Microscopy from Scientific Research

Optical microscope image of a MoSe 2 device fabricated on a glass (SiO 2 ) substrate. The device consists of a vertical stack of a top hBN (t-hBN) protection layer, a MoSe 2 monolayer, a graphene (Gr) monolayer, a ~3.3-nm-thick tunnel hBN layer (tnl-hBN) and a Au electrode. The graphene/hBN/Au tunnel junction is indicated by the white dashed line, where the graphene is partially covered by a MoSe 2 monolayer (red polygon) on top. The upper two electrodes on the left serve as electrical contacts to the graphene sheet. Scale bar, 10 m.

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