TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compounds: The thiophene compound is 3,4-ethylene dioxy thiophene. The aromatic amine compound is aniline.    TECHNOLOGY FOCUS - POLYMERS - Preferred Structure: The electroconductive fiber or particles have 3D-network structure. Preferred Property: The catalyst substance is supported by electroconductive fiber or particles surface that are mutually contacting or fastening, and conducting electrically. Preferred Components: The catalyst substance contains noble metals preferably platinum, or noble metal alloy. The conductive polymer contains an iodide anion and/or poly iodide anion as dopant or oxidation-reduction pair. Preferred Form: An electrolyte is in gel form, paste form, clay shape or solid state. Preferred Process: The electroconductive fiber is formed from electroconductive material chosen from carbon, carbon paper, metal oxide and metal. The conductive polymer is formed by polymerizing aromatic amine compound of formula (1) or (2), thiophene compound of formula (3) and/or pyrrole compound of formula (4).R1,R6=H, methyl or ethyl group;andR2-R5,R7-R14=H, 1-8C alkyl or alkoxy, 6-12C aryl or aralkyl, cyano, thiocyano, halogen, nitro, amino, amide, hydroxyl, thiol, carboxyl, sulfo or phosphonium group, R2, R3, R4 and R5, R11 and R12, R13 and R14, and R8, R9 and R10 form ring. EXAMPLE - Titanium dioxide paste was coated on the surface of stannic oxide film at 450degreesC for 30 minutes to obtain semiconductor electrode having thickness of 10 microns. The obtained semiconductor electrode was immersed into ethanol solution with bis(4,4'-dicarboxy 2,2'-bipyridine) diisothiocyanate ruthenium complex at 140degreesC, air dried and washed with ethanol to form semiconductor layer. The obtained semiconductor layer was immersed in aqueous solution containing aniline (0.1 mol/L) and hydrochloric acid (1 mol/L) to form poly aniline film. The obtained film was oxidized electrochemically using carbon paper at 100degreesC and immersed in the electrolyte containing 1-ethyl 3-methyl imidazolium bis(trifluoro methane sulfonyl) imide to obtain electrolyte-catalyst composite electrode. The obtained electrode produced photovoltaic cell having circuit voltage of 0.67 V, short circuit current density of 14.6 mA/cm2, form factor of 0.64 and photoelectric conversion efficiency of 6.2%.