Properties of cobalt-doped zinc oxide thin films grown by pulsed laser deposition on glass substrates

Taabouche, Adel; Bouabellou, A.; Kermiche, Fouad; Hanini, Faouzi; Bouachiba, Yassine; Grid, Azzeddine; Kerdjac, Tahar

doi:10.1016/j.mssp.2014.05.024

Cited by 28 publications

(13 citation statements)

References 31 publications

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“…Based on direct allowed transition type, the optical bandgap of all samples is estimated using Tauc's equation (Equation ) ;

italicαhν = A {(hν - E_{normalg})}^{1 / 2}

where α is the absorption coefficient, A is the absorbance of the sample, E g is the optical bandgap, h is the Planck constant, and v is reciprocal of the wavelength. The absorption coefficient ( α ) depends on the absorbance ( A ) and is given by Equation :

α = ((), \frac{2,303}{d}) A

…”

Section: Resultsmentioning

confidence: 99%

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Effect of plasmonic au nanoparticles on the photoactivity of polyaniline/indium tin oxide electrodes for water splitting

Rabia

Abukhadra

Ahmed

et al. 2019

Env Prog and Sustain Energy

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Three nanomaterials based on polyaniline (PANI) are prepared on indium tin oxide (ITO) and applied as electrodes for H2 generation due to the water‐splitting process. PANI/ITO films are prepared using oxidation polymerization method at 25°C, then coated with Au nanoparticles with different thicknesses (sputter time from 1 to 2 min). The three prepared electrodes; PANI/ITO (Electrode (0), 1‐min‐Au/PANI/ITO (Electrode (I)), and 2‐min‐Au/PANI/ITO (Electrode (II)) are compared for H2 generation from H2O. Scanning electron microscope, X‐ray diffraction, UV‐Vis spectrophotometer, and Fourier‐transform infrared spectroscopy analyses have been carried out, in which the average PANI crystal size was ~20 nm. Moreover, the bandgaps were determined, in which 2‐min‐Au/PANI/ITO has the optimum bandgap of 2.25 eV. The characteristic behavior of the H2 generation took place depending on the current density (Jph) value by using Jph–V and Jph–time study. Also, the incident photon‐to‐current conversion efficiency (IPCE) and the applied bias photon‐to‐current efficiency (ABPE) were calculated for the Electrode (II) at 25°C. The optimum IPCE and ABPE efficiency were 18.7 and 0.99%, respectively, at 390 nm. By increasing the temperature to 70°C, the IPCE efficiency increases to about 37%. Finally, activation energy (Ea), enthalpy (ΔH*), and entropy (ΔS*) were determined, in which the values were 24.32 kJ mol−1, 10.90 kJ mol−1, and 74.99 J K−1 mol−1, respectively. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019

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“…Based on direct allowed transition type, the optical bandgap of all samples is estimated using Tauc's equation (Equation ) ;

italicαhν = A {(hν - E_{normalg})}^{1 / 2}

α = ((), \frac{2,303}{d}) A

…”

Section: Resultsmentioning

confidence: 99%

“…Based on direct allowed transition type, the optical bandgap of all samples is estimated using Tauc's equation (Equation 1) [48,49];…”

Section: Characterization Of the Prepared Filmsmentioning

confidence: 99%

Effect of plasmonic au nanoparticles on the photoactivity of polyaniline/indium tin oxide electrodes for water splitting

Rabia

Abukhadra

Ahmed

et al. 2019

Env Prog and Sustain Energy

View full text Add to dashboard Cite

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“…ZnO nanostructures have been extensively investigated owing to their remarkable physical and chemical properties that can be exploited in various electronic devices and optoelectronic devices. ZnO nanostructures with various geometrical morphologies have been developed using various synthetic methods, such as chemical vapor deposition [9], the hydrothermal method [10], pulsed laser deposition [11], and furnace and electrochemical deposition [12][13]. Various 1-D ZnO nanostructures, such as nanopins [14], nanorods [15], nanotubes and nanowires [16][17], as well as 2-D ZnO nanosheets [18], nanodiscs and nanoplates [19][20], have been fabricated.…”

Section: Introductionmentioning

confidence: 99%

Field emission properties of ZnO nanosheets grown on a Si substrate

Young

Lai

2015

Microelectronic Engineering

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“…Transparent conducting oxide (TCO) films based on zinc oxide (ZnO) are one of the most credible candidates for spintronics, light emitting and laser diodes, solar energy conversion, storage device, paint coatings, and antibiotic. This is owing to that ZnO has a broadband gap (3.3 eV), a large exciton binding energy (60 meV), its abundance, eco-friendliness and other distinctive properties 4 5 . ZnO films have thermal diffusivity in the range (4.35–5.03) × 10 −2 cm 2 /s and electrical resistivity varying from 10 −4 to 10 12 Ω.cm 6 .…”

mentioning

confidence: 99%

Enhanced Gas Sensing Properties of Spin-coated Na-doped ZnO Nanostructured Films

Basyooni

Shaban

Sayed

2017

Sci Rep

169

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In this report, the structures, morphologies, optical, electrical and gas sensing properties of ZnO and ZnO: Na spin-coated films are studied. X-ray diffraction (XRD) results reveal that the films are of a single phase wurtzite ZnO with a preferential orientation along (002) direction parallel to c-axis. Na doping reduces the crystalline quality of the films. The plane surface of ZnO film turned to be wrinkle net-work structure after doping. The reflectance and the optical band gap of the ZnO film decreased after Na doping. The wrinkle net-work nanostructured Na-doped film shows an unusually sensitivity, 81.9% @ 50 sccm, for CO2 gas at room temperature compared to 1.0% for the pure ZnO film. The signals to noise ratio (SNR) and detection limit of Na-doped ZnO sensor are 0.24 and 0.42 sccm, respectively. These enhanced sensing properties are ascribed to high surface-to-volume ratio, hoping effect, and the increase of O- vacancies density according to Kroger VinK effect. The response time increased from 179 to 240 s by the incorporation of Na atoms @50 sccm. This response time increased as the CO2 concentration increased. The recovery time is increased from 122 to 472 s by the incorporation of Na atoms @50 sccm.

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Properties of cobalt-doped zinc oxide thin films grown by pulsed laser deposition on glass substrates

Cited by 28 publications

References 31 publications

Effect of plasmonic au nanoparticles on the photoactivity of polyaniline/indium tin oxide electrodes for water splitting

Effect of plasmonic au nanoparticles on the photoactivity of polyaniline/indium tin oxide electrodes for water splitting

Field emission properties of ZnO nanosheets grown on a Si substrate

Enhanced Gas Sensing Properties of Spin-coated Na-doped ZnO Nanostructured Films

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