Amplification of interlayer exciton emission in twisted WSe2/WSe2/MoSe2 heterotrilayersDENSITY functional theoryCIRCULAR polarizationHETEROSTRUCTURESTRANSITION metalsVan der Waals heterostructures based on transition metal dichalcogenides exhibit physical properties that depend on their monolayer constituents' twisting...
Our results provide insight into the physical mechanism of LIX formation in moiré heterostructures and pave new directions for engineering interlayer exciton properties in moiré superlattices.Similar content being viewed by others Localized interlayer excitons in MoSe2–WSe2 heterostructures without a ...
Interlayer exciton transport in MoSe2/WSe2 heterostructures. ACS Nano 15, 1539–1547 (2021). 24. Brotons-Gisbert, M. et al. Moire-trapped interlayer trions in a charge-tunable AUTHOR CONTRIBUTIONS J.R.S. and B.J.L. conceived and supervised the project. F.M. fabricated the structures ...
1-μW (red curve) and 100-μW (blue curve) laser excitation power,P, at 4 K. The spectrally integrated PL intensity of the interlayer exciton with respect toPis shown in Fig.2b. While the interlayer exciton emission starts with a linear dependence onP, it...
(c) Type-II semiconductor band alignment diagram for the 2D MoSe2–WSe2 heterojunction. From the intralayer and interlayer exciton spectral positions, we can infer the band offsets between the WSe2 and MoSe2 monolayers (Fig. 2c). The energy difference between XW and XI at room temperature ...
Here we reveal two distinct phase transitions for interlayer excitons in the MoSe2/WSe2 heterobilayer using time and spatially resolved photoluminescence imaging: from trapped excitons in the moiré potential to the modestly mobile exciton gas as exciton density increases to nex1011 cm2 and from the...
I will discuss the dynamics and spin-valley effects of these bright interlayer excitons. 机译:原子薄的半导体,例如单层MoSe_2和WSe_2,已经成为新型的光电子材料,具有耦合的自旋谷电子物理学和在室温下牢固结合的激子。最近显示,这些材料可以构成原子上薄的p-n结,晶体管,发光二极管和低阈值...
Measurement of the optical dielectric function of monolayer transition-metal dichalcogenides: MoS2, MoSe2, WS2, and WSe2, Yilei Li, Alexey Chernikov, Xian Zhang, Albert Rigosi, Heather M. Hill, Arend M. van der Zande, Daniel A. Chenet, En-Min Shih,James Hone, andTony F. Heinz;Phys....
albeit strongly quenched, due to interlayer charge transfer that occurs over sub-picosecond timescales, faster than the exciton lifetime29–31. The most prominent emission feature from the HBL is at ~1.38 eV and is attributed to IXs formed by an electron in the MoSe2 and a hole in the ...
Interlayer exciton transport in MoSe2/WSe2 hetero- structures. ACS Nano 15, 1539–1547 (2021). 22. Susarla, S. et al. Hyperspectral imaging of exciton confinement within a moiré unit cell with a subnanometer electron probe. Sci- ence 378, 1235–1239 (2022). 23. Seyler, K. L. et al...