A photoelectric conversion element, containing: an electrically conductive support; a photoconductor layer containing an electrolyte; a charge-transfer layer containing an electrolyte; and a counter electrode; wherein the photoconductor layer contains semiconductor fine-particles carrying a metal complex dye represented by Formula: M mX · mY Formula wherein M represents Fe 2+, Ru 2+ or Os 2+; LD represents a ligand represented by Formula; LA represents a bidentate or tridentate ligand having a nitrogen-containing aromatic heterocyclic skeleton and at least one acidic group; X represents a monodentate or bidentate ligand; mX represents an integer of 0 to 3; CI represents a counter ion necessary for neutralizing an electric charge; and mY represents an integer of 0 to 2; wherein Z represents a group of nonmetallic atoms necessary for forming a ring, and it may contain, as a ring-forming atom, a coordinating atom which coordinates to the aforementioned M; D represents a coordinating atom selected from an oxygen atom and a nitrogen atom and coordinates to the aforementioned M; E represents a single bond, -O-, -N(R 1)-, -C(R 2) 2 -, -C(=R 3)-, -C(=O)-, -C(=NR 1)-, or -C(R 2) 2 -C(=Q)-, in which R 1 and R 2 each independently represent a hydrogen atom, an alkyl group, an aryl group, a heteroaryl group, an alkoxy group, or an aryloxy group; R 3 represents an alkylidene group, an alkenylidene group, or a cycloalkylidene group; two R 2 s may be the same or different from one another; R represents a substituent; m and n each independently represent an integer of 1 or more; wherein at least one coordinating atom is a coordinating atom A and, among Rs in the number of n, at least one is a substituent W, and D never forms a ring with E or Z; herein, the coordinating atom A is an oxygen or nitrogen atom which does not have an unsaturated bonding arm, and the substituent W is an ethenyl group, an ethynyl group, an aryl group, or a heteroaryl group, each of which is substituted with a monovalent alkyl group having 6 to 18 carbon atoms or with a substituent having the alkyl group. an electrically conductive support; a photoconductor layer containing an electrolyte; a charge-transfer layer containing an electrolyte; and a counter electrode; wherein the photoconductor layer contains semiconductor fine-particles carrying a metal complex dye represented by Formula: M mX · mY Formula wherein M represents Fe 2+, Ru 2+ or Os 2+; LD represents a ligand represented by Formula; LA represents a bidentate or tridentate ligand having a nitrogen-containing aromatic heterocyclic skeleton and at least one acidic group; X represents a monodentate or bidentate ligand; mX represents an integer of 0 to 3; CI represents a counter ion necessary for neutralizing an electric charge; and mY represents an integer of 0 to 2; wherein M represents Fe 2+, Ru 2+ or Os 2+; LD represents a ligand represented by Formula; LA represents a bidentate or tridentate ligand having a nitrogen-containing aromatic heterocyclic skeleton and at least one acidic group; X represents a monodentate or bidentate ligand; mX represents an integer of 0 to 3; CI represents a counter ion necessary for neutralizing an electric charge; and mY represents an integer of 0 to 2; wherein Z represents a group of nonmetallic atoms necessary for forming a ring, and it may contain, as a ring-forming atom, a coordinating atom which coordinates to the aforementioned M; D represents a coordinating atom selected from an oxygen atom and a nitrogen atom and coordinates to the aforementioned M; E represents a single bond, -O-, -N(R 1)-, -C(R 2) 2 -, -C(=R 3)-, -C(=O)-, -C(=NR 1)-, or -C(R 2) 2 -C(=Q)-, in which R 1 and R 2 each independently represent a hydrogen atom, an alkyl group, an aryl group, a heteroaryl group, an alkoxy group, or an aryloxy group; R 3 represents an alkylidene group, an alkenylidene group, or a cycloalkylidene group; two R 2 s may be the same or different from one another; R represents a substituent; m and n each independently represent an integer of 1 or more; wherein at least one coordinating atom is a coordinating atom A and, among Rs in the number of n, at least one is a substituent W, and D never forms a ring with E or Z; herein, the coordinating atom A is an oxygen or nitrogen atom which does not have an unsaturated bonding arm, and the substituent W is an ethenyl group, an ethynyl group, an aryl group, or a heteroaryl group, each of which is substituted with a monovalent alkyl group having 6 to 18 carbon atoms or with a substituent having the alkyl group.