Patent ID: 9193854
Filing Date: 2015-11-24
Classification: C08L,H01L,Y02E

Abstract:
1. An encapsulating material for solar cell made of a resin composition containing a crosslinkable resin and satisfying the following 1) and 2): 1) when the encapsulating material for solar cell is immersed in acetone at 23° C. for one hour after a crosslinking treatment in which the encapsulating material for solar cell is heated and depressurized at 150° C. and 250 Pa for three minutes, and then is heated and pressurized at 150° C. and 100 kPa for 15 minutes, an acetone-absorbing ratio is in a range of 3.5 weight % to 12.0 weight % with respect to a weight of the crosslinking-treated encapsulating material for solar cell, and 2) a volume resistivity of the crosslinking-treated encapsulating material for solar cell, which is based on JIS K6911 and measured at a temperature of 100° C. with an applied voltage of 500 V, is in a range of 1.0×10 wherein the crosslinkable resin contains an ethylene/a-olefin copolymer and an ethylene/polar monomer copolymer, a content of the ethylene/a-olefin copolymer in the crosslinkable resin is in a range of 50 parts by weight to 99 parts by weight with respect to 100 parts by weight of the crosslinkable resin, and a content of the ethylene/polar monomer copolymer in the crosslinkable resin is in a range of 1 part by weight to 50 parts by weight with respect to 100 parts by weight of the crosslinkable resin.