Abstract

• In this research, the natural dyes, Poinsettia leaves were used as photosensitizer. These dyes were measured with ethanol solvent at different temperatures (25 ̊C,45 ̊C,65 ̊C). The absorbance and energy levels of the dye solution were characterized using UV-Vis Spectroscopy measurement. XRD measurement was used to know the purification and structural properties of TiO2 powder. The sandwich structure of DSSC consisted of TiO2as photo electrode, carbon layer as counter electrode, poinsettia as photosensitizer and electrolyte as electron transfer media. The efficiencies of DSSC were calculated by using I-V measurement.