NOVELTY - A dye-sensitized solar cell and photoelectric conversion element combination has a semiconductor-electrode layer, an electrolyte solution layer (2), and a counter electrode layer (3) consisting of semiconductor particles sequentially provided on an electroconductive support. The solution layer contains a mineral salt compound (I), imidazolium salt compound (II) as a solute, and glycol ether compound (III) or 5-membered ring cyclic ester compound (IV) as a solvent, where the electrolyte solution contains polyether copolymer composition comprising ethylene oxide structural unit as a main chain.    USE - Dye-sensitized solar cell and photoelectric conversion element combination.    ADVANTAGE - The combination has high photoelectric conversion efficiency, electric power generation efficiency, environmental cyclicity, viscosity and durability, is eco-friendly and inexpensive, and avoids easy deterioration of a battery.    DETAILED DESCRIPTION - A dye-sensitized solar cell and photoelectric conversion element combination has a semiconductor-electrode layer, an electrolyte solution layer, and a counter electrode layer consisting of semiconductor particles sequentially provided on an electroconductive support. The electrolyte solution layer contains a mineral salt compound of formula (M+X-) (I), imidazolium salt compound of formula (II) as a solute, and glycol ether compound of formula (R31O(CH2CH2O)nR32) (III) or 5-membered ring cyclic ester compound of formula (IV) as a solvent, where the electrolyte solution contains polyether copolymer composition comprising ethylene oxide structural unit as a main chain.    M=alkali metal, alkaline-earth metal or ammonium;    X=Cl, Br or I;    R21-R23=H or 1-8C alkyl;    R31,R32=H or 1-8C alkyl;    n=1-10;and    R41-R43=H or 1-20C alkyl.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a photoelectric conversion element.    Photoelectrode layer (1)    Electrolyte solution layer (2)    Counter electrode layer (3)    Transparent substrate (11)    Transparent electrode layer (12)    Semiconductor particles (13)    Sensitizing dye (14)