Flexible dye-sensitised solar cells (FDSSCs) which have different quantities of arrayed titanium dioxide (TiO 2 ) working electrode for parallel modules are introduced. FDSSCs are usually fabricated as a module type instead of single cell to enhance conversion efficiency and characteristic parameters. The general FDSSCs modules are designed as parallel strip-shaped and as parallel interconnection types, and there are some advantages such as easy fabrication, low cost and simple structure. In this reported study, the active areas of FDSSCs are the same (0.48 cm 2 ), and they have different quantities of TiO 2 thin films. The single strip-shaped TiO 2 working electrode has a larger internal resistance than more quantities of TiO 2 thin films. Therefore, and they have fabricating the different quantities of arrayed flexible TiO 2 working electrodes is the better method to solve the problem, higher internal resistance than single TiO 2 thin film. As a result, the FDSSC, which has the triple stripshaped TiO 2 working electrode, has a higher conversion efficiency (0.25%) than other different quantities of TiO 2 thin films.

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Titanium dioxide (TiO2) film was deposited on fluorine-doped tin oxide (FTO) glass substrate by electrophoretic deposition method (EPD). TiO2films were prepared with different I2dosages, electric field intensities and deposition time (D.T.), electrophotic deposition times. By different I2dosages, electric field intensities, deposition time, electrophotic deposition times fabricated TiO2films and compared photoelectric characteristics of TiO2films to find optimal parameters which were the highest photovoltaic conversion efficiency. And use electrochemical impedance spectroscopy (EIS) to measure the Nyquist plots under different conditions and analyze the impendence of dye-sensitized solar cells at the internal heterojunction. According to the experimental results, the I2dosage was 0.025 g which obtained the optimal characteristic parameters. Thickness of TiO2film was 10.6 μm, the open-circuit voltage (Voc) was 0.77 V, the short-circuit current density (Jsc) was 7.20 mA/cm2, the fill factor (F.F.) was 53.41%, and photovoltaic conversion efficiency (η) was 2.96%.

In this study, the different TiO 2 layer thicknesses and electrolyte thicknesses were investigated, which were applied in the dye-sensitized solar cells (DSSC). The amount of dye adsorption was decided by thickness of TiO 2 layer, the appropriated TiO 2 thickness could increase the short-circuit current density of DSSC and decreased the resistance of TiO 2 layer, effectively. The oxidationreduction reaction of inner electrochemical of DSSC was decided by thickness of electrolyte. The appropriate electrolyte thickness could increase the redox rate of DSSC and decreased the distance of electron transmission, effectively.