Fig. 2: The distribution of Cl and the synergistic effect of HABr/Cl2-CF on the perovskite film. | Nature Communications

Fig. 2: The distribution of Cl and the synergistic effect of HABr/Cl2-CF on the perovskite film.

From: Dissolved-Cl2 triggered redox reaction enables high-performance perovskite solar cells

Fig. 2

a Cl 2p XPS spectra of PVSK, PVSK-CF, and PVSK-Cl2-CF. b Cl content at the bottom surface of perovskite films. c Grain size distribution of PVSK, PVSK-HABr/CF, and PVSK-HABr/Cl2-CF. d-f Grazing-incidence wide-angle X-ray scattering (GIWAXS) characterization with a grazing angle of 0.5°. g The space-charge limited-current (SCLC) measurements of the electron-only devices. h Time-resolved photoluminescence (TRPL) and i steady-state photoluminescence (PL) spectra of perovskite films.

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