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A study on the luminescence characterization of red long persistent phosphors by the B₂O₃ addition

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초록

Red long persistent phosphors of CaZrO₃: Pr was synthesized by a solid reaction method. CaCO₃ and ZrO₂wereused as hosting materials and Pr was doped as luminescence center element, and B₂O₃was used as flux. The XRD patternand 590~700 nm. Phosphor samples were synthesized with B₂O₃flux concentration of 1, 5, 10 %, and luminescent peak ofmaximum intensity at 494 nm was obtained for 1 % B₂O₃. Luminescent peak of red color at 620 nm was of highestintensity for 10 % B₂O₃.

Abstract

Red long persistent phosphors of CaZrO₃: Pr was synthesized by a solid reaction method. CaCO₃ and ZrO₂wereused as hosting materials and Pr was doped as luminescence center element, and B₂O₃was used as flux. The XRD patternand 590~700 nm. Phosphor samples were synthesized with B₂O₃flux concentration of 1, 5, 10 %, and luminescent peak ofmaximum intensity at 494 nm was obtained for 1 % B₂O₃. Luminescent peak of red color at 620 nm was of highestintensity for 10 % B₂O₃.

참고문헌 (9)

  1. Z. Liu, "Long afterglow in Pr 3+ and Li + co-doped CaZrO3", Science Optics Communications, 251, pp.388~ (2005)
  2. W. Hoogenstraaten, , J. Philips Res. Rep, 13, pp.515~ (1958)
  3. J.G. Park, "Flux effect of alkali borates on SrAl2O4 phosphor ceramics", pp.8~9, Kanggung National University
  4. Y.Y. Choi, "Synthesis and characterization of long phosphorescent oxide phosphors activated with rare earth elements", pp.7~ (2004), Department of Chemical Engineering Graduate School Chonbuk National University
  5. R.A. Davies, "Cation dopant sites in the CaZrO3 proton conductor: a combined EXAFS and computer simulation study", Solid State Ionics, 130, pp.115~ (2000)
  6. Z. Liu, "Long afterglow in Pr 3+ and Li + co-doped CaZrO3", Science Optics Communications, 251, pp.390~ (2005)
  7. A.P. Vink, "Photon cascade emission in SrAlF5 : Pr 3+", J. Phys. Condens. Matter, 14, pp.8889~ (2002)
  8. P.A. Rodnyi, "Emission of Pr 3+ in SrAl12O19 under vacuum ultraviolet synchrotron excitation", J. Phys Condens. Matter, 15, pp.719~ (2003)
  9. Y.Y. Choi, "Synthesis and characterization of long phosphorescent oxide phosphors activated with rare earth elements", pp.161~ (2004), Department of Chemical Engineering Graduate School Chonbuk National University

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