Effects of heat-treatment with a flux under reduced atmosphere on photoluminescence of orange-red emitting CaSrSiO4:Eu2+ phosphors

Tetsufumi Komukai, Jun Yokoyama, Yasushi Sato, Hideki Kato, Masato Kakihana

    研究成果: Article査読

    1 被引用数 (Scopus)

    抄録

    The effects of heat-treatments with various conditions such as temperature, atmosphere and luxing agents on photoluminescence properties of CaSiSiO4:Eu2+ phosphors were investigated in detail. X-ray absorption fine structure of CaSrSiO4:Eu2+ phosphors heat-treated at various temperatures revealed that the reduction from Eu3+ to Eu2+ in the precursor powder was effectively promoted at the temperatures higher than melting temperature of luxing agent. We found that red shift of emission peak was caused by pre-heat-treatment under a reduced atmosphere. The effect of fluxing agents such as BaCl2, SrCl2, CaCl2 on photoluminescence properties of CaSrSiO4:Eu2+ phosphor was also examined. The results indicate that CaSrSiO4:Eu2+ phosphor heat-treated using BaCl2 lux shows high emission eficiency. We also recognized that the small amounts of Ba2+ was incorporated into CaSrSiO4 lattice due to the ion exchange.

    本文言語English
    ページ(範囲)835-839
    ページ数5
    ジャーナルFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
    63
    9
    DOI
    出版ステータスPublished - 2016 8月

    ASJC Scopus subject areas

    • 機械工学
    • 産業および生産工学
    • 金属および合金
    • 材料化学

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