Synthesis and luminescent properties of novel Ca3Y3Ge2BO13:Ln3+ (Ln3+ = Tb3+ and Eu3+) phosphors

Takuya Hasegawa, Natsuki Sato, Sun Woog Kim, Tadashi Ishigaki, Kazuyoshi Uematsu, Kenji Toda, Mineo Sato

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Novel Ln3+-doped (Ln3+ = Tb3+ and Eu3+) and Eu3+, Bi3+ co-doped Ca3Y3Ge2BO13 phosphors were synthesized by a conventional solid-state reaction method. Tb3+- and Eu3+-doped phosphors showed strong narrow green and red emission due to 4f intra-shell transitions of the Tb3+ or Eu3+ ions under the excitation at 254 nm. Bi3+ co-doped Ca3Y3Ge2BO13:Eu3+ phosphor has a new broad strong excitation band appeared at around 302 nm due to 1S03P1 transition of Bi3+, and presents red emission owing to 4f-4f transition of Eu3+ under excitation at 302 nm.

Original languageEnglish
Pages (from-to)507-511
Number of pages5
JournalJournal of the Ceramic Society of Japan
Volume123
Issue number1438
DOIs
Publication statusPublished - 2015 Jun 1

Keywords

  • Cubic structure
  • Energy transfer
  • Rare earth doped germanate phosphor

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