Fig. 2: Structural characterization of the perylene/GO heterobilayer.
From: Co-assembled perylene/graphene oxide photosensitive heterobilayer for efficient neuromorphics
a Optical image of the heterostructure film transferred onto a 300-nm SiO2/Si wafer. b Raman spectra collected from regions labeled 1–5 in a. c Zoomed-in view of Raman spectra with four-mode absorption. d XRD spectra taken from GO, perylene crystals and their combination. e SAED image of perylene crystal. f Cross-section STEM image of the bilayer perylene/GO structure on a silicon holder. g Ordered molecular arrangement of perylene crystal viewed from the b axis of the lattice and GO layer; yellow, carbon atom; blue, hydrogen atom.
