Nickel content effect on the microstructural, optical and electrical properties of p-type Mn3O4 sprayed thin films

Larbi, T.; Lakhdar, M. Haj; Amara, Abdesslem Ben Haj; Ouni, B.; Boukhachem, A.; Mater, Ali; Amlouk, M.

doi:10.1016/j.jallcom.2014.11.088

Cited by 45 publications

(25 citation statements)

References 48 publications

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“…Also, Zhao et al (2014) reported that Sn doped Mn 3 O 4 /C nanocomposites can be considered as a supercapacitor electrode with higher capacitance. Moreover, it was already shown that spinel-type Cu doped Mn 3 O 4 microcrystal can be an effective reagent for the degradation of organic contaminants in water (Larbi et al, 2015b). Lately, in our group, Larbi et al (2015b) also investigated the micro-structural evolution, the opthothermal and the electrical properties of Mn 3 O 4 thin films and they found that the band gap energy can be adjusted from 2.2 to 1.9 eV with Ni content.…”

Section: Introductionmentioning

confidence: 88%

“…Moreover, it was already shown that spinel-type Cu doped Mn 3 O 4 microcrystal can be an effective reagent for the degradation of organic contaminants in water (Larbi et al, 2015b). Lately, in our group, Larbi et al (2015b) also investigated the micro-structural evolution, the opthothermal and the electrical properties of Mn 3 O 4 thin films and they found that the band gap energy can be adjusted from 2.2 to 1.9 eV with Ni content. In addition, Hall measurements showed that Mn 3 O 4 thin films exhibit p-type conductivity and this character is reinforced with increasing Ni concentration (Zhi et al, 2000).…”

Section: Introductionmentioning

confidence: 88%

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Electric Conduction Mechanisms Study within Zr Doped Mn₃O₄ Hausmannite Thin Films through an Oxidation Process in Air

Saïd

Boughalmi

Inoubli

et al. 2017

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In this work further optical and electrical investigations of pure and Zr doped Mn 3 O 4 (from 0 up to 20 at.%) thin films as a function of frequency. First, the refractive index, the extinction coefficient and the dielectric constants in terms of Zr content are reached from transmittance and reflectance data. The dispersion of the refractive index is discussed by means of Cauchy model and Wemple and DiDomenico single oscillator models. By exploiting these results, it was possible to estimate the plasma pulse ω p , the relaxation time τ and the dielectric constant ε ∞ . Second, we have performed original ac and dc conductivity studies inspired from Jonscher model and Arrhenius law. These studies helped establishing significant correlation between temperature, activation energy and Zr content. From the spectroscopy impedance analysis, we investigated the frequency relaxation phenomenon and hopping mechanisms of such thin films. Moreover, a special emphasis has been putted on the effect of the oxidation in air of hausmannite thin films to form Mn 2 O 3 ones at 350°C. This intrigue phenomenon which occurred at such temperature is discussed along with this electrical study. Finally, all results have been discussed in terms of the thermal activation energies which were determined with two methods for both undoped and Zr doped Mn 3 O 4 thin films in two temperature ranges.

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Section: Introductionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 88%

Electric Conduction Mechanisms Study within Zr Doped Mn₃O₄ Hausmannite Thin Films through an Oxidation Process in Air

Saïd

Boughalmi

Inoubli

et al. 2017

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“…While a and b axes did not change considerably, c axis lattice parameters decreased with increasing Ni‐doping ratio, resulting in decrease of unit cell volume. The lattice distortion for Mn 3 O 4 NPs was in agreement with previous study on Mn 3 O 4 doped with various transition metal elements . It was attributed that Ni(II) (0.69 Å) and Ni(III) (0.74 Å) with smaller ionic radius were substituted for Mn(II) (0.80 Å) and Mn(III) (0.79 Å) sites for Mn 3 O 4 structure .…”

