Fig. 2: Crystal structure characterization of the three crystalline RP.
From: Phase-selective synthesis and polymorphic transformation of crystalline red phosphorus
a–c Low-magnification high-angle annular dark field-scanning transmission electron microscopy (HAADF-STEM) images of Form II, IV, and V obtained via liquid exfoliation, along with the elemental mappings for P, O, and I. The scale bars in the elemental mappings are consistent with those in the HADDF images. d, f, h High-resolution transmission electron microscopy (HRTEM) images and (e, g, i) corresponding selected area electron diffraction (SAED) patterns of Form II, IV, and V, respectively. The pink wavy line denotes the “wavy packing” in the lattice fringes of Form II. The zone axis directions for the SAED patterns of Form II, IV, and V are \([011]\), [\(\bar{1}\bar{1}\bar{3}\)], and [\(001\)], respectively.
