Abstract:
Dye-Sensitized Solar Cells (DSSCs) have been investigated using various methods including: varied illumination density, cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and equivalent circuit models. Under various illumination conditions, DSSCs were affected by many factors: exposure time, surrounding temperature, light intensity and UV (ultraviolet) radiation. In order to understand and identify aging phenomena, as well as ionic and electronic processes, a number of physical and electrochemical experiments were performed. The internal resistances among the components of DSSCs showed distinct features under different experimental conditions. For long-term stability and high performance of DSSCs, it is necessary to investigate the characteristics of these internal resistances and develop methods to reduce them. By using electrochemical impedance spectroscopy (EIS) and equivalent circuit models, it was possible to demonstrate the electrochemical phenomena and degradation characteristics of DSSCs.
