Dye-sensitized solar cells using fifteen natural dyes as sensitizers of nanocrystalline TiO/Sub 2

Abstract

In this study, dye-sensitized solar cells were fabricated using TiO2 as a semiconducting layer dyed with natural extracts. Thin layers of nanocrystalline TiO2 were deposited on transparent Fluorine doped tin oxide (FTO) conductive glass using doctor blade method. Fifteen natural dyes were examined as photosensitizers of the TiO2 layer. The absorption spectra of the natural extracts were performed. The JV characteristic curves of all fabricated cells were measured and analyzed. The parameters related to the cell performance were presented. Moreover, the impedance spectroscopy of two cells was investigated.(author)