Optical and luminescent properties of Pr-doped Li2O MgO Al2O3SiO2 glasses
Optical and luminescent properties of Pr-doped Li2O MgO Al2O3SiO2 glasses
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DOI：
10.1016/j.optmat.2018.11.011
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发表时间：
2019-02
影响因子：
3.9
通讯作者：
H. Masai;G. Okada;N. Kawaguchi;T. Yanagida
中科院分区：
文献类型：
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作者：
H. Masai;G. Okada;N. Kawaguchi;T. Yanagida
高转换效率是荧光粉应用的关键因素。由于对氧化玻璃中Pr3+的5d - 4m的研究数量有限，因此Pr3+的发光性质与玻璃化学成分之间的关系值得研究。在此，我们证明了Pr3+掺杂铝硅酸盐玻璃的发光特性。虽然内部量子效率不如传统的Ce3+掺杂玻璃高，但更快的衰减（以纳秒为数量级）对许多不同的应用具有吸引力。在x射线照射下可以观察到一个发射带，这与光致发光有很大的不同。虽然Pr3+ - P共掺杂样品由于光学吸收边的蓝移而表现出比无P玻璃更高的量子效率，但在x射线诱导闪烁和252cf照射下的脉冲高度光谱中没有观察到P掺杂的影响。
A high conversion efficiency is a key factor for phosphor applications. Because the number of studies on the 5d–4femissions of Pr3+in oxide glasses has been limited, it is worth examining the relationship between the luminescence properties of Pr3+and the chemical composition of the glass. Herein, we demonstrate the luminescence properties of Pr3+-doped aluminosilicate glasses. Although the internal quantum efficiency is not as high as that of conventional Ce3+-doped glasses, a faster decay (on the order of nanoseconds) is attractive for many different applications. An emissions band can be observed under X-ray irradiation, which differs significantly from photoluminescence. Although the Pr3+–P-codoped samples exhibit higher quantum efficiency than P-free glass owing to a blue shift of the optical absorption edge, the effect of P doping was not observed during X-ray induced scintillation or in the pulse height spectra under252Cf irradiation.