Science Advances

Supplementary Materials

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  • Supplementary Text
  • Fig. S1. 2D MoSe2/WSe2 heterostructure samples.
  • Fig. S2. Determination of monolayer orientation via polarization-resolved SHG.
  • Fig. S3. Determination of monolayer orientation via polarization-resolved SHG: The case of rotating laser polarization.
  • Fig. S4. Low-temperature spectroscopy-microscopy setup.
  • Fig. S5. Time resolution of TRPL and pump-probe experiments.
  • Fig. S6. Calculated optical absorptances for monolayer WSe2, monolayer MoSe2, and WSe2/MoSe2 heterobilayer based on the reported dielectric constants in (17).
  • Fig. S7. Calibration of steady-state excitation density.
  • Fig. S8. Band structure model for the AA-stacked MoSe2-WSe2 heterolayer, including the high-symmetry points Γ and K, as well as the Q point in between.
  • Fig. S9. Dielectric structure model.
  • Fig. S10. PL of the misaligned heterostructure.
  • Fig. S11. Comparison of steady-state and pulsed PL spectra at similar carrier densities.
  • Fig. S12. Excitation density and temperature-dependent PL spectra from the WSe2/MoSe2 heterobilayer.
  • Fig. S13. BN-encapsulated monolayer MoSe2 and WSe2 samples.
  • Fig. S14. Electron-hole plasma dynamics in monolayers by transient reflectance.
  • Table S1. Band edges, effective masses, and layer contributions for the AA-stacked MoSe2-WSe2 heterolayer according to the notation in fig. S8.
  • References (4349)

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