WO2013133644A1 - Composition d'encre conductrice pour former des électrodes transparentes - Google Patents

Composition d'encre conductrice pour former des électrodes transparentes Download PDF

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Publication number
WO2013133644A1
WO2013133644A1 PCT/KR2013/001848 KR2013001848W WO2013133644A1 WO 2013133644 A1 WO2013133644 A1 WO 2013133644A1 KR 2013001848 W KR2013001848 W KR 2013001848W WO 2013133644 A1 WO2013133644 A1 WO 2013133644A1
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WO
WIPO (PCT)
Prior art keywords
metal
transparent electrode
ink composition
conductive ink
acac
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PCT/KR2013/001848
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English (en)
Korean (ko)
Inventor
이성현
김성배
김경은
이준혁
Original Assignee
주식회사 동진쎄미켐
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Application filed by 주식회사 동진쎄미켐 filed Critical 주식회사 동진쎄미켐
Priority to CN201380013342.0A priority Critical patent/CN104159985B/zh
Publication of WO2013133644A1 publication Critical patent/WO2013133644A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/52—Electrically conductive inks
    • 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

Definitions

  • the present invention relates to a conductive ink composition for forming a transparent electrode.
  • the transparent electrode is a condensation of atoms, molecules or ions by a physicochemical method on a transparent glass substrate or a thin polymer substrate, and refers to an electrode that is transparent in the visible region (380-780 nm wavelength) and has high electrical conductivity. More specifically, the transparent electrode refers to a thin film having a light transmittance of about 80% or more and a sheet resistance of 500 ⁇ / ⁇ or less.
  • ITO Indium tin oxide
  • ZnO thin films have low cost materials and low electrical conductivity compared to ITO, and ATO thin films in which Sb is added to SnO 2 in a small amount do not etch and have a high firing temperature.
  • the metal nanowires form a network when forming the transparent electrode to secure electrical conductivity.
  • the metal nanowire network is densely formed, the electrical conductivity of the transparent electrode is improved, but the visible light transmittance is lowered and excessive cost is required.
  • metal nanowires are nanostructures, which are more active than conventional materials, and thus are prone to oxidation and corrosion when exposed to the atmosphere without a protective layer.
  • silver nanowires have high conductivity properties and are transparent in the visible region, but are known to increase resistance by about 15-20% due to oxidation and corrosion in the air. There was a problem to use.
  • the present invention exhibits excellent electrical conductivity and visible light transmittance, and does not require a separate antioxidant or protective layer to prevent corrosion and oxidation of the metal nanowires, and environmental resistance of the manufactured transparent electrode
  • An object of the present invention is to provide a conductive ink composition for a transparent electrode which can be secured.
  • an object of the present invention is to provide a method for forming a transparent electrode using the composition and a transparent electrode produced by the method.
  • the present invention to achieve the above object
  • It provides a conductive ink composition for forming a transparent electrode comprising a.
  • the present invention provides a method for producing a conductive transparent electrode and a conductive transparent electrode prepared by the method characterized in that the conductive ink composition for forming a transparent electrode applied to the substrate to dry and fire.
  • the conductive ink composition for forming a transparent electrode including the metal sol and the metal nanowire forms a conductive network with metal nanowires, and complements the disconnection of the network with the metal sol and fills the empty space, thereby providing excellent electrical conductivity and visible light. Permeability is shown.
  • the metal sol acts as a protective layer to prevent corrosion and oxidation of the metal nanowires, a separate antioxidant or protective layer is not required, and the environmental resistance of the manufactured transparent electrode can be guaranteed.
  • FIG. 1 is a conceptual diagram illustrating an embodiment of a transparent electrode formed according to the present invention.
  • FIG. 2 is an enlarged view of a scanning electron microscope of a transparent electrode formed according to the present invention.
  • 3 is a visible light transmittance of a transparent electrode formed according to the present invention.
  • the conductive ink composition for forming a transparent electrode of the present invention is a conductive ink composition for forming a transparent electrode of the present invention.
  • the metal sol according to the present invention can be prepared at room temperature and atmospheric pressure, and the metal content of the metal sol can be controlled within the metal precursor solubility range, so that not only the metal concentration can be adjusted but also the viscosity and the calcination temperature can be adjusted. In addition, it is not mixed with the metal nanowires, so that no strong acid or strong base is used to prepare the conductive ink composition for forming the transparent electrode, and thus does not damage the metal nanowires.
