Synthesis of Y2O3:Eu phosphor with various particles morphologies by solvothermal reaction in methanol-water system

• NAKASHIMA Kouichi

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

• SAITO Midori

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

• PETRYKIN Valery

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

• YIN Shu

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

• SATO Tsugio

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

• KAKIHANA Masato

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

抄録

A methanol–water mixed solvent was used as a reaction medium for the synthesis of Eu³⁺-doped Y₂O₃ (Y₂O₃:Eu) phosphor. Y₂O₃:Eu was prepared under solvothermal conditions at 150–300°C for 3–24 h using a solution of water and methanol as the reaction medium followed by heat treatment at 1000°C for 2 h. The phase composition and optical properties of the products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence spectroscopy. The powders obtained were composed of plate-like particles, spindle-like particles, and whisker particles and were different for samples prepared under supercritical, subcritical, and normal conditions of methanol. With the reaction temperature increasing, the particle size became smaller, in particular, the particles were ∼500 nm in size at 300°C under supercritical condition of methanol. After calcination at 1000°C for 2 h, the obtained powders retained the initial shape. The emission peaks of the fluorescence were assigned to the f–f transitions of the Eu³⁺ and exhibited red emission. The fluorescence intensities and internal quantum efficiency exhibited various values dependence on the morphology of the obtained particles.

収録刊行物

• Journal of the Ceramic Society of Japan

  Journal of the Ceramic Society of Japan 119 (1390), 445-450, 2011

  公益社団法人 日本セラミックス協会

キーワード

• Y₂O₃:Eu
• Phosphor
• Photoluminescence
• Solvothermal method
• Methanol
• Water

詳細情報

• CRID: 1390282680264334848
• NII論文ID: 130000784608
• NII書誌ID: AA12229489
• DOI: 10.2109/jcersj2.119.445
• ISSN: 13486535
• ISSN: 18820743
• NDL書誌ID: 11096890
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I11096890
• Web Site: http://www.jstage.jst.go.jp/article/jcersj2/119/1390/119_1390_445/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可