Mn-doped LiNaGe₄O₉ as a rare-earth free phosphor: impact of Na-substitution on emission in tetragermanate phase

• SUZUKI Rie

  Department of Applied Physics, Tohoku University

• KUNITOMO Jun

  Department of Applied Physics, Tohoku University

• TAKAHASHI Yoshihiro

  Department of Applied Physics, Tohoku University

• NAKAMURA Kensaku

  Department of Applied Physics, Tohoku University

• OSADA Minoru

  International Center for Materials Nanoarchitectonics, National Institute for Materials Science

• TERAKADO Nobuaki

  Department of Applied Physics, Tohoku University

• FUJIWARA Takumi

  Department of Applied Physics, Tohoku University

抄録

We have synthesized Mn⁴⁺-doped mixed tetragermanate phases in the Li₂Ge₄O₉–LiNaGe₄O₉ system, i.e., Li(Li,Na)Ge₄O₉, by a glass-ceramic technique using stoichiometric precursor glasses, and have examined the effect of substitution of Na on their photoluminescence properties. The tetragermanate phases indicated clear red emission based on a ²E→⁴A₂ transition, and the entire substitution resulting in an LiNaGe₄O₉ phase provided an improvement of quenching temperature for the emission. Furthermore, the LiNaGe₄O₉ phase synthesized by solid-state reaction showed a high internal quantum yield and red color purity, demonstrating it to be a possible candidate as a rare-earth-free red phosphor.

収録刊行物

• Journal of the Ceramic Society of Japan

  Journal of the Ceramic Society of Japan 123 (1441), 888-891, 2015

  公益社団法人 日本セラミックス協会

キーワード

• Phosphor
• Red emission
• Manganese ion
• Germanate
• Rare-earth free

詳細情報

• CRID: 1390001205286745344
• NII論文ID: 130005096346
• DOI: 10.2109/jcersj2.123.888
• ISSN: 13486535
• ISSN: 18820743
• Web Site: https://www.jstage.jst.go.jp/article/jcersj2/123/1441/123_JCSJ-P15076/_pdf
• 本文言語コード: ja
• データソース種別:
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  • Crossref
  • CiNii Articles
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