Results 241 to 250 of about 36,290 (265)

2D transition metal dichalcogenides

Nature Reviews Materials, 2017
Graphene is very popular because of its many fascinating properties, but its lack of an electronic bandgap has stimulated the search for 2D materials with semiconducting character. Transition metal dichalcogenides (TMDCs), which are semiconductors of the type MX2, where M is a transition metal atom (such as Mo or W) and X is a chalcogen atom (such as S,
Sajedeh Manzeli, Dmitry Ovchinnikov, Diego Pasquier, Oleg V. Yazyev, Andras Kis   +4 more
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Transition Metal Dichalcogenides

1977
Since the early 60’s a group of materials called the transition metal dichalcogenides have received a rapidly growing interest. Of the sixty compounds of this family, about two-thirds assume layer structures. These TCh2 compounds (Ch = S, Se or Te) form a structurally and chemically well-defined family.
R. M. A. Lieth, J. C. J. M. Terhell
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Aging of Transition Metal Dichalcogenide Monolayers

ACS Nano, 2016
Two-dimensional sheets of transition metal dichalcogenides are an emerging class of atomically thin semiconductors that are considered to be "air-stable", similar to graphene. Here we report that, contrary to current understanding, chemical vapor deposited transition metal dichalcogenide monolayers exhibit poor long-term stability in air.
Jian, Gao, Baichang, Li, Jiawei, Tan, Phil, Chow, Toh-Ming, Lu, Nikhil, Koratkar   +5 more
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Raman spectroscopy of transition metal dichalcogenides

Journal of Physics: Condensed Matter, 2016
Raman spectroscopy of transition metal dichalcogenides (TMDs) is reviewed based on our recent theoretical and experimental works. First, we discuss the semi-classical and quantum mechanical description for the polarization dependence of Raman spectra of TMDs in which the optical dipole transition matrix elements as a function of laser excitation energy
R, Saito, Y, Tatsumi, S, Huang, X, Ling, M S, Dresselhaus   +4 more
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Phase engineering of transition metal dichalcogenides

Chemical Society Reviews, 2015
The co-existence of 2H, 1T and 1T′ phases in monolayered TMDs.
Damien, Voiry, Aditya, Mohite, Manish, Chhowalla   +2 more
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Layered Transition Metal Dichalcogenides

1992
Among the layered transition metal dichalcogenides, TaS2 and TaSe2 have attracted considerable attention because they exist in various polytypes and exhibit a rich variety of charge density wave (CDW) phenomena. Moreover, these materials are in some sense prototypical for nuclear spectroscopy on CDW systems because 181 Ta happens to be a suitable ...
Michio Naito, Hironori Nishihara, Tilman Butz   +2 more
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Excited Biexcitons in Transition Metal Dichalcogenides

Nano Letters, 2015
The Stochastic Variational Method (SVM) is used to show that the effective mass model correctly estimates the binding energies of excitons and trions but fails to predict the experimental binding energy of the biexciton. Using high-accuracy variational calculations, it is demonstrated that the biexciton binding energy in transition metal ...
David K, Zhang, Daniel W, Kidd, Kálmán, Varga   +2 more
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Flexoelectricity in Monolayer Transition Metal Dichalcogenides

The Journal of Physical Chemistry Letters, 2018
Flexoelectricity, the coupling effect of the strain gradient and charge polarization, is an important route to tune electronic properties of low-dimensional materials. Here our extensive first-principles calculations reveal that structural wrinkling and corrugation will cause significant flexoelectricity in transition metal dichalcogenide (TMD ...
Wenhao Shi, Yufeng Guo, Zhuhua Zhang, Wanlin Guo   +3 more
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Excitons in monolayer transition metal dichalcogenides

Journal of Physics: Condensed Matter, 2015
We theoretically investigate the exciton formed with two massive Dirac particles in monolayer [Formula: see text] and other transition metal dichalcogenides as well as two layers separated by a dielectric layer. In the low-energy limit, the separation of the center-of-mass and relative motions is obtained.
J, Li, Y L, Zhong, Dong, Zhang
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Metal to semiconductor transition in metallic transition metal dichalcogenides

Journal of Applied Physics, 2013
We report on tuning the electronic and magnetic properties of metallic transition metal dichalcogenides (mTMDCs) by 2D to 1D size confinement. The stability of the mTMDC monolayers and nanoribbons is demonstrated by the larger binding energy compared to the experimentally available semiconducting TMDCs. The 2D MX2 (M = Nb, Ta; X = S, Se) monolayers are
Yan Li, Sefaattin Tongay, Qu Yue, Jun Kang, Junqiao Wu, Jingbo Li   +5 more
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