NOVELTY - The compound system for photovoltaic application, comprises a carrier film (2), a metal film (3), which is applied on the carrier film, and an optical transparent insulation layer (4), which is applied on the metal film, which is equipped with a surface texture. The insulation layer is equipped with a fastening agent, which is an adhesive. The carrier film consists of polyvinyl butyral, polyvinyl fluoride, ethylene vinyl acetate or plastic with comparable thermal and physical characteristics. The metal film consists of copper, aluminum or silver or tin alloy or plated tin film.    USE - Compound system useful for photovoltaic application.    ADVANTAGE - The compound system can be economically manufactured with improved radiation- and weather-resistance.    DETAILED DESCRIPTION - The compound system for photovoltaic application, comprises a carrier film (2), a metal film (3), which is applied on the carrier film, and an optical transparent insulation layer (4), which is applied on the metal film, which is equipped with a surface texture. The insulation layer is equipped with a fastening agent, which is an adhesive. The carrier film consists of polyvinyl butyral, polyvinyl fluoride, ethylene vinyl acetate or plastic with comparable thermal and physical characteristics. The metal film consists of copper, aluminum or silver or tin alloy or plated tin film. The thickness of the metal film is 10-20 mu m and is provided with a layer that increases the reflection. The layer is silicon dioxide and/or titanium dioxide. The layer on the metal film has a reflection of greater than 80% in wavelength range of 300-1000 nm. The surface texture consists of three-dimensional, regular or irregular structures from pyramids or hemispheres. The texture has an accidental height distribution of 5-10 mu m and/or pyramids with a vertical angle of less than 140 degrees . The metal film has a conductor path structure. The optical insulation layer consists of an optical transparent or electrical insulating material such as plastic or synthetic resin such as epoxide resin or of sol-gel-layer or dielectric layer, and/or has a refractive index of greater than 1.6 in the wavelength range of 400-1000 nm.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic cross-sectional view of a compound system.    Carrier film (2)    Metal film (3)    Insulation layer (4)    Active layer (5)    Light fall. (7)