Equivalent circuit and Nyquist plots. (a) Equivalent circuit for the simulation of DSSC impedance spectra. (b) Nyquist plots of fabricated DSSCs determined under an AM 1.5 G solar illumination of 100 mW cm-2. MWNT loading was 0.01 wt%, and the film thickness was 8 μm.
Chang et al. Nanoscale Research Letters 2012 7:166 doi:10.1186/1556-276X-7-166