Synthesis and Characterization of Ni2+-doped SnO2 Powders
Main Article Content
Abstract
In this study, SnO2:Ni2+ powders with dopant contents ranging from 0.0 to 12 mol% were synthesized by sol-gel method. The samples were characterized by X-ray diffraction (XRD) Raman spectroscopy, energy-dispersive X-ray spectrometer (EDS) and photoluminescense (PL) spectra. The XRD analysis shows that the samples doped with low Ni- concentrations exhibited single SnO2crystalline phase, whereas the samples doped with high Ni- concentrations exhibited a mixture of SnO2 and NiO phases. The latti ce parameters of the SnO2 host were independent of Ni2+ dopant content, while Raman mode positions were dependent on Ni2+ dopant content. The PL spectrum of the undoped SnO2 was characterized by the emission peaks due to near band edge (NBE) emission and the violet emission peaks associated with surface dangling bonds or oxygen vacancies and Sn interstitials.
Keywords:
SnO2:Ni2 powders, sol-gel method, photoluminescense
References
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[13] N. Salah, S. Habib, A. Azam, M.S. Ansari, W.M. AL-Shawafi, Formation of Mn-doped SnO2
Nanoparticles Via the Microwave Technique: Structural, Optical and Electrical Properties, Nanomater Nanotechnol 6 (2016) 1-8. https://doi.org/10.5772/62520.
[14] N. Bhardwaj, S. Kuriakose, S. Mohapatra, Structural and optical properties of SnO2 nanotowers and interconnected nanowires prepared by carbothermal reduction method, J. Alloys Compd. 592 (2014) 238–243. http://dx.doi.org/10.1016/j.jallcom.2013.12.268.
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