Górny Agata, Sołtys Marta, Pisarska Joanna, Pisarski Wojciech A
Institute of Chemistry, University of Silesia, Szkolna 9, 40-007 Katowice, Poland.
Institute of Chemistry, University of Silesia, Szkolna 9, 40-007 Katowice, Poland.
Spectrochim Acta A Mol Biomol Spectrosc. 2018 Mar 5;192:140-145. doi: 10.1016/j.saa.2017.11.014. Epub 2017 Nov 6.
Lead borate glasses singly and doubly doped with Tm and Dy were prepared by traditional melt-quenching technique. The emission spectra of rare earths in studied glass systems were registered under different excitation wavelengths. The observed emission bands are located in the visible spectral region. They correspond to D→F (blue) and G→H (blue) transitions of Tm as well as F→H (blue), F→H (yellow) and F→H (red) transitions of Dy. Moreover, the energy transfer process from Tm to Dy was observed. The luminescence bands originating to characteristic transitions of thulium and dysprosium ions are present on emission spectra under direct excitation of Tm. Luminescence lifetimes for the excited states of Tm and Dy ions in lead borate glass were also determined based on decay measurements. The luminescence intensities and lifetimes depend significantly on the relative concentrations of the optically active dopants.
采用传统的熔体淬火技术制备了单掺杂和双掺杂铥（Tm）和镝（Dy）的硼酸铅玻璃。在不同的激发波长下记录了所研究玻璃体系中稀土元素的发射光谱。观察到的发射带位于可见光谱区域。它们对应于Tm的D→F（蓝色）和G→H（蓝色）跃迁以及Dy的F→H（蓝色）、F→H（黄色）和F→H（红色）跃迁。此外，还观察到了从Tm到Dy的能量转移过程。在Tm直接激发下，发射光谱上出现了源自铥离子和镝离子特征跃迁的发光带。基于衰减测量还确定了硼酸铅玻璃中Tm和Dy离子激发态的发光寿命。发光强度和寿命显著取决于光学活性掺杂剂的相对浓度。
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