Synthesis of high intensity green emitting (Ba,Sr)SiO4:Eu2+ phosphors through cellulose assisted liquid phase precursor process

Usama Bin Humayoun, Young Hyun Song, Minji Lee, Kakihana Masato, Hiroshi Abe, Kenji Toda, Yasushi Sato, Takaki Masaki, Dae Ho Yoon

    研究成果: Article査読

    5 被引用数 (Scopus)

    抄録

    Green emitting phosphor (Ba1-x,Sr1-x)SiO4:2xEu2+, x = 0.03, 0.05, 0.1, and 0.15 were synthesized through a Liquid Phase Precursor Process (LPP). Liquid phase precursor method is reported to result in phosphors with markedly increased emission intensities compared to other synthesis methods. Here microcrystalline cellulose (MCC) and hydroxypropyl cellulose (HPC) templates were studied to achieve high efficiency green phosphors. The phase formation was investigated by XRD analysis which showed the conformation of the Ba2SiO4 (JCPDS card number 761631) phase. The obtained samples exhibited broad excitation spectra with maximum at 430 nm and a green emission centered around 520 nm. An optimized dopant concentration was selected and the effect of two different types of cellulose, i.e. MCC and HPC templates on the emission properties was considered. It was found that the samples synthesized using HPC and fired at 1050 °C under a reducing atmosphere, showed a high intensity of almost 2 times that of the MCC sample. Further experiments were conducted by varying viscosity, particle weight, and molecular weight of the HPC template. It was found that the green emission from the (Ba,Sr)SiO4:Eu2+ increased with the increase in viscosity and molecular weight of the template.

    本文言語English
    ページ(範囲)110-114
    ページ数5
    ジャーナルOptical Materials
    51
    DOI
    出版ステータスPublished - 2016 1 1

    ASJC Scopus subject areas

    • 電子材料、光学材料、および磁性材料
    • コンピュータ サイエンス(全般)
    • 原子分子物理学および光学
    • 分光学
    • 物理化学および理論化学
    • 有機化学
    • 無機化学
    • 電子工学および電気工学

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