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Mechanical deformations, either spontaneously occurring during sample preparation or purposely induced in their nanoscale manipulation, drastically affect the electronic and optical properties of transition metal dichalcogenide monolayers.…

Materials Science · Physics 2024-02-16 Stefan Velja , Jannis Krumland , Caterina Cocchi

Defects usually play an important role in tuning and modifying various properties of semiconducting or insulating materials. Therefore we study the impact of point and line defects on the electronic structure and optical properties of MoS2…

Mesoscale and Nanoscale Physics · Physics 2017-04-26 Jens Kunstmann , Tsegabirhan B. Wendumu , Gotthard Seifert

Low-dimensional (LD) transition metal dichalcogenides (TMDs) in the form of nanoflakes, which consist of one or several layers, are the subject of intensive fundamental and applied research. Due to the size-induced transition from a bulk to…

We calculate from first principles the electronic structure and optical properties of a number of transition metal dichalcogenide (TMD) bilayer heterostructures consisting of MoS2 layers sandwiched with WS2, MoSe2, MoTe2, BN, or graphene…

Mesoscale and Nanoscale Physics · Physics 2013-09-12 Hannu-Pekka Komsa , Arkady V. Krasheninnikov

Two-dimensional (2D) semiconducting transition metal dichalcogenides (TMDs) can withstand a large deformation without fracture or inelastic relaxation, making them attractive for application in novel strain-engineered and flexible…

Materials Science · Physics 2016-01-18 Junwen Li , Nikhil V. Medhekar , Vivek B. Shenoy

We have performed a comprehensive first-principles study of the electronic and magnetic properties of two-dimensional (2D) transition-metal dichalcogenide (TMD) heterobilayers MX2/MoS2 (M = Mo, Cr, W, Fe, V; X = S, Se). For M = Mo, Cr, W;…

Mesoscale and Nanoscale Physics · Physics 2014-03-05 Ning Lu , Hongyan Guo , Lei Li , Jun Dai , Lu Wang , Wai-Ning Mei , Xiaojun Wu , Xiao Cheng Zeng

Layered transition metal dichalcogenides (TMDs) offer many attractive features for next-generation low-dimensional device geometries. Due to the practical and fabrication challenges related to in situ methods, the atomistic dynamics that…

Molybdenum disulfide (MoS$_2$) has attracted interest owing to its strain-tuned electronic and optical properties, making it a promising candidate for applications in strain engineering devices. In this study, we investigate the effect of…

Materials Science · Physics 2024-01-26 A. Setiawan , I. P. Handayani , E. Suprayoga

Transition metal dichalcogenide (TMD) monolayers attract great attention due to their specific structural, electronic and mechanical properties. The formation of their lateral heterostructures allows a new degree of flexibility in…

Materials Science · Physics 2020-09-29 Sadegh Imani Yengejeh , William Wen , Yun Wang

The transition-metal dichalcogenides (TMD) MoS2 and WS2 show remarkable electromechanical properties. Strain modifies the direct band gap into an indirect one, and substantial strain even induces an semiconductor-metal transition. Providing…

Potential applications of monolayer of transition metal dichalcogenides (TMDs) in optoelectronic and flexible devices are under heavy investigation. Although TMDs monolayers are highly robust to external mechanical fields, their electronic…

Computational Physics · Physics 2021-09-14 Mohammad Bahmani , Michael Lorke , Mahdi Faghihnasiri , Thomas Frauenheim

Studying the atomic structure of intrinsic defects in two-dimensional transition metal dichalcogenides is difficult since they damage quickly under the intense electron irradiation in transmission electron microscopy (TEM). However, this…

Layered molecular materials and especially MoS2 are already accepted as promising candidates for nanoelectronics. In contrast to the bulk material, the observed electron mobility in single-layer MoS2 is unexpectedly low. Here we reveal the…

Materials Science · Physics 2013-05-30 Andrey N. Enyashin , Maya Bar-Sadan , Lothar Houben , Gotthard Seifert

The mechanical and electronic properties of transition metal dichalcogenide (TMD) monolayers corresponding to transition groups IV, VI, and X are explored under mechanical bending from first principles calculations using the strongly…

Materials Science · Physics 2019-07-19 Niraj K. Nepal , Liping Yu , Qimin Yan , Adrienn Ruzsinszky

In this work, we have presented a first principle simulation study on the electronic properties of MoS2/MX2/MoS2 (M=Mo or W; X=S or Se) trilayer heterostrcuture. We have investigated the effect of stacking configuration, bi-axial…

Computational Physics · Physics 2018-02-27 Kanak Datta , Quazi D. M. Khosru

Electronic and thermoelectric properties of a two-dimensional MoS2 monolayer containing atomic defects are investigated using density functional theory. All the atomic defects have been found to exhibit endothermic nature. Electronic…

Mesoscale and Nanoscale Physics · Physics 2019-05-17 Munish Sharma , Ashok Kumar , P. K. Ahluwalia

In the field of 2D materials, transition metal dichalcogenides (TMDs) are gaining attention for electronic applications. Our study delves into the H-phase monolayer VS$_2$ of the TMD family, analyzing its electronic structure and how strain…

Materials Science · Physics 2024-01-18 Oguzhan Orhan , Şener Özönder , Soner Ozgen

Defects can strongly influence the electronic, optical and mechanical properties of 2D materials, making defect stability under different thermodynamic conditions crucial for material-property engineering. In this paper, we present an…

Materials Science · Physics 2023-08-10 Alaa Akkoush , Yair Litman , Mariana Rossi

First-principle calculations with different exchange-correlation functionals, including LDA, PBE and vdW-DF functional in form of optB88-vdW, have been performed to investigate the electronic and elastic properties of two dimensional…

Materials Science · Physics 2015-08-31 Fan Zeng , Wei-Bing Zhang , Bi-Yu Tang

We present a computational study on the impact of line defects on the electronic properties of monolayer MoS2. Four different kinds of line defects with Mo and S as the bridging atoms, consistent with recent theoretical and experimental…

Materials Science · Physics 2015-02-13 Amretashis Sengupta , Dipankar Saha , Thomas A. Niehaus , Santanu Mahapatra
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