Figure 2.

Charge transfer dynamics in AB₁‐2H stacked MoS₂/WS₂ bilayers. a) Energy band dispersion of MoS₂/WS₂ bilayer in AB₁‐2H stacking order. |1>, |−1>, and |−2> indicate these corresponding states at K point in the Brillouin zone. b) Evolution of electronic energy levels after photoexcitation. The orange (dark yellow) curve indicates the energy levels of photoexcited hole (electron) states. c) The fractions of photoexcited holes (electrons) that transferred from MoS₂ to WS₂ layer. d–f) Snapshots of the spatial distribution of hole density at 0, 60, and 150 fs after photoexcitation at a contour level of 0.02 e Å⁻³. The upper (lower) layer is WS₂ (MoS₂).