fig3

From: Organic-inorganic hybrid quasi-2D perovskites incorporated with fluorinated additives for efficient and stable four-terminal tandem solar cells

Organic-inorganic hybrid quasi-2D perovskites incorporated with fluorinated additives for efficient and stable four-terminal tandem solar cells

Figure 3. Device configuration and photovoltaic performance of PSCs. (A) Schematic structure and (B) cross-sectional SEM image of PSCs with glass/FTO/SnO₂/perovskite/spiro-OMeTAD/80-nm-Au configuration. (C) Valence-band XPS spectra and (D) corresponding energy level alignment diagrams. (E) Typical J-V plots, (F) IPCE spectra and (G) box diagrams of V_OC, J_SC, FF and PCE distributions of 24 individual PSCs with different n values. (H) Normalized PCE retentions of different PSCs without encapsulation under continuous heating at 60 °C and simultaneous exposure to humid air with a RH of 60%.