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    • Abstract

       

      The aim of this work is to study the effect of barium (Ba) doping on the optical, morphological and structural properties of ZnO nanoparticles. Undoped and Ba-doped ZnO have been successfully synthesized via sonochemical method using zinc nitrate, hexamethylenetetramine (HMT) and barium chloride as startingmaterials. The structural characterization by XRD and FTIR shows that ZnO nanoparticles are polycrystalline with a standard hexagonal ZnO wurtzite crystal structure. Decrease in lattice parameters from diffraction data shows the presence of Ba$^{2+}$ in the ZnO crystal lattice. The morphology of the ZnO nanoparticles has been determined by scanning electron microscopy (SEM). Incorporation of Ba was confirmed from the elemental analysis using EDX. Optical analysis depicted that all samples exhibit an average optical transparency over 80%, in the visible range. Room-temperature photoluminescence (PL) spectra detected a strong ultraviolet emission at 330 nmand two weak emission bands were observed near 417 and 560 nm. Raman spectroscopy analysis of Ba-doped samples reveals the successful doping of Ba ions in the host ZnO.

    • Author Affiliations

       

      N’KONOU KEKELI1 HARIS MUTHIAH2 LARE YENDOUBÉ1 BANETO MAZABALO1 NAPO KOSSI1

      1. Laboratoire sur l’Énergie Solaire, Université de Lomé, BP 1515, Lomé – Togo
      2. Department of Physics, Karunya University, Coimbatore 641 114, India
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  • Pramana – Journal of Physics | News

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