Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Vilnius, Lithuania.
Institute of Solid State Physics, University of Latvia, Riga, Latvia.
Luminescence. 2024 Jan;39(1):e4673. doi: 10.1002/bio.4673.
Ce and LuAG:Ce ceramics are widely used as scintillator materials that convert high-energy radiation into visible light. For the practical application of such compounds, short decay times are a necessity. One way of shortening the existing decay times even more is to change the local environment of emitting ions by means of doping the matrix with additional elements, for example, boron or magnesium. Furthermore, boron ions also can help absorb gamma rays more efficiently, therefore improving overall applicability. Due to the aforementioned reasons, YAG and LuAG ceramics doped with cerium, boron, and magnesium were synthesized. Initial amorphous powders have been obtained by means of sol-gel synthesis and pressed into pellets under isostatic pressure and finally calcinated to form crystalline ceramics. The effects of boron and magnesium doping on the morphological, structural, and luminescence properties were investigated. The key results showed that doping with boron has indeed shortened the decay times of the garnet pellets. Overall, boron doping of ceramics is a relatively new research area; however, it is rather promising as it helps both to improve the luminescence properties and to increase particle growth rate.
Ce 和 LuAG:Ce 陶瓷被广泛用作将高能辐射转化为可见光的闪烁体材料。对于此类化合物的实际应用，短的衰减时间是必要的。通过用其他元素掺杂基质来改变发射离子的局部环境是进一步缩短现有衰减时间的一种方法，例如硼或镁。此外，硼离子还可以更有效地吸收伽马射线，从而提高整体适用性。出于上述原因，合成了掺杂铈、硼和镁的 YAG 和 LuAG 陶瓷。通过溶胶-凝胶合成获得初始非晶粉末，在等静压下压制成颗粒，最后煅烧形成结晶陶瓷。研究了硼和镁掺杂对形态、结构和发光性能的影响。主要结果表明，硼掺杂确实缩短了石榴石颗粒的衰减时间。总的来说，陶瓷的硼掺杂是一个相对较新的研究领域，但很有前途，因为它有助于提高发光性能和增加颗粒生长速度。
