Colloidal Tm3+/Yb3+-Doped LiYF4 Nanocrystals: Multiple Luminescence Spanning the UV to NIR Regions via Low-Energy Excitation
Colloidal Tm3+/Yb3+-Doped LiYF4 Nanocrystals: Multiple Luminescence Spanning the UV to NIR Regions via Low-Energy Excitation
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DOI：
10.1002/adma.200901174
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发表时间：
2009-10-26
影响因子：
29.4
通讯作者：
Capobianco, John A.
中科院分区：
文献类型：
--
作者：
Mahalingam, Venkataramanan;Vetrone, Fiorenzo;Capobianco, John A.
采用热分解法合成了高分散性的Tm 3 +/Yb 3+掺杂LiYF 4纳米晶。在用NIR二极管激光器（980 nm）激发时，纳米晶体的稀分散体在跨越深UV到NIR的区域中表现出几种强发射，所有发射都源自单一掺杂剂/敏化剂（Tm 3 +/Yb 3+）组合。该材料被设想在防伪、生物医学和基于溶液的闪烁应用中具有潜在的兴趣。
Highly dispersible Tm3+/Yb3+-doped LiYF4 nanocrystals were synthesized using a thermal decomposition method. Upon excitation with a NIR diode laser (980nm), the dilute dispersion of the nanocrystals exhibits several strong emissions in regions spanning the deep-UV to NIR, all originating from a single dopant/sensitizer (Tm3+/Yb3+) combination. The material is envisioned to have potential interest in anti-counterfeiting, biomedicine and solution-based scintillation applications.