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首页> 外文期刊>Optical Materials >Effect of silver nanoparticles on the 1.53 mu m fluorescence in Er3+/Yb3+ codoped tellurite glasses
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Effect of silver nanoparticles on the 1.53 mu m fluorescence in Er3+/Yb3+ codoped tellurite glasses

机译：银纳米粒子对掺Er3 + / Yb3 +碲酸盐玻璃中1.53μm荧光的影响

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摘要

Improving the spectroscopic properties of rare earth (RE) doped glass materials is a challenging task. In the present work the metallic silver nanoparticles (Ag NPs) were embedded into Er3+/Yb3+ codoped tellurite glasses with composition TeO2-Bi2O3-TiO2, prepared using melt-quenching and subsequent heat-treated techniques, and the improved effect of Ag NPs on the 1.53 gm band fluorescence of Er3+ ions was investigated. About 24 h heat-treatment of Er3+/Yb3+ codoped tellurite glass containing 1 mol % amount of AgNO3 at the temperature 370 degrees C yielded the well-dispersed and near-spherical Ag NPs with similar to 11.4 mu m average diameter as evidenced by transmission electron microscopy (TEM) image. The intense 1.53 mu m band fluorescence was observed in the prepared Er3+/Yb3+ codoped tellurite glasses under the excitation of 980 nm and was further improved with the presence of Ag NPs in the glass matrix, which is attributed to the enhanced local electric field around doped RE ions induced by Ag NPs and the possible energy transfer from Ag NPs to Er3+ ions. The enhanced local electric field was well demonstrated by comparing the variation of emission spectra of hypersensitive probe Eu3+ ions in tellurite glasses with and without Ag NPs. From the Judd-Ofelt analysis, it was also found that the value of S26 intensity parameter increased slightly with the increase of Ag NPs concentration in a certain range, also confirming the possibility of realizing strong fluorescence emission. In addition, the amorphous structural nature was demonstrated by the measured X-ray diffraction (XRD) patterns with no sharp diffraction peak. The enhanced 1.53 mu m band fluorescence indicates that the Er3+/Yb3+ codoped tellurite glass with an appropriate amount of Ag NPs is a promising candidate for the development of Er3+-doped fiber amplifiers (EDFAs) applied in the WDM systems. (C) 2016 Elsevier B.V. All rights reserved.
机译：改善掺杂稀土（RE）的玻璃材料的光谱特性是一项艰巨的任务。在本工作中，将金属银纳米颗粒（Ag NPs）嵌入组成为TeO2-Bi2O3-TiO2的Er3 + / Yb3 +共掺杂碲酸盐玻璃中，该玻璃使用熔融淬火和随后的热处理技术制备，并且Ag NPs改善了银纳米颗粒的形成。研究了Er3 +离子的1.53 gm带荧光。在370摄氏度下，对含1 mol％AgNO3的Er3 + / Yb3 +共掺杂碲酸盐玻璃进行约24小时的热处理，得到了均匀分散的近球形Ag NP，其平均直径类似于透射电子所证明的11.4μm显微镜（TEM）图像。在980 nm的激发下，在制备的Er3 + / Yb3 +共掺杂碲酸盐玻璃中观察到1.53μm的强荧光带，并且由于玻璃基体中存在Ag NPs而进一步改善了荧光，这归因于掺杂周围的局部电场增强Ag NPs诱导的RE离子以及可能的能量从Ag NPs转移到Er3 +离子。通过比较超敏探针Eu3 +离子在含和不含银NP的亚碲酸盐玻璃中的发射光谱变化，可以很好地证明增强的局部电场。从Judd-Ofelt分析中还发现，随着Ag NPs浓度在一定范围内增加，S26强度参数值略有增加，这也证实了实现强荧光发射的可能性。另外，通过测量的X射线衍射（XRD）图案证明了无定形结构性质，没有尖锐的衍射峰。 1.53μm波段增强的荧光表明，具有适量的Ag NP的Er3 + / Yb3 +共掺杂碲酸盐玻璃是开发应用于WDM系统的掺Er3 +光纤放大器（EDFA）的有前途的候选者。 （C）2016 Elsevier B.V.保留所有权利。

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