Solar cell backsheet and method for preparing same

A solar cell backsheet, comprising:

• a substrate layer having a first surface and an opposing second surface, the substrate layer is metal, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or polybutylene terephthalate (PBT);
• a first and second blended resin layer, each blended resin layer comprising a fluorine-based resin and a (meth)acrylic-based copolymer resin including a (meth)acrylic-based monomer
• and a maleimide-based monomer, the first blended resin layer formed on the first
• surface of the substrate layer, and the second blended resin layer formed on the second surface of the substrate layer;
• and
• an adhesive layer between the substrate layer and each of the blended resin layers,
• wherein each adhesive layer includes a polyurethane adhesive,
• wherein the amount of the (meth)acrylic-based monomer is 50 to 99 wt %, and the amount of the maleimide-based monomer is 1 to 50 wt % based on 100 wt % of the (meth)acrylic-based copolymer,
• wherein the maleimide-based monomer of the blended resin layer comprises at least one selected from the group of N-cyclohexylmaleimide, N-phenylmaleimide, N-methylmaleimide, N-butylmaleimide, N-benzylmaleimide, and N-pyrenylmaleimide, and
• wherein the amount of the fluorine-based resin is 75 to 99 wt %, and the amount of the (meth)acrylic-based copolymer is 1 to 25 wt % based on 100 wt % of the blended resin layer.