PURPOSE: To obtain a thin film solid cell easy and convenient for maintenance, by utilizing the difference of charge carrier holding ability caused by lamination of conductive films.
CONSTITUTION: Electrode 1 and 5 interpose an organic conductive film between themselves, which is made of a laminate forming the density gradient of charge carrier by lamination of multiple organic conductive films 2 and 3 having different charge carrier density. Furthermore, a heterocyclic macromolecular organic conductive film is laminated on said organic conductive film by electrolytic oxidation and the charge carrier density gradient is formed by impressing backward voltage and thus, a cell is formed. Or, a polymer coating film is formed on said organic conductive film and furthermore, a heterocyclic macromolecular organic conductive film is laminated on this polymer coating film by electrolytic oxidation and the charge carrier density gradient is formed by impressing backward voltage and thus, a cell is formed. As said organic conductive film material, for example, pyrrole system polymer such as polypyrrole, n-methylpolypyrrole, etc., thiophene system polymer such as polythiophene or the like, and furan system polymer such as polyfuran or the like, and so on are used.
EBISAWA FUMIHIRO
KURIHARA TAKASHI
