JP2015119176A - Composition for solar battery electrode formation, and electrode manufactured by use thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composition for solar battery electrode formation which makes possible to solve the problem that a sufficient adhesive force cannot be ensured between a ribbon and an electrode manufactured by a conventional composition for solar battery electrode formation including flexible glass frit.SOLUTION: A composition for solar battery electrode formation comprises: silver powder; glass frit; and an organic vehicle. The glass frit includes bismuth (Bi), tellurium (Te) and chromium (Cr) elements. A solar battery electrode manufactured by the composition for solar battery electrode formation has a series resistance(Rs) minimized to achieve a superior conversion efficiency, and is superior in the strength of bonding with a ribbon.

Description

  The present invention relates to a composition for forming a solar cell electrode and an electrode produced thereby.

  Solar cells generate electrical energy using the photoelectric effect of a pn junction that converts photons of sunlight into electricity. In a solar cell, a front electrode and a rear electrode are respectively formed on the upper and lower surfaces of a semiconductor wafer or substrate on which a pn junction is formed. In a solar cell, a photoelectric effect of a pn junction is induced by sunlight incident on a semiconductor wafer, and an electron generated thereby provides a current that flows to the outside through an electrode. The electrode of such a solar cell can be formed on the wafer surface by application of an electrode paste composition, patterning, and baking (see, for example, Patent Document 1).

  In recent years, the thickness of the emitter has been continuously reduced in order to increase the efficiency of the solar cell, which can induce a shunting phenomenon that can degrade the performance of the solar cell. In addition, in order to increase the efficiency of the solar cell, the area of the solar cell is gradually increased, but this can increase the contact resistance of the solar cell and decrease the efficiency of the solar cell.

  In addition, a cell constituting a solar cell includes a ribbon for a solar cell (or ribbon wire; an interconnector, a bus bar, a cell connecting plate, a cell coupling plate, a ribbon-like tab wire (conductive wire (for example, copper Wire) woven or knitted), ribbon wire, etc.), but if the adhesion between the electrode and the ribbon is not good, the series resistance is large and the conversion efficiency may be reduced.

  The present inventor has paid attention to the fact that the adhesive force between an electrode and a ribbon manufactured with a composition for forming a solar cell electrode containing a conventional flexible glass frit is not sufficiently secured, and to improve the present invention, It came to complete.

Special table 2013-504152 gazette

  The objective of this invention is providing the composition for solar cell electrode formation which can minimize series resistance (Rs).

  Another object of the present invention is to provide a solar cell electrode excellent in fill factor and conversion efficiency.

  Another object of the present invention is to provide a composition for forming a solar cell electrode having excellent adhesive strength between an electrode and a ribbon.

  The above and other objects of the present invention can all be achieved by the present invention described below.

  One aspect of the present invention includes a silver powder; a glass frit; and an organic vehicle, wherein the glass frit includes bismuth (Bi), tellurium (Te), and chromium (Cr) elements. It relates to a forming composition.

  The molar ratio (Cr: Te) of chromium (Cr) to tellurium (Te) may be 1: 1 to 1:80.

  The glass frit includes lead (Pb), lithium (Li), zinc (Zn), tungsten (W), phosphorus (P), silicon (Si), magnesium (Mg), cerium (Ce), strontium (Sr), Molybdenum (Mo), titanium (Ti), tin (Sn), indium (In), vanadium (V), barium (Ba), nickel (Ni), copper (Cu), sodium (Na), potassium (K), Antimony (Sb), germanium (Ge), gallium (Ga), calcium (Ca), arsenic (As), cobalt (Co), zirconium (Zr), manganese (Mn), aluminum (Al), and boron (B) It may further contain one or more elements selected from the group consisting of:

  The glass frit may further include 5 mol% to 50 mol% of lead (Pb) element with respect to the total weight of the glass frit.

  The glass frit comprises 5% to 30% by weight of bismuth oxide; 40% to 80% by weight of tellurium oxide (tellurium oxide); 1% to 15% by weight of chromium oxide, and 1% by weight of fourth metal oxide. It may be produced from a metal oxide mixture containing from 50% to 50% by weight.

