Luminescence Property of Eu2+ Doped Strontium Silicate Yellow Phosphor for White Light Emitting Diode


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Eu2+ activated strontium silicate (Sr3SiO5:Eu2+) yellow phosphor was prepared by the conventional solid-state reaction technique in reduction atmosphere with starting materials SrCO3, SiO2 and Eu2O3. The phase, morphology and luminescence property of the samples were analyzed. The X-ray diffraction analysis showed the main phase in all samples is tetragonal Sr3SiO5. With Eu2+ ions doped into the host lattice, the Sr3SiO5:Eu2+ phosphors absorb light energy in the UV-visible spectrum region and show an intense broad emission band in the yellow colour range (around 570 nm) and a weak band in the blue region (around 470 nm). The excitation and the emission bands are originated from the 4f−5d transition of Eu2+ ions. When the concentration of Eu2+ ions increases, the emission peaks of phosphors shift to longer wavelengths. The effective emission in the yellow colour indicates that phosphor as potential candidates for white light-emitting-diodes.



Key Engineering Materials (Volumes 368-372)

Edited by:

Wei Pan and Jianghong Gong




H. He et al., "Luminescence Property of Eu2+ Doped Strontium Silicate Yellow Phosphor for White Light Emitting Diode", Key Engineering Materials, Vols. 368-372, pp. 363-365, 2008

Online since:

February 2008




[1] S. Nakamura, G. Fasol: The blue laser diode: GaN based light emitters and lasers. (Springer- Verlag, Berlin, Germany, 1997).

[2] L.S. Rohwer, A.M. Srivastava: Electrochem. Soc. Interface Vol. 12 (2003), p.36.

[3] N. Lakshminarasimhan, U. V. Varadaraju: J. Electrochem. Soc. Vol. 152 (2005), p. H152.

[4] J.K. Park, K.J. Choi, S.H. Park: J. Electrochem. Soc. Vol. 152 (2005), p H121.

[5] S.H.M. Poort, G. Blasse: J. Lumin. Vol. 72 (1997), p.247.

[6] G. Blasse, B.C. Grabmaier: Luminescent Materials. (Springer-Verlag, Berlin, 1994).

[7] S.H.M. Poort, W. Janssen, G. Blasse: J. Alloys Compd. Vol. 260(1997), p.93.

[8] J.S. Kim, Y.H. Park, S.M. Kim, et al.: Solid State Commun. Vol. 133 (2005), p.445.

[9] J.S. Kim, P.E. Jeon, J.C. Choi, H.L. Park: Appl. Phys. Lett. Vol. 84 (2004), p.2931.

[10] J.S. Kim, K.T. Lim, Y.S. Jeong, et al.: Solid State Commun. Vol. 135 (2005), p.21.

[11] J.K. Park, M.A. Lim, C.H. Kim, et al.: Appl. Phys. Lett. Vol. 82 (2003), p.683.

[12] J.K. Park, M.A. Lim, K.J. Choi, C.H. Kim: J. Mater. Sci. Vol. 40 (2005), p. (2069).

[13] J. Qiu, K. Miura, N. Sugimoto, K. Hirao: J. Non-Cryst. Solid. Vol. 13 (1997).

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