Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
권호 표지

Variation of Emission Colors through Cross-Relaxation In $Tb^{3+}$ Doped $YAlO_3$

$Tb^{3+}$ 첨가된 $YAlO_3$에서 Cross-Relaxation의한 발광 색변화

  • Kim, Gwang Chul (Physics Department, School of Liberal Arts, Korea University of Technology and Education)
  • 김광철 (한국기술교육대학교 교양학부 물리학전공)
  • Received : 2012.02.17
  • Accepted : 2012.03.15
  • Published : 2012.03.31
Download PDF
⟨ Previous Next ⟩

Abstract

$YAlO_3:Tb{_x}^{3+}$ has been synthesized by a combustion process and the concentration x of Tb was varied from 0.001 and 0.05 mol% per mole of $YAlO_3$. The emission optical properties on the $YAlO_3:Tb{_x}^{3+}$ have been investigated by time-resolved photoluminescence spectra and decay curves of center wavelength. The emission color changes from blue to green with increasing the $Tb^{3+}$ concentration from x= 0.001 to 0.05 mole fraction in $YAlO_3$ host. This emission color change can be explained in terms of cross-relaxation processes. Decay curves of emission intensity indicate that the type of energy transfer is donor-acceptor transition.

Keywords

References

  1. Shigeo Shionoya, "Phosphor Handbook," CRC Press, pp. 3-8, 1999.
  2. J. A. Mares, M. Nikl, N. Solovieva, C. D'Ambolosia, K Blazek, P. Maly, G. P. Pazzi, and P. Dorenbos, "Scintillation and Spectroscopic Properties of $Ce^{3+}$-doped $YAlO_3$ and $Lu_x(RE)_{1-x}AlO_3$($RE=Y^{3+}$ and $Gd^{3+}$) Scintillators," Nuclear Instruments and Methods in Physics Research, Vol. A 498, pp. 312-327, 2003.
  3. W. N. Kim, H. L. Park, and G. C. Kim, "Lithium solubility limit in $ZnGa_2O_4:Bi_{0.001}^{3+}$, $Li^+$ Phosphor" Materials Letters, Vol. 59, pp. 2433-2436, 2005. https://doi.org/10.1016/j.matlet.2004.12.059
  4. J. S. Kim, P. E. Jeon, T. H. Park, J. C. Choi, H. L. Park, and G. C. Kim, "White-Light Generating through Ultraviolet-Emitting Diode and White-Emitting Phosphor," Applied Physics Letters, Vol. 85, pp. 3696-3698, 2004. https://doi.org/10.1063/1.1808501
  5. H. J. Jeon, S. K. Kim, H. L. Park, G. C. Kim, J. H. Bang, and M. Lee, "Observation of Two Independent Energy Transfer Mechanisms in $BaAl_{12}O_{19}: Ce_{0.06}^{3+}+Eu_x^{2+}$ Phosphor," Solid State Communications, Vol. 120, pp. 221-225, 2001. https://doi.org/10.1016/S0038-1098(01)00323-4
  6. L. Jacak, P. Hawrylak, and A. Wojs, "Quantum Dots," Springer-Verlag, 1998.
  7. N. J. Hess, G. D. Maupin, L. A. Chick, D. S. Sunberg, D. E. McCreedy, and T. R. Armstrong, "Synthesis and Crystallization of Yttrium-Aluminium Garnet and Reated Compounds", J. of Materials Science, Vol. 29, pp1873-1878, 1994. https://doi.org/10.1007/BF00351307
  8. O. Yamaguchi, K. Matui, and K. Shimizu, "Formation of $YAlO_3$ with garnet structure," Ceramics International, Vol. 11(3), pp. 107-108, 1985. https://doi.org/10.1016/0272-8842(85)90006-9
  9. G. C. Kim, S. I. Mho, and H. L. Park, "Observation of energy transfer between $Ce^{3+}$ and $Eu^{3+}$ in $YAlO_3:Ce$, Eu," J. Materials Science Letters, Vol. 14, pp. 805-806, 1995. https://doi.org/10.1007/BF00278135
  10. G. C. Kim, T. W. Kim, S. I. Mho, and H. L. Park, "Green Emission Band Site of $Ce^{3+}$ in $YAlO_3:Ce^{3+}$ Phosphor," Bulletin of the Korean Chemical Society, Vol. 18(1), pp.120-121, 1997.
  11. Th. Forster, Ann. Physik, Vol. 2, pp55, 1948
  12. B. Henderson and G. F. Imbusch, "Optical Spectroscopy of Inorganic Solids", Clarendon press Oxford, pp447-473, 1989.
  13. G. Blasse and B. C. Grabmaier, "Luminescence Materials" Springer-Verlag, pp. 91-97, 1994.
  14. Shigeo Shionoya, "Phosphor Handbook," CRC Press, pp. 85-99, 1999.