Interlayer exciton formation, relaxation, and transport in TMD …
2021年4月2日 · In this review, we give a comprehensive description and discussion of these frontier topics for interlayer excitons in TMD vdW heterostructures to provide valuable guidance for researchers in...
Formation of moiré interlayer excitons in space and time
2022年8月17日 · Our work provides direct access to interlayer exciton formation dynamics in space and time and reveals opportunities to study correlated moiré and exciton physics for the future realization of...
Interlayer excitons - Nature
2018年11月5日 · This Review discusses the contemporary experimental and theoretical understanding of interlayer excitons in heterobilayers of transition metal dichalcogenides.
Interlayer and Moiré excitons in atomically thin double layers: …
2024年9月1日 · Ground-state intralayer excitons (the so-called A excitons) show optical transitions involving an electron in the lowest conduction band and a hole in the highest valence band (red arrows), while intralayer B excitons present optical transitions between the topmost spin–orbit–split conduction band and the lower spin–orbit–split valence band at ±...
Optical absorption of interlayer excitons in transition-metal ...
2022年4月21日 · Interlayer excitons, electron-hole pairs bound across two monolayer van der Waals semiconductors, offer promising electrical tunability and localizability. Because such excitons display weak electron-hole overlap, most studies have examined only the lowest-energy excitons through photoluminescence.
Momentum-Direct Infrared Interlayer Exciton and …
5 天之前 · Interlayer excitons (IX), spatially separated electron–hole pair quasiparticles, can form in type-II van der Waals heterostructures (vdWH). To date, the most widely studied IX in hetero- and homobilayer transition metal dichalcogenides feature momentum-indirect and visible interlayer recombinations. However, momentum-direct IX emissions and interlayer …
Deterministic Areal Enhancement of Interlayer Exciton Emission …
2024年5月14日 · Here, we demonstrate interlayer exciton optoelectronics based on electrostatically defined lateral p-n junctions in a MoSe2-WSe2 heterobilayer. Applying a forward bias enables the first observation of electroluminescence from interlayer excitons.
Electrical control of interlayer exciton dynamics in ... - Science
2019年11月15日 · We demonstrate that neutral interlayer excitons can propagate across the entire sample and that their propagation can be controlled by excitation power and gate electrodes. We also use devices with ohmic contacts to facilitate the drift motion of charged interlayer excitons.
Phys. Rev. B 99, 035443 (2019) - Interlayer excitons in bilayer ...
2019年1月31日 · The interlayer excitons consist of an electron localized in one layer and a hole state delocalized over the bilayer, which results in the unusual combination of high oscillator strength and a static dipole moment.
Moiré potential impedes interlayer exciton diffusion in van
2020年9月23日 · In a moiré crystal with a large supercell and deep potential, interlayer excitons may be completely localized. As the moiré period reduces at a larger twist angle, excitons can tunnel between supercells and diffuse over a longer lifetime.