Solid electrolytic capacitor, fabrication method thereof, and coupling agent utilized in the same

Abstract

A solid electrolytic capacitor, fabrication method, and coupling agent utilized in the same. The capacitor includes a valve metal layer, an oxide dielectric layer on at least a part of the surface of the valve metal layer, a coupling layer having a molecular chain with a first end bonding to the oxide dielectric layer by covalent bonding and second end with a functional group of a monomer of a conducting polymer, and a conducting polymer layer bonding to the monomer by covalent bonding.

1 - 20 . (canceled)  
   
   
       21 . A coupling agent for forming covalent bonding with an oxide and a conducting polymer by self-assembly process, comprising a formula (6) of:  
       R—R 3   (6)  Wherein    R 1  is silyl, phosphono, carboxy, sulfo, boric acid group, or derivatives thereof; and    R 3  is one of the monomers of the polymer.    
   
   
       22 . The coupling agent in  claim 21 , wherein R 3  is aniline, thiophene, pyrrole, or derivatives thereof.  
   
   
       23 . A coupling agent for forming covalent bonding with an oxide and a conducting polymer by self-assembly process, comprising a formula (7) of:  
       R 1 —R 2 —R 3   (7)  Wherein    R 1  is silyl, phosphono, carboxy, sulfo, boric acid group, or derivatives thereof;    R 2  is an alkyl group of C1 to C12; and    R 3  is one of the monomers of the polymer.    
   
   
       24 . The coupling agent in  claim 23 , wherein R 3  is aniline, thiophene, pyrrole, or derivatives thereof.