Photoelectric conversion device
The present invention provides a photoelectric conversion device capable of improving durability without using particular material. The photoelectric conversion device includes a working electrode in which dye is carried by a metal oxide semiconductor layer and a facing electrode having a conductive layer, and a semi-solid electrolyte containing layer supported between the working electrode and the facing electrode. The electrolyte containing layer contains an electrolyte solution in which a solid electrolyte salt is dissolved in an organic solvent, and a particle. Thereby, liquid leakage or the like hardly occurs even under a high-temperature environment in comparison with the case where the electrolyte containing layer does not contain a particle.
1 . A photoelectric conversion device comprising:
an electrode including a carrying layer which carries dye; and
a semi-solid electrolyte containing layer formed on the carrying layer,
wherein the semi-solid electrolyte containing layer contains an electrolyte solution and a particle, the electrolyte solution being formed by dissolving at least a solid electrolyte salt in the organic solvent.
2 . The photoelectric conversion device according to claim 1 , wherein content of the particle in the electrolyte containing layer is 5 weight % or more and 60 weight % or less.
3 . The photoelectric conversion device according to claim 1 , wherein the particle contains carbon particles.
4 . The photoelectric conversion device according to claim 3 , wherein bulk resistance of the carbon particle is 10 Ωcm, i.e., 0.1 Ωm, or less.
5 . The photoelectric conversion device according to claim 3 , wherein carbon black is used as the carbon particle.
6 . The photoelectric conversion device according to claim 1 , wherein content of the solid electrolyte salt in the electrolyte solution is 0.13 mol/dm 3 or more and 0.75 mol/dm 3 or less.
7 . The photoelectric conversion device according to claim 1 , wherein the organic solvent has one or more of a nitrile group, a carbonate ester structure, a cyclic ester structure, a lactam structure, an amide group, an alcohol group, a sulfinyl group, a pyridine ring, and a cyclic ether structure as a functional group.
8 . The photoelectric conversion device according to claim 1 , wherein the organic solvent contains one or more of methoxypropionitrile, propylene carbonate, N-methylpyrrolidone, pentanol, quinoline, N,N-dimethylformamide, γ-butyl lactone, dimethyl sulfoxide, 1,4-dioxane, methoxyacetonitrile, and butylnitrile.
9 . The photoelectric conversion device according to claim 1 , wherein the solid electrolyte salt contains an iodide ion as an anion.
10 . The photoelectric conversion device according to claim 1 , wherein the solid electrolyte salt contains a quaternary ammonium ion as a cation.