High Efficiency Dye Sensitized Solar Cell from Tectona Grandis and red Crysanthemum Morifolium as a Sensitizer

Abstract

Tectona Grandis leaves and red Crysanthemum Morifolium have been used as sensitizers for dye sensitized solar cell (DSSC) using organic solvents by ethanol, citric acid, and distilled water in respectively with the ratio of 5 : 1 : 4. TiO2 paste was spin-coated on top Indium Tin Oxide (ITO) conductive glass and calcinated at temperature of 450°C for 10 min. The chemical properties were analysis by using Fourier transform infrared spectroscopy (FTIR) indicated the presence of anthocyanin from Tectona Grandis leaves and red Crysanthemum Morifolium petal. The physical properties were analysis by using UV-Vis spectrophotometer was performed to measure the absorbance of dye solution in the visible spectrum range and X-Ray Diffractometer (XRD) was used to determine the structure of TiO2/ITO and Dye/TiO2/ITO. Among the three dyes studied, the mixed dye solution from Tectona Grandis leaves and red Crysanthemum Morifolium was shows the best photosensitization effects with the conversion efficiency is 0.834 %.