SYNTHESIS AND MAGNETIC PROPERTIES OF Ni-DOPED ZnO THIN FILMS: EXPERIMENTAL AND AB INITIO STUDY

M. Rouchdi (), E. Salmani, A. El Hat, N. Hassanain and A. Mzerd
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M. Rouchdi: Faculty of Sciences, Mohammed V University, Materials Physics Laboratory, B.P. 1014 Rabat, Morocco
E. Salmani: #x2020;Faculty of Sciences, LMPHE, Mohammed V University, B.P. 1014 Rabat, Morocco
A. El Hat: Faculty of Sciences, Mohammed V University, Materials Physics Laboratory, B.P. 1014 Rabat, Morocco
N. Hassanain: Faculty of Sciences, Mohammed V University, Materials Physics Laboratory, B.P. 1014 Rabat, Morocco
A. Mzerd: Faculty of Sciences, Mohammed V University, Materials Physics Laboratory, B.P. 1014 Rabat, Morocco

Surface Review and Letters (SRL), 2017, vol. 24, issue 06, 1-10

Abstract: Structural and magnetic properties of Zn1−xNixO thin films and diluted magnetic semiconductors have been investigated. This sample has been synthesized using a spray pyrolysis technique with a stoechiometric mixture of zinc acetate (C4H6O4Zn⋅2H2O) and Nickel acetate (C4H6O4Ni⋅ 2H2O) on a heated glass substrate at 450∘C. The films were characterized by X-ray diffraction (XRD), UV–Vis spectrophotometry and Hall Effect measurements. These films of ZnO crystallized in the hexagonal Wurtzite structure. The optical study showed that the band-gap energy was increased, from 3.3eV to 3.5eV, with increasing the Ni concentration. The film resistivity was affected by Ni-doping, and the best resistivity value 1.15×10−2 (Ω cm) was obtained for the film doped with 2 at.% Ni. The electronic structure and optical properties of the Wurtzite structure Zn1−xNixO were obtained by first-principles calculations using the Korringa–Kohn–Rostoker method combined with the coherent potential approximation (CPA), as well as CPA confirm our results.

Keywords: ZnO; thin films; spray pyrolysis; optical properties; Hall Effect and first-principles calculations (search for similar items in EconPapers)
Date: 2017
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DOI: 10.1142/S0218625X17500858

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