METAL COMPLEX DYE, PHOTOELECTRIC CONVERSION ELEMENT AND DYE-SENSITIZED SOLAR CELL

A metal complex dye, containing a ligand LL1 having a structure represented by Formula (I): wherein R 1 and R 2 represent a specific substituent; L 1 and L 2 represent a group composed of at least one kind of group selected from the group consisting of an ethenylene group, an ethynylene group and an arylene group, and conjugate with R 1 or R 2 , and the bipyridine; the ethenylene group and the arylene group may be substituted or unsubstituted; R 3 and R 4 represent a substituent; n1 and n2 represent an integer of 0 to 3; A 1 and A 2 represent an acidic group or a salt thereof; and n3 and n4 represent an integer of 0 to 3.