Investigation of Er³⁺ Doped in Na₂O-Al₂O₃-BaO-CaO-Sb₂O₃-B₂O₃ -SiO₂ Glasses: Physical, Optical and Visible Luminescence Properties

Abstract:

In this work, Na₂O-Al₂O₃-BaO-CaO-Sb₂O₃-B₂O₃-SiO₂ glasses doped with Er³⁺ was prepared and investigated for their physical, optical and visible luminescence properties. The increases in density, refractive index and molar volume of the glasses with additional doping content of Er₂O₃ into the network were due to a higher molecular weight and polarizability of Er₂O₃ in comparison with the glass former (SiO₂ and B₂O₃). Ten absorption peaks were observed as a nature of Er³⁺ absorption in glass matrices. The glass exhibited four emission transitions which were assigned to ⁴F_5/2→⁴I_15/2 (460 nm), ⁴F_7/2→⁴I_15/2 (487 nm), ²H_11/2→⁴I_15/2 (522 nm) and ⁴S_3/2→⁴I_15/2 (545 nm) transitions. The strongest intensity was the green emission at 522 nm. The luminescence intensity was found to increase with Er₂O₃ content up to 4 mol% and it was decreased for higher Er₂O₃ contents due to concentration quenching effect.

• Periodical: Advanced Materials Research (Volume 974)
• Pages: 86-90
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.974.86
• Online since: June 2014
• Authors: S. Tuscharoen*, N. Chanthima, J. Kaewkhao
• Keywords: Er³⁺, Glass, Optical, Visible Luminescence

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