Fig. 3: Structural characterization of α-Te and β-Te on WS2.
From: Phase-engineered synthesis of atomically thin te single crystals with high on-state currents
a, b Atomic-resolution scanning transmission electron microscopy (STEM) images of α-Te nanosheets (a) and β-Te nanoribbons (b) on WS2. The insets show top views of atomic models of the α-Te/WS2 (a) and β-Te/WS2 (b) heterostructures. Atomic color code: purple, Te; blue, W; yellow, S. The red parallelograms in a, b and the corresponding insets highlight the periodically repeating moiré cells of α-Te/WS2 (a) and β-Te/WS2 (b), respectively. c, e High-resolution transmission electron microscopy (HRTEM) images of α-Te nanosheets (c) and β-Te nanoribbons (e) on WS2. d, f Selected area electron diffraction (SAED) patterns of the α-Te/WS2 vdW crystal (d) and β-Te/WS2 vdW crystal (f). The blue, red, and green circles in d and f represent the SAED patterns for WS2, α-Te, and β-Te, respectively. g, l Low-magnification transmission electron microscopy images of α-Te nanosheets (g) and β-Te nanoribbons (l) on WS2. h–p Energy dispersive spectrometer (EDS) mapping and EDS elemental analysis of α-Te nanosheets (h–j, k) and β-Te nanoribbons (m–o, p) on WS2. Atom color code: purple, Te; blue, W; yellow, S.
