KPFM shows work function rising with layer number in MoS2 bilayers, with larger differences in AB stacking due to stronger interlayer coupling, plus n-type photogating from substrate effects and surface traps.
Charge transport in 2d mos2, ws2, and mos2–ws2 heterojunction-based field-effect transistors: Role of ambipolarity.The Journal of Physical Chemistry C, 124(42):23368– 23379
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Nanoscale mapping of stacking-dependent work function and local photoresponse in CVD-grown MoS2 bilayers by KPFM
KPFM shows work function rising with layer number in MoS2 bilayers, with larger differences in AB stacking due to stronger interlayer coupling, plus n-type photogating from substrate effects and surface traps.