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首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >Intense upconversion luminescence and effect of local environment for Tm3+/Yb3+ co-doped novel TeO2-BiCl3 glass system
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Intense upconversion luminescence and effect of local environment for Tm3+/Yb3+ co-doped novel TeO2-BiCl3 glass system

机译：Tm3 + / Yb3 +共掺杂新型TeO2-BiCl3玻璃系统的强烈上转换发光和局部环境的影响

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摘要

We present the results of a study that uses theoretical and experimental methods to investigate the characteristics of the upconversion luminescence of Tm3+/Yb3+ codoped TeO2-BiCl3 glass system as a function of the BiCl3 fraction. These glasses are potentially important in the design of upconversion fiber lasers. Effect of local environment around Tm3+ on upconversion fluorescence intensity was analyzed by theoretical calculations. The structure and spectroscopic properties were investigated in the experiments by measuring the Raman spectra, IR transmission spectra, and absorption and fluorescence intensities at room temperature. The results indicate that blue luminescence quantum efficiency increases with increasing BiCl3 content from 10 to 60 mol%, which were interpreted by the increase of asymmetry of glass structure, decrease of phonon energy and removing of OH- groups. (c) 2005 Elsevier B.V. All rights reserved.
机译：我们提供了使用理论和实验方法来研究Tm3 + / Yb3 +共掺杂的TeO2-BiCl3玻璃系统的上转换发光特性与BiCl3分数的函数关系的研究结果。这些玻璃在上转换光纤激光器的设计中潜在重要。通过理论计算分析了Tm3 +附近局部环境对上转换荧光强度的影响。通过在室温下测量拉曼光谱，红外透射光谱以及吸收和荧光强度，研究了结构和光谱性质。结果表明，随着BiCl3含量从10 mol％增加到60 mol％，蓝色发光量子效率增加，这可以通过玻璃结构不对称性的增加，声子能量的减少和OH-的去除来解释。 （c）2005 Elsevier B.V.保留所有权利。

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