Festelektrolytkondensator und dessen Herstellungsverfahren

In a solid electrolyte capacitor comprising a solid electrolyte layer formed of a polymeric product layer of a polymerizable monomer, the polymeric product is doped with organic sulfonic acid selected from the group consisting of aromatic polysulfonic acid, organic sulfonic acid having hydroxy group, organic sulfonic acid having carboxyl group, alicyclic sulfonic acid and benzoquinone sulfonic acid. In a method for manufacturing a solid electrolyte capacitor, including the step of forming a polymeric product layer as a solid electrolyte layer by chemically oxidative-polymerizing a polymerizable monomer, the chemical oxidative polymerization is carried out by using, as an oxidizing agent, a material selected from the group consisting of copper (II) compound, silver compound, mixture of copper (II) compound and silver compound, and mixture of iron compound and hydrogen peroxide water.