Optical properties of ZnO/BaCO3 nanocomposites in UV and visible regions
1 Malaysia-Japan International Institute of Technology (MJIIT), University Teknologi Malaysia (UTM), Jalan Semarak, Kuala Lumpur 54100, Malaysia
2 Nanotechnology Laboratory, Esfarayen University of Technology, Esfarayen 96619-98195, North Khorasan, Iran
3 Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad 3316-913791, Iran
Nanoscale Research Letters 2014, 9:399 doi:10.1186/1556-276X-9-399Published: 18 August 2014
Pure zinc oxide and zinc oxide/barium carbonate nanoparticles (ZnO-NPs and ZB-NPs) were synthesized by the sol–gel method. The prepared powders were characterized by X-ray diffraction (XRD), ultraviolet–visible (UV–Vis), Auger spectroscopy, and transmission electron microscopy (TEM). The XRD result showed that the ZnO and BaCO3 nanocrystals grow independently. The Auger spectroscopy proved the existence of carbon in the composites besides the Zn, Ba, and O elements. The UV–Vis spectroscopy results showed that the absorption edge of ZnO nanoparticles is redshifted by adding barium carbonate. In addition, the optical parameters including the refractive index and permittivity of the prepared samples were calculated using the UV–Vis spectra.
81.05.Dz; 78.40.Tv; 42.70.-a.