节点文献

SrB₆O₁₀∶Tb的热释光性质研究

Thermoluminescence Properties of SrB₆O₁₀∶Tb

推荐 CAJ下载
PDF下载
不支持迅雷等下载工具，请取消加速工具后下载。

【Author】 Liu Liyan~1,Hao Jingquan~1,Li Chengyu~1,Tang Qiang~2,Zhang Chunxiang~2,Su Qiang~(1,3*),Wang Shubin~1 (1.Key Laboratory of Rare Earth Chemistry and Physics,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;2.Department of Physics,Sun Yat-Sen University,Guangzhou 510275,China;3.State Key Laboratory of Optoelectronic Materials and Technology,School of Chemistry and Chemical Engineering,Sun Yat-Sen University,Guangzhou 510275,China)

【机构】中国科学院长春应用化学研究所稀土化学与物理重点实验室；中山大学物理系；中国科学院长春应用化学研究所稀土化学与物理重点实验室吉林长春130022；吉林长春130022；广东广州510275；吉林长春130022 光电子材料与技术国家重点实验室；中山大学化学与化工学院；吉林长春130022；

【摘要】通过高温固相法合成了SrB6O10∶Tb热释光磷光体,并系统地研究了Ce3+,Li+共掺杂,Tb3+掺杂浓度以及60Coγ射线辐照剂量对其热释发光的影响,同时观察了其热释光发射。研究发现:Ce3+,Li+共掺杂对SrB6O10∶Tb磷光体的热释光灵敏度并没有提高。Tb3+掺杂浓度对SrB6O10热释光磷光体的灵敏度有一定影响:在从1%~10%(摩尔分数)的Tb3+掺杂浓度范围内,2%为最佳掺杂浓度。在此掺杂浓度条件下,用Chen的峰形法评估了此磷光体的动力学参数,发现其遵守二级动力学;增加辐照剂量,热释光发射也随之增强,并在所研究的剂量范围内呈线性变化;在其三维热释光发射谱中,观察到了Tb3+离子的特征发射。更多还原

【Abstract】 SrB₆O₁₀∶Tb phosphor was synthesized by high-temperature solid state reaction.The influences of Ce³⁺ or Li⁺ as a co-dopant,Tb³⁺ concentration and irradiation dose exposure on TL of SrB₆O₁₀∶Tb were investigated.Results show Ce³⁺ or Li⁺ as a co-dopant can not improve the TL sensitivity of SrB₆O₁₀∶Tb phosphor.TL response is Tb³⁺ dopant concentration dependent with optimum value 2%.With these,Tb³⁺ concentrations,the kinetic parameters of SrB₆O₁₀∶Tb are calculated employing the peak shape method and found it obeys the second order kinetics;TL emission strengthens with irradiation exposure and is linear in the irradiation dose range of 50～200 Gy;characteristic Tb³⁺ ion emission is observed in 3D TL spectrum.更多还原