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Synthesis and luminescent properties of Er³+ doped CaZrO₃long persistent phosphors

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2008, 18(1), pp.27-32
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

박병석 1 Jong Geon Choi 1

1동신대학교

Accredited

ABSTRACT

Novel long persistent phosphors of CaZrO₃:Er³+ have been synthesized by traditional solid state reaction method.The long persistent phosphor crystaline particles were characterized by the X-ray difraction (XRD), photoluminescencespectrophotometer, thermoluminescence (TL) and luminance meter. The results reveal that the samples are composed ofsingle CaZrO₃ phase. The broadband emission spectra of 446 nm peak and 550 nm peak was revealed by synthesized athigh temperature in N2 gas. Gren long persistent phosphors have been observed in the system for over 6 h after UViradiation (254 nm). The main emission peak was ascribed to Er³+ ions transition from 5D5/2→4F9/2, 2H12/2, 4S3/2→4I13/2 and2G9/2→4I13/2, and the afterglow may be ascribed to the suitable trap centers in the CaZrO₃ host lattice.

Citation status

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