Optical and Solid State Properties of Manganese Sulphide (MnS) Thin Film; Theoretical Analysis

Ugwu, E. I.

doi:10.21152/1750-9548.11.2.137

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…And a close look at the concept made it clear that recognition of the importance of the effect of the refractive index of the medium and dielectric function culminated in the reality of the creation of two velocity components that normally give rise to phase and group refractive indices as considered in the study of wave propagation [12][13][14][15]. Recently more complicated work had been embarked upon on the study of wave propagation through a modeled thin with dielectric perturbation in which WKB approximation in conjunction with numerical approach were used [16][17][18] along with beam propagation technique to unravel the mechanism of theoretical analysis of wave propagation through materials and based on that, lots of work had been veraciously carried out in term of the influence of dielectric constants and refractive index on beam propagating through materials [3,5,12,17,19] in other to ascertain their roles and efficacy on the use of beam propagation method and again the effect of the refractive index of the medium in the reality of the two velocity components that normally give rise to phase and group refractive indices as generally considered when it comes to the study of wave propagation because their influence on the propagated beam [13]. This had gone a long way to add and to reveal the efficacy of the theoretical approach in understanding the beam propagation mechanism in wave propagating through thin film material.…”

Section: Introductionmentioning

confidence: 99%

“…This had gone a long way to add and to reveal the efficacy of the theoretical approach in understanding the beam propagation mechanism in wave propagating through thin film material. This is seen to be achieved due to the flexibility of Green's function as a tool because this is what facilitated the use of the iterative process that will be involved in the computational technique in this work that has enabled one to embark on this theoretical frame work [18,19].…”

Section: Introductionmentioning

confidence: 99%

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Theoretical Analysis of the Solid State and Optical Characteristics of Calcium Sulphide [CaS] Thin Film

Ifeanyi Ugwu

2024

Thin Films - Growth, Characterization and Electrochemical Applications

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The analysis of the calcium sulphide thin film material which is one of the families of chalcogenide groups of thin film materials was carried out in this work using a theoretical approach for which the propagated wave through the medium of the thin film that is deposited on a glass substrate is considered to be a scalar wave in nature. The thin film material is sectioned into twos, first section is termed homogeneous reference dielectric constant, εref where no thin film is deposited on the substrate and the second part is termed perturbed dielectric function, Δεpz containing the deposited thin film on the glass substrate. These two terms were substituted on the defined scalar wave equation that was subsequently solved using the method of separation of variable which invariably utilized in the transformation of the equation into the second type of Volterra equation. On the other hand, Green’s function approach was also introduced in order to arrive at the model equation that culminates in an expression showcasing the wave propagated through the thin film material medium. This was subsequently applied in the computation of waves, ψz that is propagating through the material medium for various wavelengths within the ultraviolet, visible, and near-infrared region of the electromagnetic wave spectrum for which the influence of the aforementioned dielectric constant and function were invoked. The computed values from this mechanism were in turn utilized in the analysis of the band gap, optical, and solid-state properties of the calcium sulphide (CaS) thin film materials.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Theoretical Analysis of the Solid State and Optical Characteristics of Calcium Sulphide [CaS] Thin Film

Ifeanyi Ugwu

2024

Thin Films - Growth, Characterization and Electrochemical Applications

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Assessment of the Annealing Effect on Varied Ligand Deposited Lead Sulphide Thin Film Grown by Chemical Bath Deposition Technique

Ifeanyi Ugwu,

Adewale Oluwatobi,

Adewale Busari

et al. 2024

Structural and Chemical Features of Chalcogenides

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The study of the influence varied concentrations of ligand and annealing of chemically bath deposited PbS thin film has been carried out the influence of ligand on the optical, solid state, morphological and Electrical properties of the deposited thin films has been investigated. The absorbance, transmittance from the UV-VIS spectrophotometer and other parameters such as absorption coefficient, reflectance, energy band gap, optical conductivity indicate that there is a effect of ligand variation on the properties and the absorption coefficient of the films was found to increase as the concentration of ligand as they annealed to the same temperature and in all case they decreases towards longer wavelength region and the energy band gap was observed to increase from 1.61 to 3.71 eV as the concentration of ligand increases. The surface morphology of the SEM micrographs result shows that the deposited thin films are of polycrystalline and the particle grains are evenly distributed across the substrate’s surface indicates that the grain sizes of the films are dependent on the molar concentration of ligand increases while the XRD showed where the preferential plane with highest diffraction intensity is located.

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Optical and Solid State Properties of Manganese Sulphide (MnS) Thin Film; Theoretical Analysis

Cited by 2 publications

References 9 publications

Theoretical Analysis of the Solid State and Optical Characteristics of Calcium Sulphide [CaS] Thin Film

Theoretical Analysis of the Solid State and Optical Characteristics of Calcium Sulphide [CaS] Thin Film

Assessment of the Annealing Effect on Varied Ligand Deposited Lead Sulphide Thin Film Grown by Chemical Bath Deposition Technique

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