Electrically controllable router of interlayer excitons.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 33028515.
- Also identified by DOI 10.1126/sciadv.aba1830 and PMC identifier 7541059.
- Licence recorded as CC BY-NC.
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Abstract
Optoelectronic devices that allow rerouting, modulation, and detection of the optical signals would be extremely beneficial for telecommunication technology. One of the most promising platforms for these devices is excitonic devices, as they offer very efficient coupling to light. Of especial importance are those based on indirect excitons because of their long lifetime. Here, we demonstrate excitonic transistor and router based on bilayer WSe<sub>2</sub> Because of their strong dipole moment, excitons in bilayer WSe<sub>2</sub> can be controlled by transverse electric field. At the same time, unlike indirect excitons in artificially stacked heterostructures based on transition metal dichalcogenides, naturally stacked bilayers are much simpler in fabrication.