dibutyl carbitol (DBC) (dibutyl ethylene glycol ether), acetate of butyl carbitol
(butyl carbitol acetate), propylene glycol monomethyl ether, hexylene glycol, terpineol, methyl ethyl ketone, benzyl alcohol, γ-Ding Nei
Ester and ethyl lactate.These solvents can be used alone or use as its form of mixtures.
In the constituent for electrode of solar battery, the organic carrier of the amount of 1wt% to 30wt% may be present.Herein
In range, organic carrier can provide enough adhesive strengths and good impressionability to the constituent.
Additive
Constituent according to the present invention for electrode of solar battery can optionally also comprising any typical additive with
Enhance mobility, handlability and stability.Additive may include dispersing agent, thixotropic agent, plasticiser, viscosity stabiliser, defoaming
Agent, pigment, ultra-violet stabilizer, antioxidant, coupling agent etc..These additives can be used alone or as its form of mixtures
It uses.With the total weight of the constituent for electrode of solar battery, the additive of the amount of 0.1wt% to 5wt% may be present,
But the content of the additive can be optionally changed.
Electrode of solar battery and solar battery including the electrode of solar battery
Other aspects of the present invention are related to a kind of electrode and packet that the constituent by for electrode of solar battery is formed
Include the solar battery of the electrode.Fig. 1 shows solar battery according to an embodiment of the invention.
Referring to Fig.1, include substrate 10 according to the solar battery of the present embodiment 100, be formed in the front surface of substrate 10
Preceding electrode 23 and the rear electrode 21 that is formed on the back surface of substrate 10.
In one embodiment, substrate 10 can be the substrate for being formed with p-n junction thereon.Specifically, substrate 10 can wrap
Include semiconductor substrate 11 and emitter-base bandgap grading 12.More specifically, substrate 10 can be for by utilizing n-type dopant to p-type semiconductor substrate
11 surface is doped the substrate prepared to form N-shaped emitter-base bandgap grading 12.Alternatively, substrate 10 can be logical
Cross the lining for being doped using a surface of the p-type dopant to n-type semiconductor substrate 11 and preparing to form p-type emitter-base bandgap grading 12
Bottom.Herein, semiconductor substrate 11 can be p-substrate or n-type substrate.P type substrate can be for doped with the semiconductor of p-type dopant lining
Bottom 11, and n-type substrate can be the semiconductor substrate 11 doped with n-type dopant.
In the explanation to substrate 10, semiconductor substrate 11 etc., the light of such substrate is entered what the substrate was penetrated
Surface is known as front surface (optical receiving surface).In addition, the surface opposite with front surface of substrate is known as back surface.
In one embodiment, semiconductor substrate 11 can be formed by silicon metal or compound semiconductor.Herein, silicon metal can
For monocrystal or polycrystal.As silicon metal, such as silicon wafer can be used.
Herein, p-type dopant can be the material including, for example, group-III elements such as boron, aluminium or galliums.In addition, n-type dopant can
For the material including, for example, V group elements such as phosphorus, arsenic or antimony.
The constituent according to the present invention for electrode of solar battery can be used to make for preceding electrode 23 and/or rear electrode 21
Make.Specifically, preceding electrode 23, which can be used, makes comprising silver powder as the constituent of conducting powder, and packet can be used in rear electrode 21
It is made containing aluminium powder as the constituent of conducting powder.Preceding electrode 23 can be printed by that will be used for the constituent of electrode of solar battery
It on to emitter-base bandgap grading 12 and then is toasted to be formed, and rear electrode 21 can be by applying the constituent for being used for electrode of solar battery
It is added to the back surface of semiconductor substrate 11 and then is toasted to be formed.
Next, the present invention is explained in more detail in reference example.It is only used for however, it should be noted that providing these examples
Illustrate, but should not be understood as limiting the invention in any way.
In addition, for clarity, no longer being repeated the obvious details of one of skill in the art.
Example 1
As organic bond, by the ethyl cellulose of 3.0wt% (STD4, Dow Chemical (Dow at 60 DEG C
Chemical Company)) it is substantially dissolved in the butyl carbitol of 6.5wt%, and be then added into binder solution
Ball shape silver powder (AG-4-8, same and advanced techniques Co., Ltd (Dowa Hightech that the average grain diameter of 87.5wt% is 2.0 μm
Co., Ltd.)), the average grain diameter of 2.5wt% be 2.0 μm and the dispersing agent with the frit, 0.2wt% that are formed shown in table 1
(BYK 102, Bi Ke chemical company (BYK-chemie)) and 0.3wt% thixotropic agent (odd section, jail, Saudi (Thixatrol) ST,
Hai Mingsi Co., Ltd (Elementis Co., Ltd.)), it is then mixed and is mediated in 3 roller kneaders, to prepare
Constituent for electrode of solar battery.
