F., "Probing Interlayer Interactions in Transition Metal Dichalcogenide Heterostructures by Optical Spectroscopy: MoS2 /WS2 and MoSe2 /WSe2," Nano Lett. 15(8), 5033-5038 (2015).Ceballos, F.; Bellus, M. Z.; Chiu, H.-Y.; Zhao, H. Ultrafast Charge Separation and Indirect Exciton Formation...
The strong emission and single symmetric PL peak at ~ 1.60 eV suggest the direct band-gap nature of monolayer WSe2 [33, 35, 36]. It is reported that the PL spectrum of multilayer WSe2 shows the “A” exciton peak and an additional broad peak at ~ 885 nm (call as “I” peak...
In the case of MoS2, we observed that the electron-phonon coupling is symmetry dependent, and our results provide experimental evidence of the C exciton recently predicted theoretically. The RRS results WSe2 show that the Raman modes are enhanced by the excited excitonic states and we will ...
will depend on the ratio oft⊥versus the spin–orbit VB splitting45, which is much smaller in MoS2(ΔSO ≈ 150 meV) as compared to WSe2(ΔSO ≈ 430 meV). This leads in principle to tunable interlayer coupling for MoS246and so-called spin-layer-locking for WSe2bilayers47...
and WSe2 Fang Wang, Junyong Wang, Shuang Guo, Jinzhong Zhang, Zhigao Hu & Junhao Chu The interlayer interaction of vertically stacked heterojunctions is very sensitive to the interlayer spacing, which will affect the coupling between the monolayers and allow band structure modulation....
In addition, for MoS2/WS2 with θ ≈ 1.8° and MoSe2/WSe2 with θ ≈ 2.4° the energy profile for interlayer interband exciton resembles an antidot superlattice more than an array of QDs. This contrasts with the persistence up to θ ~ 3.5° of shallow QD arrays for both...
semiconductors MoS2, MoSe2, WS2, WSe2 and black phosphorus have garnered tremendous interest for their unique electronic, optical, and chemical properties. ... DS Zhang,PZ Yan,P Y Li,... - 《Angewandte Chemie》 被引量: 164发表: 2015年 First-principles theory of field-effect doping in...
A proposed solution is using a monolayer WSe2 diode, in which the p–n junction is created electrostatically by means of two independent gate voltages [20], [44], [45]. Another active field of research is the design of van der Waals heterostructures. Assembling atomically thin layers of ...
Controlling interlayer excitons in MoS2layers grown by chemical vapor deposition ArticleOpen access13 May 2020 Moiré excitons in MoSe2-WSe2heterobilayers and heterotrilayers ArticleOpen access12 March 2021 Strong coupling and pressure engineering in WSe2–MoSe2heterobilayers ...
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