Structural and optical characterization of stacked MoS2 nanosheets by hydrothermal method

Molybdenum disulfide (MoS2), as a layered transition metal dichalcogenides (TMDCs) has profound applications in electronic devices, sensors, Li-ion batteries, solar cells, water purification, photo catalysis etc. Layered TMDCs are obtained through exfoliation of bulk material. There are various methods for synthesizing layered TMDCs from their respective bulk form. In this paper, we report hydrothermal method as the easiest and environmentally friendly way of preparing stacked MoS2 nanosheets from its bulk form. Here we confirm the structural and morphological properties of these stacked nanosheets by X-ray diffraction and electron microscopy. Energy dispersive X-ray analyzer confirms the elemental composition of the prepared MoS2 nanolayer. Optical properties of the stacked MoS2 were characterized by UV-Vis spectroscopy and photoluminescence spectroscopy (PL). The CIE chromaticity diagram identifies the color of the emission using PL data.