Double-Layered Zirconia Films for Carbon-Based Mesoscopic Perovskite Solar Cells and Photodetectors

Figure 8

Typical - curves of PSCs prepared with different spacer thicknesses of (a) N_ZrO₂ films and (b) DL_ZrO₂ films. Inset graphs: efficiency variation with ZrO₂ film thickness and in parentheses number of devices used for calculation of the error bars.

(a)

(b)