Ion-redistribution induced efficient upconversion in β-NaYF4:20%Yb3+, 2%Er3+ microcrystals with well controlled morphology and size
Ion-redistribution induced efficient upconversion in β-NaYF4:20%Yb3+, 2%Er3+ microcrystals with well controlled morphology and size
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DOI：
10.1364/oe.25.000180
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发表时间：
2017-01-09
期刊：
影响因子：
3.8
通讯作者：
Hu, Lili
中科院分区：
文献类型：
--
作者：
Fan, Shaohua;Wang, Shikai;Hu, Lili
采用水热法，以CIT和EDTA-2 Na为螯合剂，通过简单的离子交换反应，制备了形貌和尺寸可控的高效绿色上转换（UC）beta-NaYF 4：20%Yb 3+，2%Er 3+微晶。最重要的是，新开发的CIT和EDTA-2Na beta-NaYF 4：20%Yb 3+，2%Er 3+微晶的UC发射效率几乎与固态方法的商业对应物一样强。为了拓展β-NaYF 4：20%Yb3+，2%Er3+微晶光波导在现代微光电子学中的应用，设计了一种概念验证型β-NaYF 4：20%Yb3+，2%Er3+微晶光波导。离子交换反应中的局域离子再分布过程有效地分散了局域聚集的Yb 3+，是β-NaYF 4：20%Yb 3+，2%Er 3+微晶中UC发光显著增强的原因。(C)2016美国光学学会
We develop an efficient green upconversion (UC) beta-NaYF4:20%Yb3+,2% Er3+ microcrystal with well controlled morphology and size by hydrothermal method using two different chelating agents of CIT and EDTA-2Na via a simple ion-exchange reaction. Importantly, the UC emission efficiency of newly developed CIT and EDTA-2Na beta-NaYF4:20%Yb3+,2%Er3+ microcrystals is almost as strong as that of commercial counterpart by solid-state method. A proof-of-concept beta-NaYF4:20%Yb3+,2% Er3+ microcrystal waveguide is demonstrated to extend their applications in modern micro-optoelectronics. The local ion-redistribution process during the ion-exchange reaction, which effectively disperses the locally clustered Yb3+, accounts for the enormously enhanced UC emission in beta-NaYF4:20%Yb3+,2%Er3+ microcrystals. (C) 2016 Optical Society of America