Calculation of the thickness and optical constants of lead titanate thin films  grown on MgO from their transmission spectra

Essahlaoui, A.; Essaoudi, Hafida; Hallaoui, A.; Bouhadda, Mohamed; Labzour, A.; Housni, A.

doi:10.26872/jmes.2018.9.1.26

Cited by 6 publications

(4 citation statements)

References 24 publications

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“…Typical Fig. (4) Illustrates (αhυ) 2 as a function of photon energy (hυ) for all thin films of as-deposited and CuInS 2 film with temperature 350 0 C. The linear portion of each was extrapolated to (αhυ) 2 = 0 and meet energy (hv) axis given the values of band gap Eg 1 [34]. The absorption coefficient is calculated by using these values of band gap (Eg 1 ) and slope A of the linear portion of the curves, for hv values corresponding to the non-linear portion of the curve.…”

Section: Fig 3 Absorption Coefficient Versus Incident Photon Energy Hv (Ev) For Various Temperatures (250 To 375 0 C)mentioning

confidence: 99%

“…In general, optical constant [34] of any of the material is that any number of quantities characteristic of the optical behavior of a substance such as the refractive index, absorption coefficient, or reflectivity for a specified wavelength, it is combination referred as called optical constant and have wide applications in designing different optical components and modeling optical coatings [36]. These values are evaluated from the transmittance and / or reflectance spectra.…”

Section: Optical Constantsmentioning

confidence: 99%

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Effect of temperature on optical properties of CuInS2 thin films

Meshram¹,

Tembhurkar²,

Chimankar³

2018

IJSRPAS

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Polycrystalline CuInS 2 thin films were grown by Spray pyrolysis method. This films have been deposited onto the glass substrate by varying substrate temperature from 275 0 C, at the interval of 25 to 350 0 C by using aqueous solution of Cupric chloride, Indium tri-chloride and thiourea of 0.02 M and Seems to be more important parameters affecting physical properties of the semiconductor. On account for the temperature dependent optical properties of polycrystalline CuInS 2 thin films, grain boundary states were operative in nature. The values of absorption coefficient, extinction coefficient, refractive index, and dielectric constant have been calculated from the optical measurements. The prepared films at different substrate temperatures were found to have high transmittance (76 %) with the lowest thickness approximately t = 0.126 μm and at low transmittance (50 %) of the films with highest thickness nearly equal to t = 0.2163 μm. Due to temperature variation, the atoms are arrange regular in manner compound of CuInS 2 films are investigates. As the films are not doped intentionally, defect observed in intrinsic nature by Sulphur interstitials. The most significant results in present study, the temperature varied with thickness of the film can be used to modify the optical band gap, extinction coefficient, refractive index and real-imaginary part of dielectric constants of CuInS 2 thin films.

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Section: Fig 3 Absorption Coefficient Versus Incident Photon Energy Hv (Ev) For Various Temperatures (250 To 375 0 C)mentioning

confidence: 99%

Section: Optical Constantsmentioning

confidence: 99%

Effect of temperature on optical properties of CuInS2 thin films

Meshram¹,

Tembhurkar²,

Chimankar³

2018

IJSRPAS

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“…Determination of the thickness and optical characteristics of coherent layers on transparent substrates by using the transmission spectra is a well-known procedure. Swanepoel's method (envelope method) [1][2][3][4] is based on the usage of interference transmittance extrema and envelopes. Using the simplified transmission expressions and a fitting procedure for analysis, the method provides determination with sufficient accuracy of the values of d, n and α of the films, the average amplitude of the surface roughness and the energy band gap [2].…”

Section: Introductionmentioning

confidence: 99%

“…3). In [1][2][3][4], the midline was obtained manually. In [17], the interference fringes of transmission spectrum were removed using the integration method.…”

mentioning

confidence: 99%

Determination of the parameters of coherent magneto-optical layers on a finite absorbing substrate from thermal radiation spectra

Morozhenko¹,

Maslov²,

Bariakhtar³

et al. 2020

SPQEO

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A possibility of determining the parameters of a coherent magneto-optical layer on a finite incoherent absorbing substrate by analyzing the spectra of its thermal radiation (TR) has been investigated. On the example of a plane-parallel InAs semiconductor plate silver-coated on the back surface, it has been shown that a complex analysis of TR spectra, both without and with the presence of magnetic field, makes it possible to determine the thickness, optical, magneto-optical and electric parameters of the layer. Algorithms for the calculation and analysis of TR spectra are adduced, which simplify determination of layer parameters and increase the accuracy of results. Comparing the position of the extremes of the experimental zero-field spectrum with the theoretical calculations, the thickness of the sample and the plasma oscillation frequency in the used semiconductor have been determined. The analysis of the relative contrast of interference oscillations in the TR spectrum in the magnetic field using previously defined parameters enabled to ascertain the spectral dependence of the Faraday rotation angle and to determine the concentration, effective mass and type of current carriers. It has been assumed, that such analysis of luminescence spectra also allows determining the parameters of magneto-optical layers and structures.

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Characterization the optical properties of biocompatible agarose and doped chitosan thin films and determination the refractive indices using swanepoel envelope method

Aesa

Hussein

2023

AIP Conference Proceedings

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Calculation of the thickness and optical constants of lead titanate thin films grown on MgO from their transmission spectra

Cited by 6 publications

References 24 publications

Effect of temperature on optical properties of CuInS2 thin films

Effect of temperature on optical properties of CuInS2 thin films

Determination of the parameters of coherent magneto-optical layers on a finite absorbing substrate from thermal radiation spectra

Characterization the optical properties of biocompatible agarose and doped chitosan thin films and determination the refractive indices using swanepoel envelope method

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