Researchers directly observe dark excitons in TMDs for the first time

Researchers at the Okinawa Institute of Science and Technology (OIST) have managed to directly observe dark excitons in TMD 2D materials for the first, which may be a first step towards the use of this phenomena in valleytronics devices.

The researchers believe that dark excitons have great potential as information carriers, because they are inherently less likely to interact with light, and hence less prone to degradation of their quantum properties. On the other hand, this this invisibility also makes them very challenging to study and manipulate. The researchers now believe they have opened a route to the creation, observation, and manipulation of dark excitons.