TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Component: The agent (B) contains inorganic substance chosen from metal oxide, gold and silver. The metal oxide is indium oxide, tin oxide, zinc oxide, magnesium oxide, antimony oxide, and metal oxide complexed with 2 or more types of metal. The inorganic substance is ultrafine powder of particle size 1 microns or less.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The composition (C) contains a crosslinking agent, crosslinking adjuvant and/or photosensitizer, a silane coupling agent and ultraviolet absorber. A layer of crosslinkable resin composition (D) comprising ethylene based copolymer (A-2) of ethylene unit content 55-90 wt.%, and which does not contain the selection agent (B) is laminated to the layer of composition (C). The composition (D) contains crosslinking agent, crosslinking adjuvant, photosensitizer, silane coupling agent and ultraviolet absorber. The copolymer (A-1) and (A-2) is ethylene-vinyl-acetate copolymer having melt flow rate of 1-100 g/10 minutes according to JIS K 7210-1999 at 190degreesC and 2160 g load, and vinyl acetate unit content of 10-45 wt.%, or ethylene-acrylic-ester copolymer having melt flow rate of 1-100 g/10 minutes according to JIS K 7210-1999 at 190degreesC and 2160 g load, and acrylic ester unit content of 10-45 wt.%. The thickness ratio of layer (C) and layer (D), is 1/99-90/10. Preferred Agent: The solar cell sealing agent is a sheet type. EXAMPLE - A master batch of ethylene vinyl acetate (EVA) containing 10 wt.% of indium tin oxide, was prepared. The master batch (in g) (1500), crosslinking agent (60) and KBM503 (silane coupling agent) were mixed, and left for impregnation. The pellets were molded at 150degreesC, and a film (c) of thickness 0.05 mm, was produced. Similarly, EVA resin pellet (5000) and crosslinking agent (60) were mixed and formed into a sheet of thickness 0.5 mm similarly. The two films were bonded at 150degreesC for 50 minutes. The obtained bonded film had transmittance of 88% at 650 nm, and 4% at 2000 nm.