The present invention relates to a dye-sensitized solar cell and to a method for manufacturing same, and more specifically, to a novel dye-sensitized solar cell for preventing photoelectron recombination due to a triiodide, and to a method for manufacturing same. The dye-sensitized solar cell, according to the present invention, comprises a metal oxide which is produced by co-adsorption of a reactive compound, which can react with iodine, with a dye on a surface of the dye-sensitized solar cell. The dye-sensitized solar cell can achieve high efficiency by preventing the photoelectron recombination due to the triiodide while using a small amount of the dye.