Resin composition for solar cell-sealing material

摘要

Disclosed is a resin composition for a solar cell-sealing material, which enables the improvement in initial conversion efficiency of a solar cell module, the prevention of the deterioration in transparency of a resin, the prevention of the deterioration in adhesion to a protective member as time elapsed, and the prevention of the reduction in conversion efficiency. The resin composition comprises an ethylene copolymer and at least one substance selected from (i) a compound represented by formula (1), (ii) a burned product of the substance (i), (iii) a compound represented by formula (2) and (iv) a burned product of the substance (iii). The substance (i) has an average plate surface diameter of 0.01 to 0.9 μm and a refractive index of 1.45 to 1.55, and the substance (iii) has an average plate surface diameter of 0.02 to 0.9 μm and a refractive index of 1.48 to 1.6. Mg·Al(OH)·An ·bHO ··· formula (1) (0.2 ≤ a ≤ 0.35, 0 ≤ b ≤ 1, An: an anion having a valency of n) (MMg)·Al(OH)·Bm ·eHO ··· formula (2) (M represents a metal selected from Ni, Zn and Ca, 0.2 ≤ c ≤ 1, 0.2 ≤ d ≤ 0.4, 0 ≤ e ≤ 4, Bm: an anion having a valency of m)