In an insulator the Fermi energy lies in the bandgap between the minimum of the conduction band and the maximum of the valence band. The situation changes at the surface of a 3D host (or the edge ...
(d) The relative valence and conduction band edge of some common TMDs (monolayer).(© The Royal Society of Chemistry) (click on image to enlarge) Early research in 2D-TMDs has focused on their ...
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