Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Synthesis and Photoluminescence of the Sr1-xBaxAl2O4:Eu2+, Dy3+ Long Phosphorescence Phosphor

Sr1-xBaxAl2O4:Eu2+, Dy3+계 축광성 형광체의 합성과 그의 발광특성

  • Park, Jin-Woo (Department of Materials Science and Engineering, The University of Seoul) ;
  • Kim, Jung-Sik (Department of Materials Science and Engineering, The University of Seoul)
  • 박진우 (서울시립대학교 신소재공학과) ;
  • 김정식 (서울시립대학교 신소재공학과)
  • Published : 2006.06.01
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Abstract

In this study, the $Sr_{1-x}Ba_{x}Al_{2}O_{4}:Eu^{2+},Dy^{3+}$ phosphor were prepared by the solid-state reaction method and its photoluminescence properties were investigated. Starting powders of $SrCO_3,\;BaCO_3,\;and\;Al_{2}O_3$ were mixed with $Eu_{2}O_3$ as activator, $Dy_{2}O_3$ as co-activator and $B_{2}O_3$ as flux. Then, the mixed powders were heated at the temperature of $1100{\sim}1400^{\circ}C$ for 3 h under the reducing ambient atmosphere of $95%Ar+5%H_2$. The effect of Ba addition from 0.0 to 1.0 mol on photoluminescence was investigated. As the amount of Ba increased, the intensity of emission increased and the optimum long phosphorescence occurred at the amount of 0.1 mol Ba. The optimum sintering condition for long phosphorescent phosphor of $Sr_{1-x}Ba_{x}Al_{2}O_{4}:Eu^{2+},Dy^{3+}$($x=0{\sim}1.0mol$) was found at $1400^{\circ}C$. The excitation spectra showed a broad band of $250{\sim}450nm$ with maximum peak at 360 nm. The maximum peak intensity of emission spectra occurred at the range of $480{\sim}520nm$, depending on Ba content.

Keywords

References

  1. P. Goldberg, 'Luminescence of Inorganic Solids,' p. 273, Academic Press, New York, 1966
  2. T. Katsumata, T. Nabae, K. Sasajima, S. Komuro, and T. Morikawa, 'Effects of Composition on the Long Phosphorescent $SrAl_2O_4:Eu^{2+},Dy^{3+}$Phosphor Crystal,' J. Electrochem. Soc., 144 L243-44 (1997) https://doi.org/10.1149/1.1837392
  3. Y. Lin, Z. Zhang, F. Zhang, Z. Tang, and Q. Chen, 'Preparation of the Ultrafine $SrAl_2O_4$:Eu,Dy Needle-Like Phosphor and Its Optical Properties,' Mat. Chem. Phys., 65 103-06 (2000) https://doi.org/10.1016/S0254-0584(00)00222-4
  4. H. Yamamoto and T. Matsuzawa, 'Mechanism of Long Phosphorescence of $SrAl_2O_4:Eu^{2+},Dy^{3+}$and $CaAl_2O_4:Eu^{2+},Nd^{3+},$' J. Luminescence, 72-74 287-89 (1997) https://doi.org/10.1016/S0022-2313(97)00012-4
  5. K. Kato, I. Tsutai, T. Kamimura, F. Kaneko, K. Shinbo, M. Ohta, and T. Kawakami, 'Thermoluminescence Properties of $SrAl_2O_4$:Eu Sputtered Films with Long Phosphorescence,' J. Luminescence, 82 213-20 (1999) https://doi.org/10.1016/S0022-2313(99)00036-8
  6. T. Matsumata, T. Nabae, K. Sasajima, and T. Matszawa, 'Growth and Characterization of Long Persistent $SrAl_2O_4$: and $CaAl_2O_4$-Based Phosphor Crystals by a Floating Zone Technique,' J. Crystal Growth, 183 361-65 (1998) https://doi.org/10.1016/S0022-0248(97)00308-4
  7. Y.-K. Lee, J.-Y. Kim, B.-K. Kim, and Y.-T. Yu, 'Synthesis and After-Grow Characteristics of Eu Activated Sr-Al-O Long Phosphorescent Phosphor,' Kor. J. Mater. Res., 8 [8] 737-43 (1998)
  8. A. Douy and M. Capron, 'Crystallisation of Spray-Dried Amorphous Precursors in the $SrO-Al_2O_3 $System: A DSC Study,' J. Eur. Ceram. Soc., 23 2075-81 (2003) https://doi.org/10.1016/S0955-2219(03)00015-3
  9. F. P. Glasser and L. S. D. Glasser, 'Crystal Chemistry of Some $AB_2O_4$ Compounds,' J. Am. Ceram. Soc., 46 [8] 377- 80 (1963) https://doi.org/10.1111/j.1151-2916.1963.tb11755.x
  10. H. W. Leverenz, 'An Introduction to Luminescence of Solid,' p. 77, Dover Pub., New York, 1968
  11. A. Nag and T. R. N. Kutty, 'Role of $B_2O_3$ on the Phase Stability and Long Phosphorescence of $SrAl_2O_4$:Eu,Dy,' J. Alloys and Comp., 354 221-31 (2003) https://doi.org/10.1016/S0925-8388(03)00009-4
  12. H. Takasaki, S. Tanabe, and T. Hanada, 'Long-Lasting Afterglow Characteristics of Eu, Dy, Co-Doped $SrO-Al_2O_3$ Phosphor,' J. Ceram. Soc. Jpn., 104 [4] 322-29 (1996) https://doi.org/10.2109/jcersj.104.322
  13. E. Luria and S. R. Rotman, 'Converting Eu^{2+}\;to\;Eu^{3+} in Europium-Doped LMA,' J. Luminescence, 60-61 67-9 (1994) https://doi.org/10.1016/0022-2313(94)90094-9
  14. X. Yu, C. Zhou, X. He, Z. Peng, and S. Yang, 'The Influence of Some Processing Conditions on Luminescence of $SrAl_2O_4:Eu^{2+} $Nanoparticles Produced by Combustion Method,' Mater. Lett., 58 1087-91 (2004) https://doi.org/10.1016/j.matlet.2003.08.022
  15. T. R. N. Kutty, R. Jagannathan, and R. P. Rao, 'Luminescence of $Eu^{2+}$+ in Strontium Aluminates Prepared by the Hydrothermal Method,' Mater. Res. Bull., 25 [11] 1355-62 (1990) https://doi.org/10.1016/0025-5408(90)90217-P
  16. D. Jia, 'Charging Curves and Excitation Spectrum of Long Persistent Phosphor $SrAl_2O_4:Eu^{2+},Dy^{3+}$, ' Optical Mater., 22 65-9 (2003) https://doi.org/10.1016/S0925-3467(02)00241-0
  17. T. Katsumata, S. Toyomane, A. Tonegawa, Y. Kanai, U. Kaneyama, K. Shakuno, R. Sakai, S. Komuro, and T. Morikawa, 'Characterization of Trap Levels in Long-Duration Phosphor Crystals,' J. Crystal Growth, 237-239 361-66 (2002) https://doi.org/10.1016/S0022-0248(01)01942-X