Lattice strain effects on the optical properties of MoS2 nanosheets View Full Text


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Article Info

DATE

2015-05

AUTHORS

Lei Yang, Xudong Cui, Jingyu Zhang, Kan Wang, Meng Shen, Shuangshuang Zeng, Shadi A Dayeh, Liang Feng, Bin Xiang

ABSTRACT

"Strain engineering" in functional materials has been widely explored to tailor the physical properties of electronic materials and improve their electrical and/or optical properties. Here, we exploit both in plane and out of plane uniaxial tensile strains in MoS2 to modulate its band gap and engineer its optical properties. We utilize X-ray diffraction and cross-sectional transmission electron microscopy to quantify the strains in the as-synthesized MoS2 nanosheets and apply measured shifts of Raman-active modes to confirm lattice strain modification of both the out-of-plane and in-plane phonon vibrations of the MoS2 nanosheets. The induced band gap evolution due to in-plane and out-of-plane tensile stresses is validated by photoluminescence (PL) measurements, promising a potential route for unprecedented manipulation of the physical, electrical and optical properties of MoS2. More... »

PAGES

5649

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/srep05649

DOI

http://dx.doi.org/10.1038/srep05649

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1003354091

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/25008782


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