scholarly journals Repression of Interlayer Recombination by Graphene Generates a Sensitive Nanostructured 2D vdW Heterostructure Based Photodetector (Adv. Sci. 15/2021)

2021 ◽  
Vol 8 (15) ◽  
pp. 2170094
Author(s):  
Huide Wang ◽  
Shan Gao ◽  
Feng Zhang ◽  
Fanxu Meng ◽  
Zhinan Guo ◽  
...  
Keyword(s):  
Vdw Heterostructure

A first-principles study on the electronic and optical properties of a type-II C2N/g-ZnO van der Waals heterostructure

2021 ◽  
Vol 23 (6) ◽  
pp. 3963-3973
Author(s):  
Jianxun Song ◽  
Hua Zheng ◽  
Minxia Liu ◽  
Geng Zhang ◽  
Dongxiong Ling ◽  
...  
Keyword(s):  
Optical Properties ◽  
Dft Calculations ◽  
First Principles ◽  
Van Der Waals ◽  
Band Alignment ◽  
Type Ii ◽  
Electronic And Optical Properties ◽  
Direct Bandgap ◽  
Van Der Waals Heterostructure ◽  
Vdw Heterostructure

The structural, electronic and optical properties of a new vdW heterostructure, C2N/g-ZnO, with an intrinsic type-II band alignment and a direct bandgap of 0.89 eV at the Γ point are extensively studied by DFT calculations.

scholarly journals Natural van der Waals heterostructure cylindrite with highly anisotropic optical responses

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Arindam Dasgupta ◽  
Jie Gao ◽  
Xiaodong Yang
Keyword(s):  
Van Der Waals ◽  
Linear Dichroism ◽  
Third Harmonic ◽  
Inhomogeneous Strain ◽  
Optical Responses ◽  
Naturally Occurring ◽  
Van Der Waals Heterostructure ◽  
Vdw Heterostructure ◽  
Polarized Raman ◽  
On Chip

AbstractThe mechanical exfoliation of naturally occurring layered materials has emerged as an easy and effective method for achieving ultrathin van der Waals (vdW) heterostructures with well-defined lattice orientations of the constituent two-dimensional (2D) material layers. Cylindrite is one such naturally occurring vdW heterostructure, where the superlattice is composed of alternating stacks of SnS2-like and PbS-like layers. Although the constituent 2D lattices are isotropic, inhomogeneous strain occurring from local atomic alignment for forcing the commensuration makes the cylindrite superlattice structurally anisotropic. Here, we demonstrate the highly anisotropic optical responses of cylindrite thin flakes induced by the anisotropic crystal structure, including angle-resolved polarized Raman scattering, linear dichroism, and polarization-dependent anisotropic third-harmonic generation. Our results provide a promising approach for identifying various natural vdW heterostructure-based 2D materials with tailored optical properties and can be harnessed for realizing anisotropic optical devices for on-chip photonic circuits and optical information processing.

Two-dimensional C3N/blue phosphorene vdW heterostructure for Li, Na and K-ion batteries

2021 ◽  
Author(s):  
Mohammad Ubaid ◽  
Anver Aziz ◽  
Bhalchandra S. Pujari
Keyword(s):  
Van Der Waals ◽  
Potassium Ion ◽  
Two Dimensional ◽  
Van Der Waals Heterostructure ◽  
Vdw Heterostructure ◽  
Sodium And Potassium ◽  
Blue Phosphorene

We investigate a van der Waals heterostructure constructed using BP and C3N and investigate its use as an anode for lithium-, sodium- and potassium-ion batteries.

Strain-Induced Band Structure Modulation in Hexagonal Boron Phosphide/Blue Phosphorene vdW Heterostructure

2018 ◽  
Vol 122 (45) ◽  
pp. 26120-26129 ◽  
Author(s):  
Jialin Li ◽  
Haiming Duan ◽  
Bowen Zeng ◽  
Qun Jing ◽  
Biaobin Cao ◽  
...  
Keyword(s):  
Band Structure ◽  
Boron Phosphide ◽  
Structure Modulation ◽  
Vdw Heterostructure ◽  
Blue Phosphorene

scholarly journals Fabrication of Nanopore in MoS2-Graphene vdW Heterostructure by Ion Beam Irradiation and the Mechanical Performance

