TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Oxides: The thin film of oxide semiconductor fine particles contains titanium dioxide, zinc oxide, or stannic oxide. The thin film supports methine dye in the presence of an inclusion compound.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Dyes: Preferably, the methine dye is of formula (2). The photoelectric transducer further supports an organic dye other than the methine dye, and a metal complex, on the thin film of oxide semiconductor fine particles.R5=H, optionally substituted aromatic residue, optionally substituted aliphatic hydrocarbon residue, hydroxyl, phosphoric acid group, cyano, nitro, halogen, carboxyl, carbonamide, alkoxycarbonyl, arylcarbonyl, alkoxyl, aryloxy, amide, acetamide, acyl, or optionally substituted amino, preferably optionally substituted aliphatic hydrocarbon residue;andring d=optionally substituted aromatic residue or optionally substituted aliphatic hydrocarbon residue, with substituent 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. Preferred Definitions:    Z1=oxygen, sulfur or selenium, preferably sulfur;    n=1-4, preferably 1;    m=0-2, preferably 0;    R2,R3=optionally substituted aliphatic hydrocarbon residue, preferably unsubstituted linear 1-18C saturated alkyl, more preferably methyl;    X1,Y1=carboxyl, phosphoric acid group, or cyano, preferably one is carboxyl and the other is cyano;    R1=methylbenzene;and    A1-A5=H.    The ring system formed by bonding of X1 and Y1 is chosen from groups of formulae (1a-44a), preferably of formula (7a), and has carboxyl group as substituent. Rings a-c are unsubstituted.    asterisk=carbon atom to which X1 and Y1 couple.    SPECIFIC COMPOUNDS - 451 Specific methine dyes are disclosed. E.g. (2E)-2-cyano-3-(4-((9,9-dimethyl-9H-fluoren-2-yl)methylamino)phenyl)acrylic acid of formula (A), (2E)-2-cyano-3-(4-((9,9-dimethyl-9H-fluoren-2-yl)ethylamino)phenyl)acrylic acid, (2E)-2-cyano-3-(4-((9,9-dimethyl-9H-fluoren-2-yl)n-butylamino)phenyl)acrylic acid, (2E)-2-cyano-3-(4-((9,9-di-n-butyl-9H-fluoren-2-yl)n-octylamino)phenyl)acrylic acid, and (2E)-2-cyano-3-(4-((9,9-dimethyl-9H-fluoren-2-yl)methylamino)phenyl)acrylic acid.    EXAMPLE - 5-(4-((9H-fluoren-2-yl)-p-tolyl-amino)-phenyl)-thiophene-2-carbaldehyde (in mass parts) (0.3) was dissolved in methylcyanoacetate (0.12) and ethanol (20), anhydrous piperidine (0.01) was added, and the reaction mixture was heat-refluxed for 2 hours and stirred at 25 degrees C for 1 hour. The obtained reaction liquid was poured into sodium hydroxide ethanol solution (100), and heat-refluxed for 1 hour. The reaction liquid was poured into water (200), and pH was set to 6 using 10% hydrochloric acid aqueous solution. The precipitated crystal was filtered, washed with water (10), dried at 70 degrees C, purified using chloroform-ethanol, and recrystallized using ethanol to obtain 5-(4-((9H-fluoren-2-yl)-p-tolyl-amino)-phenyl)-(2E)-2-cyano-3-thien-2-ylacrylic acid (0.3) as yellow crystal. The compound provided photoelectric transducer having excellent stability and conversion efficiency.