Figure 3. Photovoltaic performance of p-type DSSC based on CuCrO₂ film.

(a) Photocurrent density-voltage (J–V) and dark current characteristics of p-DSSCs using CuCrO₂ (black curve, device A or CuCrO₂@Au (red curve, device B) as the photocathode (1.8 μm film). The electrolyte composition of electrolyte in devices was 0.3 M T₂ and 0.9 M T⁻ in acetonitrile-ethylene carbonate (7:3 volume ratio). Dotted lines correspond to the dark-current measurements. (b) Photo-current action spectra of p-type DSSCs based device A and device B. The incident photon to current conversion efficiency (left coordinate) and the ratio of IPCE _{device B}/IPCE _{device A} (right coordinate) are plotted as a function of excitation wavelength. (c) Light-harvesting efficiency (solid line) and absorbed photon-to-electron conversion efficiency (dotted line) calculated with IPCE and the light harvesting efficiency.