Using angle-resolved cathodoluminescence, the authors show that dark excitons in monolayer WSe2 emit at large angles, providing a nanostructure-free route for directional light emission.
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Beam Routing through Excitons in Transition Metal Dichalcogenide Monolayers
Using angle-resolved cathodoluminescence, the authors show that dark excitons in monolayer WSe2 emit at large angles, providing a nanostructure-free route for directional light emission.