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WO2018221578A1 - Composition de pâte pour batterie solaire - Google Patents

Composition de pâte pour batterie solaire Download PDF

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Publication number
WO2018221578A1
WO2018221578A1 PCT/JP2018/020749 JP2018020749W WO2018221578A1 WO 2018221578 A1 WO2018221578 A1 WO 2018221578A1 JP 2018020749 W JP2018020749 W JP 2018020749W WO 2018221578 A1 WO2018221578 A1 WO 2018221578A1
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WO
WIPO (PCT)
Prior art keywords
paste composition
mol
glass frit
aluminum
solar cell
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.)
Ceased
Application number
PCT/JP2018/020749
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English (en)
Japanese (ja)
Inventor
マルワン ダムリン
直哉 森下
正博 中原
卓也 高山
禎隆 真弓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Aluminum KK
Nihon Yamamura Glass Co Ltd
Original Assignee
Toyo Aluminum KK
Nihon Yamamura Glass Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyo Aluminum KK, Nihon Yamamura Glass Co Ltd filed Critical Toyo Aluminum KK
Priority to CN201880033818.XA priority Critical patent/CN110663119B/zh
Priority to JP2019521266A priority patent/JP7013458B2/ja
Publication of WO2018221578A1 publication Critical patent/WO2018221578A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/20—Electrodes
    • 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
    • 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

