Development of two novel Eu2+-activated phosphors in the Na-Sc-Si-O system and their photoluminescence properties

Jihong Min, Taichi Yamaguchi, Hideki Kato, Makoto Kobayashi, Hisanori Yamane, Masato Kakihana

    Research output: Contribution to journalArticlepeer-review

    4 Citations (Scopus)

    Abstract

    Two novel Eu2+-activated phosphors in the Na-Sc-Si-O system were developed in this study, NaScSi2O6:Eu and Na 3ScSi3O9:Eu. NaScSi2O 6:Eu2+ showed yellow emission with a peak at 555 nm under excitation at 220-430 nm. When flux-treatment was performed for NaScSi 2O6:Eu2+, we found the existence of a new phase. We then succeeded in synthesis of a high-purity sample of this new compound by a parallel solution synthesis method. It was revealed that the new phase was Na3ScSi3O9 with isostructure to Na3YSi3O9, and Eu2+-activated Na3ScSi3O9 exhibited photoluminescence. Na 3ScSi3O9:Eu showed green emission with a peak at 530 nm and a corresponding broad excitation band up to 500 nm. However, photoluminescence of Eu2+ was negligible for Na3YSi 3O9:Eu because of the stabilization of Eu3+ at the Y3+ site.

    Original languageEnglish
    Pages (from-to)285-289
    Number of pages5
    JournalJournal of Luminescence
    Volume154
    DOIs
    Publication statusPublished - 2014 Oct

    Keywords

    • Parallel synthesis
    • Solution method

    ASJC Scopus subject areas

    • Biophysics
    • Biochemistry
    • Chemistry(all)
    • Atomic and Molecular Physics, and Optics
    • Condensed Matter Physics

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