Size Dependent Fluorescence Decay Dynamics of MoS2 Nanoflakes

Authors

  • Jyoti Shakya Department of Physical Sciences, Indian Institute of Sciences, Bangalore, India
  • Vijendra Kumar Department of Physics, University of Lucknow, Uttar Pradesh, 226007, India

DOI:

https://doi.org/10.37591/jopc.v8i1.3822

Keywords:

Nanoflakes, UV Irradiation, Nanosheets, molybdenum di-sulfide (MoS2), Transition metal dichalcogenides (TMD

Abstract

This paper reports a profound method to prepare MoS2, and the effect of ultraviolet light irradiation on its emission characteristics. The exfoliation of molybdenum di-sulfide (MoS2) in a liquid phase has been achieved successfully via probe sonication for different time intervals followed by centrifugation method. Ultraviolet–visible (UV–vis) spectra of the obtained MoS2 dispersions at different exfoliation time indicate that the concentration of MoS2 nanosheets as well as MoS2 quantum dots increased remarkably with increasing exfoliation time. We also note that the non-radiative recombination due to UV irradiation on MoS2 results into the decrease of emission intensity.

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Published

2020-04-20

Issue

Vol. 8 No. 1 (2020)

Section

Articles

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