Temperature effect on structural, morphological and optical properties of 2D-MoS2 layers: An experimental and theoretical study

Jlidi, Zaineb; Baachaoui, Sabrine; Raouafi, Noureddine; Ridene, Saïd

doi:10.1016/j.ijleo.2020.166166

Cited by 19 publications

(4 citation statements)

References 39 publications

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“…The crystal structure of synthesized MoO 3 /Ni-F electrode material is studied by XRD analysis with 2θ ranging from 11-55°with Cu Ka radiation (λ = 1.5418 Å). The values of structural parameters like crystallite size (C.S), dislocation density (δ), strain (ε), d-spacing, and lattice parameters (L. P: a, b & c) are calculated by following relations [30][31][32][33][34][35][36][37][38]: Figure 2(B) exhibits the Raman spectra of nanostructured α-MoO 3 /Ni-F electrode material. The Raman bands related to α-MoO 3 /Ni-F are appeared at 285, 335, 380, 460, 671, 819, 992 cm −1 .…”

Section: Structural and Raman Analysismentioning

confidence: 99%

Chemical vapor deposition-based synthesis of binder-free nanostructure α-MoO₃ electrode material for PES devices

Raza,

Ali,

Ayub

et al. 2024

Phys. Scr.

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Molybdenum-based metal oxides have succeeded in incredible consideration for supercapacitor applications due to their outstanding structural, morphological and electrochemical properties. Herein, a highly porous orthorhombic MoO3 (α-MoO3) nanobenzene like nanosheets are synthesized on nickel foam (Ni-F) via a simple and cost-effective chemical vapor deposition (CVD) technique. The x-ray diffraction (XRD) analysis confirmed the synthesis of nanostructured α-MoO3 having multi oriented diffraction planes. The surface morphology (SEM) analysis indicated that the entwined nanobenzene through nano-rods/particles is beneficial for good electrical conductivity hence the high electrochemical performance of synthesized α-MoO3. The electrochemical properties of synthesized α-MoO3 electrode material like cyclic voltammetry (CV), galvanostatic charging-discharging (GCD) and electrochemical impedance spectroscopy (EIS) are analyzed using a three-electrode electrochemical workstation in 2 M KOH electrolyte solution. The synthesized α-MoO3 pseudocapacitor presented a maximum specific capacitance of 3206 F/g at a current density of 1 A/g. Moreover, α-MoO3 exhibits a cyclic stability of about 99.95% after 3000 cycles, high energy density (111 Wh/kg), power density (2500 W/kg) and negligible charge transfer resistance (0.6 ohms), indicating that it can serve as an excellent electrode material for supercapacitors. The Power law and Dunn’s model simulations also confirmed that the excellent electrochemical performance of synthesized α-MoO3 electrode material is contributed by capacitive as well as diffusion-controlled behavior.

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Section: Structural and Raman Analysismentioning

confidence: 99%

Chemical vapor deposition-based synthesis of binder-free nanostructure α-MoO₃ electrode material for PES devices

Raza,

Ali,

Ayub

et al. 2024

Phys. Scr.

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“…Quasi-2D electron/hole gases in van der Waals nanostructures have been considered as one of the fundamental elements in the semiconductor nanostructures. Recently, MoS 2 /WSe 2 van der Waals nanostructures have attracted a great deal of interest due to their exceptional optical and electronic properties [1][2][3][4]. One of the particularities of MoS 2 and WSe 2 from other materials is the possibility to re-stack these two semiconductors in the vertical growth direction to produce van der Waals nanostructures without the necessity of lattice matching [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Coupling and interface effects in MoS₂/WSe₂ van der Waals nanostructure

Mastour,

Jemaï,

Ridene

2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

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In this work we report the effects of the interface coupling, the effective mass, the Hartree and exchange–correlation potential on the total energy in quasi-2D MoS2/WSe2 van der Waals nanostructure. Analytical and numerical solutions of the total energy as a function of carrier density and effective mass are determined without self-consistent calculation. The calculation carefully indicates how the quasi-2D electron gas arises from the interface coupling between MoS2 and WSe2 layers. Moreover, the results showed that the width of the wave function and the length scale between the two materials’ interface decrease with increasing electron density while the corresponding ground state quantisation energy in the z-direction increases considerably. Furthermore, in MoS2 layer with density n s = 4 × 1012 cm−2 this additional separation is approximately 2 nm and 〈z〉 = 1 nm. Due to the disparity in effective mass of electrons and holes in MoS2, the majority of the excess energy is absorbed as kinetic energy by electrons. The comparison with available experimental and DFT calculation indicates that the present work reproduces properly known results for MoS2/WSe2 interface.

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“…The realization of advanced technology depends on the development of energy [4]. The development of rechargeable batteries has revolutionized the way we store and use energy [5][6][7]. With the increasing demand for portable electronics, electric vehicles, and renewable energy sources, there is a growing need for highperformance, cost-effective, and eco-friendly energy storage systems [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

In-situ characterization of MnO2-based zinc-ion batteries: understanding the role of by-products in impedance increase

Bao,

Pan

2023

J. Phys.: Conf. Ser.

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Temperature effect on structural, morphological and optical properties of 2D-MoS2 layers: An experimental and theoretical study

Cited by 19 publications

References 39 publications

Chemical vapor deposition-based synthesis of binder-free nanostructure α-MoO₃ electrode material for PES devices

Chemical vapor deposition-based synthesis of binder-free nanostructure α-MoO₃ electrode material for PES devices

Coupling and interface effects in MoS₂/WSe₂ van der Waals nanostructure

In-situ characterization of MnO2-based zinc-ion batteries: understanding the role of by-products in impedance increase

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Temperature effect on structural, morphological and optical properties of 2D-MoS2 layers: An experimental and theoretical study

Cited by 19 publications

References 39 publications

Chemical vapor deposition-based synthesis of binder-free nanostructure α-MoO3 electrode material for PES devices

Chemical vapor deposition-based synthesis of binder-free nanostructure α-MoO3 electrode material for PES devices

Coupling and interface effects in MoS2/WSe2 van der Waals nanostructure

In-situ characterization of MnO2-based zinc-ion batteries: understanding the role of by-products in impedance increase

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Product

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Chemical vapor deposition-based synthesis of binder-free nanostructure α-MoO₃ electrode material for PES devices

Chemical vapor deposition-based synthesis of binder-free nanostructure α-MoO₃ electrode material for PES devices

Coupling and interface effects in MoS₂/WSe₂ van der Waals nanostructure