In addition to that, a different type of exciton emerges when a van-der-Waals heterostructure is assembled by deterministically stacking two different monolayer TMDCs. Here, we demonstrate a WSe2/WS2 type-II heterostructure where the electrons transfer to the WS2 layer whereas the holes transfer ...
This energy is at the onset of the interlayer exciton PL spectrum, Fig. 1d (iii), and below the optical bandgaps of WSe2 and WS2 monolayers. Figure 1e displays the PL intensity map under 1.50 eV excitation. The emission is only observed from the heterostructure region with both ...
Heterobilayers of transition metal dichalcogenides (TMDCs) can form a moiré superlattice with flat minibands, which enables strong electron interaction and leads to various fascinating correlated states. These heterobilayers also host interlayer exciton
Anomalous Interlayer Exciton Diffusion in WS 2 /WSe 2 Moire Heterostructure We investigate the diffusion of photoexcited electron-hole pairs, or excitons, at the interface of WS2/WSe2 van der Waals heterostructure over a wide ... A Rossi,J Zipfel,I Maity,... - 《Acs Nano》 被引量: 0发表...
8.[3].rossjs,etal.interlayerexcitonoptoelectronicsina2dheterostructurep-njunction.nanolett.17,638-643(2017). [0009] [4].lim-y,etal.epitaxialgrowthofamonolayerwse 2-mos2lateralp-njunctionwithanatomicallysharpinterface.science.349,524-528(2015). ...
Although interlayer excitons were indicated using femtosecond pump–probe spectroscopy, photoluminescence and absorption spectroscopies did not show any evidence of them, suggesting that the interlayer exciton transition is very weak. However, the interlayer coupling for the WSe2/WS2 bilayer heterojunctions ...
(6): 2354–2363 Mixed-dimensional WS2/WSe2/Si unipolar barrier heterostructure for high- performance photodetection Zihao Huang1, Mengmeng Yang1, Zhicong Qiu1, Zhongtong Luo1, Yu Chen2*, Chun Du3*, Jiandong Yao4, Huafeng Dong5, Zhaoqiang Zheng1* and Jingbo Li6 ABSTRACT The use of ...
Probing interlayer interactions in transition metal dichalcogenide heterostructures by optical spectroscopy: MoS2/WS2 and MoSe2/WSe2. Nano Lett. 15, 5033-5038... AF Rigosi,HM Hill,Y Li,... 被引量: 42发表: 2015年 Interlayer coupling and gate-tunable excitons in transition metal dichalcogenide he...
We observed different ultrafast charge transfer behaviors in 1L-WSe 2 /2L-WS 2 and 2L-WSe 2 /2L-WS 2 few-layer heterostructures. We demonstrate that the layer thickness determines the sequence of intralayer exciton relaxation and interlayer charge transfer. The valley transfer of the band edge...
Mott and generalized Wigner crystal states in WSe2/WS2 moiré superlattices Article 18 March 2020 Correlated interlayer exciton insulator in heterostructures of monolayer WSe2 and moiré WS2/WSe2 Article 08 August 2022 Data availability The data that support the findings of this study are availa...