Optical Absorption of Chalcogenide Glass Ga2S3-La2S3 Doped with Erbium

Authors

  • V.V. Halyan Lesya Ukrainka Eastern European
  • A.H. Kevshyn Department of Experimental physics and technologies information measuring of Lesya Ukrainka Eastern European
  • І.А. Ivashchenko Department of Inorganic and Physical Chemistry of Lesya Ukrainka Eastern European
  • І.D. Olekseuk Department of Inorganic and Physical Chemistry of Lesya Ukrainka Eastern European
  • I.V. Danyliuk 3Department of Ecology and Environmental Protection of Lesya Ukrainka Eastern European
  • G.P. Shavarova Department of Experimental physics and technologies information measuring of Lesya Ukrainka Eastern European

DOI:

https://doi.org/10.15330/pcss.18.3.342-346

Keywords:

glassy alloys, optical absorption, Urbach's rule

Abstract

The glasses of the La2S3–Er2S3–Ga2S3 system were synthesized from the melted samples which where quenched in to the cold 25-% solution of NaCl. Their optical absorption spectra were studied in the range of 1.2–2.9 eV at 80 K. For doped erbium glasses, there are narrow absorption bands with maxima at 2.53, 2.35, 2.27, 1.88, 1.54, 1.26 eV. With increasing of the content of La2S3 (30 - 40 mol. %) the bandgap width decreases (Eg = 2.83 - 2.73 eV) and the Urbach parameter increases (DE = 151 - 238 meV). These changes are determined by the structural disorder in the glasses.

References

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Published

2017-09-15

How to Cite

Halyan, V., Kevshyn, A., Ivashchenko І., Olekseuk І., Danyliuk, I., & Shavarova, G. (2017). Optical Absorption of Chalcogenide Glass Ga2S3-La2S3 Doped with Erbium. Physics and Chemistry of Solid State, 18(3), 342–346. https://doi.org/10.15330/pcss.18.3.342-346

Issue

Vol. 18 No. 3 (2017)

Section

Scientific articles
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