NOVELTY - An electrode component has a conductive polymer layer laminated on the electroconductive portion of a substrate. The conductive polymer layer contains polymer obtained by polymerizing monomer chosen from thiophene having substituents at 3-position and 4-position, and anions which are generated from non-sulfonic-acid-based organic compound which acts as dopant for polymer. Anions of non-sulfonic-acid-based organic compound have molecular weight of 200 or more.    USE - Electrode component is used for organic thin-film solar cell and dye-sensitized solar cell (all claimed).    ADVANTAGE - The electrode component has excellent heat resistance, hole transport ability, and catalyst ability.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) manufacture of electrode component. A phase-separation liquid is prepared by adding monomer to water, and ultrasonic wave is irradiated to phase-separation liquid after dispersing monomer as oil drop to obtain an emulsion dispersion liquid. The size of the oil drop of the monomer is decreased, and ultrasonic wave having frequency higher than the frequency of ultrasonic wave used before, is irradiated to obtain transparent dispersion liquid. The non-sulfonic-acid-type organic compound is added to phase-separation liquid, emulsion dispersion liquid or transparent dispersion liquid as supporting electrolyte to obtain transparent polymerization liquid. The monomer is electrolytically polymerized by introducing base to polymerization liquid and conductive polymer layer is formed on electroconductive portion of base to obtain electrode component;    (2) organic thin-film solar cell, which has anode having electroconductive portion on the surface, hole taking-out layer laminated on the electroconductive of the anode, photoelectric converting layer laminated on hole taking-out layer and containing hole transport component and electron transporter, and a cathode laminated on the photoelectric converting layer. The anode and hole taking-out layer contain electrode component; and    (3) dye-sensitized solar cell, which has a cathode having semiconductor layer containing pigment as photosensitizer, an electrolyte containing oxidation components and reduction components laminated on the semiconductor layer, anode having conductive polymer layer laminated on the electrolyte layer. The anode comprises electrode component, and acts as catalyst for converting oxidation component to reduction component.