Probing charge transfer excitons in a MoSe2–WS2 van der Waals heterostructure

Nanoscale ◽  
2015 ◽  
Vol 7 (41) ◽  
pp. 17523-17528 ◽  
Author(s):  
Frank Ceballos ◽  
Matthew Z. Bellus ◽  
Hsin-Ying Chiu ◽  
Hui Zhao
Keyword(s):  
Charge Transfer ◽  
Transition Metal ◽  
Van Der Waals ◽  
Transition Metal Dichalcogenides ◽  
Van Der Waals Heterostructures ◽  
Van Der Waals Heterostructure ◽  
Metal Dichalcogenides ◽  
Charge Transfer Excitons

Charge transfer excitons are observed in a van der Waals heterostructures formed by monolayer transition metal dichalcogenides.

scholarly journals A review of molybdenum disulfide (MoS2) based photodetectors: from ultra-broadband, self-powered to flexible devices

RSC Advances ◽  
2020 ◽  
Vol 10 (51) ◽  
pp. 30529-30602 ◽  
Author(s):  
Hari Singh Nalwa
Keyword(s):  
Transition Metal ◽  
Molybdenum Disulfide ◽  
Strong Interaction ◽  
Van Der Waals ◽  
Transition Metal Dichalcogenides ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
Flexible Devices ◽  
Metal Dichalcogenides ◽  
Self Powered

Two-dimensional transition metal dichalcogenides have attracted much attention in the field of optoelectronics due to their tunable bandgaps, strong interaction with light and tremendous capability for developing diverse van der Waals heterostructures with other nanomaterials.

Tunable coupling of terahertz Dirac plasmons and phonons in transition metal dichalcogenide-based van der Waals heterostructures

2D Materials ◽  
2021 ◽  
Author(s):  
Icaro Rodrigues Lavor ◽  
Andrey Chaves ◽  
Francois M Peeters ◽  
Ben Van Duppen
Keyword(s):  
Transition Metal ◽  
Fermi Energy ◽  
Van Der Waals ◽  
Transition Metal Dichalcogenides ◽  
Transition Metal Dichalcogenide ◽  
Phonon Coupling ◽  
Van Der Waals Heterostructures ◽  
Composition And Structure ◽  
Metal Dichalcogenides ◽  
Tunable Coupling

Abstract Dirac plasmons in graphene hybridize with phonons of transition metal dichalcogenides (TMDs) when the materials are combined in so-called van der Waals heterostructures (vdWh), thus forming surface plasmon-phonon polaritons (SPPPs). The extend to which these modes are coupled depends on the TMD composition and structure, but also on the plasmons' properties. By performing realistic simulations that account for the contribution of each layer of the vdWh separately, we calculate how the strength of plasmon-phonon coupling depends on the number and composition of TMD layers, on the graphene Fermi energy and the specific phonon mode. From this, we present a semiclassical theory that is capable of capturing all relevant characteristics of the SPPPs. We find that it is possible to realize both strong and ultra-strong coupling regimes by tuning graphene's Fermi energy and changing TMD layer number.

Two-dimensional transition-metal dichalcogenides-based ferromagnetic van der Waals heterostructures

Nanoscale ◽  
2017 ◽  
Vol 9 (44) ◽  
pp. 17585-17592 ◽  
Author(s):  
Juan Du ◽  
Congxin Xia ◽  
Wenqi Xiong ◽  
Tianxing Wang ◽  
Yu Jia ◽  
...  
Keyword(s):  
Transition Metal ◽  
Electric Field ◽  
Ground State ◽  
Van Der Waals ◽  
Transition Metal Dichalcogenides ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
Metal Dichalcogenides ◽  
Band Alignments ◽  
Curie Temperatures

TMDs-based vdW semiconducting heterostructures have stable ferromagnetic (FM) ground state, high Curie temperatures and electric field-tunable multi-band alignments.

Black phosphorene/monolayer transition-metal dichalcogenides as two dimensional van der Waals heterostructures: a first-principles study

2016 ◽  
Vol 18 (10) ◽  
pp. 7381-7388 ◽  
Author(s):  
Baiqing You ◽  
Xiaocha Wang ◽  
Zhida Zheng ◽  
Wenbo Mi
Keyword(s):  
Electronic Structure ◽  
Transition Metal ◽  
First Principles ◽  
Van Der Waals ◽  
Transition Metal Dichalcogenides ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
First Principles Study ◽  
Black Phosphorene ◽  
Metal Dichalcogenides

The electronic structure of black phosphorene/XT2(X = Mo, W; T = S, Se, Te) two dimensional heterostructures is presented using the first-principles method.

Freestanding van der Waals Heterostructures of Graphene and Transition Metal Dichalcogenides

ACS Nano ◽  
2015 ◽  
Vol 9 (5) ◽  
pp. 4882-4890 ◽  
Author(s):  
Amin Azizi ◽  
Sarah Eichfeld ◽  
Gayle Geschwind ◽  
Kehao Zhang ◽  
Bin Jiang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Van Der Waals ◽  
Transition Metal Dichalcogenides ◽  
Van Der Waals Heterostructures ◽  
Metal Dichalcogenides
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