Control of NaAlSiO 4:Eu 2+ photoluminescence properties by charge-compensated aliovalent element substitutions

Jihae Kim, Hideki Kato, Masato Kakihana

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)

    Abstract

    We have conducted two kinds of the so-called charge-compensated aliovalent element substitutions to control the photoluminescence properties of NaAlSiO 4:Eu 2+ with a special focus on the enhancement of the excitation intensity at 400 nm. The aliovalent element substitutions include cation-cation and cation-anion co-substitutions according to the general formulas Na 1-xM xAl 1+xSi 1-xO 4:Eu 2+ and Na 1-xM xAlSiO 4-xN x:Eu 2+ (M=Mg 2+, Ca 2+, and Sr 2+), respectively. The increase in the relative excitation intensity at 400 nm has been achieved in both types of the co-substitutions. Thus, the present research has demonstrated the effectiveness of the charge-compensated element substitution.

    Original languageEnglish
    Pages (from-to)97-100
    Number of pages4
    JournalJournal of Information Display
    Volume13
    Issue number3
    DOIs
    Publication statusPublished - 2012 Sep

    Keywords

    • aliovalent element substitution
    • charge compensation
    • phosphor for white LED
    • sodium-aluminosilicate

    ASJC Scopus subject areas

    • Materials Science(all)
    • Electrical and Electronic Engineering

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