Abstract Newly long afterglow phosphor-in-glass (PiG) plays pivotal roles in the region of optical data storage. By using solid-phase reactions and unique spectrum modulation methods, a color-tunable PiG with decent persistent phosphorescence which can be tuned from green to blue has been fabricated. Lu3Al2Ga3O12: Ce3+, Cr3+ (LuAGG: Ce3+, Cr3+) based on TBZNA glass could emit bright green light signal located at 350 and 420 nm ascribed to the 5d1/5d2-4f transitions when corresponding optical data was being loadout. The doping of Cr3+ increases the density of the trap and provides additional traps between the shallow trap and the deep trap to capture more electrons, further improving afterglow decay time. And the storage time and cyclic reading times are derived by the method of thermal stimulation. Thereinto, tunable emission color has been obtained via changing the concentration of Ga3+, using UV excitation. Moreover, the influence of the Cr3+/Ga3+ on luminescence properties of long-afterglow-PiG materials have been described in detail. Achieved results confirm that it makes LuAGG-PiG as a long afterglow PiG matrix, demonstrating its promising application in optical data storage.

中文翻译：

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LuAGG 磷光特性的新见解：用于光学数据存储的玻璃中长余辉磷光体

摘要 新型长余辉玻璃中荧光粉（PiG）在光学数据存储领域发挥着举足轻重的作用。通过使用固相反应和独特的光谱调制方法，已经制造出一种颜色可调的 PiG，具有良好的持久磷光，可以从绿色调到蓝色。基于 TBZNA 玻璃的 Lu3Al2Ga3O12: Ce3+, Cr3+ (LuAGG: Ce3+, Cr3+) 可以在加载相应的光学数据时发出位于 350 和 420 nm 的亮绿色光信号，这归因于 5d1/5d2-4f 跃迁。Cr3+ 的掺杂增加了陷阱的密度，并在浅陷阱和深陷阱之间提供了额外的陷阱，以捕获更多的电子，进一步改善余辉衰减时间。并且通过热刺激的方法导出存储时间和循环读取时间。其中，通过使用紫外激发改变 Ga3+ 的浓度获得了可调发射颜色。此外，详细描述了Cr3+/Ga3+对长余辉PiG材料发光性能的影响。获得的结果证实，它使 LuAGG-PiG 成为长余辉 PiG 矩阵，证明其在光学数据存储中的应用前景广阔。