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. 2023 Mar 15;9(11):eadf4571. doi: 10.1126/sciadv.adf4571

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Fig. 2. — (A) Schematic illustration of band alignment and charge transfer between 1LG and 2LM before and after their vdW contact. Here, E_F refers to the Fermi level. E_c and E_v refer to the conduction band and valence band of 2LM, respectively. (B) Raman spectra of the separate 1LG and the 2LM/1LG vdWH. (C) Side view of isosurface plots of the induced charge density difference for the 2LM/1LG vdWH. The isosurface is taken to be 1 × 10⁻⁴ e/Å³. The red and green regions represent the accumulation and depletion of electrons, respectively.