Large-area high-quality 2D ultrathin Mo2C superconducting crystals

Xu, Chuan; Wang, Yunlong; Liu, Zhibo; Chen, Long; Guo, Jingkun; Kang, Ning; Ma, Xiang; Cheng, Hui‐Ming; Ren, Wencai

doi:10.1038/nmat4374

Cited by 1,188 publications

(903 citation statements)

References 29 publications

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“…In fact, experiments have observed that MXenes can be formed in the conical scrolls [7], and demonstrated that MXenes can be used as filler in polymer composites [28]. Moreover, the chemical vapor deposition technique can be employed to synthesize MXenes [15]. On the other hand, there have been several theoretical studies on nanoribbon, nanotube, and heterostructure MXenes.…”

Section: Nanoribbon Nanotube and Heterostructure Mxenesmentioning

confidence: 99%

Electronic properties and applications of MXenes: a theoretical review

et al. 2017

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Recent chemical exfoliation of layered MAX phase compounds to novel two-dimensional transition metal carbides and nitrides, so called MXenes, has brought new opportunity to materials science and technology. This review highlights the computational attempts that have been made to understand the physics and chemistry of this very promising family of advanced two-dimensional materials, and to exploit their novel and exceptional properties for electronic and energy harvesting applications.

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Section: Nanoribbon Nanotube and Heterostructure Mxenesmentioning

confidence: 99%

Electronic properties and applications of MXenes: a theoretical review

et al. 2017

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“…However, the acclaimed 2D forms remain unattainable and almost unexplored to date, which is in stark contrast to semimetallic graphene 17,18 and their dichalcogenide analogues such as monolayer MoS2 19,20 , MoTe2 21,22 , and ReS2 23,24 . This is mainly attributed to the hysteretic research developments in the batch production of high-quality, large-domain-size MTMDC nanosheets 14,25 , and of paramount importance, with sub-10 nm thickness that approaches the 2D regime 26,27 .…”

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Metallic Vanadium Disulfide Nanosheets as a Platform Material for Multifunctional Electrode Applications

et al. 2017

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Nanothick metallic transition metal dichalcogenides such as VS2 are essential building blocks for constructing next-generation electronic and energy-storage applications, as well as for exploring unique physical issues associated with the dimensionality effect. However, such two-dimensional (2D) layered materials have yet to be achieved through either mechanical exfoliation or bottom-up synthesis. Herein, we report a facile chemical vapor deposition route for direct production of crystalline VS2 nanosheets with sub-10 nm thicknesses and domain sizes of tens of micrometers. The obtained nanosheets feature spontaneous superlattice periodicities and excellent electrical conductivities (∼3 × 103 S cm–1), which has enabled a variety of applications such as contact electrodes for monolayer MoS2 with contact resistances of ∼1/4 to that of Ni/Au metals, and as supercapacitor electrodes in aqueous electrolytes showing specific capacitances as high as 8.6 × 102 F g–1. This work provides fresh insights into the delicate structure–property relationship and the broad application prospects of such metallic 2D materials.

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“…Our In recent years, 2D materials have aroused great interest as potential building blocks for a variety of fundamental optoelectronic components. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] To date, various 2D materials have been synthesized, including well-known graphene, 15 transition metal dichalcogenides, 16 antimonene, 17 black phosphorus, 18 Mo 2 C, 19 BN, 20 and so on, but some of which face very challenging in various optical and electronic applications due to zero-bandgap, low conductivity, or severe instability in air. In order to address this problem, it is urgent to develop a new material with a good stability and high conductivity.…”

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confidence: 99%

Ultrathin MoO2 nanosheets with good thermal stability and high conductivity

Liu

Ren

et al. 2017

AIP Advances

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Exploration and development of new two-dimensional (2D) materials with good stability and remarkable physical properties have become the research hotspots. We report for the first time the monodispersity of ultrathin MoO2 nanosheets have been synthesized through an improved chemical vapor deposition (CVD) method using only molybdenum trioxide as precursor. The grown MoO2 nanosheets have an average thickness of ∼ 5 to 10 nm and exhibit good crystal-quality. Temperature-dependent Raman spectra show that the ultrathin MoO2 nanosheets have high thermal stability up to 503 K. In addition, the first order temperature coefficients of the MoO2 characteristic Raman modes O1–Mo and O2–Mo were firstly found to be -1.91×10-2 and -3.94×10-2 cm−1/K, respectively. Two-probe electrical measurements show that the as-fabricated ultrathin MoO2 nanosheets devices preserve a high electrical conductivity in ambient conditions, reaching up to 200 - 475 S/cm. The exceptionally high conductivity of individual MoO2 nanosheet is ascribed to the unique crystal structure. Our results demonstrate that the ultrathin MoO2 nanosheets show great potential applications in constructing new integrated electronic devices and systems.

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Large-area high-quality 2D ultrathin Mo2C superconducting crystals

Cited by 1,188 publications

References 29 publications

Electronic properties and applications of MXenes: a theoretical review

Electronic properties and applications of MXenes: a theoretical review

Metallic Vanadium Disulfide Nanosheets as a Platform Material for Multifunctional Electrode Applications

Ultrathin MoO2 nanosheets with good thermal stability and high conductivity

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