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氟化物（BaF、MgF、AlF）对掺铒镓锗酸盐玻璃结构和发光性能的影响

The Effect of Fluorides (BaF, MgF, AlF) on Structural and Luminescent Properties of Er-Doped Gallo-Germanate Glass.

作者信息

Leśniak Magdalena, Mach Gabriela, Starzyk Bartłomiej, Sadowska Karolina, Ragiń Tomasz, Żmojda Jacek, Kochanowicz Marcin, Kuwik Marta, Miluski Piotr, Jimenez Gloria Lesly, Baranowska Agata, Dorosz Jan, Pisarski Wojciech, Pisarska Joanna, Olejniczak Zbigniew, Dorosz Dominik

机构信息

Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30 Mickiewicza Av., 30-059 Krakow, Poland.

Faculty of Electrical Engineering, Bialystok University of Technology, 45D Wiejska Street, 15-351 Bialystok, Poland.

出版信息

Materials (Basel). 2022 Jul 28;15(15):5230. doi: 10.3390/ma15155230.

DOI:10.3390/ma15155230
PMID:35955165
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9369573/
Abstract

The effect of BaF, MgF, and AlF on the structural and luminescent properties of gallo-germanate glass (BGG) doped with erbium ions was investigated. A detailed analysis of infrared and Raman spectra shows that the local environment of erbium ions in the glass was influenced mainly by [GeO] and [GeO] units. Moreover, the highest number of non-bridging oxygens was found in the network of the BGG glass modified by MgF. The Al MAS NMR spectrum of BGG glass with AlF suggests the presence of aluminum in tetra-, penta-, and octahedral coordination geometry. Therefore, the probability of the I→I transition of Er ions increases in the BGG + MgF glass system. On the other hand, the luminescence spectra showed that the fluoride modifiers lead to an enhancement in the emission of each analyzed transition when different excitation sources are employed (808 nm and 980 nm). The analysis of energy transfer mechanisms shows that the fluoride compounds promote the emission intensity in different channels. These results represent a strong base for designing glasses with unique luminescent properties.

摘要

研究了BaF、MgF和AlF对掺铒镓锗酸盐玻璃（BGG）结构和发光性能的影响。对红外光谱和拉曼光谱的详细分析表明，玻璃中铒离子的局部环境主要受[GeO]和[GeO]单元的影响。此外，在由MgF改性的BGG玻璃网络中发现了数量最多的非桥氧。含AlF的BGG玻璃的Al MAS NMR光谱表明，铝以四面体、五面体和八面体配位几何结构存在。因此，在BGG + MgF玻璃体系中，Er离子从I→I跃迁的概率增加。另一方面，发光光谱表明，当采用不同的激发源（808 nm和980 nm）时，氟化物改性剂会导致每个分析跃迁的发射增强。对能量转移机制的分析表明，氟化物化合物促进了不同通道的发射强度。这些结果为设计具有独特发光性能的玻璃奠定了坚实基础。

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