Example 2 arrives comparative example 3 to example 7 and comparative example 1
Other than changing into the composition of frit as listed in table 1, it is prepared in a manner of identical with example 1 for too
The constituent of positive energy battery electrode.
Table 1
| (mol%) | TeO2 | AgNO3 | B2O3 | ZnO | Li2O | PbO | Bi2O3 | It amounts to | Molar ratio (Te/B) |
| Example 1 | 69.14 | 3.5 | 2.39 | 12.04 | 12.93 | - | - | 100 | 14.46 |
| Example 2 | 70.53 | 3.58 | 0.52 | 12.18 | 13.19 | - | - | 100 | 67.82 |
| Example 3 | 64.66 | 3.42 | 6.23 | 13.04 | 12.65 | - | - | 100 | 5.19 |
| Example 4 | 60.91 | 3.1 | 0.52 | 14.28 | 21.19 | - | - | 100 | 58.57 |
| Example 5 | 70.93 | 2.59 | 6.75 | 9.15 | 10.58 | - | - | 100 | 5.25 |
| Example 6 | 56.2 | 3.92 | 0.41 | 15.28 | 24.19 | - | - | 100 | 68.54 |
| Example 7 | 74.84 | 2.53 | 7.4 | 6.92 | 8.31 | - | - | 100 | 5.06 |
| Comparative example 1 | 75.58 | 3.58 | 0.5 | 10.15 | 10.19 | - | - | 100 | 75.58 |
| Comparative example 2 | 64.66 | 3.42 | 7 | 12.72 | 12.2 | - | - | 100 | 4.62 |
| Comparative example 3 | 71.64 | - | 2.48 | 12.48 | 13.4 | - | - | 100 | 14.44 |
Properties evaluations
(1) contact resistance (Rc, m Ω), series resistance (Rs, m Ω) and open-circuit voltage (Voc, mV): by with predetermined pattern
It carries out screen painting, be then dried in infrared (IR) drying oven, be used for the sun for what is prepared in example and comparative example
Each of the constituent of energy battery electrode is deposited in the front surface of chip.Make the battery formed according to this program in band
Baking 60 seconds to 210 seconds is subjected in type oven at 600 DEG C to 900 DEG C, and followed by transmission length method (transfer
Length method, TLM) tester commented about contact resistance (Rc), series resistance (Rs) and open-circuit voltage (Voc)
Valence.As a result it is illustrated in table 2.
(2) fill factor (%) and efficiency (%): by carrying out screen painting, then in infra-red drying furnace with predetermined pattern
In be dried, each of the constituent for being used for electrode of solar battery prepared in example and comparative example is deposited on
In the front surface of chip.Then, aluminium cream is printed on the back surface of the wafer and is dried in the same manner as described above.
The battery formed according to this program is set to be subjected to baking 30 seconds to 180 seconds at 400 DEG C to 900 DEG C in banding pattern oven, and
Followed by solar battery efficiency tester CT-801 (Pa Sang Co., Ltd (Pasan Co., Ltd.)) about fill factor
(FF, %) and transfer efficiency (Eff., %) are evaluated.As a result it is illustrated in table 2.
Table 2
As shown in table 2, it can be seen that fallen in range described herein using molar ratio of the wherein tellurium to boron and be used for the sun
The electrode of solar battery of the constituent production of energy battery electrode, which can express, has high contacting efficiency with the surface of chip, thus
Minimize contact resistance and series resistance while improving the fill factor and transfer efficiency of solar battery.
On the contrary, as can be seen that comparative example 1 that wherein tellurium is in except range described herein the molar ratio of boron and comparing
The electrode of solar battery of example 2 has high series resistance and contact resistance, and the not electrode of solar battery of the comparative example 3 of argentiferous
Show high resistance and low fill factor.
Although some embodiments have been elaborated herein, although it is understood that in the item without departing substantially from spirit and scope of the present invention
Under part, various modifications may be made by one of skill in the art, modification and change.It will be understood, therefore, that providing previous embodiment
It is for illustration purposes only, and is not construed as limiting the invention in any way.
Claims (10)
1. a kind of constituent for electrode of solar battery, characterized by comprising:
Conducting powder；
Tellurium-silver-boron system frit；And
Organic carrier,
Wherein the tellurium of the frit is 70:1 to 5:1 to the molar ratio of boron.
