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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Preparation and optical properties of Eu3+ doped and Er3+/Yb3+ codoped oxyfluoride glass ceramics containing Ba-1 (-) xLuxF2+ (x) nanocrystals
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Preparation and optical properties of Eu3+ doped and Er3+/Yb3+ codoped oxyfluoride glass ceramics containing Ba-1 (-) xLuxF2+ (x) nanocrystals

机译：含Ba-1（-）xLuxF2 +（x）纳米晶体的Eu3 +掺杂和Er3 + / Yb3 +共掺杂的氟氧化物玻璃陶瓷的制备和光学性能

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摘要

Novel transparent oxyfluoride glass ceramics were prepared and crystal phase evolution from cubic BaF2 to BaxLu1-xF2+x was achieved by the gradual substitution LuF3 for BaF2 in the glass compositions in mol% of 65SiO(2)-14.5B(2)O(3)-11.5Na(2)O-(9-x)BaF2-xLuF(3) (x = 0, 1, 2, 3). The corresponding crystallization mechanism was explored according to FTIR and XRD results. The enhanced emission intensity, obvious Stark splitting in the emission spectra and long fluorescence decay lifetimes of Eu3+ ions evidenced the incorporation of Eu3+ ions into the precipitated fluoride nanocrystals. Especially, along with the gradual substitution LuF3 for BaF2, much more Eu3+ ions were partitioned into the precipitated Ba1-xLuxF2+x nanocrystals, which provided a novel strategy of controlling the ionic distribution and enhancing the luminescence efficiency of rare earth ions in the oxyfluoride glass ceramics. Temperature dependent characteristics of upconversion luminescence of Er3+/Yb3+ ions in the oxyfluoride glass ceramics was investigated and a high thermal sensitivity was obtained based on the fluorescence intensity ratio (FIR) technique, which suggested that this material was a promising candidate for the optical temperature sensors. (c) 2015 Elsevier B.V. All rights reserved.
机译：制备了新型的透明氟氧化物玻璃陶瓷，并通过逐步取代LuF3以摩尔百分比计的65SiO（2）-14.5B（2）O（3）取代了玻璃中的BaF2，从而实现了从立方BaF2到BaxLu1-xF2 + x的晶相演化。 ）-11.5Na（2）O-（9-x）BaF2-xLuF（3）（x = 0、1、2、3）。根据FTIR和XRD结果探索了相应的结晶机理。增强的发射强度，发射光谱中明显的Stark分裂以及Eu3 +离子的长荧光衰变寿命证明了Eu3 +离子掺入沉淀的氟化物纳米晶体中。特别是随着LuF3逐渐被BaF2取代，更多的Eu3 +离子被分配到沉淀的Ba1-xLuxF2 + x纳米晶体中，这为控制离子分布并提高氟离子玻璃中稀土离子的发光效率提供了新的策略。陶瓷。研究了氟氧化物玻璃陶瓷中Er3 + / Yb3 +离子的上转换发光的温度依赖性，并基于荧光强度比（FIR）技术获得了较高的热敏性，这表明该材料是光学温度传感器的有希望的候选者。 （c）2015 Elsevier B.V.保留所有权利。

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