Structural and Optical Properties of LiGd1-xLux(WO4)2 Co-Doped with Yb3+/Er3+ Synthesized via Solid State Reaction Method

  • N. Naimi LPCMIA Laboratory, Department of Physics, Faculty of Sciences, Saad Dahleb Blida 1 University, Blida, Algeria https://orcid.org/0009-0005-0707-9641
  • B. Rekik LPCMIA Laboratory, Department of Physics, Faculty of Sciences, Saad Dahleb Blida 1 University, Blida, BP 270 Soumaa Road Blida, Algeria. https://orcid.org/0000-0003-4944-3390
  • I. Lanez LPCMIA Laboratory, Department of Physics, Faculty of Sciences, Saad Dahleb Blida 1 University, Blida, Algeria https://orcid.org/0000-0001-6758-9583
  • M. Derbal LPCMIA Laboratory, Department of Physics, Faculty of Sciences, Saad Dahleb Blida 1 University, Blida, BP 270 Soumaa Road Blida, Algeria. https://orcid.org/0000-0001-9513-7736
  • L. Benharrat Research Center in Semiconductors Technology for Energy-CRTSE, Merveilles, Algiers, Algeria https://orcid.org/0000-0002-6617-2222
  • Z. Bendaoud LPCMIA Laboratory, Department of Physics, Faculty of Sciences, Saad Dahleb Blida 1 University, Blida, BP 270 Soumaa Road Blida, Algeria. https://orcid.org/0009-0003-5780-3410
DOI: https://doi.org/10.26565/2312-4334-2026-3-31
Keywords: Double tungstate, Yb3 /Er3 co-doping, Up-conversion, Green emission

Abstract

Double tungstate materials have been extensively studied and have attracted much attention as solid state lighting hosts. These materials with general formula AB(WO4)2 (A: alkali metal and B: trivalent rare earth ion) are widely used for their great optical properties. In this work, Gd3+ions were partially substituted with Lu3+ ions to synthesize the LiGd1-xLux(WO4)2 compounds in order to study the structural, vibrational and optical behaviors of LiGd1-xLux(WO4)2 co doped with Yb3+ and Er3+ ions. Using the solid-state reaction, different concentrations of Lu3+ (x=2.5%, 5%, 80%, 90%, and 95%) were selected to synthesize our compounds. These concentrations influence the vibrational characteristics of the W-O bond through both band broadening and a shift in the symmetric stretching mode (ν1). For the optical properties, green up-conversion under 980 nm excitation and down-conversion under 380 nm excitation of the double tungstate co-doped with Yb3+ and Er3+ were observed in the range of 530-552 nm. The lifetimes of the 2H11/2 and 4S3/2 levels, as well as the effect of Lu3+ substitution on the green emission of Er3+ in these compounds, were compared and discussed.

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Published
2026-09-07
Cited
How to Cite
Naimi, N., Rekik, B., Lanez, I., Derbal, M., Benharrat, L., & Bendaoud, Z. (2026). Structural and Optical Properties of LiGd1-xLux(WO4)2 Co-Doped with Yb3+/Er3+ Synthesized via Solid State Reaction Method. East European Journal of Physics, (3), 357-369. https://doi.org/10.26565/2312-4334-2026-3-31
Issue
No. 3 (2026): East European Journal of Physics
Section
Original Papers

Copyright (c) 2026 N. Naimi, B. Rekik, I. Lanez, M. Derbal, L. Benharrat, Z. Bendaoud

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