Abstract
We spatiotemporally resolve exciton transport in two-dimensional transition metal dichalcogenides (TMD) in which we incorporate local dielectric inhomogeneities known as nanobubbles. We observe highly efficient exciton funneling in these dielectric inhomogeneities, a process entirely driven by momentum-indirect (dark) excitons whose energies are much more sensitive to dielectric perturbations than bright excitons.
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