Moiré potential impedes interlayer exciton diffusion in van der Waals heterostructures.

The article provides information on a study that uses spatially and time-resolved photoluminescence (PL) measurements to investigate the influence of the moiré potential on interlayer exciton (IX) diffusion in WSe2/MoSe2 hBLs. Topics discussed include explanation on the strikingly different IX diffusion in chemical vapor deposition (CVD) and mechanical exfoliation and transfer (MET) hBLs, and results of the study.