Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8145689 | Infrared Physics & Technology | 2018 | 8 Pages |
Abstract
In this study, the structural and optical characterization of bulk Se-Ge-As glasses has been investigated. In this regards, six different Se60Ge40âxAsx (0â¯â¤â¯xâ¯â¤â¯25) glasses were prepared by conventional melt quenching technique in quartz ampoule. The produced samples were characterized using X-ray diffraction (XRD), Raman spectroscopy, differential thermal analysis (DTA), ultraviolet-visible (UV-Vis) and Fourier transform infrared (FTIR) spectroscopy. The fundamental absorption edge for all the glasses was analyzed in terms of the theory proposed by Davis and Mott. According to achieved results, fully amorphous phase can easily form in different Se-Ge-As systems. The thermal and optical characteristic of Se60Ge40âxAsx glasses shows anomalous behavior at 5â¯mol% of As for the glass transition temperature, transmittance, absorption edge, optical energy gap and Urbach energy. The highest glass transition temperature, transmittance, optical energy gap and Urbach energy properties were achieved in Se60Ge35As5 glass as a result of the highest connectivity of cations and anions in glass network.
Related Topics
Physical Sciences and Engineering
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Atomic and Molecular Physics, and Optics
Authors
M. Ghayebloo, M. Rezvani, M. Tavoosi,