Definitions

  • the present invention relates to a solar cell paste composition, and more particularly to a solar cell intended to form a p + layer on a crystalline solar cell having a passivation film provided with an opening using laser irradiation or the like.
  • the present invention relates to a paste composition.
  • PERC Passivated emitter and rear cell
  • the PERC type high conversion efficiency cell has a structure including an electrode layer mainly composed of aluminum, for example.
  • This electrode layer (especially the back electrode layer) is formed, for example, by applying a paste composition mainly composed of aluminum in a pattern shape so as to cover the opening of the passivation film, and drying and baking as necessary. Is done. It is known that the conversion efficiency of the PERC type high conversion efficiency cell can be improved by appropriately designing the configuration of the electrode layer.
  • Patent Document 1 discloses an aluminum paste composition containing a glass frit composed of 30 to 70 mol% Pb 2+ , 1 to 40 mol% Si 4+ , 10 to 65 mol% B 3+ , and 1 to 25 mol% Al 3+. Has been.
  • Patent Document 2 relates to a paste composition containing aluminum powder, aluminum-silicon alloy powder, silicon powder, glass powder, and an organic vehicle, particularly as glass powder, “lead as glass powder ( Pb), bismuth (Bi), vanadium (V), boron (B), silicon (Si), tin (Sn), phosphorus (P), and one selected from the group consisting of zinc (Zn), or It may contain two or more kinds, and lead-containing glass powder or lead-free glass powder such as bismuth, vanadium, tin-phosphorus, zinc borosilicate, alkali borosilicate, etc. may be used. Can be made ”(paragraph [0035] in Patent Document 2).
  • the present invention has been made in view of the above, and in a crystalline solar cell, high conversion efficiency was obtained, the structure of the glass frit was stable, and the change in viscosity (thickening) over time was suppressed. It aims at providing the paste composition for solar cells.
  • this invention relates to the following paste composition for solar cells.
  • a solar cell paste composition comprising aluminum powder, an organic vehicle and glass frit, wherein the glass frit contains 50 to 90 mol% of Sb 2 O 3 .
  • the solar cell paste composition according to Item 1 comprising 30 to 35 parts by mass of the organic vehicle and 0.5 to 5.0 parts by mass of the glass frit with respect to 100 parts by mass of the aluminum powder. .
  • Item 3. The solar cell paste composition according to Item 1 or 2, wherein the glass frit further contains SiO 2 and / or B 2 O 3 .
  • the solar cell paste composition of the present invention a high conversion efficiency is obtained in a crystalline solar cell (particularly a PERC type high conversion efficiency cell), the structure of the glass frit is stable, and the viscosity changes over time. (Thickening) is suppressed.
  • the paste composition of this invention has favorable applicability
  • the solar cell paste composition of the present invention can be used, for example, to form electrodes of crystalline solar cells. Although it does not specifically limit as a crystalline solar cell, For example, a PERC (Passivated * emitter * and * rear * cell) type high conversion efficiency cell (henceforth a "PERC type solar cell”) is mentioned.
  • the solar cell paste composition of the present invention can be used, for example, to form a back electrode of a PERC solar cell.
  • the paste composition of the present invention is also simply referred to as “paste composition”.
  • FIGS. 1A and 1B are schematic views of a general cross-sectional structure of a PERC type solar cell.
  • the PERC type solar cell includes a silicon semiconductor substrate 1, an n-type impurity layer 2, an antireflection film (passivation film) 3, a grid electrode 4, an electrode layer (back electrode layer) 5, an alloy layer 6, and a p + layer 7. Can be provided as an element.
  • the silicon semiconductor substrate 1 is not particularly limited.
  • a p-type silicon substrate having a thickness of 180 to 250 ⁇ m is used.
  • the n-type impurity layer 2 is provided on the light receiving surface side of the silicon semiconductor substrate 1.
  • the thickness of the n-type impurity layer 2 is, for example, 0.3 to 0.6 ⁇ m.
  • the antireflection film 3 and the grid electrode 4 are provided on the surface of the n-type impurity layer 2.
  • the antireflection film 3 is formed of, for example, a silicon nitride film and is also referred to as a passivation film.
  • the antireflection film 3 acts as a so-called passivation film, so that recombination of electrons on the surface of the silicon semiconductor substrate 1 can be suppressed, and as a result, the recombination rate of the generated carriers can be reduced. Thereby, the conversion efficiency of a PERC type photovoltaic cell is increased.
  • the antireflection film (passivation film) 3 is also provided on the back surface side of the silicon semiconductor substrate 1, that is, the surface opposite to the light receiving surface.
  • a contact hole (opening) formed through the antireflection film (passivation film) 3 on the back surface side and scraping a part of the back surface of the silicon semiconductor substrate 1 is formed on the back surface of the silicon semiconductor substrate 1. Formed on the side.
  • the method of forming the contact hole is not limited, but a so-called LCO (Laser contact opening) method of providing an opening using laser irradiation or the like is general.
  • the electrode layer 5 is formed in contact with the silicon semiconductor substrate 1 through the contact hole.