  The fourth metal oxide includes lead (Pb), lithium (Li), zinc (Zn), tungsten (W), phosphorus (P), silicon (Si), magnesium (Mg), cerium (Ce), strontium ( Sr), molybdenum (Mo), titanium (Ti), tin (Sn), indium (In), vanadium (V), barium (Ba), nickel (Ni), copper (Cu), sodium (Na), potassium ( K), antimony (Sb), germanium (Ge), gallium (Ga), calcium (Ca), arsenic (As), cobalt (Co), zirconium (Zr), manganese (Mn), aluminum (Al), and boron One or more metal oxides of (B) may be included.

  The fourth metal oxide comprises 1% by mass to 10% by mass of lithium oxide, 1% by mass to 10% by mass of zinc oxide, and 1% by mass to 10% by mass of tungsten oxide based on the total mass of the metal oxide mixture. May be included.

  The fourth metal oxide may include 15% by mass to 50% by mass of lead oxide (PbO) with respect to the total mass of the metal oxide mixture.

  The composition may include 60% to 95% by weight of the silver powder; 0.5% to 20% by weight of the glass frit; and 1% to 30% by weight of the organic vehicle.

  The glass frit may have an average particle diameter (D50; median diameter) of 0.1 μm to 10 μm.

  The composition is selected from the group consisting of a dispersant, a thixotropic agent, a plasticizer, a viscosity stabilizer, an antifoaming agent, a pigment, an ultraviolet stabilizer, an antioxidant, and a coupling agent. One or more additives may further be included.

  The organic vehicle may include a binder resin, and the binder resin may have a weight average molecular weight (Mw) of 30,000 g / mol to 200,000 g / mol.

  The composition may have a viscosity of 100,000 cps to 500,000 cps.

  The solar cell electrode which is another viewpoint of this invention can be formed from the said composition for solar cell electrode formation.

  The solar cell electrode manufactured with the composition for forming a solar cell electrode of the present invention has a low series resistance (Rs), an excellent fill factor and conversion efficiency, and an excellent adhesive strength with a ribbon.

It is the schematic which illustrated the structure of the solar cell concerning one Embodiment of this invention simply.

<Solar cell electrode forming composition>
The composition for forming a solar cell electrode of the present invention (hereinafter also simply referred to as a composition) includes a silver powder; a glass frit containing bismuth (Bi), tellurium (Te) and chromium (Cr) elements; and a sun containing an organic vehicle. It is a composition for battery electrode formation, and since the series resistance (Rs) is minimized, the fill factor and the conversion efficiency are excellent, and the adhesive strength with the ribbon connecting the solar cells (cells) is excellent.

  The present invention will be described in detail below.

(A) Silver powder The composition for solar cell electrode formation of this invention uses silver (Ag) powder as electroconductive powder. The silver powder may be a powder having a nano-size or micro-size particle size, for example, a silver powder having a size of several tens to several hundred nanometers, or a silver powder having several tens to several tens of micrometers, and two or more Silver powders having different sizes can be mixed and used.

  The silver powder may have a spherical shape, a plate shape, or an amorphous shape.

  In the present embodiment (one specific example), the average particle diameter (D50) of the silver powder may be 0.1 μm to 10 μm. For example, it may be 0.5 μm to 5 μm. The average particle size was measured using a 1064LD model manufactured by CILAS after dispersing silver (Ag) powder, which is a conductive powder, in isopropyl alcohol (IPA) at 25 ° C. for 3 minutes by ultrasonic waves. Is. If the average particle diameter of the silver powder is within the above range, the contact resistance and the line resistance can be reduced.

  The silver powder may be included at 60 mass% to 95 mass% with respect to the total mass of the composition. When the silver powder is within the above range with respect to the total mass of the composition, it is possible to prevent the conversion efficiency from being lowered due to an increase in resistance. For example, it may be included at 70 mass% to 90 mass%. In this embodiment (specific example), the silver powder is 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73 with respect to the total mass of the composition. 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, or 95% by mass. .

(B) Glass frit containing bismuth (Bi), tellurium (Te) and chromium (Cr) elements A glass frit is used as an antireflective coating during the baking process of an electrode paste (a composition for forming a solar cell electrode). Etching to produce silver crystal particles in the emitter region so that the resistance is lowered by melting silver particles (silver powder), improving the adhesion between the conductive powder (conductive powder) and the wafer, It softens during sintering and induces the effect of lowering the firing temperature.

  Increasing the area of the solar cell to increase the conversion efficiency of the solar cell can increase the contact resistance of the solar cell, thus minimizing damage to the pn junction and simultaneously reducing the series resistance (Rs). ) To minimize the open circuit voltage (Voc). In addition, since the variation range of the firing temperature is increased by increasing the number of wafers having various surface resistances, it is preferable to use a glass frit that can sufficiently ensure thermal stability even at a wide firing temperature.

