Optical, structural and electrical properties of ZnO thin films doped with Mn

López-Suárez, A.; Acosta, Dwight; Magaña, Carlos; Hernández, Francisco

doi:10.1007/s10854-019-02830-8

Cited by 41 publications

(12 citation statements)

References 41 publications

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“…The transmittance spectra of the bare ZnO and Cu x S thin films and of the Cu x S-ZnO composites as deposited at 300°C and after annealing at 400°C are included in Figure 4. The spectrum of the ZnO thin film shows a maximum transmittance of approximately 80% in the VIS region, which is close to the values reported in literature [35], while Cu x S thin films have a low transmittance value, of maximum 18%. For the Cu x S-ZnO composite deposited at 300°C, a slight increase in the transmittance, close to 23%, is observed as result of the interaction between the Cu x S and ZnO thin films and/or as result of the partial oxidation of the Cu x S thin film.…”

Section: Optical Propertiessupporting

confidence: 89%

Optical and Photocatalytic Properties of CuxS/ZnO Composite Thin Films Deposited by Robotic Spray Pyrolysis Deposition

Yepseu

Isac

Nyamen

et al. 2021

Journal of Nanomaterials

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This article reports on VIS-active composite thin films based on zinc oxide (ZnO) and copper sulfide (CuxS) deposited using robotic spray pyrolysis deposition (SPD) for the study of the optical and photocatalytic properties. The first step involves the SPD deposition of a CuxS layer onto the glass substrate at 300°C. The second step consists of the deposition of a ZnO layer onto the CuxS layer to form glass/CuxS-ZnO composites that were further annealed at 400°C. The development of the composite thin films was confirmed by XRD and EDX analyses. The band gap energy ( E g ) of the bare ZnO thin films decreased from 3.15 eV to an activation energy value of 2.8 eV after the deposition of the ZnO thin layer onto the CuxS layer and from 2.8 to 2.08 eV after annealing the CuxS-ZnO composite at 400°C. The UV-VIS irradiation (5.5% of UV, G = 55 W / m 2 ) of a 10 ppm methylene blue solution was used to investigate the photocatalytic properties of the CuxS-ZnO composites. The annealed CuxS-ZnO thin films at 400°C demonstrates better photocatalytic activity compared to CuxS-ZnO composites deposited at 300°C. The enhanced photocatalytic efficiency of the annealed CuxS-ZnO thin films may be the result of the diode structure and the increased crystallinity that prevent the electron-hole recombination.

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Section: Optical Propertiessupporting

confidence: 89%

Optical and Photocatalytic Properties of CuxS/ZnO Composite Thin Films Deposited by Robotic Spray Pyrolysis Deposition

Yepseu

Isac

Nyamen

et al. 2021

Journal of Nanomaterials

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“…There was observed a slight difference in the peak position as the annealing temperature increased, that is, there was a bandgap shift slightly. This can be attributed to several reasons such as improvement in crystallinity, variation in density of impurities, and the Burstein-Moss effect [25][26].…”

Section: Resultsmentioning

confidence: 99%

Termal Buharlaştırma ile Üretilen Cu2-xSe İnce Filmlerin Yapısal, Morfolojik ve Optik Özellikleri Üzerine Araştırma

Terlemezoglu

2021

Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi

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In this work, the influence of post-annealing on the structural, morphological, and optical properties of copper selenide thin films deposited on glass substrate by thermal evaporation was investigated in detail. The postannealing process at different ambient temperatures in a nitrogen atmosphere was applied to thin films deposited at room temperature. The X-ray diffraction (XRD) patterns showed the presence of cubic Cu 2-x Se phase, and it was observed that the crystallinity improves with increasing annealing temperature. In addition, it was deduced that the average crystallite size increased with the annealing temperature. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) were employed to investigate the surface morphology of thin films. It was seen that all samples have compact and densely packed surface morphology and grains on the surface become larger. Surface roughness increased from 11nm to 53 nm as the annealing temperature increased. On the other hand, the optical properties of as-deposited and annealed thin films were investigated by utilizing a UV-Visible spectrophotometer. The direct bandgap energies of as-deposited and annealed samples were estimated to be 2.34 eV, 2.31 eV, and 2.29 eV by using the well-known Tauc relation, respectively. The direct bandgap energy of thin films was also calculated using the derivative spectroscopy technique.

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“…The bandgap energy values are 3.22eV, 3.24eV and 3.27eV respectively for the films at 400ºC, 450ºC and 500ºC. The doping of Mn has no effects on the resistivity ZnO and Mn doped ZnO thin film [14]. Here we present the impact of substrate temperature on the structural, morphological, optical and magnetic properties of perfume spray deposited ZnO thin film.…”

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confidence: 89%

Structural, Morphological, Optical, Luminescent and Magnetic Properties of Nanostructured ZnO Thin Film

Visweswaran

Venkatachalapathy

Haris

et al. 2021

Preprint

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ZnO thin film deposited on the glass substrate at various substrate temperature by spray technique using perfume atomizer. The deposited ZnO thin films are annealed at 450ºC. The deposited films are highly transparent and adhered to the substrate. The structure and microstructural, morphological, compositional, optical and luminescent characteristics were studied by X-ray diffraction (XRD), Raman, Field emission scanning electron microscope (FE-SEM with EDX), Atomic force microscope (AFM), Ultra violet visible spectrophotometer (UV-Vis) and photoluminescence spectroscopic techniques. The crystalline nature of annealed film were confirmed from XRD and the shows preferred orientation along (1 0 1) plane. At higher substrate temperature, reorientation of planes was seen. The spherical shaped grains are observed from morphological studies. The roughness of ZnO film, one of the key parameter obtained from AFM, increases with substrate temperature. The high transparency of about 80% in visible region are obtained for ZnO film with band gap ranging from 3.24 – 3.19 eV. The presence of defects in ZnO films are identified from PL bands. The electronic vibrations in ZnO film were understood from Raman spectra. The weak ferromagnetic behavior at room temperature is observed and exchange interactions stemming from oxygen vacancy produce BMP and subject to RTFM in ZnO.

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Optical, structural and electrical properties of ZnO thin films doped with Mn

Cited by 41 publications

References 41 publications

Optical and Photocatalytic Properties of CuxS/ZnO Composite Thin Films Deposited by Robotic Spray Pyrolysis Deposition

Optical and Photocatalytic Properties of CuxS/ZnO Composite Thin Films Deposited by Robotic Spray Pyrolysis Deposition

Termal Buharlaştırma ile Üretilen Cu2-xSe İnce Filmlerin Yapısal, Morfolojik ve Optik Özellikleri Üzerine Araştırma

Structural, Morphological, Optical, Luminescent and Magnetic Properties of Nanostructured ZnO Thin Film

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Optical, structural and electrical properties of ZnO thin films doped with Mn

Cited by 41 publications

References 41 publications

Optical and Photocatalytic Properties of CuxS/ZnO Composite Thin Films Deposited by Robotic Spray Pyrolysis Deposition

Optical and Photocatalytic Properties of CuxS/ZnO Composite Thin Films Deposited by Robotic Spray Pyrolysis Deposition

Termal Buharlaştırma ile Üretilen Cu2-xSe İnce Filmlerin Yapısal, Morfolojik ve Optik Özellikleri Üzerine Araştırma

Structural, Morphological, Optical, Luminescent and Magnetic Properties of Nanostructured ZnO&nbsp;Thin Film

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Structural, Morphological, Optical, Luminescent and Magnetic Properties of Nanostructured ZnO Thin Film