ABSTRACT Ga80-xSexTe20 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 Tg for all samples below 500°C. Addition Tg values increases byincreasingSe 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 Tg and cohesive energy behavior, where it increases by increasing Se content.
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Al Mokhtar, K. and Alsobhi, B. (2017) Structural, Morphology and Some Optical Properties of Chalcogenide Ga80-xSexTe20 (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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