A5059661400- 2D Materials and Applications
- MXene and MAX Phase Materials
- Graphene research and applications
- Semiconductor Quantum Structures and Devices
- Quantum and electron transport phenomena
- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Topological Materials and Phenomena
- Quantum Information and Cryptography
- Quantum Dots Synthesis And Properties
- Boron and Carbon Nanomaterials Research
- Nonlinear Optical Materials Studies
- Advanced Thermoelectric Materials and Devices
- Mechanical and Optical Resonators
- Quantum optics and atomic interactions
- GaN-based semiconductor devices and materials
- Optical properties and cooling technologies in crystalline materials
- Plasmonic and Surface Plasmon Research
- Photonic and Optical Devices
- Molecular Junctions and Nanostructures
- Strong Light-Matter Interactions
- Heusler alloys: electronic and magnetic properties
- Physics of Superconductivity and Magnetism
- Iron-based superconductors research
- Thermal properties of materials
Dong Thap University
2016-2025
Le Quy Don Technical University
2017-2023
Ton Duc Thang University
2018-2019
Institute of Materials Science
2018-2019
Duy Tan University
2014-2019
Trường ĐH Nguyễn Tất Thành
2019
Abbottabad University of Science and Technology
2019
Hazara University
2018-2019
Saigon University
2019
Viet Nam University Of Traditional Medicine
2018-2019
In this work, we construct an ultrathin graphene/GaS heterostructure and investigate its electronic properties as well the effect of vertical strain using density functional theory. The calculated results equilibrium interlayer spacing (3.356 Å) binding energy show that intrinsic isolated graphene GaS monolayers can be preserved weak van der Waals interactions are dominated in heterostructures. (vdWH) forms n-type Schottky contact with a small barrier height 0.51 eV. This also tuned by...
The breaking of the vertical symmetry in Janus monochalcogenides gave rise to many properties that were not present original monochalcogenide monolayers. However, recent papers have often focused only on containing S, Se, and Te elements despite O is also one group VI chalcogen elements. In this paper, we systematically investigate electronic, transport, optical, thermoelectric monolayers ${\mathrm{In}}_{2}X\mathrm{O}$ ($X=\mathrm{S},\mathrm{Se},\mathrm{Te}$) using first-principles...
Two-dimensional graphene-based van der Waals heterostructures have received considerable interest because of their intriguing characteristics compared with the constituent single-layer two-dimensional materials. Here, we investigate interfacial characteristics, Schottky contact, and optical performance $\mathrm{graphene}/{\mathrm{Ga}}_{2}\mathrm{SSe}$ (vdW) heterostructure using first-principles calculations. The effects stacking patterns, electric gating, interlayer coupling on properties...
In this work, using density functional theory we investigated systematically the electronic properties and Schottky barrier modulation in a multilayer graphene/bilayer-GaSe heterostructure by varying interlayer spacing applying an external electric field. At equilibrium state, graphene is bound to bilayer-GaSe weak van der Waals interaction with distance d of 3.40 Å binding energy per carbon atom -37.71 meV. The projected band structure appears as combination each bilayer-GaSe. Moreover,...
In the present work, we investigate systematically electronic and optical properties of Janus ZrSSe using first-principles calculations. Our calculations demonstrate that monolayer is an indirect semiconductor at equilibrium. The band gap 1.341 eV Heyd-Scuseria-Ernzerhof hybrid functional, larger than ZrSe2 smaller ZrS2 monolayer. Based on analysis edge alignment, confirm possesses photocatalytic activities can be used in water splitting applications. While strain engineering plays important...
We theoretically study the magneto-optical transport properties of monolayer molybdenum disulfide (${\mathrm{MoS}}_{2}$) on polar substrates in presence a perpendicular magnetic field. The absorption coefficient (MOAC) is investigated as function incident photon energy when carriers are scattered by three different types phonons: intrinsic ${\mathrm{MoS}}_{2}$ acoustic, optical phonons, and surface (SO) phonons induced substrates. Among considered, largest magnitude MOAC full-width at half...
