Fig. 2

Growth and characterization of ReSe₂ thin films. a Crystal structures of 1 T’ ReSe₂. b–d Schematic models of the graphene substrate and ReSe₂ thin films with 0.3UC and 3UC. e–g RHEED images and h–j AFM images of the ReSe₂ thin film for different growth times (0, 4, and 62 min). The black and red arrows in the RHEED images indicate the bilayer graphene substrate and ReSe₂ diffraction streak, respectively. k Raman spectrum and l HAADF STEM image of the 3UC ReSe₂ film. Scale bars in the AFM and STEM images are 500 nm and 3 nm, respectively