Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1231577 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2016 | 5 Pages |
•Er3 +-singly doped and Er3 +/Yb3 +-codoped SiO2–BaF2–ZnF2 glasses were prepared.•Judd–Ofelt analysis that indicated the glass structure changed with change of glass composition.•The intensity of upconversion luminescence decreased with increasing ZnF2 content.
Er3 +-singly doped and Er3 +/Yb3 +-codoped 50SiO2–(50 − x)BaF2–xZnF2(SBZx) oxyfluoride glasses are prepared and the optical properties of Er3 +-singly doped glasses are investigated by using the Judd–Ofelt theory. Bright green and red upconversion luminescence of Er3 +/Yb3 +-codoped glasses is obtained under 980 nm excitation. Furthermore, factors affecting this phenomenon such as glass composition, doping concentration of Er3 + and Yb3 + ions, and pump power are discussed in details.
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