Fabrication and Characterization of Dye Sensitized Solar Cells (DSSCs) for Energy Harvesting

Abstract

Dye sensitized solar cells (DSSCs) have been intensively investigated. They are regarded as third generation latest photovoltaic technology in solar cells. This technology is found to be highly effective for low cost, more efficiency in low light conditions and its more absorption with different wavelengths across the visible light spectrum. The DSSC is commonly based on the extracted dye from flowers, roots and leaves of natural plants and trees. The natural dyes are collected from plants and trees to be used as natural photosensitizers for DSSCs. The cells are the fabricated using TiO₂ deposited on transparent fluorine doped tin oxide (FTO) conducting glass plate by using doctor blading method. The optical characteristics of the extracted dye solutions have been performed in between visible light range of 400nm to 780nm. Its photoelectrochemical performance for the cells has been studied. The (I-V) characteristic curves of all fabricated cells have been measured and further analysed for its better performance. Further, the impedance spectroscopy of the cells has been investigated for best performance analysis.