Fig. 5: Atomic scale imaging and geometric phase analysis (GPA) of surface-guided CsPbBr3 nanowires. | Nature Communications

Fig. 5: Atomic scale imaging and geometric phase analysis (GPA) of surface-guided CsPbBr3 nanowires.

From: Large lattice distortions and size-dependent bandgap modulation in epitaxial halide perovskite nanowires

Fig. 5

(a) Large field-of-view, high-resolution STEM image of the entire cross-section. (b) Fast Fourier transform of the entire cross-section revealing arcs instead of spots for CsPbBr3 spacings (green), and sharp single spots for sapphire spacings (blue). (c) High magnification image of the CsPbBr3 lattice. (d) GPA generated lattice rotation map and maps for in-plane (e), out-of-plane (f), and shared (g) strain.

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