Sheet for a photovoltaic cell

摘要

A sheet for a photovoltaic cell is provided. The sheet for a photovoltaic cell has excellent heat resistance, lightfastness, weather resistance, moisture resistance and insulating properties, and may improve light condensing efficiency when applied to a photovoltaic module.

主权项

1. A photovoltaic module, comprising:
a backsheet for a photovoltaic cell that comprises a resin layer, the resin layer comprising a silicone resin which comprises an aryl group bound to a silicon atom, and of which a molar ratio of the aryl group with respect to the total silicon atoms in the silicone resin is of greater than 0.3; a front substrate; and an encapsulant that encapsulates a photoelectric transformation element between the backsheet and the front substrate, wherein the silicone resin is formed from a hydrosilylation curable composition and wherein the silicone resin is represented by an average composition formula of Formula 1 and wherein the silicone resin comprises a siloxane unit of Formula 5 and a siloxane unit of Formula 6:
(R3SiO1/2)a(R2SiO2/2)b(RSiO3/2)c(SiO4/2)d  [Formula 1] wherein R's are substituents directly bound to a silicon atom, and independently represent hydrogen, a hydroxy group, an epoxy group, an acryloyl group, a methacryloyl group, an isocyanate group, an alkoxy group or a monovalent hydrocarbon group, with the provision that at least one of the R's represents an aryl group and at least one of the R's represents an epoxy group; a is between 0 and 0.6, b is between 0 and 0.97, c is between 0 and 0.8, and d is between 0 and 0.4, with the provision that a+b+c+d is 1, and b and c are not 0 simultaneously,
(C6H5)2SiO2/2  [Formula 5](C6H5)SiO3/2.  [Formula 6]