Abstract: The solder bonded body according to the present invention contains: an oxide body to be bonded having an oxide layer on the surface thereof; and a solder layer bonded to the oxide layer, which the solder layer is formed by an alloy containing at least two metals selected from the group consisting of tin, copper, silver, bismuth, lead, aluminum, titanium and silicon and having a melting point of lower than 450° C. and has a zinc content of 1% by mass or less.

Abstract: The invention provides a photovoltaic cell substrate that is a semiconductor substrate comprising an n-type diffusion layer, an n+-type diffusion layer having a higher n-type impurity concentration than the n-type diffusion layer, and a concave portion at a surface of the n+-type diffusion layer.

Abstract: The semiconductor substrate of the present invention contains a semiconductor layer and an impurity diffusion layer containing at least one impurity atom selected from the group consisting of an n-type impurity atom and a p-type impurity atom and at least one metallic atom selected from the group consisting of K, Na, Li, Ba, Sr, Ca, Mg, Be, Zn, Pb, Cd, V, Sn, Zr, Mo, La, Nb, Ta, Y, Ti, Ge, Te, and Lu.

Abstract: The invention provides an element including a semiconductor substrate and an electrode disposed on the semiconductor substrate, the electrode being a sintered product of a composition for an electrode that includes phosphorus-containing copper alloy particles, glass particles and a dispersing medium, and the electrode includes a line-shaped electrode having an aspect ratio, which is defined as electrode short length:electrode height, of from 2:1 to 250:1.

Abstract: The invention provides a material for forming a passivation film for a semiconductor substrate. The material includes a polymer compound having an anionic group or a cationic group.

Abstract: The present invention provides a paste composition for an electrode, the paste composition comprising phosphorus-containing copper alloy particles, tin-containing particles, glass particles, a solvent and a resin. The present invention also provides a photovoltaic cell element having an electrode formed from the paste composition, and a photovoltaic cell.

Abstract: The present invention provides a paste composition for an electrode, the paste composition including phosphorus-tin-containing copper alloy particles, glass particles, a solvent and a resin. The present invention also provides a photovoltaic cell element having an electrode formed from the paste composition, and a photovoltaic cell.

Abstract: A paste composition for an electrode, the paste composition comprising: phosphorous-containing copper alloy particles in which the content of phosphorous is from 6% by mass to 8% by mass; glass particles; a solvent; and a resin.

Abstract: The composition for forming an n-type diffusion layer in accordance with the present invention contains a donor element-containing glass powder and a dispersion medium. An n-type diffusion layer and a photovoltaic cell having an n-type diffusion layer are prepared by applying the composition for forming an n-type diffusion layer, followed by a thermal diffusion treatment.

Abstract: The composition for forming an n-type diffusion layer in accordance with the present invention contains a donor element-containing glass powder and a dispersion medium. An n-type diffusion layer and a photovoltaic cell having an n-type diffusion layer are prepared by applying the composition for forming an n-type diffusion layer, followed by a thermal diffusion treatment.

Abstract: The method for producing a photovoltaic cell includes applying an n-type diffusion layer forming composition including an n-type impurity-containing glass powder and a dispersion medium onto a first region on one surface side of a semiconductor substrate; applying a p-type diffusion layer forming composition including a p-type impurity-containing glass powder and a dispersion medium onto a second region other than the first region on the surface of the semiconductor substrate where the first region is provided; a thermal diffusion process in which an n-type diffusion layer and a p-type diffusion layer are formed by heat-treating the semiconductor substrate onto which the n-type diffusion layer forming composition and the p-type diffusion layer forming composition are applied; and forming an electrode on each of the first region where the n-type diffusion layer is formed and the second region where the p-type diffusion layer is formed, respectively.

Abstract: The method for producing a photovoltaic cell includes applying, on a partial region of one surface side of a semiconductor substrate, a first p-type diffusion layer forming composition including a p-type impurity-containing glass powder and a dispersion medium; applying, on at least a region other than the partial region on the surface of the semiconductor substrate, a second p-type diffusion layer forming composition which includes a p-type impurity-containing glass powder and a dispersion medium and in which a concentration of the p-type impurity is lower than that of the first p-type diffusion layer forming composition, where the first p-type diffusion layer forming composition is applied; heat-treating the semiconductor substrate on which the first p-type diffusion layer forming composition and the second p-type diffusion layer forming composition are applied to form a p-type diffusion layer; and forming an electrode on the partial region.

Abstract: The method for producing a photovoltaic cell includes applying, on a partial region of one surface side of a semiconductor substrate, a first n-type diffusion layer forming composition including an n-type impurity-containing glass powder and a dispersion medium; applying, on at least a region other than the partial region on the surface of the semiconductor substrate, a second n-type diffusion layer forming composition which includes an n-type impurity-containing glass powder and a dispersion medium and in which a concentration of the n-type impurity is lower than that of the first n-type diffusion layer forming composition, where the first n-type diffusion layer forming composition is applied; heat-treating the semiconductor substrate on which the first n-type diffusion layer forming composition and the second n-type diffusion layer forming composition are applied to form an n-type diffusion layer; and forming an electrode on the partial region.

Abstract: The paste composition for an electrode are constituted with copper-containing particles having a peak temperature of an exothermic peak showing a maximum area in the simultaneous ThermoGravimetry/Differential Thermal Analysis of 280° C. or higher, glass particles, a solvent, and a resin. Further, the photovoltaic cell has an electrode formed by using the paste composition for a photovoltaic cell electrode.

Abstract: A photosensitive resin composition comprising (a) a compound obtained by reacting a polybasic acid anhydride with the phenolic hydroxyl groups of a novolac-type phenol resin, and (b) a 1,2-quinonediazide compound. The photosensitive resin composition, which comprises component (b) composed of a 1,2-quinonediazide compound in combination with a component (a) obtained by reacting a polybasic acid anhydride with the phenolic hydroxyl groups of a novolac-type phenol resin, exhibits sufficiently high photosensitivity, image contrast, resolution and adhesiveness.

Abstract: In a method for producing a photovoltaic cell, the improvement comprising: 1) coating a portion of a semiconductor substrate with a layer of a composition comprising acceptor element-containing glass particles and a dispersion medium, and 2) heating the coated semiconductor substrate to a temperature sufficient to cause acceptor element diffusion from the glass particles into the semiconductor substrate so as to form an p-type diffusion region in the semiconductor substrate.

Abstract: The paste composition for an electrode according to the present invention includes metal particles containing copper as a main component, a flux, glass particles, a solvent, and a resin. Further, a photovoltaic cell according to the present invention has an electrode formed by using the paste composition for an electrode.

Abstract: The composition for forming a p-type diffusion layer in accordance with the present invention contains an acceptor element-containing glass powder and a dispersion medium. A p-type diffusion layer and a photovoltaic cell having a p-type diffusion layer are prepared by applying the composition for forming a p-type diffusion layer, followed by a thermal diffusion treatment.

Abstract: The composition for forming an n-type diffusion layer in accordance with the present invention contains a donor element-containing glass powder and a dispersion medium. An n-type diffusion layer and a photovoltaic cell having an n-type diffusion layer are prepared by applying the composition for forming an n-type diffusion layer, followed by a thermal diffusion treatment.

Abstract: The paste composition for an electrode are constituted with metal particles having copper as a main component, a phosphorous-containing compound, glass particles, a solvent, and a resin. Further, the photovoltaic cell has an electrode formed by using the paste composition for an electrode.