Observation of piezoelectricity in free-standing monolayer MoS2
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چکیده
منابع مشابه
Observation of piezoelectricity in free-standing monolayer MoS₂.
Piezoelectricity allows precise and robust conversion between electricity and mechanical force, and arises from the broken inversion symmetry in the atomic structure. Reducing the dimensionality of bulk materials has been suggested to enhance piezoelectricity. However, when the thickness of a material approaches a single molecular layer, the large surface energy can cause piezoelectric structur...
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Free-standing electronic character of monolayer MoS2 in van der Waals epitaxy HoKwon Kim ( ),1,2,* Dumitru Dumcenco,1,2 Mathieu Frégnaux,3,4,† Anass Benayad,3,5 Ming-Wei Chen,1,2 Yen-Cheng Kung,1,2 Andras Kis,1,2 and Olivier Renault3,4 1Electrical Engineering Institute, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland 2Institute of Materials Science and Engineering...
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Novel physical phenomena can emerge in low-dimensional nanomaterials. Bulk MoS(2), a prototypical metal dichalcogenide, is an indirect bandgap semiconductor with negligible photoluminescence. When the MoS(2) crystal is thinned to monolayer, however, a strong photoluminescence emerges, indicating an indirect to direct bandgap transition in this d-electron system. This observation shows that quan...
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Two-dimensional semiconductors such as MoS2 are an emerging material family with wide-ranging potential applications in electronics, optoelectronics, and energy harvesting. Large-area growth methods are needed to open the way to applications. Control over lattice orientation during growth remains a challenge. This is needed to minimize or even avoid the formation of grain boundaries, detrimenta...
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ژورنال
عنوان ژورنال: Nature Nanotechnology
سال: 2014
ISSN: 1748-3387,1748-3395
DOI: 10.1038/nnano.2014.309