外文题目: Ion-redistribution induced efficient upconversion in beta-NaYF4:20%Yb3+, 2%Er3+ microcrystals with well controlled morphology and size
作者: Fan, Shaohua; Wang, Shikai; Yu, Lu; Sun, Hongtao; Gao, Guojun; Hu, Lili
刊名: Opt. Express
年: 2017 卷: 25 期: 1 页： 180--190
英文关键词:

HIGH QUANTUM YIELD; RED PHOTOCONVERSION; CATION-EXCHANGE; CORE-SHELL; NANOPARTICLES; NANOCRYSTALS; CRYSTALS; LUMINESCENCE; NAYF4YB3+,ER3+; SPECTROSCOPY
英文摘要:
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


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1364/OE.25.000180


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