Fig. 3

DFT calculations of the charge density and band structure of intrinsic and Sn-doped 2D InSe. a, b The differential charge density (a) and the band structure and partial density of states (b) of intrinsic 2D InSe. c, d The differential charge density (c) and the band structure and partial density of states (d) of Sn-doped 2D InSe. The Fermi level is set to be 0 eV. The yellow and cyan areas in a, c represent charge accumulation and depletion, respectively