Open Access

ARTICLE

The effect of the structure on the physical properties in Ge_xAs₁₀Se_90-x glasses

S. W. Xu^*, T. W. Liang, X, Y, Zhu

College of Mathematics and Physics, Hunan University of Arts and Science, 415000, Changde, People’s Republic of China

* Corresponding Author:

Chalcogenide Letters 2023, 20(1), 55-62. https://doi.org/10.15251/CL.2023.201.55

Received 17 October 2022; Accepted 13 January 2023;

Abstract

We have prepared a group of Ge_xAs₁₀Se_90-x glass(x=5, 10, 15, 20, 25, 30, and 35 at. %) and investigated their structure and physical properties. It was found that, the minimum refractive index and maximum optical bandgap occur in Ge₂₅As₁₀Se₆₅ glass that is chemically stoichiometric. Analysis of Raman spectra of the glasses indicated that the number of the Ge-Ge, As-As, and Se-Se homopolar bonds is closely related to the bandgap, because the band-tails formed by homopolar bonds could reduce the optical bandgap. The transition behavior of the structural units and physical properties of the glasses occurs at the glass with the chemically stoichiometric composition, and thus the chemical composition dominates physical properties of Ge_xAs₁₀Se_90-x chalcogenide glasses.

---

Keywords

---