  • the electrode layer 5 is a member formed by the paste composition of the present invention, and is formed in a predetermined pattern shape.
  • the electrode layer 5 may be formed so as to cover the entire back surface of the PERC type solar battery cell as in the form of FIG. 1A, or the contact hole and the electrode layer 5 as in the form of FIG. You may form so that the vicinity may be covered. Since the main component of the electrode layer 5 is aluminum, the electrode layer 5 is an aluminum electrode layer.
  • the electrode layer 5 is formed, for example, by applying a paste composition in a predetermined pattern shape and baking it.
  • the coating method is not particularly limited, and examples thereof include known methods such as screen printing. After applying the paste composition and drying it as necessary, the electrode layer 5 is formed by firing for a short time at a temperature exceeding the melting point of aluminum (about 660 ° C.), for example.
  • the firing temperature may be a temperature exceeding the melting point of aluminum (about 660 ° C.), but is preferably about 750 to 950 ° C., more preferably about 780 to 900 ° C.
  • the firing time can be appropriately set according to the firing temperature within the range in which the desired electrode layer 5 is formed.
  • an aluminum-silicon (Al—Si) alloy layer (alloy layer 6) is formed between the electrode layer 5 and the silicon semiconductor substrate 1, and at the same time, by diffusion of aluminum atoms, p as an impurity layer is formed. A + layer 7 is formed.
  • the p + layer 7 can bring about an effect of preventing recombination of electrons and improving the collection efficiency of generated carriers, that is, a so-called BSF (Back Surface Field) effect.
  • BSF Back Surface Field
  • the electrode formed by the electrode layer 5 and the alloy layer 6 is the back electrode 8 shown in FIG. Accordingly, the back electrode 8 is formed using a paste composition, and is applied, for example, so as to cover the contact hole 9 (opening) provided in the antireflection film (passivation film) 3 on the back side. Accordingly, the back electrode 8 can be formed by baking after drying.
  • the paste composition of the present invention high conversion efficiency can be obtained in the solar battery cell.
  • the paste composition of the present invention since the viscosity change (thickening) with time is suppressed, the paste composition of the present invention has good coating properties (printability) even when time elapses from preparation.
  • the paste composition of the present invention is a solar cell paste composition containing aluminum powder, an organic vehicle and glass frit, and the glass frit contains 50 to 90 mol% of Sb 2 O 3.
  • the back electrode of a solar battery cell such as a PERC solar battery cell can be formed by using the paste composition. That is, the paste composition of the present invention is used to form a back electrode for a solar cell that is in electrical contact with a silicon substrate through an opening (contact hole) provided in a passivation film formed on the silicon substrate. it can. According to the paste composition of the present invention, high conversion efficiency is obtained in a crystalline solar cell (particularly PERC type solar cell), the structure of the glass frit is stable, and the viscosity change (increase) with time. (Viscous) is suppressed.
  • the paste composition of the present invention high conversion efficiency is obtained in a crystalline solar cell (particularly PERC type solar cell), the structure of the glass frit is stable, and the viscosity change (increase) with time. (Viscous) is suppressed.
  • the paste composition includes aluminum powder, an organic vehicle and glass frit as constituent components. And since the paste composition contains aluminum powder (conductive material), the sintered body formed by baking the coating film of the paste composition exhibits electrical conductivity that is electrically connected to the silicon substrate. . (Aluminum powder) The aluminum powder contained in the paste composition exhibits electrical conductivity in the aluminum electrode layer formed by firing the paste composition. In addition, the aluminum powder can obtain the BSF effect by forming the aluminum-silicon alloy layer 6 and the p + layer 7 between the aluminum powder and the silicon semiconductor substrate 1 when the paste composition is fired.
  • the shape of the aluminum powder is not particularly limited, and may be any of a spherical shape, an elliptical shape, an indefinite shape, a scale shape, a fiber shape, and the like. If the shape of the aluminum powder is spherical, in the electrode layer 5 formed of the paste composition, the filling property of the aluminum powder can be increased and the electrical resistance can be effectively reduced.
  • the average particle diameter measured by a laser diffraction method is preferably in the range of 1 to 10 ⁇ m.
  • the aluminum powder may be composed only of high-purity aluminum or may contain an aluminum alloy.
  • examples of the aluminum alloy include an aluminum-silicon alloy and an aluminum-boron alloy.
  • the aluminum powder preferably contains an aluminum-silicon alloy, and the silicon content in the aluminum powder is preferably 10 to 25 atomic%.
  • the silicon content is more preferably 15-22 atomic%.
  • organic vehicle a material in which various additives and resins are dissolved in a solvent as required can be used.
  • the resin itself may be used as the organic vehicle without containing the solvent.
  • solvent known types can be used, and specific examples include diethylene glycol monobutyl ether, diethylene glycol monobutyl ether acetate, dipropylene glycol monomethyl ether, and the like.
