Patent ID: 6344966
Filing Date: 2002-02-05
Classification: H01G,Y02E

Abstract:
A solid electrolytic capacitor comprising an oxide dielectric film having provided thereon an electrically conducting polymer layer containing a &pgr; electron-conjugated structure, wherein the polymer layer contains as a dopant at least one organic anion selected from (1) an alkoxy-substituted naphthalene monosulfonate anion substituted by at least one linear or branched, saturated or unsaturated alkoxy group having from 1 to 12 carbon atoms, (2) a sulfonate anion of a heterocyclic compound having a 5- or 6-membered heterocyclic ring (hereinafter referred to as a â€œheterocyclic sulfonate anionâ€ ), and (3) an anion of an aliphatic polycyclic compound.