ZHOU Yong-liang, ZHANG Xiao-song, FENG Zhi-jun, LING Zhi, LI Lan. Influence on The Structure and Luminescence Properties of Er<sup>3+</sup>-doped Borate Glass for Cation[J]. Chinese Journal of Luminescence, 2012,(6): 606-610
ZHOU Yong-liang, ZHANG Xiao-song, FENG Zhi-jun, LING Zhi, LI Lan. Influence on The Structure and Luminescence Properties of Er<sup>3+</sup>-doped Borate Glass for Cation[J]. Chinese Journal of Luminescence, 2012,(6): 606-610 DOI: 10.3788/fgxb20123306.0606.
Influence on The Structure and Luminescence Properties of Er3+-doped Borate Glass for Cation
mole fraction) glass samples show the opposite trend at 1 540 nm infrared emitting and 540 nm up-conversion luminescence. We discuss the internal relation between the rare earth ion’s peripheral micro structure and fluorescence behavior. The process of electron transition for up-conversion and infrared emitting are illustrated by the energy diagram.Infrared FTIR transmission spectra show that the maximum phonon energy does not significantly change with the doping concentration. This indicates that the change of spectrum in different concentration is not derived from the influence of the maximum phonon energy. The calculation by Judd-Ofelt theroy shows that the local symmetry around rare earth ions varies with doping quantity of Al
3+
/Si
4+
. Radiative decay rates(A)
the radiative lifetime(τ)
fluorescence branching ratios(β)
and stimulated emission cross section(σ) for 540 nm and 1.54 μm are calculated. The results show that the changes are opposite. Finally
the fluorescence decaying curves of
4
I
13/2
-
4
I
15/2
for Er
3+
in the borate glass samples are characterized
which is consistent with the experimental results.
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references
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