  • an antioxidant for example, an antioxidant, a corrosion inhibitor, an antifoaming agent, a thickener, a tack fire, a coupling agent, an electrostatic imparting agent, a polymerization inhibitor, a thixotropic agent, an antisettling agent, etc.
  • an antioxidant for example, an antioxidant, a corrosion inhibitor, an antifoaming agent, a thickener, a tack fire, a coupling agent, an electrostatic imparting agent, a polymerization inhibitor, a thixotropic agent, an antisettling agent, etc.
  • polyethylene glycol ester compound polyethylene glycol ether compound, polyoxyethylene sorbitan ester compound, sorbitan alkyl ester compound, aliphatic polycarboxylic acid compound, phosphate ester compound, amide amine salt of polyester acid, polyethylene oxide Series compounds, fatty acid amide waxes and the like can be used.
  • Known resins can be used, such as ethyl cellulose, nitrocellulose, polyvinyl butyral, phenolic resin, melanin resin, urea resin, xylene resin, alkyd resin, unsaturated polyester resin, acrylic resin, polyimide resin, furan resin, Thermosetting resin such as urethane resin, isocyanate compound, cyanate compound, polyethylene, polypropylene, polystyrene, ABS resin, polymethyl methacrylate, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, polyvinyl alcohol, polyacetal, polycarbonate, polyethylene terephthalate, Polybutylene terephthalate, polyphenylene oxide, polysulfone, polyimide, polyethersulfone, polyarylate, polyetherether Tons, polytetrafluoroethylene, can be used in combination of two or more kinds of such as silicon resin.
  • the ratio of the resin, solvent, and various additives contained in the organic vehicle can be arbitrarily adjusted.
  • the component ratio can be the same as that of a known organic vehicle.
  • the content of the organic vehicle is not particularly limited, for example, from the viewpoint of having good printability, it is preferably 20 to 45 parts by mass, and 30 to 35 parts by mass with respect to 100 parts by mass of the aluminum powder. Is particularly preferred. (Glass frit)
  • the glass frit is said to have an effect of assisting the reaction between the aluminum powder and silicon and the sintering of the aluminum powder itself.
  • the glass frit (100 mol%) contains 50 to 90 mol% of Sb 2 O 3 . Since such a glass frit suppresses a change in viscosity (thickening) over time of the paste composition, it has good coatability (printability) even when time elapses from preparation.
  • the Sb 2 O 3 content in the glass frit may be 50 to 90 mol%.
  • the structure of the glass frit is particularly stable in 52 to 70 mol%, and the viscosity change with time (thickening) ) Is preferred.
  • Sb 2 O 3 content of the conversion efficiency of the solar cell (Eff) is low in the case of less than 50 mole%, and there is a time afraid to thicken than 5 Pa ⁇ s in the paste composition.
  • Sb 2 O 3 content is 90 mol% excess is may not be used as an electrode material becomes difficult to vitrify.
  • the Sb 2 O 3 content is more than 70 mol% and 90 mol% or less, it can be used as an electrode material, but the glass frit structure may be realized depending on temperature, pressure, or glass frit manufacturing conditions. May fall within acceptable range of use.
  • the glass frit preferably further contains SiO 2 and / or B 2 O 3 as the balance excluding Sb 2 O 3 .
  • 2 component as a glass frit Sb 2 O 3 -B 2 O 3, or Sb 2 O 3 -B 2 O 3 but it is preferably composed from any of the three components of -SiO 2, the effect of the present invention It is permissible to further contain other components within a range that does not affect the above.
  • the content of components other than Sb 2 O 3 is not limited, but the content of B 2 O 3 is preferably 30 to 40 mol%, more preferably 30 to 36 mol%.
  • the content of SiO 2 is preferably 0 to 14 mol%, and more preferably 0 to 5 mol%. 1 mol% is preferable as the lower limit of the content of the time of addition of SiO 2.
  • the content of the glass frit is not particularly limited, but for example, it is preferably 0.5 to 5.0 parts by mass with respect to 100 parts by mass of the aluminum powder. In this case, the adhesion between the silicon semiconductor substrate 1 and the antireflection film 3 (passivation film) is good, and the electrical resistance is hardly increased.
  • the paste composition of the present invention preferably has a composition containing 30 to 35 parts by mass of the organic vehicle and 0.5 to 5.0 parts by mass of the glass frit with respect to 100 parts by mass of the aluminum powder. .
  • a composition containing 30 to 35 parts by mass of the organic vehicle and 0.5 to 5.0 parts by mass of the glass frit with respect to 100 parts by mass of the aluminum powder. By setting to such a range, high conversion efficiency is obtained, the structure of the glass frit is stable, and the change in viscosity (thickening) with time is suppressed.
  • the paste composition of the present invention is suitable for use, for example, for forming an electrode layer of a solar battery cell (in particular, a back electrode 8 of a PERC type solar battery cell as shown in FIG. 1). Therefore, the paste composition of this invention can be used also as a solar cell back surface electrode formation agent.
  • Example 1 (Preparation of paste composition) 100 parts by mass of D 50 : 4.0 ⁇ m aluminum powder produced by the gas atomization method, 1.5 parts by mass of glass frit of Sb 2 O 3 —B 2 O 3 (70 mol% -30 mol%), ethyl cellulose A paste was formed on 35 parts by mass of a resin solution dissolved in butyl diglycol using a dispersing device (disper). This obtained the paste composition.