  • the metal sol usable in the present invention serves to improve the electrical conductivity of the entire coating film by supplementing the disconnection of the network without damaging the metal nanowires and filling the empty space between the networks with the conductive metal coating film. It also prevents oxidation of metal nanowires and acts as a protective layer to prevent wear. In particular, it not only prevents penetration of materials that may corrode metal nanowires such as moisture, oxygen, sulfur, etc., but also improves adhesion between the metal nanowires and the lower substrate.
  • the metal of a) metal precursor which can be used for the said metal sol is not specifically limited, Preferably, Group I, IIA, such as gold, silver, copper, aluminum, nickel, tin, palladium, platinum, zinc, iron, indium, magnesium, etc. It is preferable to use at least one metal selected from the group consisting of metals of Groups, Groups IIIA, IVA and VIII B, more preferably zinc, aluminum, tin, iron, copper and silver. It is better to use at least one kind.
  • the metal precursor may be at least one inorganic salt selected from the group consisting of nitrates, acetates, acetylacetonates, silicates, phosphates, and mixtures thereof, preferably acetate, acetylacetone salts or silicates. .
  • the metal precursor is preferably used in the range of 3 to 20% by weight based on the total weight of the metal sol.
  • the metal precursor may not form a dense metal coating film and thus may not act as a protective layer of the metal nanowires, and may not compensate for disconnection and fill empty spaces of the metal nanowire network.
  • the content is more than 20% by weight, the stability of the metal sol is deteriorated, the metal precursor is precipitated, requires a calcination temperature of 300 °C or more high temperature, and the calcination time is more than 30 minutes to oxidize the metal nanowires Will cause.
  • solvent for dissolving the metal precursor in the present invention is water, methanol, ethanol, propanol, isopropanol, isopropyl acetate, butanol, 2-butanol, octanol, 2-ethylhexanol, pentanol, benzyl alcohol, Hexanol, 2-hexanol, cyclohexanol, terpineol, nonanol, methylene glycol, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene Glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, triethylene glycol monobutyl ether, 2-propane One, diace
  • the mixing ratio of the solvent mixes the subsolvent in the ratio of 0.2-0.8 weight part based on 1 weight part of main solvents.
  • the main solvent may be used by selecting one of the solvents listed above, and one or more solvents other than the solvent used as the main solvent may be used as the subsolvent.
  • terpineol or nonanol has a problem in that the baking temperature of the conductive ink is high due to its high viscosity and high boiling point.
  • the viscosity and the boiling point can be lowered to control the firing temperature of the conductive ink.
  • the viscosity and sintering temperature lowering effect cannot be expected.On the contrary, when added excessively, the proper viscosity of the conductive ink cannot be maintained or defects may occur due to rapid volatilization during application. Can be.
  • Diacetyl, acetylacetone, dimethyl carbonate, or ethylene glycol are solvents that have a relatively good solubility in metal precursors.
  • the addition of methanol, ethanol, isopropanol, and the like as a subsolvent can dramatically increase the solubility in metal precursors. It is suitable for making high concentration of metal sol, but its effect is diminished outside this range.
  • the metal sol according to the present invention may be prepared by dissolving the metal precursor in the solvent at room temperature and atmospheric pressure.
  • the method for preparing the metal sol is based on the normal temperature and normal pressure conditions by using acetylacetone or a mixed solvent containing the same as a solvent using an inorganic salt of a metal, preferably a metal acetate, an acetylacetone salt or a silicate as a metal precursor.
  • a metal sol can be prepared, and the metal precursor is prepared by simply dissolving the metal precursor in a suitable solvent, thereby making the manufacturing method simple.
  • the metal content of the metal sol can be adjusted within the metal precursor solubility range to prepare a low concentration as well as a high concentration metal sol, it is possible to form a dense metal coating film as well as to control the viscosity and firing temperature of the metal sol. There is also no damage to the metal nanowires since no strong acid or strong base is used.
  • the metal of B) metal nanowires usable in the present invention is not particularly limited, but preferably Group I, such as gold, silver, copper, aluminum, nickel, tin, palladium, platinum, zinc, iron, indium, magnesium, It is preferable to use at least one metal selected from the group consisting of Group IIA, Group IIIA, Group IVA and Group VIIIB metals, more preferably selected from the group consisting of zinc, aluminum, tin, copper, silver and gold. It is preferable to use at least one metal.
  • the metal nanowires may use a diameter of 20 to 120 nm, a length of 5 to 60 um.
  • the metal nanowires may be included in an amount of 0.25 to 4 parts by weight of the metal nanowires based on 1 part by weight of the metal precursor included in the metal sol.
