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Effects of B2O3 composition for the photoluminescence and after-glow charcteristics of SrAl2O4:Eu+2, Dy+3 phosphors

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2004, 14(3), pp.123~128
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : May 12, 2004
  • Accepted : June 1, 2004

Young-Ki Lee 1,  Gi-Seog Eom 1

1위덕대학교

Accredited

ABSTRACT

Both photoluminescence and the long-phosphorescent properties for SrAl2O4 : Eu+2,Dy+3 phosphor powder synthesized by the solid phase reaction were investigated as a function of B2O3 composition (0~10 wt%). The highest emission wavelength (520 nm) of photoluminescence spectra was not affected by B2O3 concentration. The highest emission intensity was obtained by the concentration of 3 wt% B2O3. After the removal of the Xenon lamp excitation (360 nm), also, the excellent long-phosphorescent property of the phosphors was obtained by the concentration of 3 wt% B2O3, although the decay times for all phosphors decreased exponentially.

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