TECHNOLOGY FOCUS - ELECTRONICS - Preferred Component: The solar cell module has light-receiving surface containing organic peroxide and sealing material (2) containing ethylene-vinyl acetate copolymer as main component.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Component: The compound (C) has 2 or more (meth)acryloyl group in a molecule. The polyisocyanate compound (B) is block forming polyisocyanate (B1).    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The component (A) is acryl-type copolymer (A1) which has carbon-carbon double bond and (meth)acryloyl group or acryl-type copolymer (A2) which does not have (meth)acryloyl group. The agent further contains compound (C) which has (meth)acryloyl group. The (meth)acrylic-type copolymer (A1) is copolymer chosen from (meth)acrylic-type copolymers (A1-1) to (A1-4). The (meth)acrylic-type copolymer (A1-1) is a copolymer of (meth)acrylic-type monomer (a1) which has glycidyl group, (meth)acrylic-type monomer (a2) which has hydroxyl group, (meth)acrylic-type monomer (a4) which has glycidyl group, hydroxyl group or carboxyl group and (meth)acrylic-type monomer (a3) which has carboxyl group. The (meth)acrylic-type copolymer (A1-2) is copolymer of (meth)acrylic-type monomer (a3) which has a carboxyl group, (meth)acrylic-type monomer (a2) which has a hydroxyl group, (meth)acrylic-type monomer (a4) which has glycidyl group, hydroxyl group or carboxyl group, and (meth)acrylic-type monomer (a1) which has glycidyl group. The (meth)acrylic-type copolymer (A1-3) is a copolymer of (meth)acrylic-type monomer (a2) which has hydroxyl group, (meth)acrylic-type monomer (a5) which has an isocyanate group and (meth)acrylic-type monomer (a6) which does not have a hydroxyl group. The (meth)acrylic-type copolymer (A1-4) is a copolymer of maleic anhydride and acryl-type monomer (a2) which has hydroxyl group, acryl-type monomer (a2) which has hydroxyl group and acryl-type monomer (a6) which does not have hydroxyl group. The content of (meth)acrylic-type copolymer (A2) is 0.1-20 pts. wt. with respect to 100 pts. wt. compound (C).