Strongly luminescent MoS2 nanosheets prepared by liquid phase exfoliation without any surfactant

The thickness and size-dependent characteristics of MoS2 nanosheets lead to the use of this material for basic science research and industrial applications. Until the date, scalable production of MoS2 nanosheets without the addition of any surfactant and hazardous chemicals remains challenging. Our study reports the synthesis of a few layers of MoS2 nanosheets by the use of the liquid-phase exfoliation technique. As-synthesized nanosheets were characterized by UV-Visible spectroscopy, atomic force microscopy (AFM), photoluminescence (PL) and Raman spectroscopy techniques. Our straightforward and efficient preparation directs to very strongly blue luminescing nanosheets.