Synthesis process of BaMgAl10O17:Eu2+ from sol-gel-derived Eu2+-activated fluoride precursors without H 2 annealing treatments

Shinobu Fujihara, Yoko Kishiki, Toshio Kimura

研究成果: Article査読

8 被引用数 (Scopus)

抄録

Barium magnesium aluminate, BaMgAl10O17, was synthesized by a solid-state reaction between Al2O3 and sol-gel-derived BaMgF4 precursors. The reaction temperature necessary for producing a single-phase material was reduced to 1300°C because of the higher reactivity and lower melting point of the fluoride precursors. Eu-doped BaMgF4 was also prepared and characterized to examine its suitability as a precursor for synthesizing BaMgAl10O17:Eu 2+ blue phosphors. It was demonstrated that Eu3+, which was used in the acetate form as a starting material, was reduced to Eu 2+ in the sol-gel processing of BaMgF4, as indicated by a broad blue emission due to an allowed d-f transition at 420 nm with an ultraviolet excitation at 290 nm. BaMgAl10O17:Eu 2+, which showed efficient blue emissions at 450 nm with an ultraviolet excitation at 254 nm, was successfully prepared by heating a mixture of Al2O3 and Eu-doped BaMgF4 at 1300°C without any special reducing treatment.

本文言語English
ページ(範囲)H217-H220
ジャーナルJournal of the Electrochemical Society
151
10
DOI
出版ステータスPublished - 2004 11 26

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 再生可能エネルギー、持続可能性、環境
  • 表面、皮膜および薄膜
  • 電気化学
  • 材料化学

フィンガープリント

「Synthesis process of BaMgAl<sub>10</sub>O<sub>17</sub>:Eu<sup>2+</sup> from sol-gel-derived Eu<sup>2+</sup>-activated fluoride precursors without H <sub>2</sub> annealing treatments」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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