Excitons dominate the photonic and optoelectronic properties of a material. Although
significant advancements exist in understanding various types of excitons, progress on
excitons that are indirect in both real-and momentum-spaces is still limited. Here, we
demonstrate the real-and momentum-indirect neutral and charged excitons (including their
phonon replicas) in a multi-valley semiconductor of bilayer MoS 2, by performing electric-
field/doping-density dependent photoluminescence. Together with first-principles …