Investigation on dispersion parameters of Molybdenum Oxide thin films via Wemple–DiDomenico (WDD) single oscillator model

Borah, Dibya Jyoti; Mostako, A.T.T.

doi:10.1007/s00339-020-03996-3

Cited by 47 publications

(19 citation statements)

References 63 publications

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“…The observed decrease in E d values indicates the increase in the degree of structural disorder of the glasses as the ratio of Yb 3? ions increase which is in line with the Urbach energy results [52]. The observed decrease in E o values is in line with the optical bandgap results.…”

Section: Refractive Index and Dispersion Parameterssupporting

confidence: 90%

Structural and optical properties of barium titanium borate glasses doped with ytterbium

Marzouk

Azooz

Elsaghier

et al. 2022

J Mater Sci: Mater Electron

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Barium titanium borate glasses doped with ytterbium ions were fabricated via standard melt quenching technique. The building structure of the glass matrices doped with ascendant ratios of ytterbium ions were studied using Raman and FTIR spectroscopies. The UV–Vis–NIR optical absorption spectra were investigated and used to calculate optical bandgaps, Urbach energies, refractive indices, metallization criterion, optical basicity, and dispersion parameters. The absorption and emission cross-sections and gain spectra for 2F5/2 → 2F7/2 transition of ytterbium ions were investigated. The high values of the emission cross-sections of the studied glasses make them strong candidates for laser and amplifier applications.

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Section: Refractive Index and Dispersion Parameterssupporting

confidence: 90%

Structural and optical properties of barium titanium borate glasses doped with ytterbium

Marzouk

Azooz

Elsaghier

et al. 2022

J Mater Sci: Mater Electron

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“…Therefore, by changing the concentration of the metal nanoparticles and structure modification of polymer matrix, the optical properties will change [ 57 ]. In the other words, charge carriers from the continuous network inside the composite films can modify the linear and non-linear optical behavior [ 58 ]. Figure 9 c depicts the change of the non-linear refractive index against the wavelength of the pristine MC, MC/1%PANI, MC/3%PANI, MC/3%PANI/0.5AgNPs and MC/3%PANI/1AgNPs films.…”

Section: Resultsmentioning

confidence: 99%

Flexible Methyl Cellulose/Polyaniline/Silver Composite Films with Enhanced Linear and Nonlinear Optical Properties

et al. 2021

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In order to potentiate implementations in optical energy applications, flexible polymer composite films comprising methyl cellulose (MC), polyaniline (PANI) and silver nanoparticles (AgNPs) were successfully fabricated through a cast preparation method. The composite structure of the fabricated film was confirmed by X-ray diffraction and infrared spectroscopy, indicating a successful incorporation of AgNPs into the MC/PANI blend. The scanning electron microscope (SEM) images have indicated a homogenous loading and dispersion of AgNPs into the MC/PANI blend. The optical parameters such as band gap (Eg), absorption edge (Ed), number of carbon cluster (N) and Urbach energy (Eu) of pure MC polymer, MC/PANI blend and MC/PANI/Ag films were determined using the UV optical absorbance. The effects of AgNPs and PANI on MC polymer linear optical (LO) and nonlinear optical (NLO) parameters including reflection extinction coefficient, refractive index, dielectric constant, nonlinear refractive index, and nonlinear susceptibility are studied. The results showed a decrease in the band gap of MC/PANI/AgNPs compared to the pure MC film. Meanwhile, the estimated carbon cluster number enhanced with the incorporation of the AgNPs. The inclusion of AgNPs and PANI has enhanced the optical properties of the MC polymer, providing a new composite suitable for energy conversion systems, solar cells, biosensors, and nonlinear optical applications.

