Y2-x-yBixEuyMgTiO6荧光粉的发光特性研究

TL271%TL818; 双钙钛矿因其结构灵活、易于掺杂、热稳定性好等优点,成为近几年的研究热点.稀土掺杂双钙钛矿基质材料的光致发光研究常见报道,但和热释光有关的研究较少.本文采用高温固相法合成了Bi3+和Eu3+共掺的Y2-x-yBixEuyMgTiO6(0≤x<1,0≤y<1)系列样品,并测量了样品的X射线衍射谱(X-ray Diffraction,XRD)、光致发光光谱(Photoluminescence,PL)和热释光谱(Thermoluminescence,TL).XRD分析表明:样品的晶体结构均为单斜晶系P21/n,Bi3+和Eu3+通过替代Y3+而掺入Y2MgTiO6...

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Published in核技术 Vol. 46; no. 6; pp. 60 - 67
Main Authors 刘昊, 熊正烨, 曾才兴, 张泽锋, 蹇辰茜, 郭竞渊
Format Journal Article
LanguageChinese
Published 广东海洋大学 电子与信息工程学院 湛江 524088%广东海洋大学 化学与环境学院 湛江 524088 01.06.2023
Subjects
激活能
热释光
光致发光
Y2MgTiO6
稀土掺杂
Online AccessGet full text
ISSN0253-3219
DOI10.11889/j.0253-3219.2023.hjs.46.060501

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Abstract TL271%TL818; 双钙钛矿因其结构灵活、易于掺杂、热稳定性好等优点,成为近几年的研究热点.稀土掺杂双钙钛矿基质材料的光致发光研究常见报道,但和热释光有关的研究较少.本文采用高温固相法合成了Bi3+和Eu3+共掺的Y2-x-yBixEuyMgTiO6(0≤x<1,0≤y<1)系列样品,并测量了样品的X射线衍射谱(X-ray Diffraction,XRD)、光致发光光谱(Photoluminescence,PL)和热释光谱(Thermoluminescence,TL).XRD分析表明:样品的晶体结构均为单斜晶系P21/n,Bi3+和Eu3+通过替代Y3+而掺入Y2MgTiO6中;PL表明:样品最佳掺杂浓度为x=0.01、y=0.20,该样品在620 nm附近有较强的红光发射(对应Eu3+的5D0→7F2跃迁),并伴有长余辉;测定不同浓度Bi3+和Eu3+掺杂样品的TL曲线也观察到Y1.79Bi0.01Eu0.20MgTiO6的热释光灵敏度最高,样品在510 K和610 K附近有两个显著的TL峰;热释光谱比荧光谱更为丰富,Eu3+的5D0→7FJ(J=1,2,3,4)跃迁均可被观测到,样品的TL光强与辐照剂量在2～1 000 Gy范围内具有良好的线性关系.采用不同预热温度(Tm-Tstop)和计算机拟合(Glow Curve Deconvolution,GCD)两种方法分析样品的TL动力学参数,发现样品中热释光陷阱深度从0.80 eV延伸到1.40 eV.上述测试和分析结果表明:热释光谱比荧光谱更为丰富;Y1.79Bi0.01Eu0.20MgTiO6荧光粉可作为大剂量检测的热释光剂量计材料.
AbstractList TL271%TL818; 双钙钛矿因其结构灵活、易于掺杂、热稳定性好等优点,成为近几年的研究热点.稀土掺杂双钙钛矿基质材料的光致发光研究常见报道,但和热释光有关的研究较少.本文采用高温固相法合成了Bi3+和Eu3+共掺的Y2-x-yBixEuyMgTiO6(0≤x<1,0≤y<1)系列样品,并测量了样品的X射线衍射谱(X-ray Diffraction,XRD)、光致发光光谱(Photoluminescence,PL)和热释光谱(Thermoluminescence,TL).XRD分析表明:样品的晶体结构均为单斜晶系P21/n,Bi3+和Eu3+通过替代Y3+而掺入Y2MgTiO6中;PL表明:样品最佳掺杂浓度为x=0.01、y=0.20,该样品在620 nm附近有较强的红光发射(对应Eu3+的5D0→7F2跃迁),并伴有长余辉;测定不同浓度Bi3+和Eu3+掺杂样品的TL曲线也观察到Y1.79Bi0.01Eu0.20MgTiO6的热释光灵敏度最高,样品在510 K和610 K附近有两个显著的TL峰;热释光谱比荧光谱更为丰富,Eu3+的5D0→7FJ(J=1,2,3,4)跃迁均可被观测到,样品的TL光强与辐照剂量在2～1 000 Gy范围内具有良好的线性关系.采用不同预热温度(Tm-Tstop)和计算机拟合(Glow Curve Deconvolution,GCD)两种方法分析样品的TL动力学参数,发现样品中热释光陷阱深度从0.80 eV延伸到1.40 eV.上述测试和分析结果表明:热释光谱比荧光谱更为丰富;Y1.79Bi0.01Eu0.20MgTiO6荧光粉可作为大剂量检测的热释光剂量计材料.
Author 刘昊
熊正烨
曾才兴
蹇辰茜
张泽锋
郭竞渊
AuthorAffiliation 广东海洋大学 电子与信息工程学院 湛江 524088%广东海洋大学 化学与环境学院 湛江 524088
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Author_FL XIONG Zhengye
ZENG Caixing
GUO Jingyuan
ZHANG Zefeng
JIAN Chenxi
LIU Hao
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DocumentTitle_FL Luminescence characteristics of Y2-x-yBixEuyMgTiO6 phosphors
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Keywords 激活能
热释光
光致发光
Y2MgTiO6
稀土掺杂
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