Abstract: To provide a low refractive index film-forming composition for forming a low refractive index film which has a low refractive index, produces a strong antireflection effect, exhibits excellent adhesiveness with respect to a substrate, and is excellent in water repellency or antifouling properties of the coat surface; a production method of the composition; and a method for forming a low refractive index film. The low refractive index film-forming composition is prepared by generating a hydrolysate of (A) a silicon alkoxide by mixing the (A) silicon alkoxide with (B) water, (C) an inorganic acid or an organic acid, and (D) an organic solvent at a predetermined ratio, and mixing the hydrolysate with (E) silica sol, which is obtained by dispersing fumed silica particles in a liquid medium, at a predetermined ratio.

Abstract: A conductive paste includes: a silver-coated resin; and an organic vehicle that includes a thermosetting resin composition, a curing agent, and a solvent, in which the thermosetting resin composition is an epoxy resin composition which is solid at room temperature and has a melt viscosity of 0.5 Pa·s or lower at 150° C., and a mass ratio of a content of the thermosetting resin composition to a content of the silver-coated resin is 10 to 40:60 to 90.

Abstract: A composition for manufacturing an electrode of a solar cell, comprising metal nanoparticles dispersed in a dispersive medium, wherein the metal nanoparticles contain silver nanoparticles of 75 weight % or more, the metal nanoparticles are chemically modified by a protective agent having a main chain of organic molecule comprising a carbon backbone of carbon number of 1 to 3, and the metal nanoparticles contains 70% or more in number-average of metal nanoparticles having a primary grain size within a range of 10 to 50 nm.

Abstract: A low refractive index film-forming composition and a low refractive index film are prepared with a method in which fluoroalkyl group-containing silicon alkoxide (B) is mixed with silicon alkoxide (A) to obtain a mixture; water (C), formic acid (D), and an organic solvent (E) are mixed with the mixture to produce a hydrolysate of the mixture; and silica sol (F) obtained by dispersing beaded colloidal silica particles in a liquid medium is mixed with the hydrolysate.

Abstract: The present invention aims to provide a method for producing a dispersion of metal nanoparticles which enables to control the shape and the particle diameter over a wide range, a dispersion of metal nanoparticles having superior dispersion stability, and a method for producing the same. In addition, the present invention further aims to provide a dispersion of metal nanoparticles which has a volume resistivity of 2×10?6 to 6×10?6 ?·cm and is suitable for use as an electrically conductive material, and a method for producing the same. Moreover, the present invention further aims to provide a method for synthesizing metal nanoparticles which can produce metal nanoparticles suitable for use as electrically conductive materials by synthesizing the metal nanoparticles from a insoluble metal salt which is free of corrosive materials.

Abstract: The present invention aims to provide a method for producing a dispersion of metal nanoparticles which enables to control the shape and the particle diameter over a wide range, a dispersion of metal nanoparticles having superior dispersion stability, and a method for producing the same. In addition, the present invention further aims to provide a dispersion of metal nanoparticles which has a volume resistivity of 2×10?6 to 6×10?6 ?·cm and is suitable for use as an electrically conductive material, and a method for producing the same. Moreover, the present invention further aims to provide a method for synthesizing metal nanoparticles which can produce metal nanoparticles suitable for use as electrically conductive materials by synthesizing the metal nanoparticles from a insoluble metal salt which is free of corrosive materials.

Abstract: A liquid composition for forming a silica porous film of the invention is prepared by mixing a hydrolyzate of tetramethoxysilane or tetraethoxysilane as a silicon alkoxide with a silica sol in which fumed silica particles having primary particles having a mean particle diameter of 40 nm or less and secondary particles having a mean particle diameter of 20 nm to 400 nm, that is greater than the mean particle diameter of the primary particles, are dispersed in a liquid medium, in which the mass ratio (AB) of the SiO2 content (B) of the silica sol to the SiO2 content (A) in the hydrolyzate is in a range of 1/99 to 60/40.

Abstract: An object of the present invention is to provide a transparent electroconductive film, which in addition to satisfying each of the requirements of favorable phototransmittance, high electrical conductivity, low refractive index and the like required when using in a multi-junction solar cell, enables running costs to be reduced since the transparent electroconductive film is produced without using a vacuum deposition method. The transparent electroconductive film for a solar cell of the present invention is provided between photoelectric conversion layers of a multi-junction solar cell, a coated film of fine particles formed by coating using a wet coating method is baked, the electroconductive component in the base material that composes the electroconductive film is present within the range of 5 to 95% by weight, and the thickness of the electroconductive film is within the range of 5 to 200 nm.

Abstract: An ITO film having a band gap in a range of 4.0 eV to 4.5 eV.

Abstract: A composition for manufacturing an electrode of a solar cell, comprising metal nanoparticles dispersed in a dispersive medium, wherein the metal nanoparticles contain silver nanoparticles of 75 weight % or more, the metal nanoparticles are chemically modified by a protective agent having a main chain of organic molecule comprising a carbon backbone of carbon number of 1 to 3, and the metal nanoparticles contains 70% or more in number-average of metal nanoparticles having a primary grain size within a range of 10 to 50 nm.

