A combinatorial approach to the discovery and optimization of YCa 4 O(BO 3 ) 3 -based luminescent materials

Hiroyuki Sano, Takahiro Matsumoto, Yuji Matsumoto, Hideomi Koinuma

Research output: Contribution to journalConference articlepeer-review

6 Citations (Scopus)


Thin films of YCa 4 O(BO 3 ) 3 (YCOB)-based new luminescent materials were explored by the combinatorial pulsed laser deposition (PLD) method which enabled us to fabricate continuous composition spread film libraries. Strong red and green luminescence were found in the Y 1-x Eu x COB (0 ≤ x ≤ 1), (YEuCOB) and Y 1-y Tb y COB (0 ≤ y ≤ 1) (YTbCOB) films, respectively. The film libraries were characterized by photoluminescence (PL), PL decay, an electron-probe microanalyzer and an electron diffraction analysis. The luminescent intensities in the amorphous film libraries strongly depended on the chemical composition of each rare-earth (RE) ion. The optimum concentration of rare-earth ions in YEuCOB and YTbCOB were experimentally determined to be Eu = 7.5% and Tb = 20-30%, respectively.

Original languageEnglish
Pages (from-to)2493-2496
Number of pages4
JournalApplied Surface Science
Issue number7
Publication statusPublished - 2006 Jan 21
Externally publishedYes
EventProceedings of the Third Japan-US Workshop on Combinatorial Material Science and Technology CMST-e SI -
Duration: 2004 Dec 72004 Dec 10


  • Combinatorial pulsed laser deposition method
  • Composition spread
  • Luminescence
  • YCa O(BO ) -based systems

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films


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