Optical Absorption of Chalcogenide Glass Ga2S3-La2S3 Doped with Erbium

  • 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
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

V.V. Halyan, V.V. Strelchuk, V.O. Yukhymchuk, A.H. Kevshyn, G.Ye. Davydyuk, M.V. Shevchuk, S.V. Voronyuk, Physica B. 411, 35 (2013).

Jong Heo, Joong Min Yoon, Sun-Youn Ryou, J. Non-Cryst. Sol. 238 (1-2), 115 (1998).

V.V. Halyan, M.V. Shevchuk, G.Ye. Davydyuk, S.V. Voronyuk, A. H. Kevshyn, V.V. Bulatetsky, Sem. phys, quantelect. and optoelect.12 (2), 138 (2009).

A. H. Kevshyn, V.V. Halyan, G.Ye. Davydyuk, О.V. Parasyuk, I. I. Mazurets, Phys. Chem. Glass. 36 (1), 37 (2010).

J. Sanghera, D. Gibson, Chalcogenide Glasses 113 (2014).

A.M. Loireau-Lozac'h, M. Guittard, J. Flahaut, Mater. Res. Bull. 11 (12), 1489 (1976).

A.M. Loireau Lozac'h, M. Guittard, J. Flahaut, Mater. Res. Bull. 12 (9), 881 (1977).

M. Julien-Pouzol, S. Jaulmes et C. Dagron, Acta Cryst. 38, 1566 (1982).

I. Abdulhalim, C. N. Pannell, R. S. Deol, D. W. Hewak, G. Wylangowski, D. N. Payne, J. Non-Cryst. Sol. 164-166 (2), 1251 (1993).

J. Wang, D. Hewak, W.S. Brocklesby, D.N. Payne, 10th International Non-oxide Glass Conference (United States, 1996), p. 8.

F. Urbach, Phys. Rev. 92 (5), 1324 (1953).

W.B. Pearson, Chrystallochimija i Physica Metallov i Splavov (Mir, Moscow, 1977).

X.F. Wang, S.X. Gu, J.G. Yu, X.J. Zhao, H.Z. Tao, Solid State Commun. 130 (7), 459 (2004).

Published
2017-09-15
How to Cite
HalyanV., KevshynA., IvashchenkoІ., OlekseukІ., DanyliukI., & ShavarovaG. (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
Section
Scientific articles