Structural, Optical, and Electrical Properties of Copper Oxide Films Grown by the SILAR Method with Post-Annealing

Lee, Wen-Jen; Wang, Xin-Jin

doi:10.3390/coatings11070864

Cited by 33 publications

(12 citation statements)

References 55 publications

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“…The image from the SEM analysis displayed significant interparticle porosities which allowed the passage of vapor [34]. However, the size of the synthesized material (16.7 nm) is still within the nanometer range, but with a non-homogenous structure [35], while the film thickness was calculated to be 106.4 nm similar to previous studies of Lai et al [36], Shariffudin et al [37], and Lee & Wang [38]. From the SEM micrograph, it is obvious that the synthesized CuO was majorly composed of spherical agglomerates of CuO nanoparticles [39].…”

Section: Scanning Electron Microscope (Sem) Analysissupporting

confidence: 80%

Biosynthesis and Fabrication of Copper Oxide Thin Films as a P-Type Semiconductor for Solar Cell Applications

et al. 2021

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This study aimed to synthesize copper oxide (CuO) thin films using an eco-friendly green synthetic approach. A sol-gel spin coating technique was employed for the synthesis of the CuO thin film using Allium cepa as a reducing agent. The fabricated CuO thin film was investigated using the Fourier Transform-Infrared (FTIR) spectroscopy, Ultraviolet-visible spectra studies (UV-Vis), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), and the Four-Point Probe measurement. The SEM micrographs revealed that the particles were spherically shaped, while the EDX analysis revealed that the CuO thin film was composed of copper and oxygen elements. Furthermore, the XRD analysis confirmed the monoclinic crystalline structure of the CuO thin film, while the FTIR spectroscopy investigated the chemical bonds formed during the production process. Contrarily, the UV-Vis spectroscopy reported a strong absorption of the film at the visible spectra with an estimated optical energy band gap of 1.48 eV. The electrical analysis, however, disclosed that the synthesized thin film portrayed good semiconducting behaviors.

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Section: Scanning Electron Microscope (Sem) Analysissupporting

confidence: 80%

Biosynthesis and Fabrication of Copper Oxide Thin Films as a P-Type Semiconductor for Solar Cell Applications

et al. 2021

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“…The films involve CuO of monoclinic crystalline structures with lattice parameters a = 4.6833 Ǻ, b = 3.4208 Ǻ, c = 5.1294 Ǻ, and β = 99.567 • , according to the JCPDS cards [27]. The presence of CuO, as a predominant phase, is due to the film pre-annealing under air, which is known to convert Cu 2 O into CuO, as reported earlier [28]. Both signals at 2θ = 35.685 • and 38.862 • were assigned to (002) and (111) reflections of the monoclinic CuO phase, respectively.…”

Section: Structural Propertiessupporting

confidence: 53%

“…The signal at 2θ = 48 • refers to the (202) reflection in CuO (JCPDS card no. 48-1548) and [28]. No secondary phases due to SnO 2 or other Sn species can be observed, which indicates the incorporation of the dopant into the crystal lattice of CuO in a substitutional manner.…”

Section: Structural Propertiesmentioning

confidence: 94%

“…The crystallite size (D), the lattice parameter c, the conductivity (σ), the thickness (e), the root mean square (RMS), and the band gap (Eg) of CuO thin films with 5 layers at various doping concentrations. The average crystallite size (D) of the films obtained was evaluated from half-height width (FWHM) (measured at 2θ angle) of the diffraction pattern using the Debye Scherrer's formula [28] as shown in Equation ( 4):…”

Section: Dopingmentioning

confidence: 99%

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Multi-Layered Sol–Gel Spin-Coated CuO Nanofilm Characteristic Enhancement by Sn Doping Concentration

et al. 2022

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CuO films, with their many features, attract special attention for applications in various optoelectronics. In their pristine form, CuO films suffer from low conductivity, which limits their application. Modification, especially by doping, is thus needed. The effects of tin (Sn) doping on the structure, morphology, and optical and, more importantly, electrical properties of multi-layered copper oxide (CuO) films deposited onto tin-doped indium oxide (ITO)/glass substrates by sol–gel spin coating are examined here. The multi-layered films were characterized with X-ray diffraction (XRD), atomic force microscopy (AFM), electronic absorption (UV-Visible) spectra, and four probe methods. The results confirmed the substitution of Cu2+ ions by Sn4+ ions in the CuO crystallites without altering their monoclinic structure. The measured crystallite size values decreased with increased doping concentration, indicating increased imperfection. This applies to both 5- and 10-layered CuO films. The doping concentration affected other film characteristics, namely, surface morphology and electrical conductivity, in each layered film. Among various systems, the 10-layered film, with 1.5 at% Sn, exhibited optimal properties in terms of higher uniformity (mean square root surface roughness 41 nm) and higher conductivity (50.3 × 10−3·Ω−1·cm−1).

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“…Generally, these deposition methods could be divided into physical method and chemical techniques. Researchers highlighted that the chemical deposition method has many advantages such as inexpensive, and convenient for large area deposition [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Recent Developments on the Properties of Chalcogenide Thin Films

Soonmin¹,

Paulraj²,

Kumar³

et al. 2022

Chalcogenides - Preparation and Applications

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Chalcogenide thin films have attracted a great deal of attention for decades because of their unique properties. The recent developments on thin film-based supercapacitor applications were reported. As a result of sustained efforts, the experimental findings revealed remarkable properties with enhanced fabrication methods. The properties of perovskite solar cells were discussed in terms of crystal structure and phase transition, electronic structure, optical properties, and electrical properties. Perovskite solar cell has gained attention due to its high absorption coefficient with a sharp absorption edge, high photoluminescence quantum yield, long charge carrier diffusion lengths, large mobility, high defect tolerance, and low surface recombination velocity. The thin film-based gas sensors are used for equally the identification and quantification of gases, and hence should be both selective and sensitive to a required target gas in a mixture of gases. Metal chalcogenide materials are considered excellent absorber materials in photovoltaic cell applications. These materials exhibited excellent absorption coefficient and suitable band gap value to absorb the maximum number of photons from sun radiation. The photovoltaic parameters were strongly dependent on various experimental conditions.

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Structural, Optical, and Electrical Properties of Copper Oxide Films Grown by the SILAR Method with Post-Annealing

Cited by 33 publications

References 55 publications

Biosynthesis and Fabrication of Copper Oxide Thin Films as a P-Type Semiconductor for Solar Cell Applications

Biosynthesis and Fabrication of Copper Oxide Thin Films as a P-Type Semiconductor for Solar Cell Applications

Multi-Layered Sol–Gel Spin-Coated CuO Nanofilm Characteristic Enhancement by Sn Doping Concentration

Recent Developments on the Properties of Chalcogenide Thin Films

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