Bouras Dikra, Mamoun Fellah, Regis Barille, Sabine Weiß, Mohammed Abdul Samad, Alhanouf Alburaikan and Aleksei Obrosov (2024) Improvement of photocatalytic performance and sensitive ultraviolet photodetectors using AC-ZnO/ZC-Ag2O/AZ-CuO multilayers nanocomposite prepared by spin coating method. Journal of Science: Advanced Materials and Devices , 9(), 100642, ُElsevier
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Abstract
Morphological and optical properties of a multilayer film (CAZO/CZAO/ZACO) prepared by spin-coating method and deposited on a glass substrate were evaluated. The study was initially carried out for each layer, individually and then as a multilayer subsequently. Structural properties using X-ray diffraction (XRD), energy-dispersive Xray spectroscopy (EDS), infrared spectra (IR) and X-ray photoelectron Spectroscopy (XPS) showed the presence of three phases of zinc, copper and silver oxides at different levels. The CZAO sample observed with a scanning electron microscope (SEM) showed an excellent porous surface with a large deformation in the multilayer
configuration. Doping with zinc and copper in the silver crystal lattice improved the crystal structure and reduced the optical energy gap, thus increasing the optical absorbance and refractive index. The dielectric constants εr and εi showed an increase in the optical polarization values for lower photonic energies. The maximum degradation rate for photocatalysts of methylene blue was 89 % for a 5-h exposure period with CAZO/CZAO/ZACO while it reached 71 % for the CZAO sample during the same time period. The sensitivity of samples to light proved that the presence of ultraviolet radiation increases the number of holes trapped by oxygen ions and causes more free electrons and contribute to a better production of photocurrent than in darkness.
configuration. Doping with zinc and copper in the silver crystal lattice improved the crystal structure and reduced the optical energy gap, thus increasing the optical absorbance and refractive index. The dielectric constants εr and εi showed an increase in the optical polarization values for lower photonic energies. The maximum degradation rate for photocatalysts of methylene blue was 89 % for a 5-h exposure period with CAZO/CZAO/ZACO while it reached 71 % for the CZAO sample during the same time period. The sensitivity of samples to light proved that the presence of ultraviolet radiation increases the number of holes trapped by oxygen ions and causes more free electrons and contribute to a better production of photocurrent than in darkness.
Information
| Item Type | Journal |
|---|---|
| Divisions | |
| ePrint ID | 4788 |
| Date Deposited | 2024-01-14 |
| Further Information | Google Scholar |
| URI | https://univ-soukahras.dz/en/publication/article/4788 |
BibTex
@article{uniusa4788,
title={Improvement of photocatalytic performance and sensitive ultraviolet photodetectors using AC-ZnO/ZC-Ag2O/AZ-CuO multilayers nanocomposite prepared by spin coating method},
author={Bouras Dikra, Mamoun Fellah, Regis Barille, Sabine Weiß, Mohammed Abdul Samad, Alhanouf Alburaikan and Aleksei Obrosov},
journal={Journal of Science: Advanced Materials and Devices}
year={2024},
volume={9},
number={},
pages={100642},
publisher={ُElsevier}
}
title={Improvement of photocatalytic performance and sensitive ultraviolet photodetectors using AC-ZnO/ZC-Ag2O/AZ-CuO multilayers nanocomposite prepared by spin coating method},
author={Bouras Dikra, Mamoun Fellah, Regis Barille, Sabine Weiß, Mohammed Abdul Samad, Alhanouf Alburaikan and Aleksei Obrosov},
journal={Journal of Science: Advanced Materials and Devices}
year={2024},
volume={9},
number={},
pages={100642},
publisher={ُElsevier}
}