Sunlight-activated yellow long persistent luminescence from Nb-doped Sr3SiO5:Eu2+ for warm-color mark applications
Sunlight-activated yellow long persistent luminescence from Nb-doped Sr3SiO5:Eu2+ for warm-color mark applications
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用于暖色标记应用的 Nb 掺杂 Sr3SiO5:Eu2 阳光激活黄色长余辉发光
DOI：
10.1039/c9tc05880j
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发表时间：
2020-01
影响因子：
6.4
通讯作者：
Liu Quanlin
中科院分区：
文献类型：
--
作者：
Wang Zhizhen;Song Zhen;Ning Lixin;Liu Quanlin
与绿色或蓝色材料相比，标牌标记和医学成像强烈需要暖色持久发光材料。在此，我们报道了一种新型黄色长余辉荧光粉，Nb掺杂Sr3SiO5:Eu2+，其峰值波长为∼580 nm，在紫外线辐射后在0.32 mcd m−2阈值下余辉时间超过14小时。热释光（TL）、热释光激发（TLE）、电子顺磁共振（EPR）测量和密度泛函理论（DFT）计算的结合表明，持续发光增强归因于铌诱导的氧空位显着增加，氧空位充当具有适当陷阱深度的电子捕获中心。这种材料可以实现多组随时间变化的颜色变化图像，具有作为防伪和指示标记的潜在应用。这项研究还将过渡金属（TM）离子的应用扩展到持久发光领域，并将激发对TM替代品的进一步探索，以设计和改进具有优越性能的硅酸盐或铝硅酸盐持久荧光粉。
Warm-color persistent luminescent materials are strongly desired for signage markings and medical imaging in comparison with green or blue counterparts. Herein we report a novel yellow long-persistent phosphor, Nb-doped Sr3SiO5:Eu2+, with a peak wavelength of ∼580 nm and persistence time of more than 14 hours at the 0.32 mcd m−2 threshold value after UV radiation. A combination of thermoluminescence (TL), thermoluminescence excitation (TLE), electron paramagnetic resonance (EPR) measurements and density functional theory (DFT) calculations reveals that the persistent luminescence enhancement is attributed to a significant Nb-induced increase of oxygen vacancies that act as electron trapping centers with appropriate trap depths. Groups of time-dependent color-change images are realized with this material, which has potential applications as anti-counterfeit and indicator marks. This investigation also expands the application of transition metal (TM) ions to the field of persistent luminescence and would motivate further exploration of TM substitutions to design and improve silicate or aluminosilicate persistent phosphors with superior performance.
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影响因子：
1.8
作者：
W. Jia;Huabiao Yuan;Lizhu Lu;Huimin Liu;W. Yen
通讯作者：
W. Jia;Huabiao Yuan;Lizhu Lu;Huimin Liu;W. Yen
影响因子：
2.7
作者：
Grau-Crespo, R.;Hamad, S.;de Leeuw, N. H.
通讯作者：
de Leeuw, N. H.
影响因子：
3.6
作者：
Pengyue Zhang;Zhanglian Hong;Min-quan Wang;Xianping Fang;G. Qian;Zhiyu Wang
通讯作者：
Pengyue Zhang;Zhanglian Hong;Min-quan Wang;Xianping Fang;G. Qian;Zhiyu Wang
DOI：
10.3390/ma6072789
发表时间：
2013-07-12
期刊：
Materials (Basel, Switzerland)
影响因子：
--
作者：
Van den Eeckhout K;Poelman D;Smet PF
通讯作者：
Smet PF
影响因子：
3.2
作者：
Xiaoyuan Sun;Jiahua Zhang;Xia Zhang;Yongshi Luo;Z. Hao;Xiaojun Wang
通讯作者：
Xiaoyuan Sun;Jiahua Zhang;Xia Zhang;Yongshi Luo;Z. Hao;Xiaojun Wang