Science Advances

Supplementary Materials

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  • fig. S1. AFM image of MoSe2 monolayers.
  • fig. S2. SEM and AFM images of GaSe/MoSe2 vdW heterostructures.
  • fig. S3. TEM and electron diffraction analyses of the GaSe/MoSe2 vdW heterostructure.
  • fig. S4. Structural analyses of the GaSe/MoSe2 vdW heterostructure.
  • fig. S5. Structure of lateral 1L GaSe/MoSe2 on the SiO2/Si substrate.
  • fig. S6. Electrical performance of the monolayer GaSe/MoSe2 lateral junction grown on SiO2/Si.
  • fig. S7. Structural analyses of lateral 1L GaSe/MoSe2 on 1L MoSe2.
  • fig. S8. AFM image corresponding to the optical image in Fig. 4A.
  • fig. S9. Enlarged view of Raman spectra shown in Fig. 4B.
  • fig. S10. Calculation of charge transfer between intrinsic GaSe and MoSe2 monolayers.
  • fig. S11. PL emission spectra of MoSe2 and GaSe/MoSe2 vdW heterostructures, obtained from PL emission mapping in Fig. 4A.
  • fig. S12. Absorption spectra of monolayer GaSe grown on transparent mica.
  • fig. S13. DFT calculation of the band structure of the GaSe/MoSe2 vdW heterostructure.
  • fig. S14. Ids-Vds curves under white light illumination across the heterojunction at different back-gate voltages.

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