2. the constituent according to claim 1 for electrode of solar battery, which is characterized in that the frit be by
Metal oxide is formed, and the metal oxide includes the tellurium oxide of 50mol% to 80mol%, 0.5mol% to 20mol%
The silver nitrate of boron oxide and 1mol% to 30mol%.
3. the constituent according to claim 2 for electrode of solar battery, which is characterized in that the metal oxide
Silver nitrate be 1:3 to 3:1 to the molar ratio of boron oxide.
4. the constituent according to claim 2 for electrode of solar battery, which is characterized in that the metal oxide
Silver nitrate be 1:80 to 1:9 to the molar ratio of tellurium oxide.
5. the constituent according to claim 1 for electrode of solar battery, which is characterized in that the frit is free of
Bismuth or lead.
6. the constituent according to claim 1 for electrode of solar battery, which is characterized in that the frit has
0.1 μm to 10 μm of partial size.
7. the constituent according to claim 2 for electrode of solar battery, which is characterized in that the metal oxide
Further include at least one of the oxide of following element: sodium, lithium, zinc, phosphorus, germanium, gallium, cerium, iron, silicon, tungsten, magnesium, molybdenum, caesium, strontium,
Titanium, tin, indium, vanadium, barium, nickel, copper, potassium, arsenic, cobalt, zirconium, manganese and aluminium.
8. the constituent according to claim 1 for electrode of solar battery, characterized by comprising:
The conducting powder of 60wt% to 95wt%；
The frit of 0.1wt% to 20wt%；And
The organic carrier of 1wt% to 30wt%.
9. the constituent according to claim 1 for electrode of solar battery, which is characterized in that also include: dispersing agent,
At least one in thixotropic agent, plasticiser, viscosity stabiliser, defoaming agent, pigment, ultra-violet stabilizer, antioxidant and coupling agent
Kind additive.
10. a kind of electrode of solar battery, which is characterized in that use and be used for too to described in any one of 9 according to claim 1
It is positive can the constituent of battery electrode make.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020170165625A KR20190066158A (en) | 2017-12-05 | 2017-12-05 | Composition for forming solar cell electrode and electrode prepared using the same |
| KR10-2017-0165625 | 2017-12-05 |
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| CN101932535A (en) * | 2008-01-30 | 2010-12-29 | 巴斯夫欧洲公司 | Glass frits |
| CN104838448A (en) * | 2012-12-29 | 2015-08-12 | 第一毛织株式会社 | Composition for forming electrode of solar cell and electrode manufactured by using same |
| CN104838505A (en) * | 2013-03-29 | 2015-08-12 | 昭荣化学工业株式会社 | Conductive paste for solar cell element surface electrodes and method for manufacturing solar cell element |
| KR20160128098A (en) * | 2015-04-28 | 2016-11-07 | 삼성에스디아이 주식회사 | Composition forforming electrode, electrode manufactured using the same and solar cell |
| TW201735054A (en) * | 2016-03-18 | 2017-10-01 | 大州電子材料股份有限公司 | Lead-free conductive paste for solar cell |
| CN107408586A (en) * | 2015-03-13 | 2017-11-28 | 昭荣化学工业株式会社 | Electrode of solar battery formation conductive paste |
-
2017
- 2017-12-05 KR KR1020170165625A patent/KR20190066158A/en not_active Application Discontinuation
-
2018
- 2018-05-31 TW TW107118778A patent/TWI731243B/en active
- 2018-06-22 CN CN201810651079.2A patent/CN109872832A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101932535A (en) * | 2008-01-30 | 2010-12-29 | 巴斯夫欧洲公司 | Glass frits |
| CN104838448A (en) * | 2012-12-29 | 2015-08-12 | 第一毛织株式会社 | Composition for forming electrode of solar cell and electrode manufactured by using same |
| CN104838505A (en) * | 2013-03-29 | 2015-08-12 | 昭荣化学工业株式会社 | Conductive paste for solar cell element surface electrodes and method for manufacturing solar cell element |
| CN107408586A (en) * | 2015-03-13 | 2017-11-28 | 昭荣化学工业株式会社 | Electrode of solar battery formation conductive paste |
| KR20160128098A (en) * | 2015-04-28 | 2016-11-07 | 삼성에스디아이 주식회사 | Composition forforming electrode, electrode manufactured using the same and solar cell |
| TW201735054A (en) * | 2016-03-18 | 2017-10-01 | 大州電子材料股份有限公司 | Lead-free conductive paste for solar cell |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI731243B (en) | 2021-06-21 |
| TW201925124A (en) | 2019-07-01 |
| KR20190066158A (en) | 2019-06-13 |
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