  • a fired substrate that is a solar cell A fired substrate as a solar cell for evaluation was produced as follows.
  • a silicon semiconductor substrate 1 having a thickness of 180 ⁇ m (including a passivation film on the back side) was prepared.
  • a contact hole 9 having a width D of 50 ⁇ m and a depth of 1 ⁇ m was formed on the back surface of the silicon semiconductor substrate 1 using a YAG laser having a wavelength of 532 nm as a laser oscillator.
  • This silicon semiconductor substrate 1 had a resistance value of 3 ⁇ ⁇ cm and was a back surface passivation type single crystal.
  • the passivation film is not shown and is handled as being included in the silicon semiconductor substrate 1, and the passivation film is a laminate of a 30 nm aluminum oxide layer and a 100 nm silicon nitride layer on the back side of the silicon semiconductor substrate 1. Included as a body.
  • the paste composition 10 obtained above is applied to the surface of the silicon semiconductor substrate 1 so as to cover the entire back surface (the surface on the side where the contact holes 9 are formed). On the top, printing was carried out at 1.0 to 1.1 g / pc using a screen printer. Next, although not shown, an Ag paste prepared by a known technique was printed on the light receiving surface.
  • the prepared paste composition was left in an oven at 50 ° C. for 1 week, and the viscosity change before and after the test was measured with a viscometer.
  • a viscometer a corn plate type viscometer DV2T manufactured by Brookfield was used, and measurement was performed in accordance with 2.3 corn plate viscometer method of JIS K5600.
  • the viscosity change before and after the test was less than 5 Pa ⁇ s.
  • a mending tape (12 mm width, manufactured by 3M Company) is 3 cm long on the surface of the electrode layer 5 (aluminum electrode) formed on the back surface of the silicon semiconductor substrate 1. After pasting, the tape is peeled off at an angle of 45 degrees with respect to the silicon semiconductor substrate 1, and the ratio of the total area of the part to which the aluminum has adhered and the area of the pasted mending tape is binarized. Evaluation was performed by calculating using possible analysis software. The evaluation of adhesion was performed for all the same persons with the same posture, angle, force, and constant speed. The case where there was no adhesion of aluminum to the mending tape was evaluated as ⁇ , and the case where there was any adhesion was evaluated as ⁇ .
  • Example 2 A paste composition was prepared and evaluated in the same manner as in Example 1 except that 1.5 parts by mass of glass frit of Sb 2 O 3 —B 2 O 3 (65 mol% -35 mol%) was used.
  • Example 3 A paste composition was prepared and evaluated in the same manner as in Example 1 except that 1.5 parts by mass of a glass frit of Sb 2 O 3 —B 2 O 3 (60 mol% -40 mol%) was used.
  • Example 4 A paste composition was prepared in the same manner as in Example 1 except that 1.5 parts by mass of glass frit of Sb 2 O 3 —B 2 O 3 —SiO 2 (55 mol% -35 mol% -10 mol%) was used. And evaluated.
  • Example 5 A paste composition was prepared in the same manner as in Example 1 except that 1.5 parts by mass of glass frit of Sb 2 O 3 —B 2 O 3 —SiO 2 (52 mol% -34 mol% -14 mol%) was used. And evaluated.
  • Example 6 A paste composition was prepared in the same manner as in Example 1 except that 0.5 parts by mass of glass frit of Sb 2 O 3 —B 2 O 3 —SiO 2 (52 mol% -34 mol% —14 mol%) was used. And evaluated.
  • Example 7 A paste composition was prepared in the same manner as in Example 1 except that 5.0 parts by mass of glass frit of Sb 2 O 3 —B 2 O 3 —SiO 2 (52 mol% —34 mol% —14 mol%) was used. And evaluated.
  • Comparative Example 1 Example 1 except that 1.5 parts by mass of a glass frit of B 2 O 3 —SiO 2 —BaO—CaO—ZnO (35 mol% -10 mol% -35 mol% -10 mol% -10 mol%) was used. A paste composition was prepared and evaluated in the same manner as described above.
  • Comparative Example 2 Sb 2 O 3 (100 mol%) could not be vitrified. That is, a paste composition was prepared and evaluated in the same manner as in Example 1 except that 1.5 parts by mass of non-vitrified Sb 2 O 3 (100 mol%) frit was used.
  • Comparative Example 3 A glass frit of Sb 2 O 3 —B 2 O 3 (46 mol% -54 mol%) cannot be used as an electrode material because it absorbs moisture, deliquescents, and when added, moisture mixes in the paste.
  • Comparative Example 4 Paste composition as in Example 1 except that 1.5 parts by mass of glass frit of B 2 O 3 —BaO—CaO—ZnO (27 mol% ⁇ 45 mol% ⁇ 10 mol% ⁇ 18 mol%) was used. Were prepared and evaluated.
  • Comparative Example 5 Example except that 1.5 parts by mass of glass frit of SiO 2 —Al 2 O 3 —B 2 O 3 —PbO (1 mol% -4 mol% -30 mol% -65 mol% -10 mol%) was used In the same manner as in No. 1, a paste composition was prepared and evaluated.
  • Comparative Example 6 A paste composition was prepared in the same manner as in Example 1 except that 0.4 parts by mass of glass frit of Sb 2 O 3 —B 2 O 3 —SiO 2 (52 mol% —34 mol% —14 mol%) was used. And evaluated.
  • Comparative Example 7 A paste composition was prepared in the same manner as in Example 1 except that 6.0 parts by mass of glass frit of Sb 2 O 3 —B 2 O 3 —SiO 2 (52 mol% ⁇ 34 mol% ⁇ 14 mol%) was used. And evaluated.
  • Table 1 below shows the conditions and evaluation results of the examples and comparative examples.
  • Comparative Example 6 In Comparative Example 6 in which the glass frit addition amount is 0.4 parts by mass, the conversion efficiency is lower than 19.0%, and in Comparative Example 7 in which the glass frit addition amount is 6.0% by mass, the electrode layer 5 (aluminum electrode) ) was poor.

