OPTICAL, STRUCTURAL, AND MORPHOLOGICAL PROPERTIES OF UNDOPED AND EUROPIUM DOPED ZnO

F. Touri, A. Sahari, A. Zouaoui, F. Deflorian and L. Guerbous
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F. Touri: Laboratoire de Croissance et de Caractérisation de Nouveaux Semi-Conducteurs, Université de Sétif1, Sétif 19000, Algeria
A. Sahari: Laboratoire de Croissance et de Caractérisation de Nouveaux Semi-Conducteurs, Université de Sétif1, Sétif 19000, Algeria
A. Zouaoui: Laboratoire de Croissance et de Caractérisation de Nouveaux Semi-Conducteurs, Université de Sétif1, Sétif 19000, Algeria
F. Deflorian: #x2020;Department of Industrial Engineering, University of Trento, Via Mesiano 77, Trento 38123, Italy
L. Guerbous: #x2021;Laser Department/Nuclear Research Centre of Algiers (CRNA), 02 Boulevard Frantz Fanon, B.P. 399, Algiers 16000, Algeria

Surface Review and Letters (SRL), 2020, vol. 27, issue 03, 1-9

Abstract: Undoped and europium doped ZnO films were electrodeposited from precursor solution on indium tin oxide (ITO) surfaces. Undoped ZnO nanorods were successfully obtained and grown under diffusion control perpendicularly (c axis) on the ITO surface. The X-ray diffraction (XRD) analysis showed a wurtzite structure with sizes of the hexagonal unit cell: a=3.2045Å =b and c=5.2033Å. After insertion of Eu3+ into the ZnO matrix, XRD analysis shows a shift of preferential peak to lower angles (2θ) indicating that a dislocation occurs into the unit cell with modification of its parameters. The grain sizes of doped ZnO decrease with increasing Eu3+ rate. Scanning electron microscopy (SEM) images show a clear change of morphological structure from nanorods to a nanosheet structure. Photoluminescence tests clearly showed an improvement in emission bands and the corresponding intensities are important in Eu3+ doped ZnO.

Keywords: Zinc oxide; electrodeposition; wurtzite; europium; chronoamperomtry; photoluminescence (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0218625X19501142

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