Molybdenum Disulphide Nanosheet: Hydrothermal Synthesis and Characterization

Abstract

In the field of nanotechnology, MoS2 nanosheets have a wide range of applications because of their unique properties. Here, we report hydrothermal method of synthesis of MoS2 nanosheet. The as- synthesized MoS2 nanosheets are characterized by the Scanning electron spectroscopy (SEM), X ray diffraction (XRD) studies, UV visible spectroscopy, Photoluminescence (PL) spectroscopy and I-V characteristics to determine their morphological, structural, optical and electrical properties. The SEM image confirms the synthesis of well-shaped nanosheet like structure with length 9.6 μm and breadth 3.2 μm but the thickness is in the nanorange. The UV–Vis spectra show the absorption peak of MoS2 at 313.13 nm and a band gap calculated is found to be 2.68 eV. The XRD peaks are observed at 14°, 25.46° and 33.79° corresponding to (002), (111) and (100) plane. XRD also gives the crystalline size of nanoparticles about 112.8 nm. Photoluminescence spectra shows that the maximum emission peak is at 465.79 nm for excitation wavelength at 350 nm. The I-V characteristic gives the information that the curve is nonlinear, asymmetric and the p–n junction are formed with the high reverse break-down voltage of MoS2.