Strain tuning of optical emission energy and polarization in monolayer and bilayer MoS2

@article{GWang2013StrainTO,
  title={Strain tuning of optical emission energy and polarization in monolayer and bilayer MoS2},
  author={G.Wang and C. Zhu and B. Liu and X. Marie and Q. Feng and X.X.Wu and H. Fan and P. Tan and T. Amand and B. Urbaszek},
  journal={Physical Review B},
  year={2013},
  volume={88},
  pages={121301}
}
We use micro-Raman and photoluminescence (PL) spectroscopy at 300 K to investigate the influence of uniaxial tensile strain on the vibrational and optoelectronic properties of monolayer and bilayer MoS2 on a flexible substrate. The initially degenerate E' monolayer Raman mode is split into a doublet as a direct consequence of the strain applied to MoS2 through Van der Waals coupling at the sample-substrate interface. We observe a strong shift of the direct band gap of 48 meV/(% of strain) for… Expand

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