NOVELTY - A solar cell, at least comprises: a first electrode (102) containing an outermost surface (102a) and an inner surface (102b); a second electrode (106) containing an outermost surface and an inner surface; a photoelectric conversion layer (108), disposed between the inner surface of the first electrode and the inner surface of the second electrode; and an ionizable charged film (104), disposed on one of the outermost surface of the first electrode and the outermost surface of the second electrode.    USE - AS solar cell comprising crystalline silicon solar cell, amorphous silicon thin film solar cell, amorphous and microcrystalline silicon thin film solar cell, copper indium gallium selenide (CIGS) or cadmium telluride (CdTe) solar cell (claimed).    ADVANTAGE - In the passivation structure, a charged material is directly deposited on the electrode of the solar cell through coating process. The accumulated charges within the ionizable charged film cause energy band bending, so as to effectively create field-effect surface passivation on the solar cell. As compared to the known vacuum semiconductor process, the method is cheaper and easier for production of solar cell without causing serious environmental problems. The solar cell with ionizable charged film has increased lifetime, compared to that without the coating layer.    DETAILED DESCRIPTION - A solar cell, at least comprises: a first electrode (102) containing an outermost surface (102a) and an inner surface (102b); a second electrode (106) containing an outermost surface and an inner surface; a photoelectric conversion layer (108), disposed between the inner surface of the first electrode and the inner surface of the second electrode; and an ionizable charged film (104), disposed on one of the outermost surface of the first electrode and the outermost surface of the second electrode. The second electrode comprises transparent conductive oxide or metal grid electrode. The first electrode comprises transparent conductive oxide, metal layer, or laminate layer having transparent conductive layer and metal layer. The ionizable charged film comprises inorganic charged thin film or organic charged thin film. An INDEPENDENT CLAIM is included for a solar cell module, at least comprising: the several solar cells; and an encapsulant adhering on the ionizable charged film. The organic charged thin film comprises negatively charged polymer thin film or positively charged polymer thin film.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic diagram of the solar cell.    First electrode (102)    Outermost surface of first electrode (102a)    Inner surface of first electrode (102b)    Ionizable charged film (104)    Second electrode (106)    photoelectric conversion layer (108)