  • the metal nanowires are used at less than 0.25 parts by weight, the metal nanowires are difficult to form a network properly and cannot have conductivity, and when the content is more than 4 parts by weight, the metal nanowires form a network too densely.
  • the substrate becomes cloudy, which is undesirable since it causes a decrease in visible light transmittance.
  • a conductive ink composition for forming a final transparent electrode is formed by mixing a dispersion medium-metal nanowire dispersed in a dispersion medium with the metal sol using a portion of the solvent as a dispersion medium of the metal nanowires. It can be prepared, the content of each component in the conductive ink composition for forming the final transparent electrode can be adjusted within the above-described range.
  • the conductive ink composition for forming a transparent electrode according to the present invention may include additives commonly used in the art as needed in addition to the metal sol and the metal nanowire.
  • the conductive ink composition for forming a transparent electrode according to the present invention preferably has a pH in the range of 6 to 9.
  • the metal nanowires may be oxidized in the solution by an acid atmosphere, and oxidation, cleavage, or dissolution of the metal nanowires may occur even when the pH exceeds 9.
  • the present invention provides a method for producing a conductive transparent electrode and a transparent electrode produced by the method, characterized in that the transparent ink forming conductive ink composition is applied to a substrate and baked.
  • the conductive ink composition for forming a transparent electrode according to the present invention can be used in various printing processes commonly used in the art, for example, gravure off-set printing, gravure direct printing, screens ( Transparent substrates commonly used, for example, glass substrates, polys, using screen printing, spin coating, slit coating, slot die coating, or imprinting methods. It may be printed on a mid (PI) substrate, a polyethylene terephthalate (PET) substrate, and the like, and the thickness is preferably appropriately adjusted according to the use.
  • PI mid
  • PET polyethylene terephthalate
  • the electrode prepared as described above may be fired according to a firing method commonly used in the art, the firing conditions may be appropriately adjusted according to the characteristics of the substrate and the composition, it is possible to bake at less than 300 °C film It is also applicable to the organic material base material, including, preferably firing at 80 °C to 250 °C.
  • the transparent electrode according to the present invention may be usefully used for electrodes such as liquid crystal displays, plasma displays, touch panels, electroluminescent devices, thin film solar cells, dye-sensitized solar cells, and inorganic crystalline solar cells.
  • a metal sol by mixing a metal precursor and a solvent at room temperature and normal pressure conditions according to the components and contents shown in Table 1, and then mixed with a nanowire dispersion to prepare a conductive ink for transparent electrodes.
  • silver nanowire dispersion liquid in which silver nanowires were dispersed in isopropanol at a concentration of 0.8% by weight was used as the metal nanowire dispersion liquid.
  • Zn AcAc is zinc acetylacetonate
  • Cu AcAc is copper acetylacetonate
  • Sn AcAc is acetylacetonate tin
  • Al AcAc is acetylacetonate aluminum
  • Fe AcAc is acetylacetonate iron
  • Zn Ac is zinc acetate
  • Ag Ac stands for silver acetate
  • Ag AcAc stands for acetylacetonic acid
  • AcAc stands for acetylacetone
  • IPA stands for isopropanol.
  • the environmental resistance was evaluated by measuring the visible light transmittance and conductivity of the conductive ink for transparent electrodes prepared in Examples 1 to 14.
  • the glass substrate was cleaned to remove foreign substances such as organic matter, and then the conductive inks for transparent electrodes of Examples 1 to 14 were applied to the glass substrates, respectively. After application, heat treatment was performed at 200 ° C. for 10 minutes.
  • the transparent electrode prepared by using the ink composition including the metal nanowires and the metal sol according to the present invention has an excellent light transmittance of 93% or more and a sheet resistance of 500 ⁇ / ⁇ It can be seen that the conductivity is very excellent below.
  • the metal sol acts as a protective layer of the metal nanowires and exhibits excellent environmental resistance, no separate antioxidant or protective layer is required.
  • the conductive ink composition for forming a transparent electrode including the metal sol and the metal nanowire forms a conductive network with metal nanowires, and complements the disconnection of the network with the metal sol and fills the empty space, thereby providing excellent electrical conductivity and visible light. Permeability is shown.
  • the metal sol acts as a protective layer to prevent corrosion and oxidation of the metal nanowires, a separate antioxidant or protective layer is not required, and the environmental resistance of the manufactured transparent electrode can be guaranteed.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Conductive Materials (AREA)

