NOVELTY - A solar cell (200) in a sheet form comprises cured resin layer (40), substrate (10) containing resin provided on layer (40), photoelectric conversion layer (100) provided on the substrate, and cured resin layer (9) provided on the layer (100). The linear expansion coefficient of the cured resin contained in the layer (40) is not less than the linear expansion coefficient of a cured resin contained in the resin layer (9). The linear expansion coefficient of the resin layer (9) is more than the linear expansion coefficient of the substrate.    USE - Solar cell in sheet form is used in electronic devices e.g. wristwatches or portable calculators as power sources.    ADVANTAGE - The solar cell has less possibility to have convex shape and suppressed deformation generation with temperature increase. The solar cell with improved esthetic appearance, high conversion efficiency, and improved mechanical strength, is provided by the addition of filler in the cured resin layer.    DETAILED DESCRIPTION - A solar cell in a sheet form comprises cured resin layer, substrate containing resin provided on layer (40), photoelectric conversion layer provided on the substrate, and cured resin layer provided on the layer (100). The linear expansion coefficient of the cured resin contained in the layer (40) is not less than the linear expansion coefficient of a cured resin contained in the resin layer (9). The linear expansion coefficient of the resin layer (9) is more than the linear expansion coefficient of the substrate. The difference (C2-C1) of cure rate (C2) on the surface side opposite to the surface of the resin layer and cure rate (C1) on the surface of the resin layer facing the substrate is 2-15%, and C2 is more than C1. The surface on the resin layer side of the solar cell (S1) is warped convexly, and surface on the resin layer side of the solar cell (S2) is warped concavely. An INDEPENDENT CLAIM is included for production of solar cell.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of the solar cell in the direction in which cured resin layer, substrate, photoelectric conversion layer, and another cured resin layer are stacked.    Cured resin layers (9,40)    Substrate (10)    Surface sides of resin layers (40a,40b)    Photoelectric conversion layer (100)    Solar cell (200)    Surfaces on the cured resin layer sides of solar cell (S1,S2)    Thickness of the cured resin layers (T1,T2)