How does the electric current propagate through fully-hydrogenated borophene?

An, Yipeng; Jiao, Jutao; Hou, Yusheng; Wang, Hui; Wu, Dapeng; Wang, Tianxing; Fu, Zhaoming; Xu, Guoliang; Wu, Ruqian

doi:10.1039/c8cp04272a

Cited by 33 publications

(19 citation statements)

References 24 publications

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“…Most of the borophene sheets are metallic with remarkable anisotropy behaviors . They are proposed to be good electric conductors, even better than graphene according to theoretical calculations. Dirac cones are predicted to exist in β 12 , χ 3 and fully hydrogenated δ 6 borophene (borophane) sheets.…”

Section: Introductionmentioning

confidence: 99%

2D Boron Sheets: Structure, Growth, and Electronic and Thermal Transport Properties

Gao

Cheng

et al. 2019

Adv Funct Materials

152

101

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The structures of boron clusters, such as flat clusters and fullerenes, resemble those of carbon. Various two‐dimensional (2D) borophenes have been proposed since the production of graphene. The recent successful fabrication of borophene sheets has prompted extensive researches, and some unique properties are revealed. In this review, the recent theoretical and experimental progress on the structure, growth, and electronic and thermal transport properties of borophene sheets is summarized. The history of prediction of boron sheet structures is introduced. Existing with a mixture of triangle lattice and hexagonal lattice, the structures of boron sheets have peculiar characteristics of polymorphism and show significant dependence on the substrate. Due to the unique structure and complex BB bonds, borophene sheets have many interesting electronic and thermal transport properties, such as strong nonlinear effect, strong thermal transport anisotropy, high thermal conductance in the ballistic transport and low thermal conductivity in the diffusive transport. The growth mechanism and synthesis of borophene sheets on different metal substrates are also presented. The successful prediction and synthesis will shed light on the exploration of new novel materials. Besides, the outstanding and peculiar properties of borophene make them tempting platform for exploring novel physical phenomena and extensive applications.

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Section: Introductionmentioning

confidence: 99%

2D Boron Sheets: Structure, Growth, and Electronic and Thermal Transport Properties

Gao

Cheng

et al. 2019

Adv Funct Materials

152

101

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“…After the discovery of the well-known graphene, [1] a large number of two-dimensional (2D) monolayers (MLs) have been fabricated and studied, including silicene, [2,3] h-BN, [4] transition metal sulfides, [5][6][7][8][9][10] phosphorene, [11][12][13][14][15] MXene, [16,17] borophene, [18][19][20][21][22][23] stanene, [24] antimonene, [25] g-C3N4, [26,27] ferromagnets, [28,29] chromium trihalides CrX3, [30][31][32][33] and other graphene-like MLs. [34][35][36][37] Each type of these 2D materials possesses unique properties in mechanics, thermodynamics, optics, electrics, and magnetism.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Lateral Transition‐Metal Disulfides Heterojunctions

Hou

Wang

et al. 2020

Adv Funct Materials

Self Cite

102

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The intrinsic spin-dependent transport properties of two types of lateral VS2|MoS2 heterojunctions are systematically investigated using first-principles calculations, and their various nanodevices with novel properties are designed. The lateral VS2|MoS2 heterojunction diodes show a perfect rectifying effect and are promising for the applications of Schottky diodes. A large spin-polarization ratio is observed for the A-type device and pure spin-mediated current is then realized. The gate voltage significantly tunes the current and rectification ratio of their field-effect transistors (FETs). In addition, they all have sensitive photoresponse to blue light, and could be used as photodetector and photovoltaic device. Moreover, they generate the effective thermally-driven current when a temperature gratitude appears between the two terminals, suggesting them as potential thermoelectric materials.Hence, the lateral VS2|MoS2 heterojunctions show a multifunctional nature and have various potential applications in spintronics, optoelectronics, and spin caloritronics.

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“…The contour lines are drawn at 0.05 eV intervals in both electron (solid-navy) and hole-doped cases (dashedgreen).We demonstrate the band dispersion of borophane (Eq.2) in Fig. 2, where we have compared our used model Hamiltonian (Eq.1) with that calculations, based on the density functional theory and non-equilibrium Green's function approaches [35], the so-called NEGF-DFT method.…”

Section: Model Hamiltonian Of Borophenementioning

confidence: 92%

“…An et al using first-principles density functional theory plus the non-equilibrium Green's function approach, demonstrated that borophane displays a huge electrical and mechanical anisotropy. Along the valley-parallel direction (armchair), the 2D borophane exhibits a metallic treatment with a linear current-voltage curve, in contrast to the perpendicular buckled direction (zigzag), that shows off a semiconductor behavior [35].…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric transport properties of borophane

Zare

2019

Phys. Rev. B

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We theoretically study the influence of impurity scattering on the electric and thermal transport of borophane layer, a two-dimensional anisotropic Dirac semi-metal with two tilted and anisotropic Dirac cones. In a systematic framework, we have calculated exactly the electrical conductivity and thermoelectric coefficients of borophane in the presence of the short-range, long-range charged impurity and the short-range electro-magnetic (SREM) scatterers, by using the exact solution of the Boltzmann transport equation within the linear-response theory. Contrary to the large electron-hole asymmetry in borophane, its electron-hole conductivity is nearly symmetric. Interestingly, for the short-range scatters, just like graphene, the short-range conductivities of borophane have the constant values, independent of the chemical potential, while the conductivities of the SREM scatterers are linearly dependent on the chemical potential. Regardless of the impurity type, the electric conductivity of borophane is highly anisotropic, while the Seebeck coefficient and figure of merit (ZT ) are isotropic. Along with the ambipolar nature of the borophane thermopower, a very high value of ZT around unity is obtained at room temperature, due to the large asymmetry between electrons and holes in borophane. More importantly, borophane attains its maximum value of ZT at very low chemical potentials, in the vicinity of the charge neutrality point. In comparison to phosphorene, a highly unique anisotropic 2D material, borophane with a higher anisotropy ratio (σxx/σyy ∼ 10), is an unprecedented anisotropic material. This high anisotropy ratio together with the large figure of merit, suggest that borophane is promising for the thermoelectric applications and transport switching in the Dirac transport channels. arXiv:1811.09915v2 [cond-mat.mes-hall]

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How does the electric current propagate through fully-hydrogenated borophene?

Cited by 33 publications

References 24 publications

2D Boron Sheets: Structure, Growth, and Electronic and Thermal Transport Properties

2D Boron Sheets: Structure, Growth, and Electronic and Thermal Transport Properties

Multifunctional Lateral Transition‐Metal Disulfides Heterojunctions

Thermoelectric transport properties of borophane

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