Extended Data Fig. 6: Electrostatics phase diagram (device 2).
a-d, Electric-field (E) and gate \(({V}_{t}+{V}_{b})\) dependences of the spectral feature corresponding to the sensor 2 s exciton (a), charged exciton X−of the target layer (b), moiré exciton MX1 (c) and MX2 (d). The analysis of the reflectance contrast spectra is described in Methods. The X− reflectance (b) determines the boundary between the doped (high) and neutral (low) target layer (black solid line). It also determines the boundaries (black dashed lines) of the \(({\nu }_{m},{\nu }_{t})=({\nu }_{m},1)\) region. The MX1 reflectance (c) determines the boundary between the doped (low) and neutral (high) moiré layer (pink solid line). The MX2 reflectance (d) determines the boundaries of the \(({\nu }_{m},{\nu }_{t})=(1,{\nu }_{t})\) region with enhanced contrast (pink dashed lines). These boundaries are included in a.
