Syntheses, structural evolution, electrical and optoelectronic characterization of ZnO/CuO composite films doped with transition metal Mn2+ ions

In this research, thin film composite structures were used to prepare optoelectronic devices from bare and Bi‐substituted p‐CuO/n‐ZnO systems. The p‐CuO/n‐ZnO composite thin film structures were prepared by the SILAR technique, and the influences of two different Bi contents on the structure and main physical performances of the samples were investigated. The X‐ray diffraction (XRD) technique showed that the composited thin film materials were multiphased in rutile hexagonal (wurtzite) phase (ZnO) and monoclinic tenorite phase (CuO) type crystal structure. The obtained surface morphological results presented that the structure exhibits an almost homogeneous, plate‐like surface distribution, and depending on the increase of Bi concentration, the plate‐like sheet area widens from ~2.5 μm to 10 μm and the layer boundaries decrease. FT‐IR and Raman spectroscopy were used to investigate the various vibration and Raman active phonon modes of Bi:p‐CuO/n‐ZnO nanostructured heterostructures. For a comprehensive analysis of the optical bandgap of the fabricated composite samples, the estimated values were obtained from the Tauc plot. Produced samples exhibited an Ohmic behavior and dc resistivity values of films can be determined via Ohm′s Law. The adjusted sheet resistance value of 11.51 MΩ/sq when the content of Bi 3.0 % in the growth bath.

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“…In situations like this, sheet resistivity values of samples were calculated using the equation, as given below (Eq. ; [13e,37]

\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr {R}_{s}={\rho /t}\hfill\cr}}

…”

Section: Resultsmentioning

confidence: 99%

Investigation of Multi‐Phase Structure and Optoelectronic Performance of Bi‐Doped (Cu−Zn) Oxide Composite Thin Films

et al. 2023

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“…The elemental composition and chemical state was analyzed by X-ray photoelectron spectroscopy (XPS) on a PHI 5000 Versa Probe II spectrometer using Al Kα radiation. Optical absorption behavior was evaluated using a Shimadzu UV-3600 UV-VIS-NIR spectrophotometer equipped with an integrating sphere 4 .…”

Section: Methodsmentioning

confidence: 99%

Sustainable green synthesis and characterization of nanocomposites for synergistic photocatalytic degradation of Reactive Orange 16 in textile wastewater using CuO@A-TiO2/Ro-TiO2

Nassar,

Elfiky,

El-Sawaf

et al. 2024

Sci Rep

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This paper explores the photocatalytic degradation of Reactive Orange 16 (RO16) dye in textile wastewater employing a novel CuO@A-TiO2/Ro-TiO2 nanocomposite. The nanocomposite was synthesized via a hydrothermal technique, resulting in a monoclinic phase of leaf-shaped CuO loaded on a hexagonal wurtzite structure of rod-shaped ZnO, as confirmed by FE-SEM and XRD analyses. Optical experiments revealed band gap energies of 1.99 eV for CuO, 2.19 eV for ZnO, and 3.34 eV for the CuO@A-TiO2/Ro-TiO2 nanocomposite. Photocatalytic degradation experiments showcased complete elimination of a 100 mg/L RO16 solution (150 mL) after 120 min of UV light illumination and 100 min of sunlight illumination, emphasizing the nanocomposite's efficiency under both light sources. The study further delves into the application of the CuO@A-TiO2/Ro-TiO2 nanocomposite for the degradation of actual textile wastewater samples under sunlight irradiation. The results underscore the nanocomposite's remarkable efficacy in treating RO16 in textile wastewater, positioning it as a promising candidate for sustainable and efficient wastewater treatment applications. This research contributes valuable insights into the development of advanced photocatalytic materials for textile dye degradation in wastewater treatment.

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“…It also exhibits high electron mobility and excellent thermal and mechanical stability. Thanks to these properties, ZnO coatings have become integral components in numerous recent device developments, spanning a wide range of applications, such as solar cells, supercapacitors, lightemitting diodes, ultraviolet photodetectors, functional surface coatings, sensors, and biomedical applications [1,2]. Recently, studies have focused on the effect of doping metal oxides in improving the electrical, optical, and magnetic properties of ZnO [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Optical and electric characteristics of CuO nanoparticle-doped ZnO thin films using thermionic vacuum arc deposition system

Ozer,

Ozkan,

Pat

2024

J Mater Sci: Mater Electron

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In this study, the thermionic vacuum arc (TVA) method was employed to fabricate thin films of zinc oxide (ZnO) doped with copper oxide nanoparticles (CuONPs). The primary objective was to investigate the influence of the substrate on the characteristics of the CuONPs-doped ZnO thin films. CuONPs were synthesized using both the solution plasma process and the high-voltage liquid plasma generation method, resulting in particle sizes ranging from 20 to 40 nm. The X-ray diffraction (XRD) pattern confirmed the polycrystalline nature of the CuONPs. The prepared CuONPs in powder form were blended with ZnO powder and utilized as an anode material for TVA discharge and coating. The structural, optical, elemental, and topological properties of the resulting thin films were systematically examined. The findings revealed that the deposited thin films exhibited a polycrystalline structure, with transparent and electrically conductive layers. Similar reflection values were observed for films deposited on both glass and indium tin oxide (ITO)-coated glass substrates. Nanostructures on the film surfaces were elucidated through field emission scanning electron microscopy images. The atomic ratios of Cu/Zn were determined as 1/3 and 1/10 for films deposited on uncoated and ITO-coated glass substrates, respectively. The mean grain size of the nanoparticles on the film surface measured approximately 17 nm for films deposited on uncoated glass substrates and 35 nm for those deposited on ITO-coated glass substrates. The film resistance was measured at 20 kΩ, indicating its suitability as a semiconductor. Analysis of the XRD pattern identified peaks corresponding to CuONPs and ZnO in the deposited films, affirming their polycrystalline nature. In conclusion, the deposited thin films exhibit favorable characteristics for semiconductor applications, and the coating method employed proves to be effective in producing high-quality thin films.

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Syntheses, structural evolution, electrical and optoelectronic characterization of ZnO/CuO composite films doped with transition metal Mn2+ ions

Cited by 15 publications

References 89 publications

Investigation of Multi‐Phase Structure and Optoelectronic Performance of Bi‐Doped (Cu−Zn) Oxide Composite Thin Films

Investigation of Multi‐Phase Structure and Optoelectronic Performance of Bi‐Doped (Cu−Zn) Oxide Composite Thin Films

Sustainable green synthesis and characterization of nanocomposites for synergistic photocatalytic degradation of Reactive Orange 16 in textile wastewater using CuO@A-TiO2/Ro-TiO2

Optical and electric characteristics of CuO nanoparticle-doped ZnO thin films using thermionic vacuum arc deposition system

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