Optical properties of Eu2+-doped strontium borate glasses containing F− and Li+ ions

Optical properties of Eu2+-doped strontium borate glasses containing F− and Li+ ions

O6; In this experiment, strontium borate glasses were prepared using the conventional quenching method in air atmosphere. Optical absorption, photoluminescence excitation and emission spectra, X-ray excited luminescence (XEL), and luminescence decay curve of the as-prepared glasses were investigated...

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Veröffentlicht in:Journal of rare earths 2008-08, Vol.26 (4), p.490-494
Hauptverfasser: HUANG, Yanlin, JANG, Kiwan, WANG, Xigang, JIANG, Chuanfang
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creator HUANG, Yanlin
JANG, Kiwan
WANG, Xigang
JIANG, Chuanfang
description O6; In this experiment, strontium borate glasses were prepared using the conventional quenching method in air atmosphere. Optical absorption, photoluminescence excitation and emission spectra, X-ray excited luminescence (XEL), and luminescence decay curve of the as-prepared glasses were investigated at room temperature. The as-prepared glasses had two kinds of Eu ions, i.e., Eu2+ and Eu3+. Compared with the reported results of strontium borate glasses, Eu2+ luminescence was enhanced in the studied strontium borate glasses coprepared with F- and Li+ ions. The coexisting of Li+ or F- in the borate glasses could create more negative defect VSr″ and stabilize Eu2+ ions, which might act as donor of electrons;For the F- doping, the new center of B(O, F)4 (or BO3F) and BO2F2 units could be considered to be the distorted (BO4), which were needed as a rigid framework to stabilize the divalent rare earth ions.
doi_str_mv 10.1016/S1002-0721(08)60124-6
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Optical absorption, photoluminescence excitation and emission spectra, X-ray excited luminescence (XEL), and luminescence decay curve of the as-prepared glasses were investigated at room temperature. The as-prepared glasses had two kinds of Eu ions, i.e., Eu2+ and Eu3+. Compared with the reported results of strontium borate glasses, Eu2+ luminescence was enhanced in the studied strontium borate glasses coprepared with F- and Li+ ions. 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title Optical properties of Eu2+-doped strontium borate glasses containing F− and Li+ ions
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