NOVELTY - Photovoltaic cell (100) comprises electromagnetic energy absorbing material (110) disposed on a first electrode (120) and generates an exciton upon absorption of electromagnetic energy; a reaction center (130) electrically coupled to the first electrode and separated from the absorbing material, where the reaction center receives the generated exciton from the material; and a second electrode (140) electrically coupled to reaction center and to first electrode.    USE - For generating a current in a solar panel and in power system (claimed), for converting sunlight into electricity, and for converting energy from a photon into electrical energy.    ADVANTAGE - The optical properties and electrical properties of the photovoltaic cell are individually optimized or tuned. The photovoltaic cell is more efficient and cheaper to produce than a conventional photovoltaic cell. The optical function of the cell can be separated from the electrical function of the device such that they are independent. The materials and thicknesses of the materials for each component can be individually selected to provide improved optical and electrical properties. The thickness of the absorbing material can be increased to promote increased absorption of incident electromagnetic energy without compromising the electrical performance of the reaction center. The materials and thickness of the reaction center is selected to increase the efficiency at which excitons are transferred from the material without affecting the absorption performance of the material. An increase in photovoltaic cell power conversion efficiency coupled with low production costs allow the possibility of cheap and intensive harvesting of solar power for powering a variety of personal and public electrical and electronic equipment that could free society from dependence on uncertainties of exhaustible domestic and foreign energy sources such as oil.    DETAILED DESCRIPTION - A photovoltaic cell (100) comprises electromagnetic energy absorbing material (110) disposed on a first electrode (120) and generates an exciton upon absorption of electromagnetic energy; a reaction center (130) electrically coupled to the first electrode and separated from the material, where the reaction center receives the generated exciton from the material; and a second electrode (140) electrically coupled to reaction center and to first electrode. The photovoltaic cell comprises a circuit (150) constructed and arranged to receive current generated from the photovoltaic cell and an optical element configured to direct electromagnetic energy to the electromagnetic energy absorbing material. INDEPENDENT CLAIMS are included for the following:    (1) a power system comprising the photovoltaic cell and a circuit electrically coupled to the photovoltaic cell; and    (2) generating a current with a photovoltaic cell involving transferring an exciton produced from absorption of electromagnetic energy to a reaction center and generating a current in the reaction center by separating positive and negative charge constituents of the transferred exciton.    DESCRIPTION OF DRAWING(S) - The figure shows the photovoltaic cell for generating a current.    photovoltaic cell (100)    electromagnetic energy absorbing material (110)    first electrode (120)    reaction center (130)    second electrode (140)    external circuit (150)    load. (160)