| 초록 |
The counter electrode (CE) in the dye-sensitized solar cells (DSSCs) plays a role in regenerating the oxidized sensitizer through the reduction of the redox species after electron injection. Due to the high conductivity and electro-chemical stability, conducting polymers have the potential to replace platinized counter electrodes in DSSCs. Among them, polypyrrole (PPy) is of special interest because of its easy and fast synthesis, high conductivity, electrochemical reversibility and environmental stability. UPNSs were fabricated by soft template polymerization method using Sodium Decylsulfonate(SDSn) hydrate crystal in aqueous medium. The UPNSs were coated onto fluorine-doped tin oxide (FTO) substrate to use as CE in DSSCs. The performance of the PPy-based DSSCs was characterized by cyclic voltammetry, current density-voltage measurements and electrochemical impedance spectroscopy. |
