NOVELTY - A photoelectric transducer consists of a methine dye (1) supported on a thin film of oxide semiconductor fine particles provided on a substrate.    USE - Photoelectric transducer is used in solar cells (claimed).    ADVANTAGE - The photoelectric transducer has excellent stability and conversion efficiency, and uses an economical organic dye.    DETAILED DESCRIPTION - A photoelectric transducer consists of a methine dye of formula (1) supported on a thin film of oxide semiconductor fine particles provided on a substrate.    m,n=0-5;    R1=optionally substituted aliphatic hydrocarbon residue or optionally substituted aromatic residue;    R1,R3=H, or optionally substituted aliphatic hydrocarbon residue;    X1,Y1=H, optionally substituted aromatic residue, carboxyl, phosphoric acid group, cyano, or sulfonyl benzene;    Z1=oxygen, sulfur, selenium or NR4;    R4,A1-A5=H, optionally substituted aliphatic hydrocarbon residue, or optionally substituted aromatic residue;    rings a,c=optionally substituted aromatic residue, or optionally substituted aliphatic hydrocarbon residue, with substituents being 1-4 substituents chosen from hydroxyl, phosphoric acid group, cyano, nitro, halogen, carboxyl, carbonamide, alkoxycarbonyl, arylcarbonyl, alkoxyl, aryloxy, amide, acetamide, acyl, and optionally substituted amino;and    ring b=optionally substituted aromatic residue, or optionally substituted aliphatic hydrocarbon residue, with substituents being 1-3 substituents chosen from hydroxyl, phosphoric acid group, cyano, nitro, halogen, carboxyl, carbonamide, alkoxycarbonyl, arylcarbonyl, alkoxyl, aryloxy, amide, acetamide, acyl, and optionally substituted amino.    X1 and Y1 may couple together to form an optionally substituted ring. When m is except 0, an optionally substituted ring may be formed by A1, A2 and/or A3. When m is except 0 and n is 0, A1, A2 and/or A3 may form an optionally substituted ring with ring a. When n is except 0, an optionally substituted ring may be formed by A4 and A5. A4 and/or A5 may form an optionally substituted ring with ring a. The substituents of ring a may mutually combine with A1, A2 and/or A3, or may form an optionally substituted ring which may couple with A4 and/or A5.