Frequency and temperature dependent electrical properties of ZnO–SnO2 nanocomposites

Zankat, Alpa; Gadani, Keval; Vadgama, V.S.; Udeshi, Bhagyashree; Gal, Manan; Solanki, Sapana; Vaishnani, Ajay; Shrimali, V.G.; Solanki, P.S.; Shah, N.A.; Pandya, D.D.

doi:10.1016/j.physb.2021.413140

Cited by 14 publications

(7 citation statements)

References 52 publications

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“…Both oxide components of the nanocomposite system were employed to analyse average crystallite size independently using Scherrer's method presented in equation (1), which revealed that TiO 2 has a larger crystallite size than SnO 2 (TiO 2 = ∼26 nm and SnO 2 = ∼22 nm). This data indicates that, as compared to SnO 2 , TiO 2 has a higher crystallite boundary.…”

Section: Resultsmentioning

confidence: 99%

“…It clearly demonstrates that the grain boundaries of the SN00 thin film include significant flaws, abnormalities, or oxygen vacancies. Table 2 shows the morphological parameters show variations in SN25 and SN00 thin films [1].…”

Section: Dislocation Density D Linesmentioning

confidence: 99%

“…When an electric field is applied, space charges are moved and dipole moments are formed, which are referred to as SCP [46]. Zankat et al [1] also report the decrement in the dielectric constant of ZnO: SnO 2 composite with SnO 2 content. At room temperature, the frequency dependence of dielectric loss is shown in figure 7(b), and the losses are inversely proportional to the frequency of the applied field.…”

Section: Conductivitymentioning

confidence: 99%

“…In the rapidly expanding field of science and technology, oxide materials have been intensively studied in many forms, such as thin-film, polycrystalline particle form, nanomaterial, and composite [1]. The fabrications of composite thin films and their chemical, optoelectronic, and dielectric-magnetic properties have received considerable attention in recent years [2].…”

Section: Introductionmentioning

confidence: 99%

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Structural, optical, and dielectric characteristics of pulsed laser deposited SnO₂-TiO₂ composite thin films

et al. 2023

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Pulsed laser deposition was used to fabricate the thin films of SnO2 and SnO2-TiO2 composites on FTO substrates and these films were characterized to understand the effect of TiO2 on the structural, optical, and electrical properties of SnO2. The crystalline nature, phase purity, and optical bandgap were determined using X-ray diffraction and UV-Vis measurements, respectively. The Tauc plots confirm that the composite films have a higher band gap energy than SnO2. EDX spectra demonstrate that the thin films contain Ti, Sn, and O ions. The photoluminescence (PL) spectra indicate three blue emission bands at wavelengths of 410, 435, and 460 nm and these are due to the oxygen vacancies or interstitial oxygen ions and defect related states formed during the thin-film deposition of SnO2 and composites. These films are n-type semiconductors as verified by the Hall Effect measurements. At the interface of the film, the frequency dependence of the dielectric at room temperature reveals that as the frequency increases, the dielectric constant and dielectric losses decrease. SnO2 film has a significantly higher a.c. conductivity than the SnO2-TiO2 composite films. The correlated barrier hopping (CBH) mechanism is responsible for the conduction behaviour and obeys Johncher's power law (n<1). Both films exhibit a frequency-dependent increase in impedance. The addition of TiO2 in SnO2 affects the structural, optical, dielectric, and ac conductivity of films at room temperature. These optical and n-type semiconducting nature supports the potential application in microelectronics, optoelectronics, and sensor applications.

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Section: Resultsmentioning

confidence: 99%

Section: Dislocation Density D Linesmentioning

confidence: 99%

Section: Conductivitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural, optical, and dielectric characteristics of pulsed laser deposited SnO₂-TiO₂ composite thin films

et al. 2023

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“…Further, the present values of electrical conductivity of the SnO2-ZnO composite are higher than their individual entities as reported widely. [30,31]…”

Section: Discussionmentioning

confidence: 99%

Influence of reducing agents in nanoparticle synthesis: SnO₂‐ZnO composite anode

Lakshmi

Diana

Manoj

et al. 2022

Applied Organom Chemis

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The present research work is dedicated to understand the effect of synthesis medium on the nanocomposite anode, SnO 2 : ZnO, and their synergistic effects towards Li-ion battery applications. Alkaline and acidic media as reducing agents such as NaOH, LiOH, and NaBH 4 are chosen for the preparation of the composite, and the results are surprisingly varying. Structural analysis by means of X-ray diffraction shows the mixed crystal symmetry inclusive of SnO 2 and ZnO phases for all the three systems with varying ranges of each phases. The average crystallite sizes are around 20-39 nm for all the three samples. Morphological analysis of SnO 2 : ZnO anode by means of transmission electron microscopy indicates mixed shapes of grains for the samples synthesized by NaOH and LiOH, whereas reducing agent, NaBH 4 , falls into the spherical shape predominantly. Raman and selected area electron diffraction analyses validate the mixed crystal symmetry of all the three samples. Electrochemical performance of the samples is promising where NaBH 4 mediated anode delivers reversible capacity around 225 m Ahg À1 exclusively. In the aspect of electrical conductivity, almost all the three samples employed with three different reducing agents fall in the range of $10 À4 S cm À1 at room temperature, validating the choice of the material as anode in Li-ion battery technology.

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Effect of Cu2+ substitution on structural, electrical and dielectric properties of bismuth vanadate by impedance spectroscopic studies

et al. 2022

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Frequency and temperature dependent electrical properties of ZnO–SnO2 nanocomposites

Cited by 14 publications

References 52 publications

Structural, optical, and dielectric characteristics of pulsed laser deposited SnO₂-TiO₂ composite thin films

Structural, optical, and dielectric characteristics of pulsed laser deposited SnO₂-TiO₂ composite thin films

Influence of reducing agents in nanoparticle synthesis: SnO₂‐ZnO composite anode

Effect of Cu2+ substitution on structural, electrical and dielectric properties of bismuth vanadate by impedance spectroscopic studies

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Frequency and temperature dependent electrical properties of ZnO–SnO2 nanocomposites

Cited by 14 publications

References 52 publications

Structural, optical, and dielectric characteristics of pulsed laser deposited SnO2-TiO2 composite thin films

Structural, optical, and dielectric characteristics of pulsed laser deposited SnO2-TiO2 composite thin films

Influence of reducing agents in nanoparticle synthesis: SnO2‐ZnO composite anode

Effect of Cu2+ substitution on structural, electrical and dielectric properties of bismuth vanadate by impedance spectroscopic studies

Contact Info

Product

Resources

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Structural, optical, and dielectric characteristics of pulsed laser deposited SnO₂-TiO₂ composite thin films

Structural, optical, and dielectric characteristics of pulsed laser deposited SnO₂-TiO₂ composite thin films

Influence of reducing agents in nanoparticle synthesis: SnO₂‐ZnO composite anode