Abstract

• The natural dye extracted from rose flowers (red, orange, and yellow color) were studied for dye sensitized solar cells (DSSCs) applications. The natural dye was extracted from rose flowers with various solvents. deionized water, ethanol, and methanol were used as a solvent for extraction. The optical absorption spectra and energy band gap of extracted dye solutions were investigated with a UV-Visible spectrometer. The absorption spectra of the extracted were performed in the spectral range from 210 nm to 800 nm. The effects of solvents have been investigated by analyzing the optical properties of including absorbance spectrum, energy bandgap and transmittance of the cell with the best performance were investigated. For photo energy, results show in wide energy bandgap of from 3.2 eV to 3.8 eV, were used as the deionized water, ethanol and methanol solvent.