A dye-sensitized solar cell (DSC) is provided with energy-donor enhancement. A transparent conductive oxide (TCO) film is formed overlying a transparent substrate, and an n-type semiconductor layer is formed overlying the TCO. The n-type semiconductor layer is exposed to a dissolved dye (D1) having optical absorbance local maximums at a first wavelength (A1) and second wavelength (A2), longer than the first wavelength. The n-type semiconductor layer is functionalized with the dye (D1), forming a sensitized n-type semiconductor layer. A redox electrolyte is added that includes a dissolved energy-donor material (ED1) in contact with the sensitized n-type semiconductor layer. The energy-donor material (ED1) is capable of non-radiative energy transfer to the dye (D1), which is capable of charge transfer to the n-type semiconductor. In one aspect, the dye (D1) is a metalloporphyrin, such as zinc porphyrin (ZnP), and the energy-donor material (ED1) includes a perylene-monoimide material or chemically modified perylene-monoimide material.
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