Eur. Phys. J. Appl. Phys.
Volume 91, Number 1, July 2020
|Number of page(s)||7|
|Published online||04 August 2020|
Red luminescence and UV light generation of europium doped zinc oxide thin films for optoelectronic applications
The Engineering Sciences Laboratory for Energy, National Engineering School of Applied Sciences. Chouaib Doukkali University, El Jadida, Morocco
2 Laboratory of Materials and Valorizations of Natural Resources, University Abdelmalek, Essaadi, Tangier, Morocco
3 Laboratoire des Solides Irradiés (LSI), CEA/DRF/lRAMIS, Ecole Polytechnique, CNRS, lnstitut Polytechnique de Paris, 91128 Palaiseau, France
4 Institute of sciences and molecular technologies of Angers, MOLTECH Anjou − UMR CNRS 6200 Molecular Interaction Nonlinear Optics and Structuring MINOS, 49045, ANGERS cedex 2, France
* e-mail: email@example.com
Received in final form: 15 June 2020
Accepted: 19 June 2020
Published online: 4 August 2020
In the present work, the Europium doped Zinc Oxide (ZnO: Eu) thin films were elaborated using spray pyrolysis technique. We are interested in investigating the structural properties, photoluminescence (PL) and third harmonic generation (THG) of the elaborated films. The structural properties of as-prepared thin films were characterized by X-ray diffraction (XRD). It confirms that all deposited thin films of Europium doped Zinc Oxide are crystallized in the hexagonal wurtzite structure. Both undoped and doped europium thin films show strong preferred c-axis orientation. Photoluminescence (PL) emission from Europium doped Zinc Oxide thin films, under excitation by 266 nm, shows characteristic transitions of Europium (5D0 → 7F0, 5D0 → 7F1, 5D0 → 7F2, etc.). It reveals the good incorporation of Eu3+ ions in the ZnO host. Additionally, the 5D0 → 7F2 is the most intense transition usually observed for Eu3+ embedded in materials of Zinc Oxide lattice. The dependence of third-order nonlinear susceptibility on doping rate was evaluated. The highest nonlinear susceptibility χ 3 is obtained for the 5% Europium doped ZnO sample.
© EDP Sciences, 2020
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