Near-infrared Raman spectroscopy as a unique tool for characterization of visible luminescent ZnS phosphor

Osada Minoru, Kakihana Masato, Adachi Ryuji, Ichihara Takashi, Kijima Naoto

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)

    Abstract

    Near-infrared (NIR) Raman spectroscopy has shown its unique advantages for characterization of ZnS:Cu, Al materials, emitting a strong luminescence in the visible region. We demonstrate that, because of a rapid decrease of luminescence in the NIR region, Raman spectra with 752.5-nm excitation are free from the visible luminescence, which usually masks Raman signals with visible excitations. By comparing the spectra of ZnS:Cu, Al samples with different luminescence efficiencies, we also find that crystal imperfections, including coexistence of hexagonal domains, can lead to a reduction of luminescence properties.

    Original languageEnglish
    Pages (from-to)225-227
    Number of pages3
    JournalJournal of the Ceramic Society of Japan
    Volume110
    Issue number1280
    DOIs
    Publication statusPublished - 2002 Apr

    Keywords

    • Luminescence property
    • Near-infrared Raman spectroscopy
    • Phase characterization
    • Visible luminescent phosphor
    • Zinc sulfide

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Chemistry(all)
    • Condensed Matter Physics
    • Materials Chemistry

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