| abstract |
(57) [Abstract] [Problem] To provide a highly-concentrated conductive polymer solution in a doped state and a conductive polymer coating film having a high conductivity obtained by using the solution, and also to use the conductive polymer. The purpose is to influence a solid electrolytic capacitor having excellent high frequency characteristics and reliability. [Constitution] A conductive polymer coating film can be obtained by using a conductive polymer compound having an adamantane skeleton, such as a sulfonic acid, carboxylic acid, or phosphoric acid as a dopant, and a conductive polymer compound composed of a polar solvent. . In addition, the solid electrolytic capacitor, the oxide film surface of the film-forming metal, The conductive polymer is formed as a solid electrolyte. |