  Furthermore, the cells constituting the solar cell are interconnected by a ribbon. However, if the adhesion strength of the solar cell electrode bonded to the ribbon is not sufficiently secured, the cell is dropped. Reliability may be reduced.

  In the present invention, a glass frit containing bismuth (Bi), tellurium (Te) and chromium (Cr) elements is introduced in order to simultaneously secure the electrical characteristics and physical characteristics such as adhesive strength of the solar cell electrode. did.

  In an embodiment of the present invention (another specific example), the molar ratio of the chromium (Cr) to the tellurium (Te) may be 1: 1 to 1:80. If it is in the range of the molar ratio, it is excellent in the adhesive strength and conversion efficiency of the solar cell electrode bonded to the ribbon, and low series resistance and contact resistance can be ensured. In this embodiment (specific example), the molar ratio may be 1: 1 to 1:40. For example, the molar ratio may be 1: 5 to 1:35.

  In this embodiment (specific example), the glass frit includes lead (Pb), lithium (Li), zinc (Zn), tungsten (W) in addition to bismuth (Bi), tellurium (Te), and chromium (Cr) elements. ), Phosphorus (P), silicon (Si), magnesium (Mg), cerium (Ce), strontium (Sr), molybdenum (Mo), titanium (Ti), tin (Sn), indium (In), vanadium (V ), Barium (Ba), nickel (Ni), copper (Cu), sodium (Na), potassium (K), antimony (Sb), germanium (Ge), gallium (Ga), calcium (Ca), arsenic (As ), Cobalt (Co), zirconium (Zr), manganese (Mn), aluminum (Al) and boron (B). Element may further comprise a.

  In particular, the glass frit of the present invention contains lead (Pb) element in addition to bismuth (Bi), tellurium (Te), and chromium (Cr) elements in an amount of 5 mol% to 50% with respect to the total weight of the glass frit. You may contain mol%. In this case, it is possible to have an excellent effect in terms of processability. In this embodiment (specific example), the lead (Pb) element is 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 with respect to the total weight of the glass frit. 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41 42, 43, 44, 45, 46, 47, 48, 49 or 50 mol%.

  The glass frit may be manufactured from a metal oxide mixture including bismuth oxide, tellurium oxide, chromium oxide and a fourth metal oxide.

  In the present embodiment (specific example), the fourth metal oxide is lead (Pb), lithium (Li), zinc (Zn), tungsten (W), phosphorus (P), silicon (Si), magnesium (Mg). ), Cerium (Ce), strontium (Sr), molybdenum (Mo), titanium (Ti), tin (Sn), indium (In), vanadium (V), barium (Ba), nickel (Ni), copper (Cu) ), Sodium (Na), potassium (K), antimony (Sb), germanium (Ge), gallium (Ga), calcium (Ca), arsenic (As), cobalt (Co), zirconium (Zr), manganese (Mn) ), One or more metal oxides selected from aluminum (Al) and boron (B).

  In this embodiment (one specific example), the metal oxide mixture comprises 5% to 30% by weight of bismuth oxide; 40% to 80% by weight of tellurium oxide; 1% to 15% by weight of chromium oxide, and The fourth metal oxide may contain 1% by mass to 50% by mass. Excellent conversion efficiency (Efficiency) and adhesion strength (Adhesion Strength) can be simultaneously secured within the above range.

  In this embodiment (specific example), the fourth metal oxide may include 15% by mass to 50% by mass of lead oxide (PbO) with respect to the total mass of the metal oxide mixture. When it is contained in the above range, it can have an excellent effect in terms of processability. In this embodiment (specific example), the fourth metal oxide contains 15, 16, 17, 18, 19, 20, 21, 22, 22, 23 with respect to the total mass of the metal oxide mixture. 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48 49 or 50% by mass.