Abstract: A composition for manufacturing an electrode of a solar cell, comprising metal nanoparticles dispersed in a dispersive medium, wherein the metal nanoparticles contain silver nanoparticles of 75 weight % or more, the metal nanoparticles are chemically modified by a protective agent having a main chain of organic molecule comprising a carbon backbone of carbon number of 1 to 3, and the metal nanoparticles contains 70% or more in number-average of metal nanoparticles having a primary grain size within a range of 10 to 50 nm.

Abstract: An ITO film having a band gap in a range of 4.0 eV to 4.5 eV.

Abstract: A conductive reflective film has a silver nanoparticle-sintered film with a surface coating composition containing a hydrolysate of a metal alkoxide wet-coated thereto. The coated film is then fired. Also provided is a method of manufacturing the conductive reflective film comprising the steps of coating a surface coating composition containing a hydrolysate of a metal alkoxide on a silver nanoparticle-sintered film using a wet coating method, and firing the silver nanoparticle-sintered film having the coated film. The conductive reflective film provides improved adhesion properties with respect to a base material while maintaining a high reflectivity and a high conductivity of a silver nanoparticle-sintered film.

Abstract: Disclosed is a molecular library comprising a group of a plurality of molecules, wherein each member of the library is a polypeptide having a randomized sequence moiety and a microprotein moiety. The microprotein is a protein comprising an amino acid sequence of 30 or less amino acid residues having the ability to form a particular conformation by spontaneous folding in a solution and is, for example, chignolin comprising the amino acid sequence represented by SEQ ID NO: 1. Also, disclosed is a method for identifying a novel functional molecule using the library of the present invention.

Abstract: To provide a low refractive index film-forming composition for forming a low refractive index film which has a low refractive index, produces a strong antireflection effect, exhibits excellent adhesiveness with respect to a substrate, and is excellent in water repellency or antifouling properties of the coat surface; a production method of the composition; and a method for forming a low refractive index film. The low refractive index film-forming composition is prepared by generating a hydrolysate of (A) a silicon alkoxide by mixing the (A) silicon alkoxide with (B) water, (C) an inorganic acid or an organic acid, and (D) an organic solvent at a predetermined ratio, and mixing the hydrolysate with (E) silica sol, which is obtained by dispersing fumed silica particles in a liquid medium, at a predetermined ratio.

Abstract: The present invention aims to provide a method for producing a dispersion of metal nanoparticles which enables to control the shape and the particle diameter over a wide range, a dispersion of metal nanoparticles having superior dispersion stability, and a method for producing the same. In addition, the present invention further aims to provide a dispersion of metal nanoparticles which has a volume resistivity of 2×10?6 to 6×10?6?.cm and is suitable for use as an electrically conductive material, and a method for producing the same. Moreover, the present invention further aims to provide a method for synthesizing metal nanoparticles which can produce metal nanoparticles suitable for use as electrically conductive materials by synthesizing the metal nanoparticles from a insoluble metal salt which is free of corrosive materials.

Abstract: A metal-film forming method of the present invention includes a surface activation process of irradiating a laser beam to the surface of the base metal, thereby activating the surface of the basemetal, a noble-metal nanoparticle dispersion liquid coating process of coating the surface of the base metal with a noble-metal nanoparticle dispersion liquid, a solvent thereof, containing noble-metal nanoparticles in as-dispersed state, and a noble-metal nanoparticle sintering process of irradiating the laser beam to the noble-metal nanoparticle dispersion liquid coated on the surface of the base metal, thereby causing the noble-metal nanoparticles to be sintered. Further, a scudding press process of executing press forming of a base metal, and the metal-film forming process of applying noble-metal plating to the surface of the base metal are executed on the same line.

Abstract: A composite film for a superstrate solar cell or a substrate solar cell has a transparent conductive film and a conductive reflective film, wherein the transparent conductive film is formed by using a wet coating method to apply a transparent conductive film composition or dispersion containing microparticles of a conductive oxide, the conductive reflective film is formed by using a wet coating method to apply a conductive reflective film composition containing metal nanoparticles, the average diameter of holes occurring at the contact surface of the conductive reflective film on either the side of the photovoltaic layer or the side of the transparent conductive film is not more than 100 nm, the average depth at which the holes are positioned is not more than 100 nm, and the number density of the holes is not more than 30 holes/?m2.

Abstract: A composition for electrode formation containing metal nanoparticles dispersed in a dispersion medium, wherein the composition also comprises one or more organic polymers selected from the group consisting of polyvinylpyrrolidones, polyvinylpyrrolidone copolymers, polyvinyl alcohols, and cellulose ethers.

Abstract: A composition for manufacturing an electrode of a solar cell, comprising metal nanoparticles dispersed in a dispersive medium, wherein the metal nanoparticles contain silver nanoparticles of 75 weight % or more, the metal nanoparticles are chemically modified by a protective agent having a main chain of organic molecule comprising a carbon backbone of carbon number of 1 to 3, and the metal nanoparticles contains 70% or more in number-average of metal nanoparticles having a primary grain size within a range of 10 to 50 nm.