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. 2022 Apr 20;9(18):2105974. doi: 10.1002/advs.202105974

Figure 1.

Figure 1

Characterization of MDABCO‐NH4I3 films. a) Schematic illustration of the MDABCO‐NH4I3 structure. b) XRD patterns of the MDABCO‐NH4I3 films with various precursor concentrations. c) XRD patterns of the MDABCO‐NH4I3 films with various preheating temperature. The precursor concentration is fixed at 0.75 m. d) SEM top view images of MDABCO‐NH4I3 films prepared with various precursor concentrations and temperatures. e) Cross‐sectional SEM image of the MDABCO‐NH4I3 film prepared with precursor concentration of 0.75 m and preheating temperature of 140 °C (scale bar = 1 µm).