Abstract: A conductive ink composition according to the present disclosure is a conductive ink composition that can be printed on a substrate, and this conductive ink composition includes a first metal precursor of which a first metal ion may be reduced to a first metal by heat, to form a conductive coating film on the substrate, and a photothermal material for absorbing light energy such as laser and discharges the heat to surroundings, to raise the surrounding temperature to a temperature not below the temperature at which the first metal ion may be reduced, and therefore the present disclosure enables to easily form a coating film that includes a conductive first metal regarding a disconnected point during a process of forming a fine pattern, thereby enabling efficient repair.

Abstract: The present invention relates to a glass frit, a conductive paste composition comprising the glass frit, and a solar cell fabricated using the conductive paste composition. The glass frit of the present invention comprises SiO2, PbO, and at least one selected from the group consisting of Al2O3, ZrO2, ZnO, and Li2O. Further, the conductive paste composition of the present invention comprises a silver (Ag) powder, a lithium titanium oxide, a glass frit, a binder, and a solvent. The conductive paste composition of the present invention can be used to provide a solar cell having low contact resistance to enhance photoelectric efficiency.

Abstract: There is provided a conductive ink composition for offset or reverse-offset printing, the conductive ink composition including a high boiling point solvent having a boiling point of 180 to 250° C. and a dispersion assistant solvent having a boiling point of 50 to 150° C., together with metal particles and tert-butyl alcohol as a main solvent.

Abstract: The present invention provides a method of manufacturing a phosphorus-doped nickel nanoparticle. The method includes the steps of: mixing a nickel solution including a nickel compound and a solvent, a seed particle, and a phosphorus-containing reductant in an arbitrary order to prepare a mixed solution; and adjusting pH of the mixed solution such that the mixed solution becomes acidic. According to the method, a phosphorus-doped nickel nanoparticle that is suitable to be applied to solar cell electrodes requiring low contact resistance can be manufactured.

Abstract: The present invention relates to a method for manufacturing a conductive metal thin film, including: preparing a conductive metal coating solution by adding carboxylic acid to a dispersion including a conductive metal particle having a core/shell structure; coating the conductive metal coating solution on a top portion of a substrate, heat-treating it, and removing an metal oxide layer of the surface of the conductive metal particle having the core/shell structure; and forming a thin film of the conductive metal particle from which the metal oxide layer is removed.

Abstract: Disclosed herein is a conductive particle, including: a base particle containing a metal; a seed particle formed on a surface of the base particle; and a first metal layer formed on the base particle, wherein the first metal layer includes a protrusion surrounding the seed particle. The conductive particle has excellent specific resistance characteristics when it is sintered because it has nanosized protrusions formed on the surface of a metal base particle.

Abstract: Provided is a method for preparing an aqueous dispersion of metal nanoparticles having superior dispersibility and being sinterable at low temperature by modifying the surface of metal nanoparticles having hydrophobic groups with hydrophilic groups. Specifically, by treating the surface hydrophobic groups of the metal nanoparticles with a surface modification solution containing a surfactant and a wetting-dispersing agent, the treatment throughput can be improved about 10-fold and the particles can be monodispersed without agglomeration. Further, by using an antioxidant and a ligand removal agent in the solution, denaturation and oxidation of the particles can be prevented and the high-boiling-point hydrophobic ligands can be eliminated effectively. The hydrophilically treated metal nanoparticles may be dispersed in an aqueous-based solvent to prepare a metal ink sinterable at low temperature.

Abstract: The present invention relates to a glass frit, a conductive paste composition comprising the glass frit, and a solar cell fabricated using the conductive paste composition. The glass frit of the present invention comprises SiO2, PbO, and at least one selected from the group consisting of Al2O3, ZrO2, ZnO, and Li2O. Further, the conductive paste composition of the present invention comprises a silver (Ag) powder, a lithium titanium oxide, a glass frit, a binder, and a solvent. The conductive paste composition of the present invention can be used to provide a solar cell having low contact resistance to enhance photoelectric efficiency.

