Enhancing the electrical and dielectric properties of ZnO nanoparticles through Fe doping for electric storage applications

Saadi, H.; Benzarti, Z.; Rhouma, F.I.H.; Sanguino, P.; Guermazi, S.; Khirouni, K.; Vieira, M. Teresa

doi:10.1007/s10854-020-04923-1

Cited by 31 publications

(17 citation statements)

References 54 publications

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“…This decline in particle size may be attributed to the limited growth of the nanocrystals, resulting from the existence of dopant ions in the reaction medium. 25 The lattice distortion and the defect induced by La 3+ and Nb 5+ in the A-and B-sites, respectively, are accountable for this diminution, which is a trend consistent with the crystallite size's evolution as obtained by XRD analysis. It is found that the grains are nonhomogeneously and uniformly distributed over the entire surface of the samples.…”

Section: Morphological Temsupporting

confidence: 79%

Structural and morphological studies, and temperature/frequency dependence of electrical conductivity of Ba_0.97La_0.02Ti_1−xNb_4x/5O₃ perovskite ceramics

et al. 2021

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Section: Morphological Temsupporting

confidence: 79%

Structural and morphological studies, and temperature/frequency dependence of electrical conductivity of Ba_0.97La_0.02Ti_1−xNb_4x/5O₃ perovskite ceramics

et al. 2021

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“…64 The decrease of the Z′ and Z″ values with the enhancement in the temperature suggests the reduction of grain and grain boundary resistance. 65 Again, the shift of Z′ toward the lower frequency with an increase in the temperature also confirms the frequency relaxation process in sample. 66 3.7.3.…”

Section: Optical Studysupporting

confidence: 60%

A Facile Microwave-Assisted Nanoflower-to-Nanosphere Morphology Tuning of CuSe_1–xTe_1+x for Optoelectronic and Dielectric Applications

Das¹,

Senapati²,

Pradhan

et al. 2023

ACS Appl. Nano Mater.

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Transition metal chalcogenides have gained significant attention for their optoelectronic and electrical applications in various fields due to their elemental composition-dependent tunable properties. Here, a facile microwave-assisted approach was used to synthesize different CuSe1–x Te1+x -based nanomaterials. By varying the Se and Te concentrations, the morphology of CuSe1–x Te1+x was tuned from nanosheet-based flowers to nanospheres. With the increase in the value of the Te-to-Se content ratio, the material shows the transition from mixed nanosheets/nanospheres to pure nanospheres, where the average sheet thickness and sphere diameter are ∼25 and 80 nm, respectively. The as-synthesized material shows high crystallinity with mixed phases of hexagonal Cu2Te and CuSe. The chemical bonding of the material exhibits shifts of the spectra toward lower binding energies with the decrease in the Se-to-Te ratio. The material exhibits a change in the absorption edge with a blue shift of the optical bandgap for the increase of the Te content. The increment in the absorption makes them eligible for solar cell application. The photoluminescence spectra of different CuSeTe samples show broad emission in the 550–950 nm range with a peak at ∼700 nm. Such optical properties enable CuSeTe materials for possible applications in optoelectronic devices. The dielectric measurement of the sample exhibits an increase in the dielectric constant and loss with temperature, whereas a decrease in both the values is apparent for increase in the frequency. The dielectric study of the material reveals its potential application for energy storage. The photo-response study demonstrated that the material can be employed for photodetector application.

