NOVELTY - A dye (Ia, Ib or Ic) (21) having structure containing dye residue, is new.    USE - New dye for use in photoelectric transducer used in photoelectrochemical cell (both claimed). Can also be used in photosensor, copies and photovoltaic apparatus.    ADVANTAGE - The dye provides photoelectrochemical cell with high conversion efficiency and excellent durability. The dye is manufactured with high yield suppressing the generation of byproduct. Since ruthenium is not required for the dye, the photoelectric transducer and photoelectrochemical cell are manufactured economically.    DETAILED DESCRIPTION - A dye of formula (Ia, Ib or Ic) having structure containing dye residue, is new.    A=atomic group required to form ring with carbon-nitrogen bond;    Y1,Y2=either acidic group or electron attractive group;    D',Y'=dye residue;    n=1 or more;    L=single bond or bivalent coupling group;    Y3=acidic group;    X=nonmetallic atom group required in order to form 7-membered nitrogen-containing heterocyclic ring with benzene ring;    Z=substituent;    m=0 or more;    R1=H, aliphatic group or aromatic group;    A1=6- or 7-membered nitrogen-containing heterocyclic group formed with benzene ring;    L1=electron transport property coupling group containing thiophene ring, furan ring, pyrrole ring or selenophene ring;    R1c-R3c=H or substituent;    B1c=methylene group substituted by heterocyclic acidic nucleus or electron withdrawing group (optionally containing at least one acidic group);and    n1=1-12.    INDEPENDENT CLAIMS are included for the following:    (1) manufacture of the dye;    (2) photoelectric transducer (10), which consists of light reception electrode containing semiconductor fine particles sensitized with the dye; and    (3) photoelectrochemical cell, which is provided with the photoelectric transducer.    DESCRIPTION OF DRAWING(S) - The drawing shows the sectional view of the photoelectric transducer.    Electroconductive support (1)    Counter electrode (4)    Light reception electrode (5)    Photoelectric transducer (10)    Dye (21)