NOVELTY - A laminated film comprises a polyester substrate having surface (a) and surface (b) comprising polymers chosen from poly(2-6C)alkylene phthalate and poly(2-6C)alkylene naphthalate, an adhesive layer on the surface (a) of the polyester substrate, a bonding layer bonded to the surface (b) of the polyester substrate and a protective layer on the adhesive layer. The bonding layer comprises copolymer of ethylene and one or more monomers chosen from 1-4C alkyl acrylate, 1-4C alkyl methacrylate, methacrylic acid, acrylic acid, glycidyl methacrylate, and maleic anhydride.    USE - Laminated film used for manufacture of solar module e.g. thin-film solar cell module (all claimed).    ADVANTAGE - The laminated film has excellent moisture and oxygen barrier properties, and bonding strength. The solar cell module using laminated film has excellent durability.    DETAILED DESCRIPTION - A laminated film comprises a polyester substrate having a surface (a) and a surface (b) comprising polymers chosen from poly(2-6C)alkylene phthalate and poly(2-6C)alkylene naphthalate, an adhesive layer on the surface (a) of the polyester substrate, a bonding layer bonded to the surface (b) of the polyester substrate and a protective layer on the adhesive layer comprising a fluoropolymer with a tensile modulus of 150 Kpsi or more. The bonding layer comprises copolymer of ethylene and one or more monomers chosen from 1-4C alkyl acrylate, 1-4C alkyl methacrylate, methacrylic acid, acrylic acid, glycidyl methacrylate, and maleic anhydride. INDEPENDENT CLAIMS are included for the following:    (1) solar cell module, which comprises front sheet, one or more solar cells encapsulated with polymeric material, and back sheet, where one or both of the front and back sheet is made of the laminated film;    (2) thin-film solar cell module, which comprises thin-film solar cell(s) deposited on glass sheet, polymer sheet or stainless steel sheet, polymeric encapsulant laminated on the thin-film solar cell(s) and back sheet or front sheet laminated on the encapsulant; and    (3) manufacture of solar module, which involves adhering protective layer to the surface (a) of the polyester substrate with an adhesive, extruding bonding layer on surface (b) of the polyester substrate, providing one or more solar cells encapsulated with polymeric encapsulant material and positioning the bonding layer opposite to the polymeric encapsulant material and applying heat and pressure to the bonding layer and the polymeric encapsulant material, such that polyester substrate is bonded to the polymeric encapsulant material.