Abstract
Two dimensional metal chalcogenides are promising candidate for optoelectronics owing to their interesting physical and chemical properties. In the present work, 2-D layer structured CuSe nanosheets were developed by simple hot injection method. Oleic acid has been employed as solvent as well as capping agent and CuCl, elemental sulfur have been used as precursors at the reaction temperature of 220OC. Crystallinity and phase of the products were characterized by X-ray diffraction (XRD). XRD patterns confirm the presence of hexagonal Klockmannite (CuSe) with space group of P63/mmc. Morphological analyses were carried out through SEM analysis which depicts the 2-D layered nanosheets of CuSe with two different orientations of nanosheets. Elemental composition of copper to selenium ratio was confirmed through Energy dispersive X-ray spectroscopy (EDS) which reveals the stoichiometry of CuSe nanosheets. The EDS results are in line with the XRD results. Optical properties were analysed through UV-Vis absorption spectroscopy in the wavelength range of 350 nm to 900 nm. The presence of capping agent over the CuSe nanosheets were confirmed from Fourier transform infrared spectroscopy (FT-IR).
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