In the present embodiment (specific example), the fourth metal oxide is 1% by mass to 10% by mass of lithium oxide (Li ₂ O) and 1% by mass of zinc oxide (ZnO) with respect to the total mass of the metal oxide mixture. % To 10% by mass, and tungsten oxide (WO ₃ ) 1% to 10% by mass. Within the above range, excellent conversion efficiency and adhesive strength can be secured at the same time. In the present embodiment (specific example), the glass frit comprises bismuth oxide 5 mass% to 30 mass%; tellurium oxide (tellurium oxide) 40 mass% to 80 mass%; chromium oxide 1 mass% to 15 mass%. Manufactured from a metal oxide mixture comprising 1% to 10% by weight of lithium oxide (Li ₂ O), 1% to 10% by weight of zinc oxide (ZnO), and 1% to 10% by weight of tungsten oxide (WO ₃ ) It may be done. Within the above range, excellent conversion efficiency and adhesive strength can be secured at the same time.

  The glass frit can be produced from the metal oxide using a conventional method. For example, it mixes with the composition of the said metal oxide. The mixing can be performed using a ball mill or a planetary mill. Next, the mixed composition is melted at 900 ° C. to 1300 ° C. and quenched at 25 ° C. The obtained product can be pulverized by a disk mill, a planetary mill or the like to obtain a glass frit.

  In this embodiment (specific example), the glass frit having an average particle diameter (D50; median diameter) of 0.1 μm to 10 μm can be used. In the present invention, the glass frit may have a spherical shape or an indefinite shape.

  In this embodiment (specific example), the glass frit may include 0.5% by mass to 20% by mass based on the total mass of the composition. When included in the above range, the adhesive strength and the conversion efficiency are excellent under various surface resistances, the series resistance value can be minimized, and finally the efficiency of the solar cell can be improved. In this embodiment (specific example), the glass frit is 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, based on the total mass of the composition. 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20% by mass may be included.

(C) Organic vehicle The organic vehicle has a viscosity and rheological characteristics suitable for printing on a paste composition (solar cell electrode forming composition) through mechanical mixing with inorganic components of the solar cell electrode forming composition. Give.

  As the organic vehicle, an organic vehicle used in a normal composition for forming a solar cell electrode may be used, but a binder resin, a solvent, and the like can usually be included.

  As the binder resin, an acrylate-based or cellulose-based resin can be used, and ethyl cellulose is generally used. However, it is not limited thereto, ethyl hydroxyethyl cellulose, nitrocellulose, a mixture of ethyl cellulose and phenol resin, alkyd resin, phenol resin, acrylate resin, xylene resin, polybutene resin, polyester resin, Urea resins, melamine resins, vinyl acetate resins, wood rosins, alcohol polymethacrylates, and the like can also be used.

  In the present embodiment (specific example), the binder resin may have a weight average molecular weight (Mw) of 30,000 g / mol to 200,000 g / mol. When the weight average molecular weight (Mw) of the binder resin is within the above range, an excellent effect can be obtained in terms of printability. For example, it may be 40,000 g / mol to 150,000 g / mol.

  Examples of the solvent include hexane, toluene, ethyl cellosolve, cyclohexanone, butyl cellosolve, butyl carbitol (diethylene glycol monobutyl ether), dibutyl carbitol (diethylene glycol dibutyl ether), butyl carbitol acetate (diethylene glycol monobutyl ether acetate), and propylene glycol monomethyl. Ether, hexylene glycol, terpineol, terpeneol, methyl ethyl ketone, benzyl alcohol, gamma butyrolactone, ethyl lactate, or the like may be used alone or in combination.

  The organic vehicle may be included in an amount of 1% by mass to 30% by mass with respect to the total mass of the composition. Sufficient contact strength and excellent printability can be secured within the above range. In this embodiment (specific example), the blending amount of the organic vehicle is 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, with respect to the total mass of the composition. 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, or 30% by mass may be included.

(D) Additive In addition to the components (A) to (C) described above, the composition for forming a solar cell electrode of the present invention is usually used as necessary to improve flow characteristics, process characteristics and stability. An additive may be further included. In this embodiment (specific example), the additive includes a dispersant, a thixotropic agent (thixotropic agent), a plasticizer, a viscosity stabilizer, an antifoaming agent, a pigment, an ultraviolet stabilizer, an antioxidant, and a coupling. One or more agents may be included.

  The additive can be added at 0.1% by mass to 5% by mass with respect to the total mass of the composition, but may be changed as necessary. In this embodiment (specific example), the compounding amount of the additive is 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, relative to the total mass of the composition. You may include 0.7, 0.8, 0.9, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, or 5 mass%.

