Abstract
A systematic study on the preparation of pure SnO2 nano-particles and Ni-doped SnO2 with different doped
concentrations (0%, 0.3%, 0.7%) have been conducted. Facile sol-gel technique has been used for sample
preparations where as SnCl4, NiCl2 and ammonia solutions were used as precursors. The influence of the Ni
doping concentration on the structure and optical properties of synthesized samples of SnO2 was investigated.
Pure and Ni doped SnO2 nano-particles have been characterized by using X-rays diffraction (XRD), scanning
electron microscopy (SEM), U.V and photoluminescence spectroscopy. X-ray diffraction patterns showed for all
samples that SnO2 have tetragonal structure with no additional peaks corresponding to parasitic phases. This
showed that doped material has been accommodated uniformly inside the SnO2. Particles size of pure and Ni
doped nano-particles was calculated and has ranged from 4 nm to 25 nm. An increasing behaviour of particles
size has been observed with increasing percentage of Ni. Optical properties of the pure and doped materials
showed that decreasing behaviour of optical energy band gap with increasing concentration of Ni which
revealed that the nanometric size of the materials influences the energy band gap values. Optical transmittance
was also measured at room temperature which showed an increasing behaviour with increasing doping
concentration.
Syed Zafar Ilyas, M. Asghar, Mahwish Anwer, Ghulam Nabi. (2018) Synthesis, Characterization and Optical Properties of Ni-Doped Tin Oxide, Pakistan Journal of Engineering and Applied Sciences, VOLUME 22, Issue 1.
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