Section: Lattice Constants and Unit Cell Volume Calculated From Xrd Pmentioning

confidence: 99%

Nickel‐Doping Effect on Mn₃O₄ Nanoparticles for Electrochemical Water Oxidation under Neutral Condition

et al. 2020

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As the demand for energy has dramatically increased in the past decade, electrochemical water splitting has been regarded as an attractive approach to produce renewable hydrogen energy. However, large overpotentials of oxygen‐evolving reaction (OER) is a key bottleneck for practical application. Thus, water‐oxidizing electrocatalysts with low cost and high efficiency should be developed. Here, 5 nm‐sized Mn3O4 nanoparticles (NPs) are synthesized by a hydrothermal method, which is appropriate for large‐scale production. To further improve their performance, various 3d transition metal elements are successfully doped in Mn3O4 NPs. Ni‐doped Mn3O4 NPs exhibit the highest efficiency among the Mn3O4 NPs doped with various elements. Based on structural analysis, the Ni‐doping process leads to the lattice distortion of their tetragonal spinel structure and it strongly correlates with the enhancement of OER activity. The overpotential at the current density of 10 mA cm–2 is 524 and 458 mV for pristine and 5 at% doped Mn3O4 NPs under neutral condition. The heteroatom‐doping process in sub‐10 nm‐sized nanocatalysts is expected to be a promising methodology to induce distorted structure related to active species. Thus, it can be effective to improve catalytic performance of various heterogeneous nano‐catalysts.

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“…The electrical conductivity characterization and optimization in oxide thin films and nanostructures is an important step for application in electronics and optoelectronics [6]. It is widely believed that the possible causes of the often observed conductivity in the oxides are due to oxygen vacancies, cation interstitial or to the incorporation of impurities [7,8]. In recent years, attention has been paid to the study disordered systems because of the unusual temperature dependence of their conductivity [9].…”

Section: Introductionmentioning

confidence: 99%

Structural, dielectric and a.c. conductivity study of Sb2O3 thin film obtained by thermal oxidation of Sb2S3

et al. 2016

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This work highlights some physical properties of Sb 2 O 3 thin films obtained through heat treatment of Sb 2 S 3 thin films under an atmospheric pressure at 400 • C. The obtained material is characterized by X-ray diffraction and impedance spectroscopy. X-ray diffraction analysis shows that Sb 2 O 3 thin films were crystallized in cubic structure having a preferential growth along (222) plane. The grain size is found to be around 65 nm. The electrical conductivity was studied using impedance spectroscopy technique in the frequency range from 5 Hz to 13 MHz at temperatures lying in 638-698 K domain. Besides, the frequency and temperature dependence of the complex impedance, a.c. conductivity and complex electric modulus have been investigated.

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Nickel content effect on the microstructural, optical and electrical properties of p-type Mn3O4 sprayed thin films

Cited by 45 publications

References 48 publications

Electric Conduction Mechanisms Study within Zr Doped Mn₃O₄ Hausmannite Thin Films through an Oxidation Process in Air

Electric Conduction Mechanisms Study within Zr Doped Mn₃O₄ Hausmannite Thin Films through an Oxidation Process in Air

Nickel‐Doping Effect on Mn₃O₄ Nanoparticles for Electrochemical Water Oxidation under Neutral Condition

Structural, dielectric and a.c. conductivity study of Sb2O3 thin film obtained by thermal oxidation of Sb2S3

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Nickel content effect on the microstructural, optical and electrical properties of p-type Mn3O4 sprayed thin films

Cited by 45 publications

References 48 publications

Electric Conduction Mechanisms Study within Zr Doped Mn3O4 Hausmannite Thin Films through an Oxidation Process in Air

Electric Conduction Mechanisms Study within Zr Doped Mn3O4 Hausmannite Thin Films through an Oxidation Process in Air

Nickel‐Doping Effect on Mn3O4 Nanoparticles for Electrochemical Water Oxidation under Neutral Condition

Structural, dielectric and a.c. conductivity study of Sb2O3 thin film obtained by thermal oxidation of Sb2S3

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Electric Conduction Mechanisms Study within Zr Doped Mn₃O₄ Hausmannite Thin Films through an Oxidation Process in Air

Electric Conduction Mechanisms Study within Zr Doped Mn₃O₄ Hausmannite Thin Films through an Oxidation Process in Air

Nickel‐Doping Effect on Mn₃O₄ Nanoparticles for Electrochemical Water Oxidation under Neutral Condition