Temperature-Dependent Thermal Properties of Supported MoS<sub>2</sub> Monolayers

Taube, Andrzej; Judek, Jarosław; Łapińska, Anna; Zdrojek, Mariusz

doi:10.1021/acsami.5b00690

Cited by 192 publications

(194 citation statements)

References 28 publications

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“…10,11 In terms of nanostructures, carbon nanotube has a thermal conductivity higher than 3000 W/Km, 12,13 which is the highest among all the one-dimensional materials. In the family of 2D materials, graphene possesses the highest reported thermal conductivity at room temperature, [14][15][16][17][18] which is 2-3 orders higher than that of other 2D materials, such as MoS 2 [19][20][21][22][23][24][25] and phosphorene. [26][27][28][29][30][31] The underlying reasons for the highest thermal conductivity of carbon-based materials are mainly due to their light atomic mass, short bond length, and strong covalent bonds between carbon atoms.…”

Section: Introductionmentioning

confidence: 99%

Superior lattice thermal conductance of single-layer borophene

et al. 2017

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By way of the non-equilibrium Green's function simulations and first-principles calculations, we report that borophene, a single layer of boron atoms that was fabricated recently, possesses an extraordinarily high lattice thermal conductance in the ballistic transport regime, which even exceeds graphene. In addition to the obvious reasons of light mass and strong bonding of boron atoms, the superior thermal conductance is mainly rooted in its strong structural anisotropy and unusual phonon transmission. For low-frequency phonons, the phonon transmission within borophene is nearly isotropic, similar to that of graphene. For highfrequency phonons, however, the transmission is one-dimensional, that is, all the phonons travel in one direction, giving rise to its ultra-high thermal conductance. The present study suggests that borophene is promising for applications in efficient heat dissipation and thermal management, and also an ideal material for revealing fundamentals of dimensionality effect on phonon transport in ballistic regime.

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Section: Introductionmentioning

confidence: 99%

Superior lattice thermal conductance of single-layer borophene

et al. 2017

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“…Although such measurements further our understanding of phonon interactions within the 2D system, they are of limited relevance to realistic device applications for which the supported configuration is more practical. The thermal properties of this supported configuration are still not well studied, and there are only few works reported on graphene36373839 and MoS 2 4041 on various bulk substrates. TMDC flakes situated on another 2D material such as h -BN being the substrate, i.e., two 2D-material interface/heterostructure, is far less investigated, which is in great demand in the emerging heterostructures and optoelectronic devices involving stacked 2D materials.…”

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confidence: 99%

“…For MoS 2 , Taube et al . measured the total G across MoS 2 /Si including a thin SiO 2 layer to be 1.94 MW/m 2 K41, and Zhang et al . measured G to be 0.44 MW/m 2 K for MoS 2 /Au40.…”

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confidence: 99%

Thermal Conductance of the 2D MoS2/h-BN and graphene/h-BN Interfaces

Liu

Ong

et al. 2017

Sci Rep

105

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Two-dimensional (2D) materials and their corresponding van der Waals heterostructures have drawn tremendous interest due to their extraordinary electrical and optoelectronic properties. Insulating 2D hexagonal boron nitride (h-BN) with an atomically smooth surface has been widely used as a passivation layer to improve carrier transport for other 2D materials, especially for Transition Metal Dichalcogenides (TMDCs). However, heat flow at the interface between TMDCs and h-BN, which will play an important role in thermal management of various electronic and optoelectronic devices, is not yet understood. In this paper, for the first time, the interface thermal conductance (G) at the MoS2/h-BN interface is measured by Raman spectroscopy, and the room-temperature value is (17.0 ± 0.4) MW · m−2K−1. For comparison, G between graphene and h-BN is also measured, with a value of (52.2 ± 2.1) MW · m−2K−1. Non-equilibrium Green’s function (NEGF) calculations, from which the phonon transmission spectrum can be obtained, show that the lower G at the MoS2/h-BN interface is due to the weaker cross-plane transmission of phonon modes compared to graphene/h-BN. This study demonstrates that the MoS2/h-BN interface limits cross-plane heat dissipation, and thereby could impact the design and applications of 2D devices while considering critical thermal management.

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“…These results directly clarify the low-dimensional effect in layered TMDCs, opening up a route for high-performance thermoelectric applications. at room temperature [42][43][44][45]. However, we consider that the κ of polycrystalline monolayers is smaller than that of single-crystalline monolayers because of the effects from domain/grain boundaries, and we would rather use the κ of large-area bulk samples.…”

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confidence: 99%

Enhanced thermoelectric power in two-dimensional transition metal dichalcogenide monolayers

Kanahashi

Cuong

et al. 2016

Phys. Rev. B

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The carrier-density-dependent conductance and thermoelectric properties of large-area MoS 2 and WSe 2 monolayers are simultaneously investigated using the electrolyte gating method. The sign of the thermoelectric power changes across the transistor off-state in the ambipolar WSe 2 transistor as the majority carrier density switches from electron to hole. The thermopower and thermoelectric power factor of monolayer samples are one order of magnitude larger than that of bulk materials, and their carrier-density dependences exhibit a quantitative agreement with the semiclassical Mott relation based on the two-dimensional energy band structure, concluding the thermoelectric properties are enhanced by the low-dimensional effect.

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Temperature-Dependent Thermal Properties of Supported MoS₂ Monolayers

Cited by 192 publications

References 28 publications

Superior lattice thermal conductance of single-layer borophene

Superior lattice thermal conductance of single-layer borophene

Thermal Conductance of the 2D MoS2/h-BN and graphene/h-BN Interfaces

Enhanced thermoelectric power in two-dimensional transition metal dichalcogenide monolayers

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Temperature-Dependent Thermal Properties of Supported MoS2 Monolayers

Cited by 192 publications

References 28 publications

Superior lattice thermal conductance of single-layer borophene

Superior lattice thermal conductance of single-layer borophene

Thermal Conductance of the 2D MoS2/h-BN and graphene/h-BN Interfaces

Enhanced thermoelectric power in two-dimensional transition metal dichalcogenide monolayers

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Temperature-Dependent Thermal Properties of Supported MoS₂ Monolayers