Abstract Phosphors with tuning capabilities in their excitation and emission spectra are in high demand in the field of advanced optical technology. In this article, Eu2+ doped Ba9Lu2Si6O24 (BLSO: Eu2+) phosphors, which emit an intense light hat can be tuned from dark blue (463 nm) to efficient green (514 nm), were produced, simply by increasing the Eu2+ concentration in the BLSO host lattice. This tuning capability suggests that there are multiple and distinguishable crystallographic sites in the host lattice of the BLSO phosphors. The Eu2+ activators exhibit preferable site distributions in the BLSO host lattice, depending on the Eu2+ concentration. This offers the possibility for engineering the appropriate site surroundings, available for the Eu2+ activators. The Ba8.4Eu0.6Lu2Si6O24 phosphor displays a prominent yellowish-green emission under blue light (440 nm) excitation, compared to the dark blue emission of BLSO: 0.1Eu2+ phosphors. The green emission from the BLSO: xEu2+ phosphor is closely associated with the specific coordinating environment of the Eu2+ activator in various crystallographic Ba sites. However, concentration quenching phenomena results in intensity decrease, a problem which is then solved by introducing Sr2+.

中文翻译：

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用于开发用于高效白光 LED 的可调绿光 Ba 9 Lu 2 Si 6 O 24 :Eu 2+ 荧光粉的晶体现场工程

摘要 具有激发和发射光谱调谐能力的荧光粉在先进光学技术领域的需求量很大。在这篇文章中，Eu2+ 掺杂的 Ba9Lu2Si6O24 (BLSO: Eu2+) 荧光粉发出强光帽，可以从深蓝色 (463 nm) 调谐到高效绿色 (514 nm)，只需增加 BLSO 中的 Eu2+ 浓度即可主晶格。这种调谐能力表明 BLSO 荧光粉的主晶格中有多个可区分的晶体位点。Eu2+ 活化剂在 BLSO 主晶格中表现出较好的位点分布，这取决于 Eu2+ 浓度。这为设计适用于 Eu2+ 活化剂的适当场地环境提供了可能性。Ba8.4Eu0。与 BLSO: 0.1Eu2+ 荧光粉的深蓝色发射相比，6Lu2Si6O24 荧光粉在蓝光 (440 nm) 激发下显示出明显的黄绿色发射。BLSO: xEu2+ 荧光粉的绿色发射与 Eu2+ 活化剂在各种晶体 Ba 位点的特定配位环境密切相关。然而，浓度猝灭现象会导致强度降低，这个问题随后通过引入 Sr2+ 得以解决。