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 %.