| Eu:Lu2O3透明闪烁陶瓷的制备与性能 |
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| 引用本文： | 王静,葛烨,解伟锋,陈昊鸿,李江.Eu:Lu2O3透明闪烁陶瓷的制备与性能[J].人工晶体学报,2021,50(3):435-440. |
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| 作者姓名： | 王静 葛烨 解伟锋 陈昊鸿 李江 |
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| 作者单位： | 1.安徽理工大学材料科学与工程学院,淮南 231001;2.中国科学院上海硅酸盐研究所,透明光功能无机材料重点实验室,上海 200050 |
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| 基金项目： | 中国科学院透明光功能无机材料重点实验室开放课题(KLTOIM201609) |
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| 摘 要： | 采用湿化学法合成了Eu原子掺量5%的Lu2O3陶瓷前驱体,通过SEM、XRD研究了煅烧前后前驱体和1 100 ℃煅烧4 h后粉体的形貌、结构以及物相。结果表明煅烧后的粉体为纳米类球形、高分散且结晶性良好的颗粒。颗粒尺寸为68.5 nm。使用煅烧后的粉体为原料,在1 650 ℃真空烧结30 h制备了高透过率的Eu:Lu2O3陶瓷,晶粒尺寸为46 μm,在611 nm处的直线透过率可以达到66.3%。此外对陶瓷的吸收曲线、光致激发和发射光谱特性以及X射线激发发射光谱进行研究。可观察到,Eu:Lu2O3陶瓷存在基质和激活离子两类吸收,光致发光光谱和X射线激发发射光谱均可以看出Eu:Lu2O3陶瓷存在极强的5D0→7F2跃迁发光,位于611 nm处。对比商业的BGO单晶的X射线发射光谱,可得本实验中制备的陶瓷的光输出为85 000 ph/MeV。Eu:Lu2O3陶瓷本身有着高X射线以及高能粒子的阻止能力,结合高光输出特性,表明Eu:Lu2O3陶瓷在X射线成像等领域具有巨大的潜在应用价值。
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| 关 键 词： | Eu:Lu2O3 闪烁陶瓷 透明陶瓷 真空烧结 光致激发 发射光谱 光输出 |
| 收稿时间： | 2020-12-14 |
Preparation and Properties of Transparent Eu:Lu2O3 Scintillation Ceramics |
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| WANG Jing,GE Ye,XIE Weifeng,CHEN Haohong,LI Jiang.Preparation and Properties of Transparent Eu:Lu2O3 Scintillation Ceramics[J].Journal of Synthetic Crystals,2021,50(3):435-440. |
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| Authors: | WANG Jing GE Ye XIE Weifeng CHEN Haohong LI Jiang |
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| Affiliation: | 1. College of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 231001, China;2. Key Laboratory of Inorganic Materials with Transparent Light Function, Shanghai Institute of Ceramics,Chinese Academy of Sciences, Shanghai 200050, China |
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| Abstract: | The 5% Eu:Lu2O3 ceramic precursor was synthesized by wet chemical method, and the morphologies, microstructures and phases of both Eu:Lu2O3 ceramic precursor and the calcined Eu:Lu2O3 ceramic powders were studied by SEM and XRD. The results show that the powders are spherical, well-dispersed and good crystalline. The particle size is calculated to be about 68.5 nm. Using the powders calcined at 1 100 ℃ for 4 h as raw material, the highly transparent Eu:Lu2O3 ceramics were successfully fabricated by vacuum sintering at 1 650 ℃ for 30 h.The grain size is calculated to be about 46 μm, and in-line transmittance of the Eu:Lu2O3 ceramics reaches 66.3% at 611 nm. What's more, the absorption curve, the excitation spectrum, the emission spectrum and the X-ray excited emission spectrum of the Eu:Lu2O3 ceramics were studied. It can be observed that the absorption curve of Eu:Lu2O3 ceramics is consisted of the matrical absorption and active ion absorption. It can be seen from the photo-luminescence emission spectrum and X-ray excited emission spectrum of the Eu:Lu2O3 ceramics that an extremely strong peak is located at 611 nm, corresponding to the 5D0→7F2 transition of Eu3+. By comparison with the BGO crystal, the light output of the Eu:Lu2O3 ceramics is estimated to be about 85 000 ph/MeV. Eu:Lu2O3 ceramics have an excellent X-ray stopping power due to its high density and effective atomic number. It is indicated that Eu:Lu2O3 ceramics are a potential ceramic scintillator for the application of X-ray detection imaging combined with the characteristics of high light output. |
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| Keywords: | Eu:Lu2O3 scintillation ceramics transparent ceramics vacuum sintering photo-luminescence emission spectrum light output |
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