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On a local (de-)trapping model for highly doped Pr3+ radioluminescent and persistent luminescent nanoparticles
Nanoscale ( IF 5.8 ) Pub Date : 2020-10-02 , DOI: 10.1039/d0nr06577c Gabrielle A. Mandl 1, 2, 3 , David Van der Heggen 4, 5, 6, 7, 8 , Daniel R. Cooper 2, 3, 9, 10, 11 , Jonas J. Joos 4, 5, 6, 7, 8 , Jan Seuntjens 2, 3, 9, 10, 11 , Philippe F. Smet 4, 5, 6, 7, 8 , John A. Capobianco 1, 2, 3
Nanoscale ( IF 5.8 ) Pub Date : 2020-10-02 , DOI: 10.1039/d0nr06577c Gabrielle A. Mandl 1, 2, 3 , David Van der Heggen 4, 5, 6, 7, 8 , Daniel R. Cooper 2, 3, 9, 10, 11 , Jonas J. Joos 4, 5, 6, 7, 8 , Jan Seuntjens 2, 3, 9, 10, 11 , Philippe F. Smet 4, 5, 6, 7, 8 , John A. Capobianco 1, 2, 3
Affiliation
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Trivalent praseodymium exhibits a wide range of luminescent phenomena when doped into a variety of different materials. Herein, radioluminescent NaLuF4:20%Pr3+ nanoparticles are studied. Four different samples of this composition were prepared ranging from 400–70 nm in size. Kinetic studies of radioluminescence as a function of X-ray irradiation time revealed a decrease in the emissions originating from the 1S0 level, due to the formation or optical activation of defects during excitation, and a simultaneous increase in the visible emissions resulting from the lower optical levels. Thermoluminescence measurements elucidated that a local de-trapping mechanism was responsible for the increase in steady state emission and persistent luminescence originating from the lower optical levels. The results and mechanism described through this study serve to provide a novel nanoparticle composition with versatile luminescent properties and provides experimental evidence in favor of a local trapping model.
中文翻译：
在高掺杂Pr3 +放射性发光和持久发光纳米粒子的局部（去陷阱）模型上
当掺入各种不同的材料中时，三价s表现出广泛的发光现象。在本文中，研究了辐射发光的NaLuF 4：20％Pr 3+纳米颗粒。制备了该成分的四个不同样本，大小从400-70 nm不等。放射性发光作为X射线照射时间的函数的动力学研究表明，源自1 S 0的发射减少由于在激发期间缺陷的形成或光学激活，以及由于较低的光学水平而导致的可见光发射的同时增加，导致光学水平升高。热发光测量表明，局部去俘获机制负责稳态发射的增加和源于较低光学水平的持续发光。通过这项研究描述的结果和机理有助于提供一种具有多种发光特性的新型纳米颗粒组合物，并提供有利于局部捕获模型的实验证据。
更新日期：2020-10-08
中文翻译：
在高掺杂Pr3 +放射性发光和持久发光纳米粒子的局部（去陷阱）模型上
当掺入各种不同的材料中时，三价s表现出广泛的发光现象。在本文中，研究了辐射发光的NaLuF 4：20％Pr 3+纳米颗粒。制备了该成分的四个不同样本，大小从400-70 nm不等。放射性发光作为X射线照射时间的函数的动力学研究表明，源自1 S 0的发射减少由于在激发期间缺陷的形成或光学激活，以及由于较低的光学水平而导致的可见光发射的同时增加，导致光学水平升高。热发光测量表明，局部去俘获机制负责稳态发射的增加和源于较低光学水平的持续发光。通过这项研究描述的结果和机理有助于提供一种具有多种发光特性的新型纳米颗粒组合物，并提供有利于局部捕获模型的实验证据。
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