Masai Hirokazu, Ohkubo Takahiro, Fujii Yasuhiro, Koreeda Akitoshi, Yanagida Takayuki, Ina Toshiaki, Kintaka Kenji
National Institute of Advanced Industrial Science and Technology, 1-8-31 Midorigaoka, Ikeda, Osaka, 563-8577, Japan.
Graduate School and Faculty of Engineering, Chiba University, 1-33, Yayoi-cho, Chiba, Chiba, 263-8522, Japan.
Sci Rep. 2021 Feb 15;11(1):3811. doi: 10.1038/s41598-021-83050-1.
Amorphous materials with non-periodic structures are commonly evaluated based on their chemical composition, which is not always the best parameter to evaluate physical properties, and an alternative parameter more suitable for performance evaluation must be considered. Herein, we quantified various structural and physical properties of Ce-doped strontium borate glasses and studied their correlations by principal component analysis. We found that the density-driven molar volume is suitable for the evaluation of structural data, while chemical composition is better for the evaluation of optical and luminescent data. Furthermore, the borate-rich glasses exhibited a stronger luminescence due to Ce, indicating a higher fraction of BO ring and larger cavity. Moreover, the internal quantum efficiency was found to originate from the local coordination states of the Ce centres, independent of composition or molar volume. The comparison of numerical data of the matrix is useful not only for ensuring the homogenous doping of amorphous materials by activators, but also for determining the origin of physical properties.
具有非周期性结构的非晶态材料通常根据其化学成分进行评估，而化学成分并不总是评估物理性质的最佳参数，因此必须考虑另一个更适合性能评估的参数。在此，我们对铈掺杂硼酸锶玻璃的各种结构和物理性质进行了量化，并通过主成分分析研究了它们之间的相关性。我们发现，密度驱动的摩尔体积适用于评估结构数据，而化学成分更适合评估光学和发光数据。此外，富硼玻璃由于铈而表现出更强的发光，表明BO环的比例更高且空腔更大。此外，发现内量子效率源于铈中心的局部配位状态，与成分或摩尔体积无关。基体数值数据的比较不仅有助于确保激活剂对非晶态材料的均匀掺杂，还有助于确定物理性质的起源。
