Using of Artemesia Absinthinum, Verbascum Thapsus, Viola Odorata, Matricaria Chamomilla and Corianderum Satirum natural dyes in making dye-sensitized solar cells

Dye-sensitized solar cells have been attracting much attention due to their proper efficiency, ease and low-cost manufacturing. In the dye-sensitized solar cells, photosensitizers play an important role in the light absorption and conversion of solar energy into electrical energy. In this work, we have tried to use natural dyes as sensitizers in the manufacture of color-sensitive solar cells. The natural dyes were extracted from plants such as Artemisia absinthinum, Verbascum thapsus, Heracleum persicum, Viola odorata, Matricaria chamomilla, Juglans regia, Corianderum sativum, Punica granatum, Rubia tinctorum, Rheum rhaponticum, Quercus, Lavandula officinalis. Initially, the working electrodes were fabricated using titanium dioxide nanoparticles according to the electrophoresis method and then the sensitization of the electrodes was done by natural dyes. In the final step, the effect of natural dyes on improving the efficiency of solar cells was investigated. The results showed that Lavandula aficinalis (Lavender) absorbed more visible light due to its hydroxyl and carboxyl groups and had the highest efficiency (0.053%) among the other cells.