Synthesis, Optical and Photoluminescence Properties of Cu-Doped Zno Nano-Fibers Thin Films: Nonlinear OpticsG.F.Salem ; I.S. Yahia ; F. Yakuphanoglu
Abstract© 2017, The Minerals, Metals & Materials Society. Different concentrations of copper-doped zinc oxide thin films were coated on a glass substrate by sol–gel/spin-coating technique. The structural properties of pure and Cu-doped ZnO films were characterized by different techniques, i.e., atomic force microscopy (AFM), photoluminescence and UV–Vis-NIR spectroscopy. The AFM study revealed that pure and doped ZnO films are formed as nano-fibers with a granular structure. The photoluminescence spectra of these films showed a strong ultraviolet emission peak centered at 392 nm and a strong blue emission peak cantered at 450 nm. The optical band gap of the pure and copper-doped ZnO thin films calculated from optical transmission spectra (3.29–3.23 eV) were found to be increasing with increasing copper doping concentration. The refractive index dispersion curve of pure and Cu-doped ZnO film obeyed the single-oscillator model. The optical dispersion parameters such as E o , E d , and n∞2 were calculated. Further, the nonlinear refractive index and nonlinear optical susceptibility were also calculated and interpreted.
|Keywords||Cu-doped ZnO, nano-fibers, sol–gel/spin-coating method, AFM, photo-luminescence, optical dispersion parameters, nonlinear optics||Issue Date||1-Mar-2018||Journal||Journal of Electronic Materials||URI||http://api.elsevier.com/content/abstract/scopus_id/85037610276
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