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首页> 外文期刊>Journal of the Ceramic Society of Japan >Correlation between the emission properties of Sn2+ center and the chemical composition of ZnO–P2O5 glasses
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Correlation between the emission properties of Sn2+ center and the chemical composition of ZnO–P2O5 glasses

机译：Sn2 +中心的发射特性与ZnO–P2O5玻璃化学成分的相关性

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摘要

Photoluminescence (PL) properties of Sn-doped zinc phosphate (Sn: x ZP) glasses with different chemical compositions are investigated. Sn exists only in the form of Sn2+ in Sn: x ZP glasses, which were prepared by a conventional melt-quenching method in Ar atmosphere. The glass-transition temperatures, T g, of the Sn-doped glasses are lower than that of Sn-free glasses, and the change in the T g values of Sn-doped glasses increases with increasing ZnO amount. Since the relative ratio of 4-fold coordinated Sn2+ becomes higher with increasing ZnO amount, the coordination state is found to depend significantly on the network structure and not on the optical basicity of the Sn: x ZP glasses. The PL bandwidth, indicating the site distribution, becomes narrower as the ZnO amount increases. In addition, the PL decay lifetime in the Zn-rich glass is shorter compared to that of the P2O5-rich glasses, implying that the distribution of Sn2+ is also associated with the network structure. Thus, the network structure of the host matrix rather than the average optical basicity significantly influences the local structure of Sn2+ emission center.
机译：研究了具有不同化学成分的掺Sn磷酸锌（Sn：x ZP）玻璃的光致发光（PL）特性。 Sn在Sn：x ZP玻璃中仅以Sn 2 + 的形式存在，这是在Ar气氛中通过常规的熔融淬火方法制备的。掺锡玻璃的玻璃化转变温度T g 低于无锡玻璃，并且Sn-的T g 值变化掺杂玻璃随着ZnO含量的增加而增加。由于随着ZnO含量的增加，四元配位Sn 2 + 的相对比例变得更高，因此发现配位态主要取决于网络结构，而不取决于Sn：x ZP的光学碱度。眼镜。随着ZnO量的增加，表示位点分布的PL带宽变窄。另外，富锌玻璃的PL衰变寿命比富P 2 O 5 的玻璃短，这表明Sn 2 + 也与网络结构相关联。因此，基质基质的网络结构而不是平均光学碱度显着影响Sn 2 + 发射中心的局部结构。

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