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Abstract

La présente invention concerne une composition de pâte pour une batterie solaire avec laquelle il est possible d'obtenir un rendement de conversion élevé dans une cellule solaire à base de cristal, la structure de fritte de verre est stable et le changement de viscosité (épaississement) dans le temps est réduit au minimum. La présente invention réalise une composition de pâte pour une batterie solaire contenant une poudre d'aluminium, un véhicule organique et une fritte de verre. La composition de pâte pour une batterie solaire est caractérisée en ce que la fritte de verre contient de 50 à 90 % en moles de Sb2O3.
PCT/JP2018/020749 2017-05-31 2018-05-30 Composition de pâte pour batterie solaire Ceased WO2018221578A1 (fr)

Priority Applications (2)

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CN201880033818.XA CN110663119B (zh) 2017-05-31 2018-05-30 太阳能电池用膏状组合物
JP2019521266A JP7013458B2 (ja) 2017-05-31 2018-05-30 太陽電池用ペースト組成物

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JP2017-107599 2017-05-31
JP2017107599 2017-05-31

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CN109493991A (zh) * 2018-12-28 2019-03-19 广州市儒兴科技开发有限公司 一种perc电池用硼浆
WO2021036264A1 (fr) * 2019-08-29 2021-03-04 苏州腾晖光伏技术有限公司 Structure de pellicule antireflet et cellule perc

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