Solar cell sealing film and solar cell using the same

摘要

The present invention provides a solar cell sealing film in which the shrinkage is prevented when heated. The solar cell sealing film 13A, 13B comprises a resin mixture of an ethylene-vinyl acetate copolymer and polyethylene, and an organic peroxide. The mass ratio (EVA:PE) of the ethylene-vinyl acetate copolymer (EVA) to the polyethylene (PE) is 8:2 to 3:7 and the melting point of the resin mixture (temperature at a viscosity of 30,000 Pa·s) is 80 to 105° C.

主权项

1. A solar cell sealing film comprising,
a resin mixture of an ethylene-vinyl acetate copolymer and a polyethylene, and an organic peroxide, wherein a mass ratio (EVA:PE) of the ethylene-vinyl acetate copolymer (EVA) to the polyethylene (PE) in the resin mixture is 8:2 to 3:7, wherein a melting point of the resin mixture, which is a temperature at a viscosity of 30,000 Pa·s, is 80 to 105° C., and wherein the polyethylene is a low density polyethylene (LDPE) having a density of 0.910 g/cm3 or more and less than 0.930 g/cm3, or a liner low density polyethylene (LLDPE) having density of 0.910 g/cm3 to 0.940 g/cm3.