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“…Soliman et al studied optical properties and dielectric response for Polyvinyl Alcohol/ZnO Nanocomposite systems with two different frequencies 100 Hz and 10 kHz [21]. Recently, dielectric properties of different metal doped ZnO NPs and polymer-ZnO NPs composites are studied by different researchers [22][23][24][25][26]. We also previously reported about the temperature dependent some electrical parameters of ZnO NPs [27].…”

Section: Different Researchers Like Baset Et Al Mazhdi Et Al El-desoky Et Al Studied Dielectric Properties Of Znomentioning

confidence: 99%

Study of the optical properties and frequency-dependent electrical modulus spectrum to the analysis of electric relaxation and conductivity effect in zinc oxide nanoparticles

Bhunia¹,

Pradhan

Bhunia

et al. 2021

J Mater Sci: Mater Electron

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In this article, the optical and dielectric properties along with electric relaxation behaviour of the zinc oxide nanoparticles (ZnO NPs) with an average size & 32.5 nm were studied. The band gap, and free carrier concentration of the ZnO NPs have been found to be 3.73 eV, and & 5.55 9 10 12 per cm 3 , respectively. Dispersion parameters and nature of dispersion have been studied from optical spectrum. X-ray diffraction investigation revealed that the crystalline phase is hexagonal with atomic fraction & 75.44%. The overall behaviour of the dielectric constants of ZnO NPs has obeyed Koops model. Relaxation behaviour and defect state response inside ZnO NPs have been observed in the dielectric studies. The relaxation time varies from 8.0585 9 10 -5 to 7.8447 9 10 -5 s with temperature (T) ranges from 323 to 573 K, respectively, calculated from the electric modulus study. The AC conductivity complies the Jonscher's universal power law and the observed hopping of electron is the correlated barrier hopping. The activation energy of the ZnO NPs is found to be & 93 meV from the temperature-dependent DC conductivity analysis. The real part of complex impedance showed a negative temperature coefficient of resistance nature with increase the temperature from 473 to 673 K in the low-frequency zone. The equivalent circuit for the complex impedance analysis at T = 673 K has been studied from Cole-Cole equation and Nyquist plot. The observed properties of ZnO NPs are very important for electric storage, sensing and optical semiconductor devices.

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Enhancing the electrical and dielectric properties of ZnO nanoparticles through Fe doping for electric storage applications

Cited by 31 publications

References 54 publications

Structural and morphological studies, and temperature/frequency dependence of electrical conductivity of Ba_0.97La_0.02Ti_1−xNb_4x/5O₃ perovskite ceramics

Structural and morphological studies, and temperature/frequency dependence of electrical conductivity of Ba_0.97La_0.02Ti_1−xNb_4x/5O₃ perovskite ceramics

A Facile Microwave-Assisted Nanoflower-to-Nanosphere Morphology Tuning of CuSe_1–xTe_1+x for Optoelectronic and Dielectric Applications

Study of the optical properties and frequency-dependent electrical modulus spectrum to the analysis of electric relaxation and conductivity effect in zinc oxide nanoparticles

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Enhancing the electrical and dielectric properties of ZnO nanoparticles through Fe doping for electric storage applications

Cited by 31 publications

References 54 publications

Structural and morphological studies, and temperature/frequency dependence of electrical conductivity of Ba0.97La0.02Ti1−xNb4x/5O3 perovskite ceramics

Structural and morphological studies, and temperature/frequency dependence of electrical conductivity of Ba0.97La0.02Ti1−xNb4x/5O3 perovskite ceramics

A Facile Microwave-Assisted Nanoflower-to-Nanosphere Morphology Tuning of CuSe1–xTe1+x for Optoelectronic and Dielectric Applications

Study of the optical properties and frequency-dependent electrical modulus spectrum to the analysis of electric relaxation and conductivity effect in zinc oxide nanoparticles

Contact Info

Product

Resources

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Structural and morphological studies, and temperature/frequency dependence of electrical conductivity of Ba_0.97La_0.02Ti_1−xNb_4x/5O₃ perovskite ceramics

Structural and morphological studies, and temperature/frequency dependence of electrical conductivity of Ba_0.97La_0.02Ti_1−xNb_4x/5O₃ perovskite ceramics

A Facile Microwave-Assisted Nanoflower-to-Nanosphere Morphology Tuning of CuSe_1–xTe_1+x for Optoelectronic and Dielectric Applications