Luminescence enhancement of LiSrPO4:Eu2+ phosphor by Mg2+ ion addition

Shinnosuke Kamei, Tomoki Hatsumori, Takuya Hasegawa, Tadashi Ishigaki, Kazuyoshi Uematsu, Kenji Toda, Mineo Sato

研究成果: Article査読

3 被引用数 (Scopus)

抄録

Mg-doped LiSrPO4:Eu2+ (Li(Sr, Mg)PO4:Eu2+) phosphors, in which some Sr2+ ions were replaced by Mg2+ ions, were prepared using a conventional solid-state reaction method. The crystal structure of the phosphors was hexagonal, which is the high-temperature phase of LiSrPO4, even though synthesis was carried out at a relatively low temperature of 900 °C. Fluorescence could be efficiently excited in the 220–400 nm ultraviolet region, and bright blue emission was produced with a peak at 448 nm. The emission intensity was higher than that for LiSrPO4:Eu2+ without Mg doping, and a lower Eu content (1 mol%) was required in order to reach the maximum intensity. These results indicate that the blue-emitting Li(Sr, Mg)PO4:Eu2+ phosphor is a promising candidate for phosphor-conversion white Light Emitting Diodes.

本文言語English
ページ(範囲)359-362
ページ数4
ジャーナルMaterials Research Innovations
23
6
DOI
出版ステータスPublished - 2019 9月 19
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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