Effects of Crystal Structure on Up-conversion Luminescence in Er<sup>3+</sup>/Yb<sup>3+</sup> Co-doped SrTa<sub>4</sub>O<sub>11</sub>

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Author(s)

    • Tamura Sayaka
    • Graduate School of Science and Technology, Tokai University
    • Iwaoka Michio
    • Graduate School of Science and Technology, Tokai University
    • Kobayasi Makoto
    • Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
    • Kakihana Masato
    • Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

Abstract

<p>The effects of the host crystal structure of an SrTa<sub>4</sub>O<sub>11</sub>:Er<sup>3+</sup>/Yb<sup>3+</sup> up-conversion (UC) phosphor on its luminescence properties were investigated using the tetragonal tungsten bronze (TTB) and hexagonal polymorphs of the SrTa<sub>4</sub>O<sub>11</sub> host. Hexagonal SrTa<sub>4</sub>O<sub>11</sub>:Er<sup>3+</sup>/Yb<sup>3+</sup> showed bright luminescence, whereas the UC emission intensity of TTB SrTa<sub>4</sub>O<sub>11</sub>:Er<sup>3+</sup>/Yb<sup>3+</sup> was very weak, corresponding to ≈1% that of the hexagonal phase. This result was attributed to the local crystal structure around the rare-earth ions in the host lattice.</p>

Journal

  • Chemistry Letters

    Chemistry Letters 47(10), 1282-1284, 2018

    The Chemical Society of Japan

Codes

  • NII Article ID (NAID)
    130007496120
  • Text Lang
    ENG
  • ISSN
    0366-7022
  • Data Source
    J-STAGE 
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