Enhanced red upconversion luminescence in Yb-Er codoped NaYF4 nanocrystals

Weiye Song, Xueqing Bi, Xingyuan Guo, Shushen Liu, Weiping Qin

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

In this work the effects of NaYF4:Yb,Er (NYE) structure on the enhanced red upconversion luminescence (UC) was investigated. α-NYE nanocrystals (NCs) and β-NYE NCs were fabricated by a high temperature decomposition reaction method. The prepared NCs were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and photoluminescence (PL) spectroscopy. The results show that the red UC luminescence of α-NYE NCs is significantly enhanced compared with that of β-NYE. Furthermore, a possible energy transfer mechanism was proposed on the basis of our experimental results.

Original languageEnglish
Pages (from-to)3961-3964
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume16
Issue number4
DOIs
StatePublished - 1 Apr 2016
Externally publishedYes

Keywords

  • NaYF
  • Nanocrystals
  • Rare earth ions
  • Upconversion luminescence

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