mahrous.r.ahmed

Mahrous R Ahmed

Professor -

Faculty of science

Address: Physics Department - Science Faculty - Sohag University - Egypt

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Publications Which contain the keyword: Chalcogenides

Correlation of structural and optical properties in as-prepared and annealed Bi2Se3 thin films

2018-11-27 19:47:39 Keywords Chalcogenides, Thin layers Ligh, Light transmission, Annealing, Band gap,
Correlation of structural and optical properties in as-prepared and annealed Bi2Se3 thin films
Bi2Se3 bulk alloys were synthesized using a standard mono-temperature melting process and used as source materials to deposit thin films on non-conductive super cleaned glass substrates by a vacuum thermal evaporation technique. Both bulk and thin-film samples were polycrystalline as confirmed by X-ray diffraction patterns. The film samples were subjected to the annealing process in air atmosphere at 250 and ... Read more

Characterization and optical properties of bismuth chalcogenide films prepared by pulsed laser deposition technique

2018-11-27 19:55:24 Keywords Optical characteristics, Thin films, Chalcogenides,
Characterization and optical properties of bismuth chalcogenide films prepared by pulsed laser deposition technique
Thin films of Bi-based chalcogenides were prepared by pulsed laser deposition (PLD) technique according to the stoichiometric formula: Bi2(Se1−xTex)3. Their optical properties were studied aiming to find the suitable area of application and the optimum composition amongst the samples under study. X-ray diffraction analysis proved the crystallinity of the deposited samples; in addition, surface roughness and films homogeneity were studied ... Read more

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