TiO₂ Nanotube Arrays Composite Film as Photoanode for High-Efficiency Dye-Sensitized Solar Cell

Table 2

Parameters obtained by fitting the impedance spectra of DSSCs using the equivalent circuit in Figure 6.

Sample	𝑅𝑠 (Ω)	𝑅ct (Ω)	𝑅𝑤 (Ω)	𝜏 (ms)
P25 particle	17.84	15.84	59.86	42.2
TNT-arrays	18.33	10.21	43.38	60.1
Double-layer	12.33	12.38	46.42	59.5