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The Nature Of The Chemical Bond

Effect of Se addition on optical and electrical properties of chalcogenide CdSSe thin films

Book reviewPhysics of non-crystalline solids: edited by J. A. Prins. 667 pages, diagrams, illus. 6 × 9 in. New York, John Wiley & Sons, Interscience, 1965. Price, $27.50

Influence of composition on optical and dispersion parameters of thermally evaporated non-crystalline Cd50S50−xSex thin films

Magnesium Oxide (MgO).- Zincblende Magnesium Sulphide (?-MgS).- Zincblende Magnesium Selenide (?-MgSe).- Zincblende Magnesium Telluride (?-MgTe).- Zinc Oxide (ZnO).- Wurtzite Zinc Sulphide (?-ZnS).- Cubic Zinc Sulphide (?-ZnS).- Zinc Selenide (ZnSe).- Zinc Telluride (ZnTe).- Cubic Cadmium Sulphide (c-CdS).- Wurtzite Cadmium Sulphide (w-CdS).- Cubic Cadmium Selenide (c-CdSe).- Wurtzite Cadmium Selenide (w-CdSe).- Cadmium Telluride (CdTe).- Cubic Mercury Sulphide (?-HgS).- Mercury Selenide (HgSe).- Mercury Telluride (HgTe).

Handbook on physical properties of semiconductors

Study of optical properties of thermally evaporated ZnSe thin films annealed at different pulsed laser powers

Glasses with compositions xPbO-RNa2B4O7-(100 � Rx)CAS (049CaO, 021Al2O3, 03SiO2) with 0r xr 50 and 50r Rr 75 mol% have been prepared using the normal melt quenching technique The optical transmittance and reflectance spectrum of the glasses have been recorded in the wavelength range 300-1100 nm The values of the optical band gap E opt g for indirect transition and refractive index have been determined for different compositions of the amorphous glass The average electronic polarizability of the oxide ion a 2� o and the optical basicity have been estimated from the values of calculated refractive indices The compositional dependence of the different physical parameters such as the density, the optical band gap, the refractive index, the average electronic polarizability of the oxide ion and the optical basicity on PbO content have been analyzed and discussed

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Optical study of lead borosilicate glasses

Lattice strain estimation for CoAl2O4 nano particles using Williamson-Hall analysis

Amorphous As
 x
 Se70Te30−x
 thin films with (0≤x≤30 at.%) were deposited onto glass substrates by using thermal evaporation method. The transmission spectra T(λ) of the films at normal incidence were measured in the wavelength range 400–2500 nm. A straightforward analysis proposed by Swanepoel based on the use of the maxima and minima of the interference fringes has been used to drive the film thickness, d, the complex index of refraction, n, and the extinction coefficient, k. The dispersion of the refractive index is discussed in terms of the single-oscillator Wemple and DiDomenico model (WDD). Increasing As content is found to affect the refractive index and the extinction coefficient of the As
 x
 Se70Te30−x
 films. With increasing As content the optical band gap increases while the refractive index decreases. The optical absorption is due to allowed indirect transition. The chemical bond approach has been applied successfully to interpret the increase of the optical gap with increasing As content.

Optical band gap and refractive index dispersion parameters of As x Se 70 Te 30− x (0≤ x ≤30 at.%) amorphous films

Impact of Cd-addition upon optical properties and dispersion parameters of thermally evaporated CdxZn1-xSe films: Discussions on bandgap engineering, conduction and valence band positions

Kamal A. Aly

Papers

Study of optical properties of thermally evaporated ZnSe thin films annealed at different pulsed laser powers

Optical study of lead borosilicate glasses

Lattice strain estimation for CoAl2O4 nano particles using Williamson-Hall analysis

Optical band gap and refractive index dispersion parameters of As x Se 70 Te 30− x (0≤ x ≤30 at.%) amorphous films

Impact of Cd-addition upon optical properties and dispersion parameters of thermally evaporated CdxZn1-xSe films: Discussions on bandgap engineering, conduction and valence band positions