Institute of Chemistry, University of Silesia, Szkolna 9, 40-007 Katowice, Poland.
Spectrochim Acta A Mol Biomol Spectrosc. 2011 Aug 15;79(4):696-700. doi: 10.1016/j.saa.2010.04.022. Epub 2010 Apr 28.
Correlation between structure and optical properties of rare earth ions in lead borate glasses and glass-ceramics was evidenced by X-ray-diffraction, Raman, FT-IR and luminescence spectroscopy. The rare earths were limited to Eu(3+) and Er(3+) ions. The observed BO(3)↔BO(4) conversion strongly depends on the relative PbO/B(2)O(3) ratios in glass composition, giving important contribution to the luminescence intensities associated to (5)D(0)-(7)F(2) and (5)D(0)-(7)F(1) transitions of Eu(3+). The near-infrared luminescence and up-conversion spectra for Er(3+) ions in lead borate glasses before and after heat treatment were measured. The more intense and narrowing luminescence lines suggest partial incorporation of Er(3+) ions into the orthorhombic PbF(2) crystalline phase, which was identified using X-ray diffraction analysis.
通过 X 射线衍射、拉曼、傅里叶变换红外和发光光谱研究了硼酸铅玻璃和微晶玻璃中稀土离子的结构与光学性能之间的关系。研究中仅限于 Eu(3+)和 Er(3+)离子。观察到的 BO(3)↔BO(4)转换强烈依赖于玻璃组成中相对的 PbO/B(2)O(3)比，这对与 Eu(3+)的(5)D(0)-(7)F(2)和(5)D(0)-(7)F(1)跃迁相关的发光强度有重要贡献。测量了热处理前后硼酸铅玻璃中 Er(3+)离子的近红外发光和上转换光谱。发光线强度增加且变窄表明 Er(3+)离子部分掺入四方 PbF(2)晶相，这通过 X 射线衍射分析得到了证实。
