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PROBLEM TO BE SOLVED : To provide a sensitizing dye of a new structure that can efficiently take out an electric current, and to provide an excellent photoelectric conversion element that uses the sensitizing dye, and a dye-sensitized solar cell.SOLUTION : The sensitizing dye for photoelectric conversion is shown by Formula (1) (wherein Ar is (un)substituted aryl; R-Rare each hydrogen, halogen, (un)substituted 1-6C alkyl, (un)substituted aryl or (un)substituted amino; Rand Rare each an acid group, (un)substituted 1-6C alkyl or (un)substituted aryl; X is oxygen, sulfur or the like; n is an integer of 0-3; p is an integer of 1-3; q is an integer of 1-3; and r is an integer of 0-2).