NOVELTY - Solar cell concentrator structure comprises an outside surface; an inside surface; a first concentrator element; a second concentrator element; a separation region; and a refractive index.    USE - The solar cell concentrator structure is useful for manufacturing solar cell (claimed).    ADVANTAGE - The structure improves solar devices.    DETAILED DESCRIPTION - Solar cell concentrator structure comprises an outside surface; an inside surface, the inside surface being substantially flat; a first concentrator element integrally formed on the outside surface, the first concentrator element having a first curved surface, the curved surface being characterized by a radius of at least 1 mm, the curved surface having a first flat region of at least 0.25 mm, the flat region being at least 2 mm from the inside surface; a second concentrator element integrally formed with the first concentrator element and the outside surface, the second concentrator element including a second curved surface and a second flat region; a separation region provided between the first concentrator element and the second concentrator element, the separation region being characterized by a width of at least 2 mm separating the first flat region from the second flat region; and a refractive index of about 1 characterizing the separation region. An INDEPENDENT CLAIM is a method for manufacturing a solar cell comprising: providing a piece of glass material, the piece of glass material being substantially flat, the piece of glass having a first surface and a second surface; providing a pattern for forming concentrator elements on the piece of glass material; overlaying the piece of glass on the pattern, the first surface contacting the pattern; subjecting the piece of glass to a high temperature; forming a first concentrator element and a second concentrator on the first surface, the first concentrator element having a first curved surface, the first curved surface being characterized by a radius of curvature of at least 1 mm, the curved surface having a first flat region of at least 0.25 mm, the flat region being at least 4 mm from the inside surface; providing a first photovoltaic strips (901, 902) and a second photovoltaic strips (901, 902) on the second surface of the piece of class material; the first photovoltaic strips (901, 902) and the second photovoltaic strips (901, 902) being respectively aligned to the first concentrator element and the second concentrator element; and providing a back cover.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the solar cell concentrator structure.    Photovoltaic strips (901, 902)