Nanomaterials ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 196
Author(s):  
Xin Wu ◽  
Ruxue Yang ◽  
Xiyue Chen ◽  
Wei Liu
Keyword(s):  
Mechanical Performance ◽  
Ion Irradiation ◽  
Ion Beam ◽  
Tensile Tests ◽  
Uniaxial Tensile ◽  
Beam Irradiation ◽  
Ion Beam Irradiation ◽  
Stacking Order ◽  
Vdw Heterostructure ◽  
Nanopore Structure

Nanopore structure presents great application potential especially in the area of biosensing. The two-dimensional (2D) vdW heterostructure nanopore shows unique features, while research around its fabrication is very limited. This paper proposes for the first time the use of ion beam irradiation for creating nanopore structure in 2D vdW graphene-MoS2 heterostructures. The formation process of the heterostructure nanopore is discussed first. Then, the influence of ion irradiation parameters (ion energy and ion dose) is illustrated, based on which the optimal irradiation parameters are derived. In particular, the effect of stacking order of the heterostructure 2D layers on the induced phenomena and optimal parameters are taken into consideration. Finally, uniaxial tensile tests are conducted by taking the effect of irradiation parameters, nanopore size and stacking order into account to demonstrate the mechanical performance of the heterostructure for use under a loading condition. The results would be meaningful for expanding the applications of heterostructure nanopore structure, and can arouse more research interest in this area.

Self-Driven Photodetector and Ambipolar Transistor in Atomically Thin GaTe-MoS2 p–n vdW Heterostructure

2016 ◽  
Vol 8 (4) ◽  
pp. 2533-2539 ◽  
Author(s):  
Shengxue Yang ◽  
Cong Wang ◽  
Can Ataca ◽  
Yan Li ◽  
Hui Chen ◽  
...  
Keyword(s):  
Vdw Heterostructure

Tunable electronic properties of the novel g-ZnO/1T-TiS2 vdW heterostructure by electric field and strain: crossovers in bandgap and band alignment types

2020 ◽  
Vol 22 (14) ◽  
pp. 7412-7420 ◽  
Author(s):  
Kourosh Rahimi
Keyword(s):  
Electric Field ◽  
Electronic Properties ◽  
Band Alignment ◽  
The Novel ◽  
Biaxial Strain ◽  
Tunable Bandgap ◽  
Vdw Heterostructure

The promising g-ZnO/1T-TiS2 vdW heterostructure with tunable bandgap and band alignment type under biaxial strain and electric field was proposed.

Ultrahigh-photoresponsive UV photodetector based on a BP/ReS2 heterostructure p–n diode

Nanoscale ◽  
2018 ◽  
Vol 10 (35) ◽  
pp. 16805-16811 ◽  
Author(s):  
Shiwei Cao ◽  
Yanhui Xing ◽  
Jun Han ◽  
Xin Luo ◽  
Wenxing Lv ◽  
...  
Keyword(s):  
Lattice Mismatch ◽  
Van Der Waals ◽  
Optoelectronic Properties ◽  
Van Der Waals Interactions ◽  
Two Dimensional ◽  
Interface Quality ◽  
Uv Photodetector ◽  
Mismatch Problem ◽  
Two Dimensional Materials ◽  
Vdw Heterostructure

The van der Waals (vdW) heterostructure, made up of two dissimilar two-dimensional materials held together by van der Waals interactions, has excellent electronic and optoelectronic properties as it provides a superior interface quality without the lattice mismatch problem.

The strain effect on the electronic properties of the MoSSe/WSSe van der Waals heterostructure: a first-principles study

2020 ◽  
Vol 22 (9) ◽  
pp. 4946-4956 ◽  
Author(s):  
Wenyu Guo ◽  
Xun Ge ◽  
Shoutian Sun ◽  
Yiqun Xie ◽  
Xiang Ye
Keyword(s):  
Electronic Properties ◽  
First Principles ◽  
Van Der Waals ◽  
Strain Effect ◽  
Vertical Strain ◽  
First Principles Study ◽  
Van Der Waals Heterostructure ◽  
Vdw Heterostructure

The structural, mechanical and electronic properties of the MoSSe/WSSe van der Waals (vdW) heterostructure under various degrees of horizontal and vertical strain are systematically investigated based on first-principles methods.

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