We study the optical transport properties of monolayer transition metal dichalcogenides (TMDCs) such as ${\mathrm{MoS}}_{2}$, ${\mathrm{WS}}_{2}$, ${\mathrm{MoSe}}_{2}$, and ${\mathrm{WSe}}_{2}$ in presence a magnetic field. The TMDCs band structures are obtained discussed by using effective massive Dirac model, which spin valley Zeeman effects well an external electric field included. magneto-optical absorption coefficient (MOAC) is derived function absorbed photon energy when carriers...
In this paper, detailed investigations of the electronic and optical properties a Janus SnSSe monolayer under biaxial strain electric field using <italic>ab initio</italic> methods are presented.
Van der Waals heterostructures, created by putting graphene on other two-dimensional semiconducting materials, have become an effective strategy to enhance the physical properties and extend possible applications of (2D) materials. Motivated successful synthesis a graphene/${\mathrm{PbI}}_{2}$ heterostructure in recent experiment [Nat. Commun. 11, 823 (2020)], here we use first-principles calculations construct investigate electronic interface characteristics heterostructure. We find that...
Combining van der Waals heterostructures by stacking different two-dimensional materials on top of each other layer-by-layer can enhance their desired properties and greatly extend the applications parent materials.
A van der Waals (VDW) heterostructure offers an effective strategy to create designer physical properties in vertically stacked two-dimensional (2D) materials, and a new paradigm designing novel 2D devices. In this work, we investigate the structural electronic features of BP/MoGe2N4 heterostructure. We show that exists multiple structurally stable stacking configuration, thus revealing experimental feasibility fabricating such heterostructures. Electronically, is direct band gap...
Two-dimensional Janus structures with vertical intrinsic electric fields exhibit many interesting physical properties that are not possible symmetric materials. We systematically investigate the structural, electronic, and transport of quintuple-layer atomic ${\mathrm{Ga}}_{2}\mathrm{S}{X}_{2}$ ($X=$ O, S, Se, Te) monolayers using first-principles calculations. The stability is evaluated via analysis their phonon dispersion curves, cohesive formation energies, elastic constants. existence a...
In this Letter, we design Janus γ-Sn2XY (X/Y= S, Se, Te) monolayers and predict their piezoelectricity carrier mobility by using first-principles simulations. are found to be indirect semiconducting characteristics with a camel's back-like dispersion in the top valence band. We discovered that piezoelectric high out-of-plane coefficients. Our calculated results for demonstrate coefficient d31 of γ-Sn2STe is 1.02 pm/V, larger than other 2D structures. Moreover, our calculations transport...
Abstract This work is motivated by the recent fabrication of a new four-atom-thick hexagonal polymorph from group IV monochalcogenide, so-called γ -GeSe (Lee et al 2021 Nano Lett. 21 4305). In this paper, we propose and examine structural characteristics, electronic properties, carrier mobility monolayers Janus -Ge 2 XY ( <?CDATA $X/Y = $?> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi>X</mml:mi> <mml:mrow> <mml:mo>/</mml:mo> </mml:mrow>...
The emergence of van der Waals (vdW) heterostructures, which consist vertically stacked two-dimensional (2D) materials held together by weak vdW interactions, has introduced an innovative avenue for tailoring nanoelectronic devices.
In this paper, we study the structural and electronic properties of graphene adsorbed on MoS2 monolayer (G/MoS2) with different stacking configurations using dispersion-corrected density functional theory. Our calculations show that interaction between is a weak van der Waals in all four binding energy per carbon atom −30 meV. presence monolayer, linear bands Dirac cone at interfaces are slightly split. A band gap about 3 meV opens G/MoS2 due to breaking sublattice symmetry by intrinsic...
In this paper, we design and predict the structural, electronic, transport, optical properties of two-dimensional Janus $\mathrm{GaIn}X\mathrm{O}$ ($X=\mathrm{S}$, Se, Te) monolayers by using first-principles calculations. The stability all six possible configurations was examined through analysis their phonon spectra. It is found that, except for OGaInTe monolayer, other are dynamically stable. Further, mechanical has been also investigated via calculations elastic constants. Depending on...