TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The layers (11)-(13) comprises silane adhesion promoter, metal and/or metal oxide surfaces such as glass and/or organic peroxide initiators. The layer (11) contains virgin material. The layer (13) and/or (12) comprises a portion of recycled material.    TECHNOLOGY FOCUS - POLYMERS - Preferred Layers: The layers (11)-(13) are transparent. The multilayered film further contains opaque layer(s) containing diffuse reflective pigments, and has reflective efficiency of 75% or less for light having wavelength of 400-800 nm, measured by ASTM E 903. The thickness of opaque layer is 30-500 mu m. Preferred Composition: The layers (11)-(13) contain 18 %mass ethylene-vinyl acetate copolymer. The difference of melting point between the outer polymer layer and any one of the polymer layers is 10 degrees C. The melting point of the outer polymer layer is 10-100 degrees C. The layer (11) and layer (12) have melting point of 10 degrees C or less which is lower than the melting point of layer (13). The layers (11), (13) and (12) contains luminescence downshifting compound for partially absorbing radiation having preset wavelength and re-emitting radiation at longer wavelength than the wavelength of the absorbed radiation. The layer (13) consists of optionally functionalized polyolefin, optionally functionalized polyolefin co- or terpolymer, optionally hydrogenated polystyrene block copolymer with butadiene, isoprene and/or ethylene copolymers, polymethacrylate polyacrylate block copolymer, polyolefin and olefin copolymer with copolymerizable functionalized monomers such as methacyrylic acid. The difference of melt flow index of layer (13) to melt flow index of layer (12) and/or layer (11) is 0.5-10 at Tl, where Tl is lamination temperature of photovoltaic modules. The melt flow index of layer (13) at the extrusion temperature is -2 to 2. The melt flow index of layers (11) and/or (12) at extrusion temperature is equal or higher to the melt flow index of the layer (13). The encapsulating material comprises ethylene vinyl acetate co-polymer. The polymer film consists of bioriented partly aromatic polyester and an adhesion promoting layer enhancing the adhesion of the polyester film to the encapsulant layers. The multilayered backsheet comprises protective layer containing fluoropolymer. Preferred Process: The polymer layers are coextruded to form film. The extruded film obtained in manufacture of multilayered film is trimmed with respect to width and/or length, resized, master batches are prepared from polymer layer and shaped.