Luminescence and Scintillation Properties at the Nanoscale
Luminescence and Scintillation Properties at the Nanoscale
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DOI：
10.1109/tns.2009.2035697
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发表时间：
2010-06-01
影响因子：
1.8
通讯作者：
Pillonnet, Anne
中科院分区：
文献类型：
--
作者：
Dujardin, Christophe;Amans, David;Pillonnet, Anne
本文综述了纳米粒子（NP），特别是掺杂绝缘体的发光和闪烁特性。发光光谱是探测纳米尺度物质的合适工具。发光也是闪烁过程的最后阶段。报告了 NP 中发生的比表面和结构效应。讨论了它们对 NP 发光特性的影响。部分效果与制备方法有关。另一方面，描述了可以改变光学性质的纳米结构的一些固有性质：量子限制和介电限制。还讨论了高能激发下的响应。看来它们的大小可以用作描述高能激发后弛豫过程引起的电子激发的空间分布的工具。最后，提出了通过软化学途径生长基于小纳米颗粒团聚的透明散装材料的潜力。这是开发闪烁材料的一种有前途的方法。
This contribution is a review of the luminescence and scintillation properties of nanoparticles (NP), particularly doped insulators. Luminescence spectroscopy is an appropriate tool to probe matter at the nanoscale. Luminescence is also the last stage of the scintillation process. Specific surface and structural effects occurring in NP are reported. Their consequences on the NP luminescence properties are discussed. Parts of the effects are related to the preparation method. On the other hand some intrinsic properties of the nanostructures which can modify the optical properties are described: quantum confinement and dielectric confinement. The response under high-energy excitation is also discussed. It appears that their size can be used as a tool to describe the spatial distribution of electronic excitations induced by the relaxation process after the high-energy excitation. Finally, potentiality to grow transparent bulk materials based on small Nps agglomeration via soft chemistry route is presented. It is a promising approach toward the development of scintillating materials.