  The viscosity of the solar cell electrode forming composition may be 100,000 cps to 500,000 cps (100 kcps to 500 kcps). When the viscosity is in the above range, it can have an excellent effect in terms of printability. For example, it may be 250,000 cps to 400,000 cps (250 kcps to 400 kcps).

<Solar cell electrode and solar cell including the same>
Another viewpoint of this invention is related with the electrode formed from the said composition for solar cell electrode formation, and a solar cell containing the same. FIG. 1 shows the structure of a solar cell according to an embodiment (one specific example) of the present invention.

  Referring to FIG. 1, the composition for forming a solar cell electrode is printed on a wafer 100 or a substrate including a p layer (or n layer) 101 and an n layer (or p layer) 102 as an emitter, and fired. Thus, the rear electrode 210 and the front electrode 230 can be formed. For example, the solar cell electrode forming composition may be printed and applied on the rear surface of the wafer and then dried at a temperature of 200 ° C. to 400 ° C. for about 10 seconds to 60 seconds to perform a preliminary preparation step for the rear electrode. Moreover, after printing the composition for solar cell electrode formation on the front surface of a wafer, it can dry and can perform the preliminary preparation step for a front electrode. Thereafter, a front electrode and a rear electrode can be formed by performing a baking process of baking at 400 ° C. to 950 ° C., for example, 850 ° C. to 950 ° C. for 30 seconds to 50 seconds.

  Hereinafter, the present invention will be described more specifically with reference to examples. However, the examples are only for the purpose of explanation and should not be construed as limiting the present invention.

Example 1
As the bismuth oxide, tellurium oxide, chromium oxide and the fourth metal oxide, lithium oxide, zinc oxide and tungsten oxide are mixed in the composition shown in Table 1 below and melted and sintered at 900 ° C. to 1400 ° C. to obtain an average particle size. A glass frit having a (D50) of 2.0 μm was produced.

  As an organic binder (a binder resin of an organic vehicle), ethyl cellulose (Dow chemical company, STD4) (weight average molecular weight (Mw) = 50,000 g / mol) 0.8% by mass of butyl carbitol (Butyl Carbitol) 8 as a solvent After being sufficiently dissolved in 5% by mass at 60 ° C., 86.5% by mass of spherical silver powder (Dowa Hightech CO. LTD, AG-4-8) having an average particle size of 2.0 μm, produced as described above Glass frit 3.5% by mass, dispersant BYK102 (BYK-chemie) 0.2% by mass, and thixtrol-ST (Elementis co.) 0.5% by mass were added and mixed evenly. After that, a solar cell electrode forming composition is manufactured by mixing and dispersing with a three-roll kneader. It was.

  The viscosity of the manufactured composition was measured at room temperature using a Brookfield HBDV-II + Pro, which is a rotational viscometer, and the sample was completely filled in the sample cup at the time of measurement, and a 14th spin was attached. After stabilizing the temperature for 5 minutes, it was measured at a shear rate of 10 rpm. The measured viscosity values are shown in Table 2.

  The manufactured composition for forming a solar cell electrode was screen-printed in a predetermined pattern on the front surface of a crystalline monowafer (Wafer), printed, and dried using an infrared drying oven to manufacture a front electrode. Thereafter, the electrode-forming composition containing aluminum was printed on the rear surface of the wafer, and then dried in the same manner. The cell formed in the above process was baked at 980 ° C. for 40 seconds using a belt-type baking furnace to complete the manufacture. The cell thus manufactured is measured for series resistance (Rs) (mΩ), fill factor (FF,%) and conversion efficiency (%) using a solar cell efficiency measurement equipment (Pasan, CT-801). After that, flux was applied to the front electrode, and the ribbon was joined to the ribbon at 300 ° C. to 400 ° C. with a soldering iron (HAKKO). Thereafter, the adhesive strength was measured at a stretching speed of 50 mm / min using a tension machine (Tinius olsen) under the condition of a peeling angle of 180 °. The measured conversion efficiency, series resistance and adhesive strength (N / mm) are shown in Table 2 below.

Examples 2 to 20 and Comparative Examples 1 to 3
Except that a glass frit was produced with the composition shown in Table 1 below, a composition for forming a solar cell electrode was produced in the same manner as in Example 1, and the physical properties were measured and shown in Table 2 below.

  As can be seen from Table 2, the solar cell electrodes manufactured with the composition for forming a solar cell electrode using the glass frit of Examples 1 to 20 are comparative examples 1 to 1 that are out of the glass frit composition of the present invention. It can be seen that the series resistance value is lower than in Example 3, the fill factor and conversion efficiency are excellent, and the adhesive strength with the ribbon is excellent.

