Characterization of Eight Natural Dyes as Synthesizer for Dye-Sensitized Solar Cells Technology

In the present work, dye-sensitized solar cells (DSSCs) were fabricated by using natural dye extracted from eight different flowers namely: [(MN1) Turkish Hibiscus sabdariffa, (MN2) Iraqi Hibiscus sabdariffa, (MN3) Rosehips, (MN4) Lavandula, (MN5) Nerium oleander, (MN6) Red Bougainvillea, (MN7) Pomegranate flower, and (MN8) Pink Bougainvillea] extracts as a photosensitizer. The UV-Vis absorption spectra for all eight samples were recorded at room temperature by using a mixture of 0.1 mol.L−1 HCl and ethanol, and also in different solvents. In addition, the effect of the pH value of these dyes on absorbance were investigated. Moreover, the Fourier transform infrared (FT-IR) spectra of all dyes were recorded. The lamp power used to evaluate the DSSCs performance is 1000 W/m2. The power conversion efficiency (η) of extracted dyes was reached as follows: (MN1) =1.589 %, (MN2) =1.229 %, (MN3) =0.602 %, (MN4) = 0.927 %, (MN5) =0.684 %, (MN6) =1.317 %, (MN7) =1.059 %, and (MN8) =1.149 %.