Extrinsic Localized Excitons in Patterned 2D Semiconductors
Extrinsic Localized Excitons in Patterned 2D Semiconductors
We demonstrate a new localized excitonic state in patterned monolayer 2D semiconductors. This state is not associated with lattice disorder but is extrinsic, i.e. results from external molecules on the material surface. The signature of an exciton associated with that state is observed in the photoluminescence spectrum after electron beam …