N-DOPED AND P-DOPED POLYDITHIENO[3,4-B-3',4'-D] THIOPHENE - A NARROW-BAND GAP POLYMER FOR REDOX SUPERCAPACITORS

We studied polydithieno[3,4-b: 3',4'-d]thiophene (pDTT), an electronic ally conducting polymer with a narrow band gap, and our data clearly d emonstrated that the charge injection of both signs is possible in ele ctrolytic media with tetraalkylammonium salts. This is an important fe ature for the development of polymer-based redox supercapacitors with high charge storage capacity and high operating potential. Electrochem ical characterization data of p- and n-doped pDTT films electrosynthes ized in different conditions and on several electrode materials are re ported. Successful results were achieved on carbon paper electrodes wh ere the same p- and n-doping levels were reached.