NEW INSIGHT INTO THE EFFECT OF NOZZLE DIAMETER ON THE PROPERTIES OF SPRAYED ZnO THIN FILMS

Abdellah Rahmani, Louardi Remache, Mohammed Guendouz, Nathalie Lorrain, Ali Djermane and Lazhar Hadjeris
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Abdellah Rahmani: University de Rennes 1, CNRS, Institut FOTON, UMR-CNRS 6082, Lannion Cedex, F-22305, France†Laboratoire des Matériaux et Structure des Systèmes, Électromécaniques et leur Fiabilité LMSSEF, Larbi Ben Méhidi University, N10, Oum El Bouaghi, 04000, Algérie
Louardi Remache: ��Laboratoire des Matériaux et Structure des Systèmes, Électromécaniques et leur Fiabilité LMSSEF, Larbi Ben Méhidi University, N10, Oum El Bouaghi, 04000, Algérie
Mohammed Guendouz: University de Rennes 1, CNRS, Institut FOTON, UMR-CNRS 6082, Lannion Cedex, F-22305, France
Nathalie Lorrain: University de Rennes 1, CNRS, Institut FOTON, UMR-CNRS 6082, Lannion Cedex, F-22305, France
Ali Djermane: ��Laboratoire des Matériaux et Structure des Systèmes, Électromécaniques et leur Fiabilité LMSSEF, Larbi Ben Méhidi University, N10, Oum El Bouaghi, 04000, Algérie
Lazhar Hadjeris: ��Laboratoire des Matériaux et Structure des Systèmes, Électromécaniques et leur Fiabilité LMSSEF, Larbi Ben Méhidi University, N10, Oum El Bouaghi, 04000, Algérie

International Journal of Innovation Management (ijim), 2022, vol. 29, issue 03, 1-10

Abstract: Zinc oxide (ZnO) nanofibers and nanopetals were successfully deposited onto mesoporous silicon (meso-PSi), silicon, and glass substrates using zinc acetate via Spray Pyrolysis method. Electrochemical etching of the P-type (100) silicon wafer was used to prepare the mesoporous silicon layer. The effects of nozzle diameter and substrate type on the morphological, structural, and optical properties were investigated using XRD, SEM, EDX techniques, FT-IR, and UV-Vis spectrometry. Scanning Electron Microscopy (SEM) confirms the meso-PSi morphology with a diameter varying from 20nm to 45nm and illustrates the prepared ZnO nanostructures. EDX results show that the ratio of Zn:O is found to be similar to 1:1 for the 3-mm diameter when the oxygen is much higher than the Zn element in the 18-mm diameter. XRD measurements indicated that all films show a hexagonal Wurtzite structure with a variation of crystallographic properties and orientation according to the prepared morphology. The mean value of the crystallite size is 14.27nm for the 3-mm diameter and 19.01 nm for the 18-mm diameter. The variation in the morphological characteristics of the deposited ZnO leads to a variation in the optical properties of the sprayed ZnO thin films. The layers bandgap energy (Eg) was estimated to be 3.28 and 3.26eV for the ZnO layers prepared by 18-mm and 3-mm nozzle diameters, respectively. This study is also helpful for subsequent studies on the tailoring of morphology and ZnO growth control on PSi substrates.

Keywords: ZnO; nanopetals; nanofibers; porous silicon; spray pyrolysis; thin films (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1142/S0218625X22500391

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