A Low-Cost Polytetrafluoroethylene-Framed TiO₂ Electrode Decorated with Oleic Acid-Capped CdSe Quantum Dots for Solar Cell

Figure 5

Nyquist plots of EIS spectra measured at various applied voltages under illumination of one sun (AM 1.5, 100 mW cm⁻²) for TiO₂/MPA/CdSe QD (a) and TiO₂/CdSe QD (b) cells. The inset figure in (a) represents the equivalent circuit used for fitting EIS for both cells, while the inset figure in (b) represents the abscissa expanded in the high frequency ranges for TiO₂/CdSe QD cells. The scattered points are experimental data, and the solid lines are the fitting curves.

(a)

(b)