Structural, Morphology and Some Optical Properties of Chalcogenide Ga80-xSexTe20 (Where x = 10%, 15% and 20%) Glassy Material - New Journal of Glass and Ceramics

NJGC > Vol.7 No.4, October 2017

Structural, Morphology and Some Optical Properties of Chalcogenide Ga_80-xSe_xTe₂₀ (Where x = 10%, 15% and 20%) Glassy Material ()

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DOI: 10.4236/njgc.2017.74008 1,048 Downloads 2,221 Views Citations

Author(s)

Khadijah M. Al Mokhtar, Bahia O. Alsobhi

Affiliation(s)

Department of Physics, Faculty of Science, Taibah University, Madinah, Saudi Arabia.

ABSTRACT

Ga_80-xSe_xTe₂₀ amorphous system was prepared by conventional technique. Structural, morphology and optical properties have been investigated. X-ray diffraction (XRD) patterns reveal the non-crystalline nature of the prepared sample. Differential thermal analysis (DTA) traces indicate the presence glass transition temperature T_gfor all samples below 500°C. Addition T_g values increases by increasing Se content. Energy dispersive X-ray spectroscopy (EDX) data shows good agreement with actual composition. Moreover, surface characterization was achieved by scanning electron microscope (SEM). The patterns confirmed the non-crystalline nature. In order to analyze the data, the cohesive energy C.E was calculated by all three composition optical properties that have been investigated in the wavelength range 500 - 2500 nm. Reflectivity R and transmitivity T spectrum were used to estimate the band gap energy using UV-Visible absorption spectrum. It is worthy mention that the optical band gap follows the T_g and cohesive energy behavior, where it increases by increasing Se content.

KEYWORDS

Chalcogenide Glasses, Structure, Optical, Cohesive Energy

Share and Cite:

Al Mokhtar, K. and Alsobhi, B. (2017) Structural, Morphology and Some Optical Properties of Chalcogenide Ga_80-xSe_xTe₂₀ (Where x = 10%, 15% and 20%) Glassy Material. New Journal of Glass and Ceramics, 7, 91-99. doi: 10.4236/njgc.2017.74008.

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