Fig. 3: Characterizations of perovskite films with and without eBP. | npj 2D Materials and Applications

Fig. 3: Characterizations of perovskite films with and without eBP.

From: Large-area phosphorene for stable carbon-based perovskite solar cells

Fig. 3

a XRD patterns of the perovskite films with and without eBP. Top-view SEM images (scale bar: 1 μm) of b perovskite film and c eBP deposited perovskite film. d HR Pb 4 f core level XPS spectra of perovskite films with and without eBP. e UV–vis spectra (inset shows Tauc plot), (f and g) UPS spectra of the perovskite films with and without eBP. h The measured energy-level values of each component used in the fabrication of PSCs.

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