Fig. 5: Operational stability and mechanical durability of solar cell devices. | Nature Communications

Fig. 5: Operational stability and mechanical durability of solar cell devices.

From: Interpenetrating interfaces for efficient perovskite solar cells with high operational stability and mechanical robustness

Fig. 5: Operational stability and mechanical durability of solar cell devices.

a Operational stability of rigid PSC devices based on FI–SnO2 and pristine SnO2 ETLs under continuous light illumination (one-sun intensity illumination; flowing N2; 40 °C). b Durability of flexible PSC devices based on FI–SnO2 and pristine SnO2 ETLs as a function of mechanical bending cycles (40% RH; ambient air; 25 °C; 3 mm minimum r); Inset illustrates a typical mechanical bending cycle. c Schematic illustrations showing the strains in OIHP layers under different bending states (left panel) and the film states after bending cycles (right panel). d, e Cross-section SEM images of flexible PEN/ITO/SnO2/OIHP film and PEN/ITO/FI–SnO2/OIHP film after different bending cycles.

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