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Figure 1

From: Ultra-Bright Near-Infrared Perovskite Light-Emitting Diodes with Reduced Efficiency Roll-off

Figure 1

A cartoon representing the influence of the starch molecules on the perovskite film morphology and structure upon starch addition (a). SEM images of perovskite films fabricated by one step deposition of FAPbI3 precursors solutions mixed with different starch %wt. content (scale bar 1 μm) (b), XRD spectra of the respective films: α, δ and ° denote the identified diffraction peaks corresponding to the α and δ phases of FAPbI3 perovskite and ITO substrate, respectively (c).

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