Effect of europium content on physical properties of In2O3 thin films for sensitivity and optoelectronic applications

Kamoun, Olfa; Boukhachem, A.; Mrabet, C.; Yumak, A.; Petkova, P.; Boubaker, K.; Amlouk, M.

doi:10.1007/s12034-016-1203-1

Cited by 16 publications

(3 citation statements)

References 66 publications

(87 reference statements)

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“…The best crystallinity is obtained for MoO 3 : Fe 2%-Co 1% with preferentially orientation along (020) direction. The effect of Fe-Co dopants on the MoO 3 crystal lattice can be further analyzed by studying the crystallite size ( D ), the stress ξ and dislocation density δ dis [35,37,38,39,40] with doping, according to the following equations:D=kλβ1/2cosθ ξ=βcosθ4 δdis=1D2 where k is the Scherrer constant ( k = 0.90), β 1/2 is the half width of the peak (corrected value). Table 3 presents the values obtained D , ξ and δ dis along (020) calculated using Equations (4)–(6).…”

Section: Structural Investigationmentioning

confidence: 99%

Nanostructured Fe,Co-Codoped MoO3 Thin Films

et al. 2019

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Molybdenum oxide (MoO3) and Fe,Co-codoped MoO3 thin films obtained by spray pyrolysis have been in-depth investigated to understand the effect of Co and Fe codoping on MoO3 thin films. The effect of Fe and Co on the structural, morphological and optical properties of MoO3 thin films have been studied using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy-dispersive X-ray analysis (EDAX), optical and photoluminescence (PL) spectroscopy, and electropyroelectric methods. The XRD patterns demonstrated the formation of orthorhombic α-MoO3 by spray pyrolysis. SEM characterization has shown an increase in roughness of MoO3 thin films by Fe and Co doping. Optical reflectance and transmittance measurements have shown an increase in optical band gap with the increase in Fe and Co contents. Thermal conductivity and thermal diffusivity of Fe,Co-doped MoO3 were 24.10–25.86 Wm−1K−1 and 3.80 × 10−6–5.15 × 10−6 m2s−1, respectively. MoO3 thin films have shown PL emission. Doping MoO3 with Fe and Co increases emission in the visible range due to an increase number of chemisorbed oxygen atoms. The photodegradation of an aqueous solution of methylene blue (MB) depended on the content of the codoping elements (Fe,Co). The results showed that a degradation efficiency of 90% was observed after 60 min for MoO3: Fe 2%-Co 1%, while the degradation efficiency was about 35% for the undoped MoO3 thin film.

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Section: Structural Investigationmentioning

confidence: 99%

Nanostructured Fe,Co-Codoped MoO3 Thin Films

et al. 2019

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“…The crystallite size can be estimated from the full width half maximum (FWHM) values obtained from the predominant (210) for MoO 3 and MoO 3 @SiO 2 diffraction peak at 2θ = 25.7 • according to the following Debye-Sherrer equation [30][31][32]:…”

Section: Structural Propertiesmentioning

confidence: 99%

An Investigation on the Synthesis of Molybdenum Oxide and Its Silica Nanoparticle Composites for Dye Degradation

Kamoun

Gassoumi

Kouass³

et al. 2020

Nanomaterials

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The molybdenum oxide (MoO3) and MoO3@SiO2 nanoparticles were successfully prepared using the chemical bath deposition (CBD) method. The photocatalytic activities of molybdenum oxide (MoO3), SiO2, and MoO3@SiO2 nanoparticles composite have shown a synergistic photocatalytic effect of SiO2 combined with MoO3. The first-order degradation rate constants for MoO3, SiO2, and MoO3@SiO2 nanocomposite were 10.3 × 10−3 min−1, 15.1 × 10−3 min−1, and 16.3 × 10−3 min−1, respectively. The MoO3@SiO2 composite showed degradation efficiencies in the methylene blue solution close to 100% after 60 min of UV irradiation. The X-ray diffraction (XRD) showed that the MoO3 powder has a hexagonal crystal structure and the silica is the tridymite type of SiO2. The crystallite size was about 94 nm, 32 nm, and 125 nm for MoO3, silica, and MoO3@SiO2, respectively, as calculated by the Scherrer equation. The scanning electron microscopy (SEM) images revealed that the MoO3 powder consisted of a uniform hexagonal structure; the silica showed a rod-like micro-flake morphology and the MoO3@SiO2 composite had the appearance of coral-like structures.

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“…[1][2][3]. Among these, indium oxide (In2O3) and indium oxide based thin films have great technological applications owing to their various fascinating aspects including high visible transparency, good electrical conductivity, long-term stability and higher catalytic properties [4][5][6]. Apart from their widespread applications in electrooptic modulators, low-emissivity windows, solar cells, flat-panel displays, gas sensors, electrochromic mirrors etc.…”

Section: Introductionmentioning

confidence: 99%

Effect of Tungsten Doping on the Properties of In2O3 Films

Krishnan

Kavitha

Chalana

et al. 2019

JOM

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Highly crystalline tungsten doped indium oxide (In2O3) films are synthesized at room temperature by RF magnetron sputtering technique. The structural and morphological properties of the as-deposited films and the films annealed at a temperature of 300°C are investigated in detail. XRD analysis reveals the presence of cubic bixbyite structure with preferred orientation along (222) plane for both the as-deposited and annealed films. Moderate tungsten doping (1 wt%) enhances the crystallinity of the as-deposited In2O3 films whereas the crystallinity of the films systematically decreases with increase in tungsten doping concentration beyond 1 wt%. Raman spectral analysis discloses the modes of cubic bixbyite In2O3 phase in the films. AFM micrographs show a smooth and dense distribution of smaller grains in the films. XPS reveals the existence of W 5+ in the doped films. The undoped film is highly oxygen deficient. Variation in the concentration of oxygen vacancy can be associated with the degree of crystallinity of the films.

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Effect of europium content on physical properties of In2O3 thin films for sensitivity and optoelectronic applications

Cited by 16 publications

References 66 publications

Nanostructured Fe,Co-Codoped MoO3 Thin Films

Nanostructured Fe,Co-Codoped MoO3 Thin Films

An Investigation on the Synthesis of Molybdenum Oxide and Its Silica Nanoparticle Composites for Dye Degradation

Effect of Tungsten Doping on the Properties of In2O3 Films

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