NOVELTY - A photoelectric conversion device comprises: electrode including carrying layer (12) which carries dye (13); and semi-solid electrolyte containing layer (11B) formed on carrying layer, where semi-solid electrolyte containing layer contains electrolyte solution formed by dissolving at least solid electrolyte salt in organic solvent, and particle.    USE - As photoelectric conversion device (claimed), such as photoelectric conversion device for solar cell and similar devices which convert light energy such as sun light into electric energy.    ADVANTAGE - The device provides photoelectric conversion device capable of improving durability without using particular material, as compared to the prior art photoelectric conversion devices. The photoelectric conversion device includes a working electrode in which dye is carried by metal oxide semiconductor layer, a facing electrode having conductive layer, and a semi-solid electrolyte containing layer supported between working electrode and facing electrode. The electrolyte containing layer contains electrolyte solution in which at least solid electrolyte salt is dissolved in organic solvent, and includes particle (preferably 5-60 wt.%) i.e. forms semi-solid electrolyte. Thus, liquid leakage hardly occurs even under high-temperature environment, due to the presence of particle that serves as liquid retaining material; in comparison with case where electrolyte containing layer does not contain particle. The particle contains carbon particles, so that conductivity of electrolyte containing layer improves, and redox reaction is favorably performed in electrolyte containing layer so that the electron more quickly travels and an amount of discharge to amount of light absorbed by dye more increases. In photoelectric conversion device according, content of solid electrolyte salt in electrolyte solution is (0.13-0.75) mol/dm3. Thus, electron more quickly travels in electrolyte containing layer, and amount of discharge to amount of light absorbed by dye more increases.    DETAILED DESCRIPTION - A photoelectric conversion device comprises: electrode including carrying layer (12) which carries dye (13); and semi-solid electrolyte containing layer (11B) formed on carrying layer, where semi-solid electrolyte containing layer contains electrolyte solution formed by dissolving at least solid electrolyte salt in organic solvent, and particle. The content of particle in electrolyte containing layer is (5-60 wt.%). The particle contains carbon particles (preferably carbon black). The bulk resistance of carbon particle is less than or equal to 10 Omega .cm (or less than or equal to 0.1 Omega .m). The content of solid electrolyte salt in electrolyte solution is (0.13-0.75) mol/dm3. The organic solvent has at least one of nitrile group, carbonate ester structure, cyclic ester structure, lactam structure, amide group, alcohol group, sulfinyl group, pyridine ring, and/or cyclic ether structure as functional group.    DESCRIPTION OF DRAWING(S) - The figure shows enlarged cross-sectional view illustrating main part of photoelectric conversion device.    Conductive layer/semi-solid electrolyte containing layer (11B)    Metal oxide semiconductor layer having porous structure/carrying layer (12)    Dense layer of semiconductor layer (12A)    Porous layer of semiconductor layer (12B)    Dye (13)