M Karimi - Department of Faculty of Engineering, Islamic Azad University, Arak, Iran

Throughout the world people are increasingly realizing that the era of cheap fossil fuel is ending soon; yet,the need for energy is growing. So, looking for new energy sources that are sustainable and biocompatible to replacefossil fuel is of utmost urgency. Among the possible sources solar energy has a special place because of its low costand lack of pollution. Today, Dye-sensitized Solar Cells have attracted much attention because of their low cost. In thisproject solar cells based on Titania and in sizes of 2.5 × 2.5 Cms were made by using natural dye. XRD machine andSEM microscopy were used to analyze samples. Accordingly, the average particle size was 18 nm and the depositedtitanium dioxide nanoparticles were in anatase phase. The open circuit voltage was 17.23, and the short-circuit currentwas o.67 and efficiency was almost 7 %.

Solar energy, solar cells, Titania, natural dye