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“…The analysis of optical dispersion parameters is considered as a crucial component in the design of numerous electronic devices which can be utilized in a variety of application fields including telecommunications, electricity, filtration, electrical buttons, opto-electronics, photonics, and cable applications [46]. The extinction coefficient (𝑘) is imperative in optical evaluations of electromagnetic waves that have been absorbed in the medium and lost as a result of scattering.…”

Section: Optical Dispersion Parametersmentioning

confidence: 99%

Revealing the Substitution of Zn2+ on Nano-Structural, Magneto-Electrical, Antibacterial and Antifungal Attributes of Nickel Oxide Nanoparticles via Sol-Gel Strategy

Aslinjensipriya¹,

R²,

Ragu³

et al. 2022

Preprint

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Transition metal oxides have gathered momentum among the scientific community on account of their peculiar procession in physico-chemical, opto-electronic, magnetic, electrochemical, and biological attributes resulting from anisotropic charge distribution of partly filled d-orbitals, non-stoichiometric behaviour, and diverse oxidation states of the cations. The current work emphasize on the systematic synthesis and characterization of pure and zinc (Zn) incorporated nickel oxide (NiO) nanoparticles in varying concentrations ZnxNi1−xO (x = 0, 0.1, 0.2, and 0.3) via a scalable sol-gel approach assisting citric acid (C6H8O7) as a congealing factor. A series of extensive analyses were executed to investigate the structural, opto-electrical, and magnetic characteristics of prepared nanoparticles. X-Ray Diffraction (XRD) studies confirmed the face-centered cubic structure of as-synthesized samples and the corresponding crystallite size is found to decrease with an increasing dopant concentration as estimated from the Scherrer method. Scanning electron microscopy studies portrayed the spherical structure and porous nature of NiO nanoparticles. Particle size calculated from SEM shows the decreasing trend with dopant discrepancy which is in accordance with crystallite size measured from XRD results. Energy Dispersive X-ray (EDX) spectra revealed the presence of estimated molecular assembly in synthesized samples. The cubic configuration and the presence of functional groups existing in synthesized nanoparticles were endorsed from Fourier Transform Infra-Red (FTIR) spectra. The optical absorption spectrum examined from UltraViolet-visible (UV-vis) spectroscopy evaluates the energy bandgap and it is noticed to increase from 2.48 to 2.87 eV affirming the Burstein Moss shift. The energy dispersion of optical parameters plays a crucial contribution in optical materials pursuant to its prominence in optical communications and in fabricating novel devices for spectral dispersion. Optical and energy dispersion parameters evaluated from Wemple-DiDomenico (WDD) model and non-linear optical parameters were deliberated from optical studies. Urbach energy and another pivotal optical criterion highly correlated with the bandgap energy anchored in the fabrication of optoelectronic devices were assessed. The electrical characteristics such as dielectric constant, loss, and conductivity exhibited by pure and Zn doped nickel oxide nanoparticles were reported. Molecular electronic polarizability assessed through elementary solid-state parameters is in better concurrence with diverse relations like Clausius-Mossotti, Lorentz-Lorent, bulk modulus, optical electronegativity, energy band gap. The pore size distribution of substance matrix and the associated surface area were elucidated from Brunauer-Emmett-Teller (BET) analysis. Dispersive magnetic properties and two pivotal parameters were derived from the Law of Approach to Saturation (LAS) operandi. Further, microbial cell mechanism was illustrated through nano-architecture design, and the antibacterial and antifungal activity encountered by undoped and zinc doped NiO nanoparticles against different microbial strains were deeply discussed for pilot production of antimicrobial agents.

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Investigation on dispersion parameters of Molybdenum Oxide thin films via Wemple–DiDomenico (WDD) single oscillator model

Cited by 47 publications

References 63 publications

Structural and optical properties of barium titanium borate glasses doped with ytterbium

Structural and optical properties of barium titanium borate glasses doped with ytterbium

Flexible Methyl Cellulose/Polyaniline/Silver Composite Films with Enhanced Linear and Nonlinear Optical Properties

Revealing the Substitution of Zn2+ on Nano-Structural, Magneto-Electrical, Antibacterial and Antifungal Attributes of Nickel Oxide Nanoparticles via Sol-Gel Strategy

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