| abstract |
Provided is a polyester film for sealing the backside of a solar cell, which has excellent light reflection properties and durability, while exhibiting good electrical insulation. Specifically provided is a polyester film for sealing the backside of a solar cell, which has a light reflectance at a wavelength of 550 nm of 50% or more and contains 3-50% by mass of inorganic fine particles. The polyester film for sealing the backside of a solar cell is characterized by having an acid value of 1-30 eq/ton and a limiting viscosity of 0.60-0.80 dL/g. |