Optimization of the Concentration of Molybdenum Disulfide (MoS2) for Formation of Atomically Thin Layers

  • Vineeta
  • Shyama RathEmail author
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 215)


Transition metal dichalcogenides (TMDs) are layered materials with strong in-plane and weak out-of-plane interactions enabling exfoliation into two-dimensional thin sheets. Although TMDs have been studied for decades, recent advances in nanoscale materials characterization and device fabrication have opened up new opportunities for two-dimensional layers of thin TMDs in nanoelectronics and optoelectronics. Our present work focuses on optimizing the concentration of MoS2 to produce atomically thin nanosheets using Liquid Phase Exfoliation. The resultant dispersions were analyzed by absorption, photoluminescence spectroscopy and Raman spectroscopy. A significant light emission was observed.



Vineeta is thankful to UGC for the award of a Junior Research Fellowship.


  1. 1.
    J.N. Coleman et al., Two-dimensional nanosheets produced by liquid exfoliation of layered materials. Science 331, 568–571 (2011)ADSCrossRefGoogle Scholar
  2. 2.
    B.C. Brodie, On the atomic weight of graphite. Philos. Trans. R. Soc. Lond. 149, 12 (1859)Google Scholar
  3. 3.
    Q.H. Wang, K. Kalantar-Zadeh, A. Kis, J.N. Coleman, M.S. Strano, Electronics and optoelectronics of two-dimensional transition metal dichalcogenides. Nat. Nanotechnol. 7, 699–712ADSCrossRefGoogle Scholar
  4. 4.
    M.M. Bernal, L. Álvarez, E. Giovanelli, A. Arnáiz, L. Ruiz-González, S. Casado, D. Granados, A.M. Pizarro, A. Castellanos-Gomez, E.M. Perez, Luminescent transition metal dichalcogenide nanosheets through one-step liquid phase exfoliation. 2D Mater. 3(3)CrossRefGoogle Scholar
  5. 5.
    D. Gopalakrishnan, D. Damien, M.M. Shaijumon, MoS2 Quantum dot-interspersed exfoliated MoS2 nanosheets. ACS Nano 8(5), 5297–5303 (2014)CrossRefGoogle Scholar
  6. 6.
    K.F. Mak, C. Lee, J. Hone, J. Shan, T.F. Heinz, Atomically thin MoS2: a new direct-gap semiconductor. Phys. Rev. Lett. 105(13), 136805 (2010)ADSCrossRefGoogle Scholar
  7. 7.
    L. Muscuso, S. Cravanzola, F. Cesano, D. Scarano, A. Zecchina, Optical, vibrational, and structural properties of MoS2 nanoparticles obtained by exfoliation and fragmentation via ultrasound cavitation in isopropyl alcohol. J. Phys. Chem. C, 119, 3791–3801 (2015)CrossRefGoogle Scholar
  8. 8.
    H. Li, Q. Zhang, C.C.R. Yap, B.K. Tay, T.H.T. Edwin, A. Olivier, D. Baillargeat, From bulk to monolayer MoS2: evolution of Raman scattering. Adv. Funct. Mater. 22(7), 1385–1390 (2012)CrossRefGoogle Scholar

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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of Physics and AstrophysicsUniversity of DelhiDelhiIndia

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