University of Silesia, Institute of Chemistry, Szkolna 9, 40-007 Katowice, Poland.
Spectrochim Acta A Mol Biomol Spectrosc. 2011 Aug 15;79(4):705-7. doi: 10.1016/j.saa.2010.08.041. Epub 2010 Oct 29.
Visible luminescence of Dy(3+) ions in oxyhalide lead borate glasses was examined. Luminescence spectra show two intense bands at 480 nm and 573 nm due to (4)F(9/2)→(6)H(15/2) (blue) and (4)F(9/2)→(6)H(13/2) (yellow) transitions of Dy(3+). Luminescence decays from (4)F(9/2) state and yellow-to-blue luminescence intensity ratios (Y/B) were analysed with PbX(2) (X=F, Cl) content. An introduction of PbX(2) to the borate glass results in the increasing of (4)F(9/2) lifetime and the decreasing of yellow-to-blue luminescence intensity ratio, which is due to reduction of covalency between Dy(3+) and O(2-)/X(-) ions.
研究了掺镝（Dy(3+)）氧卤化物铅硼酸盐玻璃的可见发光。发光光谱显示两个强带分别位于 480nm 和 573nm，归因于 Dy(3+)的 (4)F(9/2)→(6)H(15/2)（蓝色）和 (4)F(9/2)→(6)H(13/2)（黄色）跃迁。通过 PbX(2)（X=F、Cl）含量分析了来自 (4)F(9/2)态的荧光衰减和黄-蓝发光强度比（Y/B）。向硼酸盐玻璃中引入 PbX(2)会导致 (4)F(9/2)寿命的增加和黄-蓝发光强度比的降低，这是由于 Dy(3+)与 O(2-)/X(-)离子之间的共价键减少。
