Flexible double-sided composite folding solar cell and preparation method thereof

The invention provides a flexible double-sided composite folding solar cell, and belongs to the technical field of solar energy and energy. The solar cell is a laminated composite cell which is prepared from a perovskite active cell layer and a copper-indium-gallium-selenium active cell layer and can receive light from two sides. The solar cell sequentially comprises a high-wear-resistance light-transmitting layer I, a charge transmission layer, a perovskite active cell layer, a hole transmission layer I, a metal electrode layer, a hole transmission layer II, a copper indium gallium selenide active cell layer and a high-wear-resistance light-transmitting layer II from a light receiving surface to a backlight surface. The invention also provides a preparation method of the flexible double-sided composite folding solar cell. According to the invention, the perovskite active cell layer and the copper indium gallium selenide active cell layer are laminated and connected in parallel to formthe efficient flexible c