Effects of crystal Structure on Up-conversion luminescence in Er3+/Yb3+ Co-doped SrTa4O11

Sayaka Tamura, Michio Iwaoka, Yasushi Sato, Makoto Kobayasi, Masato Kakihana, Koji Tomita

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1 Citation (Scopus)


The effects of the host crystal structure of an SrTa4O11: Er3+/Yb3+ up-conversion (UC) phosphor on its luminescence properties were investigated using the tetragonal tungsten bronze (TTB) and hexagonal polymorphs of the SrTa4O11 host. Hexagonal SrTa4O11:Er3+/Yb3+ showed bright luminescence, whereas the UC emission intensity of TTB SrTa4O11:Er3+/Yb3+ was very weak, corresponding to μ1% that of the hexagonal phase. This result was attributed to the local crystal structure around the rare-earth ions in the host lattice.

Original languageEnglish
Pages (from-to)1282-1284
Number of pages3
JournalChemistry Letters
Issue number10
Publication statusPublished - 2018


  • Crystal structure
  • SrTa4O11
  • Up-conversion phosphor

ASJC Scopus subject areas

  • Chemistry(all)

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