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首页> 外文期刊>Journal of materials science >Scintillation and VUV-excited photoluminescence of europium-doped BaF_2-Al_2O_3-B_2O_3 glasses
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Scintillation and VUV-excited photoluminescence of europium-doped BaF_2-Al_2O_3-B_2O_3 glasses

机译：掺BaBaF_2-Al_2O_3-B_2O_3玻璃的闪烁和VUV激发光致发光

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摘要

We have investigated the X-ray induced luminescence (XRL) and the lifetime of a series of yEu~(2)O~(3)–50BaF~(2)–xAl~(2)O~(3)–(50-x)B~(2)O~(3)(x = 0–25, y = 1–10, in mol%) glasses, which exhibit high PL quantum yields (Shinozaki et al. in Opt Mater 36:1384, 2014), for potential scintillator applications. In addition, the effects of Al~(2)O~(3)content and dopant concentrations of Eu_(3+)ions used for quenching were particularly focused. The XRL intensity of the 25Al~(2)O~(3)glass was 76% of that for the 0Al~(2)O~(3)glass. The lifetime increased with increasing the concentration of Al~(2)O~(3), and the XRL lifetime was shorter than the PL lifetime. Concentration quenching was also observed, where the PL intensity increased with increasing the concentration of Eu~(2)O~(3)below y = 10. In addition, the 3Eu~(2)O~(3)-doped glass exhibited the highest XRL intensity among the materials tested. The mechanism underlying this behavior was discussed in comparison with conventional PL and VUV-excited PL spectroscopies.
机译：我们研究了X射线诱导的发光（XRL）和一系列yEu〜（2）O〜（3）–50BaF〜（2）–xAl〜（2）O〜（3）–（50- x）B〜（2）O〜（3）（x = 0-25，y = 1-10，mol％）玻璃，具有很高的PL量子产率（Shinozaki等人，Opt Mater 36：1384，2014） ），用于潜在的闪烁体应用。此外，还特别关注了Al〜（2）O〜（3）的含量和Eu_（3+）离子掺杂浓度对淬火的影响。 25Al〜（2）O〜（3）玻璃的XRL强度为0Al〜（2）O〜（3）玻璃的76％。随着Al〜（2）O〜（3）浓度的增加，寿命增加，XRL寿命短于PL寿命。在Eu〜（2）O〜（3）浓度低于y = 10时，PL强度随Eu〜（2）O〜（3）浓度的增加而增大，并且还出现了掺杂3Eu〜（2）O〜（3）的玻璃。测试材料中最高的XRL强度。与常规的PL和VUV激发的PL光谱学相比，讨论了这种行为的机理。

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