NOVELTY - The roof panel has a solar cell panel (110) comprising solar cell modules (100) to be electrically connected and arranged on an inner part of an upper surface of a vehicle body. A sticking element protects the solar cell panel from impact when the solar cell panel comprising sticking characteristics is inserted and laminated on the inner part of the upper surface of the body. The solar cell panel comprises a substrate, which is a flexible glass or plastic substrate with thickness of about 0.01-1 mm, and is deflectable based on curved shape of the upper surface of the body.    USE - Roof panel for a vehicle. Uses include but are not limited to motor vehicles i.e. passenger automobiles e.g. sports utility vehicles (SUV), buses, lorries, various commercial vehicles, watercrafts e.g. boats and ships, aircrafts, and hybrid vehicles e.g. gasoline-powered and electric-powered vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, fuel cell vehicles and alternative fuel vehicles.    ADVANTAGE - The solar cell panel is attached to an interior side of the vehicle when the substrate is glass substrate with minimal thickness used to maximize interior space, and thickness of the solar cell panel is decreased by using a thin film transparent substrate so as to minimize increase in weight of the roof panel. The solar cell panel is applied to the roof panel for the vehicle without changing design of the vehicle, so that manufacturing costs can be reduced. The roof panel can scatter light entering the solar cell panel when the scattering layer is formed in the solar cell panel, so that loss of light directly exiting to an exterior of the solar cell panel can be reduced, thus improving efficiency of a solar cell.    DETAILED DESCRIPTION - The upper surface of the vehicle body is a vehicle sunroof (S) or panorama roof.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a vehicle sunroof with a solar cell module to be mounted.    Vehicle sunroof (S)    Comprising solar cell modules (100)    Solar cell panel (110)