Role of organic molecules on upconversion luminescence of LaF3 nanoparticles

Role of organic molecules on upconversion luminescence of LaF3 nanoparticles
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有机分子对 LaF3 纳米粒子上转换发光的作用

DOI:
10.1016/j.matlet.2009.02.067
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发表时间:
2009-06
期刊:
影响因子:
3
通讯作者:
Zeng, Qinghui
Zeng, Qinghui
中科院分区:
材料科学3区
文献类型:
--
作者:
Yu, Yi;Zhang, Hong;Kong, Xianggui;Sun, Yajuan;Qu, Yuqiu;Zeng, Qinghui

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合成并研究了Yb和Er共掺杂的laf3纳米晶体。不同配体覆盖的纳米晶体的上转换发光性能主要取决于配体,特别是对非辐射弛豫敏感的红光发射。配体与稀土离子的螯合作用会影响样品的形貌和荧光性能。螯合配体将RE离子与周围环境隔离,从而减少非辐射猝灭。因此,样品的上转换发光特性也会发生相应的变化。
Yb and Er codoped LaF3nanocrystals were synthesized and studied. The upconversion luminescence properties of nanocrystals capped with different ligands are mainly dependent on the ligands, especially for the red emission which is sensitive to the nonradiative relaxation. The chelation between the ligands and rare earth ions can affect the morphology and fluorescent properties of samples. The chelating ligands will reduce the nonradiative quenching by isolating the RE ions from surrounding environment. So the upconversion luminescence properties of the samples vary correspondingly.
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