TECHNOLOGY FOCUS - ELECTRONICS - Preferred Method: The solution (S) is applied or impregnated on surface of electroconductive film of electroconductive substrate, and dried at 50-300degreesC for 10-1800 seconds. Alternately, the solution (S) is applied, dried at 200-300degreesC, and baked for 0.5-3 hours. Preferred Electrode: The counter electrode is reinforced with the substrate of semiconductor electrode.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Solution: The solution (S) is alternately obtained by dissolving organic compound (C) (in wt.pts) (0.5-3) in titanium oxide-type liquid mixture obtained by mixing peroxo titanic acid modified anatase-type titanium oxide aqueous sol (90-10) having concentration of 0.1-2 wt.%, and peroxo titanic acid aqueous solution (10-90) having concentration of 2-10 wt.%. Preferred Compounds: The organic compound (C) is polyethylene oxide polymer modified polydimethyl siloxane or polyethylene oxide-polypropylene oxide-block copolymer modified polydimethyl siloxane. The electrolyte having oxidation-reduction pair is transparent. Preferred Method: A solvent (0-300) chosen from water, organic solvent and mixed solvent is further mixed with aqueous solution (S) (100). Preferred Solvents: The organic solvent is alcohol. The mixed solvent contains water (5-30), butyl cellosolve (0-20), water-soluble monovalent alcohol (30-95) having boiling point of 120degreesC or less, and water-soluble dihydric alcohol (0-20) having boiling point of 250degreesC or less. Preferred Properties: The solution (S) has viscosity of 10-1000 mPa.second at 25degreesC and thixotropy degree of 1-8. The semiconductor film of electrode has thickness of 0.2-20 microns.    TECHNOLOGY FOCUS - POLYMERS - Preferred Solution: The solution (S) further contains water-soluble polymer (0.001-10 wt.%), a dye as photosensitizer and cellulose derivative. One portion or whole portion of hydrogen atom of the cellulose derivative is substituted with methyl group, hydroxy ethyl group and/or hydroxy propyl group. Preferred Substrate: The substrate of semiconductor electrode is plastic, rubber board or film. The electroconductive substrate has an electroconductive film (2) on a transparent substrate (1). EXAMPLE - Aqueous ammonia was added to titanium tetrachloride aqueous solution, and reacted for 4 hours. The mixture was decanted, and precipitated hydroxy-containing titanium was separated. Hydrogen peroxide solution (100 ml) was added after maintaining at 15degreesC, and reacted for 3 hours. A peroxotitanic acid aqueous solution (Y) was obtained. Pure water was added to obtained solution (Y) at room temperature, and peroxo titanic acid aqueous solution (Z) was produced. The obtained solution (Z) (100 wt.pts) and FZ-2161 (polyether modified polydimethyl siloxane) (2 wt.pts) were mixed to obtain a mixing aqueous solution. The solution had viscosity of 82 mPa.second and thixotropy degree of 2.2. The solution was applied on surface of electroconductive substrate, and dried at 80degreesC for 5 minutes to produce semiconductor electrode. An optoelectric transducer was produced using the formed electrode, and had favorable photoelectric conversion efficiency.