Intrinsic single-band upconversion emission in colloidal Yb/Er(Tm):Na3Zr(Hf)F7 nanocrystals.

نویسندگان

  • Daqin Chen
  • Lei Lei
  • Rui Zhang
  • Anping Yang
  • Ju Xu
  • Yuansheng Wang
چکیده

Novel Yb/Er(Tm):Na(3)MF(7) (M = Zr, Hf) nanocrystals with intrinsic single-band upconversion emission, in contrast to the routine lanthanide-doped fluoride nanocrystals which show typical multi-band upconversion emissions, are reported for the first time. Specifically, the red upconversion intensity of the Yb/Er:Na(3)ZrF(7) nanocrystals is about 5 times as high as that of the hexagonal Yb/Er:NaYF(4) ones with a similar crystal size.

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عنوان ژورنال:
  • Chemical communications

دوره 48 86  شماره 

صفحات  -

تاریخ انتشار 2012