TECHNOLOGY FOCUS - ELECTRONICS - Preferred Component: The solar cell module is obtained by sealing the solar cell element using the solar cell sealing agent which contains inorganic pigment, or the solar cell sealing agent which does not contain inorganic pigment.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The crosslinking agent is an organic peroxide having one hour half-life temperature of 100-150degreesC. The compound having two or more allyl groups is triaryl isocyanurate or diallyl phthalate.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The ethylene-polar monomer copolymer is chosen from ionomer of ethylene-unsaturated carboxylic acid copolymer, ethylene vinyl acetate copolymer, ethylene-unsaturated carboxylic acid ester copolymer and/or ethylene-unsaturated carboxylic acid copolymer. The solar cell sealing agent is obtained by crosslinking the crosslinkable ethylene copolymer composition. Preferred Composition: The ethylene-vinyl acetate copolymer contains vinyl acetate content of 10-40 wt.%. The crosslinkable ethylene copolymer composition further contains a titanium oxide as an inorganic pigment (0.5-50) with respect to the ethylene-polar monomer copolymer (100), a crosslinking agent, a compound having two or more allyl groups as a crosslinking adjuvant, and an additive chosen from ultraviolet absorber, optical stabilizer and antioxidant. EXAMPLE - Ethylene-vinyl acetate copolymer (in wt.pts) (5000) having vinyl acetate content of 28 wt.% and melt flow rate of 15 g/10 minute, Lupasol 101 (2,5-dimethyl-2,5-bis(tert-butyl peroxy)hexane as crosslinking agent having one hour half life temperature of 140degreesC) (60), and KBM503 (gamma-methacryloxy propyl trimethoxy silane as silane coupling agent) (5), were mixed to obtain a crosslinkable ethylene copolymer composition. The obtained composition had gel fraction of 83%. A crosslinked sheet obtained using the composition, had volume resistivity of 2.5x1015 Omega at initial stage, and 7.03x1014 Omega after maintaining for 3 weeks at 85degreesC and relative humidity of 85%.