Study of photoconductivity of nanocrystalline titanium dioxide used in dye sensitized solar cell

In this work the nanocrystalline TiO₂-dye sensitized photovoltaic cells are constructed and studied. This type of photovoltaic cell consists of a thin film of nanocrystalline titanium dioxide (TiO₂) particles with natural black berries juice as dye molecules on their surface. When the dye molecules are excited by a light source, electrons are transferred from the dye to the TiO₂ and produce a photovoltaic effect. The circuit of the photovoltaic cell is completed by applying an electrolyte solution. The efficiency of such a photovoltaic cell depends on the state of the TiO₂, the type of dye, and the electrolyte solution used. The purpose of this study is to develop solar cells with increasingly higher voltage and current outputs and to have our results as predictable and reproducible as possible. Research is still in the stages of testing various dyes, and electrolyte solution in order to obtain better results and more efficient solar cells.