| 초록 |
Dye sensitized solar cells (DSSCs) have attracted the incredible attention due to their advantage such as a simple, the cost-effective fabrication process and the environmental friendliness. In general, DSSCs are composed of a TiO2 working electrode, a platinum (Pt) counter electrode, and an iodide/triiodide redox electrolyte. For counter electrode, pure platinum (Pt) is commonly used as catalysts owing to it’s a superior conductivity and a catalytic activity. However, the Pt is very expensive and affected by corrosiveness of I-/I3- redox couple. Therefore, it is essential to find the alternative catalysts for Pt in DSSCs as a counter electrode. In this study, the carbon nanofibers (CNFs) supported iron oxide are synthesized by electrospinning and a hydrothermal method for use the counter electrode, which has not been reported previously. Their structural and morphological properties were investigated by means of scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Electrochemical and photovoltaic properties are measured by using a pontentiostat/galvanostat and solar simulator. We will discuss these result in detail in conference. |
