Optical Properties of CdS Thin Films

Petrus, R. Yu.; Ільчук, Г. А.; Kashuba, A. I.; Semkiv, І. V.; Zmiiovska, E. O.; Honchar, F.

doi:10.1007/s10812-020-00959-7

Cited by 30 publications

(15 citation statements)

References 22 publications

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“…The obtained value of the ZnO: Al thin film thickness is 454.83 nm. The optical properties of a thin film (refractive index n(λ), absorption coefficient α(λ), extinction coefficient k(λ), dielectric functions ε(λ), optical conductivity σ(λ) and thickness d) can be easily evaluated from a transmission spectrum with interference effects using the envelope method [26][27][28][29][30][31] (Fig. 2).…”

Section: Resultsmentioning

confidence: 99%

Effect of Al doping on optical properties of ZnO thin films: theory and experiment

Kovalenko

Bovgyra

Dzikovskyi

et al. 2021

Phys. Chem. Solid St.

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The structural, electronic, and optical properties of zinc oxide thin films with Al-doping have been investigated experimentally and with density functional theory (DFT) calculations. Changes in properties of doped thin films, which are deposited on a glass substrate by a high-frequency magnetron sputtering method, are monitored using X-ray diffraction data and UV measurements. Our theoretical calculations show that the electronic structure of ZnO: Al can be well described by the DFT+U method. The XRD measurements demonstrated the formation of a pure single ZnO phase and Al atoms is well incorporated in the ZnO lattice. Also, we determine the optical constants such as optical dielectric function, refractive index, optical band gap values, extinction coefficient, and optical conductivity of the doping films through transmittance spectra. The calculated results show the change of lattice parameters Al-doped ZnO. The optical band gap of ZnO: Al is increased compared with pure ZnO. Besides, around the Fermi level of Al-doped ZnO was emerged the shallow donor states from mainly 3s-Al states. Our DFT calculations of optical properties Al-doped ZnO agree satisfactorily with the experimentally measured transmittance values.

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Section: Resultsmentioning

confidence: 99%

Effect of Al doping on optical properties of ZnO thin films: theory and experiment

Kovalenko

Bovgyra

Dzikovskyi

et al. 2021

Phys. Chem. Solid St.

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“…The parameters, refractive index, dielectric constant, electrical susceptibility and optical conductivity etc. are very important for light-material interactions in energy conversion for development of optoelectronics devices [ 7 , 30 , 31 ]. These parameters have been determined for the nanocomposites with varying amount of TiO 2 nanoparticles from experimental data.…”

Section: Resultsmentioning

confidence: 99%

Delving into the properties of polymer nanocomposites with distinctive nano-particle quantities, for the enhancement of optoelectronic devices

Yaqub

Farooq

AlSalhi

2020

Heliyon

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The study focusses on synthesis and modification of structural, optical and electrical characteristics of nanostructured titanium dioxide anatase embedded Poly(methyl methacrylate) (PMMA) nanocomposite with different weight percentages (0.03, 0.06, 0.12, 0.18 and 0.24%) by the solvent casting method. Modification in the morphology of PMMA nanocomposites with an increasing amount of titanium dioxide anatase is studied by using a field emission scanning electron microscope (FE-SEM). Micrograms of FE-SEM show spherical shaped nanoparticles distribution in PMMA nanocomposites thin films. In optical characterization, transmission, optical band gaps, the real and imaginary part of dielectric constant, linear susceptibility, optical conductivity, refractive index and extinction coefficient are calculated using experimental data. It is observed that the optical band gap has an overall decreasing trend with increasing the weight percentage of TiO 2 (anatase) in PMMA nanocomposites. It is also found that values of all electrical parameters decrease with increasing the weight percentage of TiO 2 (anatase) in PMMA nanocomposites. All wavelength depending parameters are investigated in the wavelength range from 190 nm to 2700 nm. Single oscillator model is used to analyze the refractive index dispersion and estimation of the oscillator energy and dispersion energy of the films. The study is applicable to optical sensors and other optoelectronic devices.

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“…Adsorption coefficient values of the deposited thin film were estimated using equation ( 8) as given by [32,33].…”

Section: Optical Propertiesmentioning

confidence: 99%

Effect of SILAR Cycles on the Thickness, Structural, Optical Properties of Cobalt Selenide Thin Films

N.J

V.C²,

Okoli

et al. 2021

Int. Res. J. multidiscip. Technovation

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Cobalt Selenide thin films were fabricated using Successive Ionic Layer Adsorption and Reaction (SILAR) deposition technique at different SILAR cycles. The precursors for Cobalt and Selenium ions were CoCl2.6H2O and Na2SeSO3 respectively. Optical properties and thickness of the deposited films were studied to determine the effect of number of SILAR cycles on these properties. The optical absorbance of the films was found to decrease as wavelength increases and increases as SILAR cycle increases. Transmittance of the CoSe thin films was found to increase as the wavelength increases but decreases as number of SILAR cycles increased. The extinction coefficient of CoSe thin films decreases as wavelength increases but increases as the SILAR cycles increases. The energy band gap of CoSe thin films deposited decreases from 2.47 eV to 2.20 eV as number of SILAR cycles increases and film thickness increases from 92.96 nm and 225.63 nm. Structural properties of deposited cobalt selenide thin films showed that they correspond to orthorhombic phase of CoSe2 crystal structure of cobalt selenide thin films with crystallite size ranging from 7.63 nm to 13.07 nm.

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Optical Properties of CdS Thin Films

Cited by 30 publications

References 22 publications

Effect of Al doping on optical properties of ZnO thin films: theory and experiment

Effect of Al doping on optical properties of ZnO thin films: theory and experiment

Delving into the properties of polymer nanocomposites with distinctive nano-particle quantities, for the enhancement of optoelectronic devices

Effect of SILAR Cycles on the Thickness, Structural, Optical Properties of Cobalt Selenide Thin Films

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