Figure 3 | Crystal lattice structure changes, resulted from the friction-induced surface electrostatic field of the MHP film. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Figure 3 | Crystal lattice structure changes, resulted from the friction-induced surface electrostatic field of the MHP film.

Caption

Figure 3 | Crystal lattice structure changes, resulted from the friction-induced surface electrostatic field of the MHP film. (a) Diffraction peaks of (100) crystal facets in GIXRD patterns. (b) one-dimensional integration plots of GIWAXS tested at different incident angles for control, Cu- and Al-scraped regions on the surface of the MAPbBr3 film. (c) Crystal plane orientation of the MAPbBr3 film after friction with Cu and Al. (d) Schematic diagrams of stretched and compressed perovskite lattice structures caused by friction with low Fermi-level (LFL) and high Fermi-level (HFL) materials. (e) Band structures obtained from DFT calculations. (f) Defect density of the perovskite film before and after the lattice stretch.

Credit

Xin Guo et al.

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