TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The polymer compound further contains a solvent-nonsoluble resin. A portion or entire of the polymer compound is insoluble in an electrolyte liquid. The solvent-soluble resin consists of polyvinylidene fluoride resin and/or vinylidene fluoride copolymer resin.The transparent electroconductive base material consists of flexible polymeric base material. The separator is a polyelectrolyte consisting of non-woven fabric and/or porous membrane, which is insoluble with respect to an electrolyte liquid, or is swollen with respect to the electrolyte liquid. The polyelectrolyte is fluorine resin, polyolefin-type resin, acrylonitrile-type resin, polyethylene oxide-type resin, acrylic-type resin, polysulfone base resin, epoxy resin and/or polyester resin. The fluorine resin consists of polyvinylidene fluoride resin and/or vinylidene fluoride copolymer resin.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Composition: The optical semiconductor particles consist of metallic compound particles and dye. The metallic compound particles contain metal-oxide particles. The metal oxide particles are chosen form zinc oxide and/or titanium oxide.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Dye: The dye contains carboxyl group, sulfone group, hydroxyl group, polar group and/or nitro group in a molecular structure.    TECHNOLOGY FOCUS - ELECTRONICS - Preferred Component: The optoelectric transducer has a separator provided in between the photoelectric conversion electrode and counter electrode. EXAMPLE - Acid red 87 (TM) (dye) (in g) (0.7), ethanol (200) and trimethyl amine (0.1) were mixed. Finex 50 (TM) (zinc oxide particles) (40) was added to the resulting mixture and dyed for 20 minutes. The dyed zinc oxide particles were separated, washed with ethanol and collected. The collected particles were dried at 100 degrees C to obtain optical semiconductor particles. Kyner 301F (TM) (polyvinylidene fluoride resin) (15), N-methyl-2-pyrrolidone (85) and ethylene glycol (7) were stirred at normal temperature and melted, to obtain a polymer compound solution. The obtained optical semiconductor particles and polymer compound solution were mixed in a ratio of 100:5 and dispersed for 30 minutes to obtain an optical semiconductor particles-containing coating material. The obtained coating material was coated on indium tin oxide (ITO) glass substrate and dried at 80 degrees C for 60 minutes, to obtain a photoelectric conversion electrode having a porous optical semiconductor layer. An optoelectric transducer was obtained using the photoelectric conversion electrode. The obtained optoelectric transducer had excellent dimensional stability, flexibility, conversion efficiency and electric power generation capability, and low internal resistance.