| 摘要 |
<p>The present invention provides a photoelectric conversion element for use, for example, as a dye sensitized solar cell that has a wide range of choices of additives and moreover offers better characteristics than when 4-tert-butylpyridine is used as an additive.
In the photoelectric conversion element having a structure in which an electrolyte layer (7) is filled between a porous photoelectrode (3) formed above a transparent substrate (1) and a counter electrode (6), an additive having a pK a falling within the range of 6.04 ‰¤ pK a ‰¤ 7.3 is added to the electrolyte layer (7), and/or the additive having a pK a falling within the range of 6.04 ‰¤ pK a ‰¤ 7.3 is adsorbed to the surface of at least either the porous photoelectrode (3) or counter electrode (6) facing the electrolyte layer (7). A pyridine-based additive or an additive having a heterocycle is used as an additive. When the electrolyte layer (7) includes an electrolytic solution, a solvent having a molecular weight of 47.36 or more is used as the solvent of the electrolytic solution. In the dye sensitized photoelectric conversion element, a photosensitizing dye is bound to the surface of the porous photoelectrode (3).</p> |
