Figure 3
From: Carbon nanotube counter electrode for high-efficient fibrous dye-sensitized solar cells
EIS results. (a) and (b) are the Nyquist plots of EIS of symmetrical dummy cells fabricated with different fibrous electrodes; (b) is the amplificatory figure of (a); the inset of (b) shows the detail of overlapped part in high frequency region of Nyquist plots; (c) shows the Bode-phase plots. (d) is the equivalent circuits of symmetrical dummy cells except for BCNT-BCNT type and (e) is the equivalent circuit of the BCNT-BCNT dummy cell, where Rs is the serial resistance, Rct is the electron transfer resistance at the interface of electrode/electrolyte, Cdl is the double layer capacitance of the electrode/electrolyte interface, ZN is the Nernst diffusion impedance of electrolyte, RCNT is the electron transfer resistance in solid CNT net and Csl is the capacitance of CNT net itself. Dots are the experimental data and solid lines are the fitted results.