SOLAR CELL BACKSHEET

摘要

A solar cell backsheet is disposed to contact a sealing material on a cell side of a substrate at which solar cell elements are sealed with the sealing material, and includes a support that satisfies Equation (1) and an adhesive layer including a binder and inorganic fine particles in an amount of from 50% to 200% by volume of the total volume of the binder, peeling strength between the sealing material and the adhesive layer being 10 N/20 mm or more after the solar cell backsheet is stored in an 85°C and 85% RH atmosphere for 1,000 hours. Equation (1): 1.0 > (ELBA) / (ELBB) > 0.5 (ELBA and ELBB respectively denote elongation at break after and before 50 hours of storage in a 120°C and 100% RH atmosphere.) The backsheet has excellent adhesion to a sealing material in a wet and hot environment.