Monodisperse, shape-selective synthesis of YF3:Yb3+/Er3+ nano/microcrystals and strong upconversion luminescence of hollow microcrystals

G. Murali, Sandeep Kaur, Young Cheol Chae, Manda Ramesh, Jongwoo Kim, Yung Doug Suh, Dong Kwon Lim, Seung Hee Lee

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Synthesizing upconversion materials with 3-dimensional structures is of fundamental importance in understanding the relationship between their optical properties and their structures. In this paper, we report a simple but useful synthetic method to produce highly monodisperse 3-dimensional YF3:Yb3+/Er3+ microcrystals showing variable upconversion efficiencies. By tuning the pH, precursor salt, and solvent, the shapes of the YF3:Yb3+/Er3+ crystals could be tuned from hollow hexagon to hollow dumbbell, tetragonal bipyramid, and truncated tetragonal bipyramid structures. The upconversion efficiency showed significant dependence on the structure of YF3:Yb3+/Er3+; hollow structures revealed a large enhancement in the luminescence intensity. The upconversion efficiency of the structures decreased in the order hollow hexagon > hollow dumbbell > tetragonal bipyramid > truncated tetragonal bipyramid.

Original languageEnglish
Pages (from-to)24255-24262
Number of pages8
JournalRSC Advances
Issue number39
Publication statusPublished - 2017

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)


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