Tb3+ 激活的 K2O-La2O3-Ga2O3 玻璃的发光特性

Q2 Engineering Optical Materials: X Pub Date : 2024-07-01 DOI:10.1016/j.omx.2024.100344

Naoki Kawano , Kenji Shinozaki , Daisuke Nakauchi , Takumi Kato , Yuma Takebuchi , Hiroyuki Fukushima , Takayuki Yanagida

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引用次数: 0

摘要

研究了 Tb3+激活的没食子酸盐玻璃（20K2O-(11-x/2)La2O3-69Ga2O3-x/2Tb4O7，x = 0.1-1.0）的光致发光、闪烁和热致发光特性。Tb3+激活的没食子酸盐玻璃显示出光致发光，在大约 490、540、595 和 625 纳米波长处有一些峰值，这些峰值可归因于 Tb3+ 的 4f→4f 转变。这些峰值在 X 射线辐射下也会出现，x = 1.0 的没食子酸玻璃显示出最高的强度。此外，在 90 °C 时出现了一个宽的热致发光辉光峰，热致发光峰强度随 Tb 浓度的增加而降低。在闪烁和热发光强度之间观察到了一种互补关系。

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Luminescence properties of Tb3+-activated K2O–La2O3–Ga2O3 glasses

Photoluminescence, scintillation, and thermoluminescence characteristics of the Tb³⁺-activated gallate glasses (20K₂O–(11-x/2)La₂O₃–69Ga₂O₃–x/2Tb₄O₇, x = 0.1–1.0) were investigated. The Tb³⁺-activated gallate glasses exhibited photoluminescence with some peaks at approximately 490, 540, 595, and 625 nm that were attributable to the 4f→4f transition of Tb³⁺. These peaks also appeared under X-ray radiation, and the x = 1.0 gallate glass showed the highest intensity. Moreover, a broad thermoluminescence glow peak appeared at 90 °C, and the thermoluminescence peak intensity decreased with increasing the Tb concentration. A complimentary relation between the scintillation and thermoluminescence intensity was observed.