Two-dimensional MoSe2/graphene heterostructure thin film with wafer-scale continuity via van der Waals epitaxy

Dai, Tianjun; Chen, Yuqing; Zhou, Zhang‐Yu; Sun, Jian; Xiao-shan, Peng; Liu, Xingzhao

doi:10.1016/j.cplett.2020.137762

Cited by 4 publications

(4 citation statements)

References 29 publications

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“…At present, some progress has been made in the preparation strategy and exploration of the physical properties of vdWHs of vdW materials. Many methods have been designed to prepare vdWHs, such as chemical vapor deposition growth (CVD), 103,104 physical vapor deposition/transport growth (PVD), 105,106 mechanical exfoliation and directional transfer. 107,108 For electronics, optoelectronic devices and other applications, high-quality plates are required.…”

Section: The Design Of Vdwhsmentioning

confidence: 99%

Recent progress on van der Waals heterojunctions applied in photocatalysis

et al. 2022

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Section: The Design Of Vdwhsmentioning

confidence: 99%

Recent progress on van der Waals heterojunctions applied in photocatalysis

et al. 2022

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“…Presently, the dry transfer method [11], wet transfer method [12], physical vapor deposition (PVD) [13], chemical vapor deposition (CVD) [14], spray-coating process [15], and hydrothermal method [16] are usually used to construct vdWHs. The dry transfer and wet transfer methods were employed for the layer-by-layer transfer of 2DLMs in air and liquid to achieve vdWH stacking.…”

Section: Introductionmentioning

confidence: 99%

“…Both the dry transfer and wet transfer methods require the 2DLMs to be transferred and stacked layer by layer, resulting in extremely low preparation efficiency [17]. Dai et al [13] successfully constructed single-layer vdWH MoSe 2 /graphene using PVD to deposit MoSe 2 directly evaporated on the graphene surface at 650 • C. For the PVD method, MoSe 2 layers tend to raise the wrinkles and cracks at high temperatures. Han et al [18] used CVD to deposit MoS 2 on an h-BN substrate at 1050 • C to construct a single-layer vdWH MoS 2 /h-BN.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Tribological Performance of Multi-Layer van der Waals Heterostructure WS2/h-BN

Fang,

Sun,

Shang

et al. 2024

Lubricants

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Van der Waals heterostructures with incommensurate contact interfaces show excellent tribological performance, which provides solutions for the development of new solid lubricants. In this paper, a facile electrostatic layer-by-layer self-assembly (LBL) technique was proposed to prepare multi-layer van der Waals heterostructures tungsten disulfide/hexagonal boron nitride (vdWH WS2/h-BN). The h-BN and WS2 were modified with poly (diallyldimethylammonium chloride) (PDDA) and sodium dodecyl benzene sulfonate (SDBS) to obtain the positively charged PDDA@h-BN and the negatively charged SDBS@WS2, respectively. When the mass ratio of PDDA to h-BN and SDBS to WS2 were both 1:1 and the pH was 3, the zeta potential of PDDA@h-BN and SDBS@WS2 were 60.0 mV and −50.1 mV, respectively. Under the electrostatic interaction, the PDDA@h-BN and SDBS@WS2 attracted each other and stacked alternately along the (002) crystal plane forming the multi-layer (four-layer) vdWH WS2/h-BN. The addition of the multi-layer vdWH WS2/h-BN (1.0 wt%) to the base oil resulted in a significant reduction of 33.8% in the friction coefficient (0.104) and 16.8% in the wear rate (4.43 × 10−5 mm3/(N·m)). The excellent tribological property of the multi-layer vdWH WS2/h-BN arose from the lattice mismatch (26.0%), a 15-fold higher interlayer slip possibility, and the formation of transfer film at the contact interface. This study provided an easily accessible method for the multi-layer vdWH with excellent tribological properties.

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“…vdWHs with different interfacial morphologies exhibit different physical and chemical properties. − Therefore, developing reliable assembly methods for vdWHs is a necessary prerequisite to relevant physical exploration and practical applications. A brief comparison of the current pathways for stacking vdWHs in terms of quality, controllability, efficiency, versatility, and applicability scenarios is given in Figure S1b. − The experimental methods described above can control the growth by adjusting different experimental parameters. Previous hydrothermal studies have systematically investigated strong interlayer coupling and in-plane defect engineering in nanostructures by controlling reaction temperature and precursor concentration. , Magnetron sputtering technology makes it easy to obtain high-quality films in practical applications.…”

Section: Introductionmentioning

confidence: 99%

Visualizing Orientation Controlled Interface and Interlayer Electron/Exciton–Phonon Coupling in the MoS₂/MoTe₂ Nanoheterostructure for Photoelectric Conversion

Li,

Shi,

Cao

et al. 2023

ACS Appl. Nano Mater.

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Semiconducting 2D layered transition metal dichalcogenides (TMDs) and TMD heterostructures have attracted much attention in porous materials because of their unique electrical and optical properties. However, the role of controlled epitaxial growth and strain in the interfacial electron transfer and nonlinear optical (NLO) conversion efficiency of the TMD/ TMD nanoheterostructure remains poorly understood. Herein, we have successfully synthesized a MoS 2 /MoTe 2 nanoheterostructure with excellent photoelectric and NLO properties. The designed MoS 2 /MoTe 2 nanoheterostructure exhibits excellent NLO performance, including a high nonlinear absorption (NLA) coefficient of 10 −7 cm/W at the pulse energy of 5 μJ, which is attributed to the enhanced light absorption capacity of MoTe 2 and the modulation of interlayer carrier diffusion. Based on the synergistic effects of optimization strain and interface engineering, an in-depth analysis was conducted on the effects of surface modification on the photoelectrochemical (PEC) performance optimization of the MoS 2 /MoTe 2 nanoheterostructure. The synergistic effect of strain and the interface can promote the continuous transfer of electrons between MoTe 2 and MoS 2 . This work studied the visualization control interface and interlayer electron/exciton phonon coupling in van der Waals MoS 2 /MoTe 2 , providing some inspiration for achieving good NLO conversion efficiency and efficient PEC anode materials.

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Two-dimensional MoSe2/graphene heterostructure thin film with wafer-scale continuity via van der Waals epitaxy

Cited by 4 publications

References 29 publications

Recent progress on van der Waals heterojunctions applied in photocatalysis

Recent progress on van der Waals heterojunctions applied in photocatalysis

Preparation and Tribological Performance of Multi-Layer van der Waals Heterostructure WS2/h-BN

Visualizing Orientation Controlled Interface and Interlayer Electron/Exciton–Phonon Coupling in the MoS₂/MoTe₂ Nanoheterostructure for Photoelectric Conversion

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Two-dimensional MoSe2/graphene heterostructure thin film with wafer-scale continuity via van der Waals epitaxy

Cited by 4 publications

References 29 publications

Recent progress on van der Waals heterojunctions applied in photocatalysis

Recent progress on van der Waals heterojunctions applied in photocatalysis

Preparation and Tribological Performance of Multi-Layer van der Waals Heterostructure WS2/h-BN

Visualizing Orientation Controlled Interface and Interlayer Electron/Exciton–Phonon Coupling in the MoS2/MoTe2 Nanoheterostructure for Photoelectric Conversion

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Product

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Visualizing Orientation Controlled Interface and Interlayer Electron/Exciton–Phonon Coupling in the MoS₂/MoTe₂ Nanoheterostructure for Photoelectric Conversion