Abstract

The nano crystals were synthesized by two different routes such as thermal reduction process and coprecipitation process and the difference in morphology of NiSe:Zn was studied. Zn doped nickel selenide was synthesized from the reaction of nickel chloride (NiCl₂.6H₂O), sodium selenite (Na₂SeO₃) and anhydrous zinc chloride (ZnCl₂) using poly-N-Vinyl-2-pyrrolidone (PVP) as capping agent and hydrazine hydrate (N₂H₄. H₂O) as reductant in thermal reduction process (method-1). In coprecipitation process it was prepared by the reaction of NiCl₂.6H₂O, Na₂SeO₃ and anhydrous ZnCl₂ using certain amount of PVP which acts as reductant as well as capping agent (method-2). The products were characterized by x-ray diffraction (XRD), Field Emission Scanning electron microscopy (FE-SEM), Energy dispersive x-ray spectroscopy (EDX), Fourier Transform Infra red spectroscopy (FT-IR), Visible Ultra violet spectroscopy (UV) and Photoluminescence (PL) techniques.

Keywords

Nanocrystals, Synthesis, Morphological studies, Facile synthesis