Abstract
This paper reports a profound method to prepare MoS 2, and the effect of ultraviolet light irradiation on its emission characteristics. The exfoliation of molybdenum di-sulfide (MoS 2 ) 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 MoS 2 dispersions at different exfoliation time indicate that the concentration of MoS 2 nanosheets as well as MoS 2 quantum dots increased remarkably with increasing exfoliation time. We also note that the non-radiative recombination due to UV irradiation on MoS 2 results into the decrease of emission intensity.
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