Extended Data Fig. 11: Variation in photoluminescence emission from MoS2 due to the inhomogeneity of the substrate.
From: Room-temperature electrical control of exciton flux in a van der Waals heterostructure
a, Image of photoluminescence emission coming from the device in the repulsive configuration shown in Fig. 4f. b, Micro-photoluminescence (μPL) spectra from the areas marked by red and blue circles in a, showing different peak widths as a result of local inhomogeneity in the heterostructure. The grey shaded area is the part of the spectrum cut by the 700-nm long-pass filter. As can be clearly seen in the image, areas where MoS2 photoluminescence shows a low-energy tail due to broadening become visible to the CCD (left side of the device), whereas the other areas appear dark (right side).
