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Optically- and thermally-stimulated luminescences of Ce-doped SiO2 glasses prepared by spark plasma sintering

机译：火花等离子体烧结制备掺Ce的SiO2玻璃的光学和热激发发光

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摘要

Rare-earth doped phosphors have been used in many applications including radiation measurements. In the latter applications, the radiation photons are converted to light so that we can indirectly detect the radiation using a conventional photodetector. In this work, we have prepared and characterized a Ce-doped SiO2 glass for dosimeter applications. Unlike conventional techniques such as sol-gel synthesis, the sample was prepared by spark plasma sintering. Although the PL emission seems to be only from the Ce3+ ions in the structure, due to the X-ray induced luminescence, we have also observed optically-stimulated luminescence (OSL), and thermally-stimulated luminescence (TSL), owing to a pair of silylenes and a set of dioxasilirane and silylene in addition to Ce3+. We have measured the detector response vs irradiation dose for both the OSL and TSL. The detector response in both cases is linear over the dose range from at least 1 mGy to 2 Gy. Particularly, the sensitivity of TSL is so high that it should be considered to be a good candidate for practical applications. (C) 2016 Elsevier B.V. All rights reserved.
机译：稀土掺杂的磷光体已用于包括辐射测量在内的许多应用中。在后一种应用中，辐射光子被转换为光，因此我们可以使用常规的光电探测器间接检测辐射。在这项工作中，我们准备并表征了用于剂量计应用的Ce掺杂SiO2玻璃。与常规技术（例如溶胶-凝胶合成）不同，样品是通过火花等离子体烧结制备的。尽管PL发射似乎仅来自结构中的Ce3 +离子，但由于X射线诱导的发光，我们还观察到了光激发的发光（OSL）和热激发的发光（TSL），这是由于一对除Ce3 +外，还包括一组硅烷基以及一组二氧杂硅烷基硅烷和甲硅烷基。我们已经测量了OSL和TSL的探测器响应与辐射剂量的关系。两种情况下的检测器响应在至少1 mGy至2 Gy的剂量范围内都是线性的。特别是，TSL的灵敏度非常高，因此应被认为是实际应用的良好选择。 （C）2016 Elsevier B.V.保留所有权利。

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