Fig. 5: Photophysical properties of perovskite films and devices. | npj Flexible Electronics

Fig. 5: Photophysical properties of perovskite films and devices.

From: Mechanically stable screen-printed flexible perovskite solar cells via selective self-assembled siloxane coupling agents

Fig. 5

a UPS spectra of secondary electron cut-off and valence bands of SnO2 film and SCAs-SnO2 film. b Energy level diagram of SnO2/perovskite and SnO2/SCAs/perovskite. c Steady-state PL and d TRPL decay spectra of perovskite films with or without SCAs modification. e Dark J–V curves of PSCs. f VOC as a function of light intensities of PSCs. g Statistical diagram of trap density of the electron-only device. h Mott–Schottky plots. i Nyquist plots (inset is an equivalent circuit for data fitting).

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