Synthesis, Crystal Structure, and Photoluminescence of the Boron-Aluminum-Silicon Nitride Phosphor Sr3BAl5Si9N20:Eu

Fumitaka Yoshimura, Hisanori Yamane

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    4 Citations (Scopus)

    Abstract

    Single crystals of new boron-aluminum-silicon nitrides, Sr3BAl5Si9N20 and Sr2.91Eu0.09BAl5Si9N20, were synthesized by heating binary nitride mixtures at 2030 °C under a N2 pressure of 0.85 MPa. The X-ray diffraction spots from single crystals of these two compounds were indexed with the trigonal cell parameters a = 22.7406(8) Å, c = 5.7066(2) Å and a = 22.7439(8) Å, c = 5.7050(2) Å, respectively, and the crystal structures were determined to have the space group P3c1, with B atoms situated at planar 3-fold-coordinated N sites. A three-dimensional framework structure is constructed for these materials based on the sharing of N atoms of Al/Si-N4 tetrahedra and B-N3 triangles. In this framework, Sr/Eu atoms are located at three sites, surrounded by 10 N atoms. Single crystals of Sr2.91Eu0.09BAl5Si9N20 emitted yellow light with a peak wavelength of 565 nm and a full width at half-maximum of 106 nm under 450 nm light irradiation. The emission intensity of these crystals at 200 °C was found to be 12% of the intensity at 25 °C.

    Original languageEnglish
    Pages (from-to)5677-5683
    Number of pages7
    JournalInorganic chemistry
    Volume57
    Issue number9
    DOIs
    Publication statusPublished - 2018 May 7

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Inorganic Chemistry

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