Fig. 2: Topography and spatial distribution of the HPDA in the perovskite film. | Nature Communications

Fig. 2: Topography and spatial distribution of the HPDA in the perovskite film.

From: Boosting mechanical durability under high humidity by bioinspired multisite polymer for high-efficiency flexible perovskite solar cells

Fig. 2

Top-view of (a) control and b HPDA-modified perovskite films. c Cross-sectional SEM images of control and HPDA-modified perovskite films. d Cross-sectional transmission electron microscopy (TEM) images of HPDA-modified PSCs. Grazing incidence X-ray Diffraction (GIXRD) patterns at different Ψ angles (from 0° to 55°) for (e) control and f HPDA-modified perovskite films, respectively. g Lattice spacing d(012) versus sin2(Ψ) plots for control and HPDA-modified perovskite films. SThM topography and corresponding thermal images of top and bottom surfaces for (h) control and i HPDA-modified perovskite films. Scale bar: 400 nm. Source data are provided as a Source data file.

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