Hydrogen interstitials on the metal plane of TMDC monolayers act as nearly ideal one-electron donors with no in-gap defect states, and diffusion barriers in selenides and tellurides are high enough to keep them in place.
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Stability, efficiency, and mechanism of n-type doping by hydrogen adatoms in two-dimensional transition metal dichalcogenides
Hydrogen interstitials on the metal plane of TMDC monolayers act as nearly ideal one-electron donors with no in-gap defect states, and diffusion barriers in selenides and tellurides are high enough to keep them in place.