Figure 4: EIS results of I3−/I− and [Co(bpy-pz)2]3+/2+ system-based DSCs.
From: A cobalt complex redox shuttle for dye-sensitized solar cells with high open-circuit potentials
Transport resistance (Rtrans) (dashed lines), recombination resistance (Rrec) (solid lines), and chemical capacitance (dotted lines) of the [Co(bpy-pz)2]3+/2+ (red lines and markers) and I3−/I− (black lines and markers) system-based DSCs (a) in the dark and (b) at 1 sun by light-emitting diode. (c) Charge collection efficiency of I3−/I− (black solid line with open squares) and [Co(bpy-pz)2]3+/2+ (red dashed line with closed circles)-based DSCs as function of applied potential. Inset shows the electron lifetime and the transport time for [Co(bpy-pz)2]3+/2+ and the I3−/I− plotted against DOS.
