| abstract |
(57) [Problem] To provide a photosensitized solar cell having high energy conversion efficiency and which does not decrease even when used in a high-temperature environment. SOLUTION: An n-type semiconductor electrode with a dye adsorbed on the surface (4), and disposed so as to be spaced apart from the n-type semiconductor electrode, A counter substrate (5) having a conductive film (6) on the surface, and an electrolyte composition layer (10) sandwiched between the n-type semiconductor electrode and the conductive film and relaying charge transport therebetween. It is a photosensitized solar cell. The electrolyte composition includes 1-methyl-3-propyl imidazolium iodide, 1-methyl-3-isopropyl imidazolium iodide, 1-methyl-3-butyl imidazolium iodide, 1-methyl-3-isobutyl imidazo It contains at least one imidazolium salt selected from the group consisting of ium iodide and 1-methyl-3-sbutylimidazolium iodide, more than 10% by weight and not more than 50% by weight of water or alcohol, and iodine. It is characterized by the following. |