Abstract

La présente invention concerne une composition d'encre conductrice qui permet de former des électrodes transparentes. Plus particulièrement, la composition d'encre conductrice pour la formation d'électrodes transparentes selon la présente invention est configurée de telle sorte qu'un réseau conducteur est obtenu à partir d'un nanofil métallique, la déconnexion du réseau étant complétée par un sol métallique et des espaces vides dans le réseau étant remplis avec ledit sol métallique, présentant ainsi d'excellentes caractéristiques en termes de conductivité électrique et de facteur de transmission de la lumière visible. En outre, le sol métallique sert de couche protectrice pour la protection contre la corrosion et l'oxydation du nanofil métallique, éliminant ainsi la nécessité d'un antioxydant séparé ou d'une couche protectrice, et assurant la résistance à l'environnement de l'électrode transparente obtenue.
PCT/KR2013/001848 2012-03-08 2013-03-07 Composition d'encre conductrice pour former des électrodes transparentes WO2013133644A1 (fr)

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Application Number Priority Date Filing Date Title
CN201380013342.0A CN104159985B (zh) 2012-03-08 2013-03-07 透明电极形成用导电性油墨组合物

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KR10-2012-0023772 2012-03-08
KR1020120023772A KR101991676B1 (ko) 2012-03-08 2012-03-08 투명 전극 형성용 전도성 잉크 조성물

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WO2013133644A1 true WO2013133644A1 (fr) 2013-09-12

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CN (1) CN104159985B (fr)
TW (1) TWI607063B (fr)
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Cited By (2)

* Cited by examiner, † Cited by third party
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CN103996456A (zh) * 2014-04-30 2014-08-20 天津宝兴威科技有限公司 一种高耐磨纳米金属透明导电膜的制造方法
EP3706142A1 (fr) * 2014-03-20 2020-09-09 Cambrios Film Solutions Corporation Stabilité à la lumière améliorée de conducteurs transparents à base de nanofils

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US10029916B2 (en) 2012-06-22 2018-07-24 C3Nano Inc. Metal nanowire networks and transparent conductive material
US9920207B2 (en) 2012-06-22 2018-03-20 C3Nano Inc. Metal nanostructured networks and transparent conductive material
US11274223B2 (en) 2013-11-22 2022-03-15 C3 Nano, Inc. Transparent conductive coatings based on metal nanowires and polymer binders, solution processing thereof, and patterning approaches
KR102237001B1 (ko) * 2013-12-31 2021-04-07 삼성에스디아이 주식회사 투명전극용 금속 잉크 및 그 제조방법
US11343911B1 (en) 2014-04-11 2022-05-24 C3 Nano, Inc. Formable transparent conductive films with metal nanowires
US9183968B1 (en) 2014-07-31 2015-11-10 C3Nano Inc. Metal nanowire inks for the formation of transparent conductive films with fused networks
KR102243747B1 (ko) * 2014-08-13 2021-04-23 주식회사 동진쎄미켐 투명 전극의 형성 방법과, 투명 전극 적층체
WO2016165202A1 (fr) * 2015-04-17 2016-10-20 北京天恒盛通科技发展有限公司 Électrode conductrice transparente flexible et son procédé de préparation
KR101583445B1 (ko) * 2015-05-07 2016-01-07 동의대학교 산학협력단 전도성 코팅용 조성물 및 이를 이용한 전도성 박막
CN106297966A (zh) * 2016-08-22 2017-01-04 广东纳路纳米科技有限公司 一种金属纳米线‑抗氧化材料复合的透明导电膜及其制备

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3706142A1 (fr) * 2014-03-20 2020-09-09 Cambrios Film Solutions Corporation Stabilité à la lumière améliorée de conducteurs transparents à base de nanofils
CN103996456A (zh) * 2014-04-30 2014-08-20 天津宝兴威科技有限公司 一种高耐磨纳米金属透明导电膜的制造方法

Also Published As

Publication number Publication date
CN104159985B (zh) 2016-11-09
KR101991676B1 (ko) 2019-06-21
KR20130102723A (ko) 2013-09-23
TWI607063B (zh) 2017-12-01
TW201343808A (zh) 2013-11-01
CN104159985A (zh) 2014-11-19

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