Abstract: The present invention provides a method of manufacturing a phosphorus-doped nickel nanoparticle. The method includes the steps of: mixing a nickel solution including a nickel compound and a solvent, a seed particle, and a phosphorus-containing reductant in an arbitrary order to prepare a mixed solution; and adjusting pH of the mixed solution such that the mixed solution becomes acidic. According to the method, a phosphorus-doped nickel nanoparticle that is suitable to be applied to solar cell electrodes requiring low contact resistance can be manufactured.

Abstract: The present invention relates to a solar cell and a method for preparing the same. The solar cell of the present invention comprises a first conductive type substrate; a second conductive type emitter layer which is located on the substrate and has a first opening; an anti-reflective film which is located on the emitter layer and has a second opening communicating with the first opening; a first electrode which fills the first opening and comprises phosphorus and nickel silicide; a second electrode which is formed on the first electrode, fills the second opening and comprises phosphorus and nickel; a front side electrode which is formed on the second electrode; and a back side electrode which is located on the rear side of the substrate.

Abstract: The present invention relates to a paste composition for a front electrode of a solar cell comprising nano silver powder surface-treated with hexanoic acid, and a solar cell comprising a front electrode formed using the paste composition. According to the present invention, a front electrode is formed using a paste composition containing nano silver powder surface-treated with hexanoic acid, thereby decreasing resistance of a front electrode and broadening an area capable of absorbing light, to improve solar cell efficiency.

Abstract: Disclosed herein is a conductive particle, including: a base particle containing a metal; a seed particle formed on a surface of the base particle; and a first metal layer formed on the base particle, wherein the first metal layer includes a protrusion surrounding the seed particle. The conductive particle has excellent specific resistance characteristics when it is sintered because it has nanosized protrusions formed on the surface of a metal base particle.

Abstract: There is provided a conductive ink composition for offset or reverse-offset printing, the conductive ink composition including a high boiling point solvent having a boiling point of 180 to 250° C. and a dispersion assistant solvent having a boiling point of 50 to 150° C., together with metal particles and tert-butyl alcohol as a main solvent.

Abstract: The present invention relates to a method for manufacturing a conductive metal thin film, including: preparing a conductive metal coating solution by adding carboxylic acid to a dispersion including a conductive metal particle having a core/shell structure; coating the conductive metal coating solution on a top portion of a substrate, heat-treating it, and removing an metal oxide layer of the surface of the conductive metal particle having the core/shell structure; and forming a thin film of the conductive metal particle from which the metal oxide layer is removed.

Abstract: The present invention relates to a method of producing electroconductive electroless plating powder having excellent dispersibility and adherence, and, more particularly, to a method of producing electroconductive electroless plating powder having excellent dispersibility and adherence, using an electroless plating method of forming a metal plating layer on the surface of a base material made of resin powder in an electroless plating solution, wherein an ultrasonic treatment is performed at the time of forming the plating layer. The present invention has advantages in that an aggregation phenomenon, which is generated when the base material made of the resin powder is plated using an electroless plating method, does not occur and a plating reaction can be performed at low temperature, so that it is possible to obtain a compact plating layer and plating powder having improved uniformity and adherence with respect to resin powder.

Abstract: There is provided a high efficient gas separation membrane of two or more layers, which comprises a separating layer of 3-dimensional nanostructure and a supporting layer, wherein the 3-dimensional nanostructure can maximize a surface area per unit permeation area.

Abstract: A method and an apparatus for providing various advertisements via a network, such as the Internet. The method includes receiving an advertisement from a sponsor and/or advertising agent, providing the advertisement to a user, calculating an advertisement commission according to the advertisement provided to the user; and demanding the advertisement commission from a sponsor and/or advertising agent. An access commission is calculated and demanded from a sponsor and/or advertising agent, when the user links to an advertisement-related site by means of the advertisement. The apparatus includes a storage device and a processor coupled to the storage device.