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首页> 外文期刊>Optical Materials >Spectroscopic study of Pr~(3+) ions doped Zinc Lead Tungsten Tellurite glasses for visible photonic device applications
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Spectroscopic study of Pr~(3+) ions doped Zinc Lead Tungsten Tellurite glasses for visible photonic device applications

机译：Pr〜（3+）离子掺杂锌铅钨碲酸盐玻璃的光谱研究

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摘要

Zinc Lead Tungsten Tellurite (ZnPbWTe) glasses doped with different Pr3+ ion concentrations having the composition 5ZnO + 15PbO + 20WO(3) (60-x)TeO2 + xPr(6)O(11) (where x = 0.5, 1, 1.5, 2.0 and 2.5 mol%) were prepared by using sudden quenching technique and characterized to understand their visible emission characteristic features using spectroscopic techniques such as absorption, excitation and emission. The Judd-ofelt (J-O) theory has been applied to the absorption spectral features with an aim to evaluate various radiative properties for the prominent fluorescent levels of Pr(3+)ions in the as-prepared glasses. The emission spectra recorded for the as-prepared glasses under 468 nm excitation show three prominent emission transitions P-3(0) -> H-3(6), P-3(0) -> F-3(2) and P-3(1) -> F-3(4), of which P-3(0) -> F-3(2) observed in visible red region (648 nm), is relatively more intense. The intensity of P-3(0) -> F-3(2) emission transition in the titled glasses increases up to 1mol% of Pr3+ ions and beyond concentration quenching is observed. Branching ratios (beta(R)) and emission cross-sections (sigma(se)) were estimated for P-3(0) -> F-3(2) transition to understand the luminescence efficiency in visible red region (648 nm). The CIE chromaticity coordinates were also evaluated in order to understand the suitability of these glasses for visible red luminescence devices. From the emission cross-sections, quantum efficiency and CIE coordinates, it was concluded that 1 mol% of Pr3+ ions in ZnPbWTe glasses are quite suitable for preparing visible reddish orange luminescent devices. (C) 2018 Elsevier B.V. All rights reserved.
机译：掺杂了不同Pr3 +离子浓度的锌铅钨碲酸盐（ZnPbWTe）玻璃，其成分为5ZnO + 15PbO + 20WO（3）（60-x）TeO2 + xPr（6）O（11）（其中x = 0.5、1、1.5，通过突然猝灭技术制备2.0和2.5mol％），并通过吸收，激发和发射等光谱技术表征其可见发射特征。 Judd-ofelt（J-O）理论已应用于吸收光谱特征，旨在评估所制备玻璃中Pr（3+）离子的显着荧光水平的各种辐射特性。制备的玻璃在468 nm激发下记录的发射光谱显示三个突出的发射跃迁P-3（0）-> H-3（6），P-3（0）-> F-3（2）和P -3（1）-> F-3（4），在可见红色区域（648 nm）中观察到的P-3（0）-> F-3（2）相对更强。标题玻璃中P-3（0）-> F-3（2）发射跃迁的强度最多增加1mol％的Pr3 +离子，并且观察到超过浓度猝灭。估计了P-3（0）-> F-3（2）过渡的支化比（beta（R））和发射截面（sigma（se）），以了解可见红色区域（648 nm）的发光效率。 。还评估了CIE色度坐标，以了解这些玻璃对于可见红色发光设备的适用性。从发射截面，量子效率和CIE坐标可以得出结论，ZnPbWTe玻璃中1摩尔％的Pr3 +离子非常适合制备可见的红橙色发光器件。 （C）2018 Elsevier B.V.保留所有权利。

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