  Simple variations or modifications of the present invention can be easily implemented by those having ordinary knowledge in the field, and all such variations and modifications can be considered to be included in the scope of the present invention.

100: wafer,
101: p layer,
102: n layer,
210: rear electrode,
230: Front electrode.

Claims (14)

Silver powder; glass frit; and organic vehicle,
The glass frit includes a bismuth (Bi), tellurium (Te), and chromium (Cr) element, and the composition for forming a solar cell electrode.   2. The composition for forming a solar cell electrode according to claim 1, wherein a molar ratio of the chromium (Cr) and the tellurium (Te) is 1: 1 to 1:80.   The glass frit includes lead (Pb), lithium (Li), zinc (Zn), tungsten (W), phosphorus (P), silicon (Si), magnesium (Mg), cerium (Ce), strontium (Sr), Molybdenum (Mo), titanium (Ti), tin (Sn), indium (In), vanadium (V), barium (Ba), nickel (Ni), copper (Cu), sodium (Na), potassium (K), From antimony (Sb), germanium (Ge), gallium (Ga), calcium (Ca), arsenic (As), cobalt (Co), zirconium (Zr), manganese (Mn), aluminum (Al) and boron (B) The composition for forming a solar cell electrode according to claim 1 or 2, further comprising one or more elements selected from the group consisting of:   The said glass frit contains 5 mol%-50 mol% of lead (Pb) elements with respect to the total weight of the said glass frit, The solar cell electrode formation of any one of Claims 1-3 characterized by the above-mentioned. Composition.   The glass frit is composed of bismuth oxide 5 mass% to 30 mass%; tellurium oxide 40 mass% to 80 mass%; chromium oxide 1 mass% to 15 mass%, and fourth metal oxide 1 mass% to 50 mass%. 5. The composition for forming a solar cell electrode according to claim 1, wherein the composition is formed from a metal oxide mixture containing at least 1%.   The fourth metal oxide includes lead (Pb), lithium (Li), zinc (Zn), tungsten (W), phosphorus (P), silicon (Si), magnesium (Mg), cerium (Ce), strontium ( Sr), molybdenum (Mo), titanium (Ti), tin (Sn), indium (In), vanadium (V), barium (Ba), nickel (Ni), copper (Cu), sodium (Na), potassium ( K), antimony (Sb), germanium (Ge), gallium (Ga), calcium (Ca), arsenic (As), cobalt (Co), zirconium (Zr), manganese (Mn), aluminum (Al) and boron ( The composition for forming a solar cell electrode according to claim 5, comprising one or more metal oxides selected from the group consisting of B).   The fourth metal oxide comprises 1% by mass to 10% by mass of lithium oxide, 1% by mass to 10% by mass of zinc oxide, and 1% by mass to 10% by mass of tungsten oxide based on the total weight of the metal oxide mixture. The composition for solar cell electrode formation of Claim 5 or 6 characterized by the above-mentioned.   The said 4th metal oxide contains 15 mass%-50 mass% of lead oxide (PbO) with respect to the total weight of the said metal oxide mixture, The any one of Claims 5-7 characterized by the above-mentioned. A solar cell electrode forming composition.   The said silver powder 60 mass%-95 mass%; The said glass frit 0.5 mass%-20 mass%; and the said organic vehicle 1 mass%-30 mass%; A solar cell electrode forming composition.   The composition for forming a solar cell electrode according to any one of claims 1 to 9, wherein the glass frit has an average particle size (D50) of 0.1 µm to 10 µm.   The composition is one or more selected from the group consisting of a dispersant, a thixotropic agent, a plasticizer, a viscosity stabilizer, an antifoaming agent, a pigment, an ultraviolet stabilizer, an antioxidant, and a coupling agent. The composition for forming a solar cell electrode according to any one of claims 1 to 10, further comprising an additive.   The organic vehicle includes a binder resin, and the binder resin has a weight average molecular weight (Mw) of 30,000 g / mol to 200,000 g / mol. The composition for solar cell electrode formation as described in any one of.   The composition for forming a solar cell electrode according to any one of claims 1 to 12, wherein the composition has a viscosity of 100,000 cps to 500,000 cps.   The solar cell electrode manufactured with the composition for solar cell electrode formation in any one of Claims 1-13.