Selective conditions for the fabrication of a flexible dye-sensitized solar cell with Ti/TiO_2 photoanode

摘要

The effects of four factors, i.e., (ⅰ) sputter-deposition time of platinum (Pt) film, (ⅱ) sintering temperature of TiO_2-coated Ti foil (Ti/TiO_2), (ⅲ) thickness of Ti foil, and (ⅳ) concentration of iodine are reported for the photovoltaic performance of a back-illuminated flexible dye-sensitized solar cell (DSSC) with Ti foil substrate for the TiO_2 layer. Optimization of these four factors yields a solar-to-electricity conversion efficiency (η) of 5.95%. Transmittance spectra, cyclic voltammetry (CV), electrochemical impedance spectra (EIS), X-ray diffraction (XRD), scanning electron micrographs (SEM), and laser-induced photovoltage transient technique are used to substantiate the explanations.