Emission color tuning of laminated and mixed SiAlON phosphor films by electrophoretic deposition

  • KITABATAKE Takuya
    Nano Ceramics Center, National Institute for Materials Science Department of Energy Science and Nuclear Engineering, Tokyo City University
  • UCHIKOSHI Tetsuo
    Nano Ceramics Center, National Institute for Materials Science
  • MUNAKATA Fumio
    Department of Energy Science and Nuclear Engineering, Tokyo City University
  • SAKKA Yoshio
    Nano Ceramics Center, National Institute for Materials Science
  • HIROSAKI Naoto
    Nano Ceramics Center, National Institute for Materials Science

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説明

The laminated or mixed films of SiAlON phosphors were prepared on ITO glasses by electrophoretic deposition (EPD). Three types of SiAlON phosphors, Eu doped Ca-α-SiAlON, β-SiAlON and CaAlSiN3, which emit the lights of yellow (λ = 585 nm), green (540 nm) and red (620 nm), respectively, were used for the color tuning. The photoluminescence (PL) properties of the laminated or mixed films were characterized by blue-light (λ = 450 nm) irradiation through the ITO glass substrates. The effects of the lamination or mixture of the phosphors are characterized by the broadness of the PL spectra.

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