Fig. 2
The basic characterizations of γ-CuI nanosheets. a The OM image of the γ-CuI nanosheets grown on the SiO2/Si substrate; The white arrows highlight the ultrathin nanosheets that are barely visible. Scale bar, 10 μm. b, c The OM image and AFM image of an ultrathin γ-CuI nanosheet. Scale bar, 2, 1 μm, respectively. d Raman spectrum of the γ-CuI nanosheets. Raman experiment was performed in a confocal spectrograph using a 532 nm excitation laser. e The Raman intensity mapping of a typical γ-CuI nanosheet with Raman peak located at 122 cm−1. Scale bar, 2 μm. f XRD pattern of γ-CuI nanosheets grown on the SiO2/Si substrate
