The present invention provides for a multi-layered structure adapted to be applied to the surface of a back-contact back-sheet for a photovoltaic module comprising back-contact solar cells. The multi-layered structure comprises a non-extendible intermediate layer (240) comprised of a dielectric material. The multi-layered structure further comprises an upper layer (280) of an encapsulating material coupled to the upper surface (242) of the intermediate layer, as well as a lower layer (270) of a thermo-adhesive material coupled to the lower surface (244) of the intermediate layer (240). The multi-layered structure also has a plurality of through-holes pierced at predetermined positions.