Optical absorption spectra and energy levels of Er3+ ions in glassy lithium tetraborate matrix

Raman scattering in glassy Li2B4O7 doped with Er2O3

“…Glassy Li 2 B 4 O 7 samples were synthesized following the technology described in Refs. [22,23]. They were doped with erbium oxide Er 2 O 3 taken with the concentrations 0, 0.0005, 0.001, 0.005, 0.01 and 0.05 wt %.…”

X-ray luminescence and spectroscopic characteristics of Er3+ ions in a glassy lithium tetraborate matrix

“…A comparison of the XRL spectra of Li 2 B 4 O 7 :Er with the absorption spectra in the range of 200-800 nm [20] shows that the XRL spectra are more complex; in particular, they contain more features than the absorption spectra (36 and 16, respectively). Note that the three transitions that were observed in the absorption spectra, 4 I 13/2 , 2 L 17/2 , and 4 G 9/2 → 4 I 15/2 (λ = 228, 240, and 364 nm, respectively), were absent in the XRL spectra.…”

“…Previously [20], we investigated the optical absorption spectra of glassy LTB activated by Er 2 O 3 . It is of interest to analyze the behavior of Er 3+ ions upon X-ray excitation, because the practical use of REEs is based on the spectroscopic properties of lanthanides [21,22].…”

Lithium Tetraborate as a Neutron Scintillation Detector: A Review

“…These ions can be used in Li2B4O7-based compounds (as shown in Figure 11) to act as outstanding activators for modification of the luminescence spectrum [79]. Not only the luminescence spectra of rare-earth-doped Li2B4O7 are affected by the kind of rare earth dopant [11,21,[23][24][25]29,31,33,39,40,46,80], but is also depends on its concentration [29,80] and the growth atmosphere [33]. Preliminary work of Zadneprovski et al [11] suggests that co-doping Li2B4O7 with Cu along with many rare earth dopant additions leads to a very efficient neutron scintillation (Figure 12) and this may set a limit on the available concentrations of activators, when managing the overall luminescence spectrum.…”