zn nanoparticles by method variation and their morphological studies

摘要

In this work, we have taken an attempt to synthesize Zn doped NiSe using two different modes - one using the reducing agent hydrazine hydrate at 100°C with PVP as capping agent and the other using PVP only at room temperature. We have also taken an attempt to study the effect of the modes on the size, morphology and fluorescence properties. EDX analysis confirms the presence of the elements Ni, Se and Zn. SEM and XRD revealed that the particle size and shape is greatly influenced by the mode of synthesis, which in turn attributed to the effect of temperature and use of reducing agent hydrazine hydrate. Honey comb like structure of NiSe:Zn was obtained by hydrothermal process, whereas, perfect cubic and mono clinic crystals were obtained by co-precipitation process. Possible mechanism for the formation of different shape crystals is also explained. PL spectra revealed that conductivity of NiSe is enhanced by doping with zinc. There is no observable difference noticed in conductivity by adopting the different modes of synthesis.