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

Kim, Gwang Chul (Physics Department, School of Liberal Arts, Korea University of Technology and Education)
Publication Information
Journal of the Semiconductor & Display Technology / v.11, no.1, 2012 , pp. 35-39 More about this Journal
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
Cross-relaxation; Emission Color; Decay Curves; Donor-acceptor Transition;
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1 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.   DOI
2 L. Jacak, P. Hawrylak, and A. Wojs, "Quantum Dots," Springer-Verlag, 1998.
3 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.   DOI
4 O. Yamaguchi, K. Matui, and K. Shimizu, "Formation of $YAlO_3$ with garnet structure," Ceramics International, Vol. 11(3), pp. 107-108, 1985.   DOI
5 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.   DOI
6 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.
7 Th. Forster, Ann. Physik, Vol. 2, pp55, 1948
8 B. Henderson and G. F. Imbusch, "Optical Spectroscopy of Inorganic Solids", Clarendon press Oxford, pp447-473, 1989.
9 G. Blasse and B. C. Grabmaier, "Luminescence Materials" Springer-Verlag, pp. 91-97, 1994.
10 Shigeo Shionoya, "Phosphor Handbook," CRC Press, pp. 85-99, 1999.
11 Shigeo Shionoya, "Phosphor Handbook," CRC Press, pp. 3-8, 1999.
12 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.
13 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.   DOI
14 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.   DOI