外文题目: Efficient dual-mode up-conversion and down-shifting emission in -NaYF4:Yb3+,Er3+ microcrystals via ion exchange
作者: Fan, Shaohua; Wang, Shikai; Sun, Hongtao; Sun, Shiyu; Gao, Guojun; Hu, Lili
刊名: J. Am. Ceram. Soc.
年: 2017 卷: 100 期: 7 页： 3061--3069
英文关键词:
fluoride; ion exchange; lanthanide; up-conversion
DOPED NAYF4 NANOCRYSTALS; LUMINESCENCE EFFICIENCY; NANOPARTICLES; PHOSPHOR; GREEN; NAYF4YB3+,ER3+; GLASSES; LIGHT; STATE; BLUE
英文摘要:
We report efficient dual-mode up-conversion (UC) and down-shifting (DS) emission in a single Yb3+/Er3+-co-doped -NaYF4 microcrystals with controlled morphology and size via a simple Na+ ion-exchange modification (IEM) method. IEM well preserves the crystal structure and monodispersed morphology of hydrothermal-synthesized -NaYF4. Meanwhile, IEM gives rise to the significant enhancement of UC emission intensity up to 3800 times and strongly enhanced DS emission intensity of Er3+ and Yb3+ by several times in -NaYF4:Yb3+,Er3+ microcrystals. IEM also strongly prolongs the DS emission lifetimes of Er3+ and Yb3+ in visible and near-infrared region. The enhanced UC and DS emission intensities and prolonged lifetimes in -NaYF4:Yb3+,Er3+ are mainly ascribed to the dispersing of localized Yb3+ and Er3+ clusters during IEM.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1111/jace.14872


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