Abstract In this paper, the Sr3Y2 (BO3)4:Eu3+ phosphor was synthesized by high temperature solid-state reaction method and the luminescence characteristics were investigated. The emission spectrum exhibits one strong red emission at 613nm corresponding to the electric dipole 5D0--7F2 transition of Eu3+ under 365nm excitation, this is because Eu3+ substituted for Y3+ occupied the non-centrosymmetric position in the crystal structure of Sr3Y2 (BO3)4. The excitation spectrum indicates that the phosphor can be effectively excited by ultraviolet (254nm, 365nm and 400nm) and blue (470nm) light. The effect of Eu3+ concentration on the red emission of Sr3Y2 (BO3)4:Eu3+ was measured, the result shows that the emission intensities increase with increasing Eu3+ concentration, then decrease. The Commission Internationale del'Eclairage chromaticity (x, y) of Sr3Y2(BO3)4:Eu3+ phosphor is (0.640,0.355) at 15 mol% Eu3+.
Received: 25 July 2007
Revised: 04 November 2007
Accepted manuscript online:
Fund: Project supported by Hebei
Provincial Technology Development Foundation of China (Grant No
51215103b), and Science Foundation of Hebei University, China (Grant
No 2006Q06).
Cite this article:
Li Pan-Lai(李盼来), Yang Zhi-Ping(杨志平), Wang Zhi-Jun(王志军), and Guo Qing-Lin(郭庆林) Luminescence characteristics of Eu3+ activated borate phosphor for white light emitting diode 2008 Chin. Phys. B 17 1907
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