Abstract: A tin-plated copper terminal material in which on a substrate made of copper or copper alloy, a nickel-or-nickel-alloy layer, a copper-tin alloy layer, and a tin layer are laminated in this order; in this material, the tin layer has an average thickness 0.2 ?m to 1.2 ?m inclusive; the copper-tin alloy layer is a compound alloy layer in which Cu6Sn5 is a main ingredient and part of copper in the Cu6Sn5 is substituted with nickel, and an average crystal grain size is 0.2 ?m to 1.5 ?m inclusive; part of the copper-tin alloy layer appears on a surface of the tin layer and tin solidification parts exist like islands; and the tin solidification parts have an average diameter 10 ?m to 1000 ?m inclusive in a direction along the surface of the tin layer and an area ratio to the surface of the tin layer 1% to 90% inclusive.

Abstract: A tin-plated copper terminal material in which on a substrate made of copper or copper alloy, a nickel-or-nickel-alloy layer, a copper-tin alloy layer, and a tin layer are laminated in this order; in this material, the tin layer has an average thickness 0.2 ?m to 1.2 ?m inclusive; the copper-tin alloy layer is a compound alloy layer in which Cu6Sn5 is a main ingredient and part of copper in the Cu6Sn5 is substituted with nickel, and an average crystal grain size is 0.2 ?m to 1.5 ?m inclusive; part of the copper-tin alloy layer appears on a surface of the tin layer and tin solidification parts exist like islands; and the tin solidification parts have an average diameter 10 ?m to 1000 ?m inclusive in a direction along the surface of the tin layer and an area ratio to the surface of the tin layer 1% to 90% inclusive.

Abstract: A light emitting element having a light emitting layer, an electro-conductive reflection film that reflects light emitted from the light emitting layer and a substrate in this order, wherein the electro-conductive reflection film contains metal nanoparticles.

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: A light emitting element having a light emitting layer, an electro-conductive reflection film that reflects light emitted from the light emitting layer and a substrate in this order, wherein the electro-conductive reflection film contains metal nanoparticles.