SOLAR CELL SEALING MATERIAL, AND SOLAR CELL MODULE

摘要

Disclosed is an encapsulating material for solar cell containing an ethylene/±-olefin copolymer satisfying the following requirements (a1) to (a4) : (a1) the content ratio of structural units derived from ethylene is from 80 to 90 mol% and the content ratio of structural units derived from ±-olefin having 3 to 20 carbon atoms is from 10 to 20 mol%; (a2) MFR is from 10 to 50 g/10 minutes as measured under the conditions of a temperature of 190 degrees centigrade and a load of 2.16 kg in accordance with ASTM D1238; (a3) the density is from 0.865 to 0.884 g/cm 3 as measured in accordance with ASTM D1505; and (a4) the shore A hardness is from 60 to 85 as measured in accordance with ASTM D2240.