中国物理B ›› 2008, Vol. 17 ›› Issue (5): 1907-1910.doi: 10.1088/1674-1056/17/5/060

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Luminescence characteristics of Eu3+ activated borate phosphor for white light emitting diode

李盼来, 杨志平, 王志军, 郭庆林   

  1. College of Physics Science & Technology, Hebei University, Baoding 071002, China
  • 收稿日期:2007-07-25 修回日期:2007-11-04 出版日期:2008-05-20 发布日期:2008-05-20
  • 基金资助:
    Project supported by Hebei Provincial Technology Development Foundation of China (Grant No 51215103b), and Science Foundation of Hebei University, China (Grant No 2006Q06).

Luminescence characteristics of Eu3+ activated borate phosphor for white light emitting diode

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)   

  1. College of Physics Science & Technology, Hebei University, Baoding 071002, China
  • Received:2007-07-25 Revised:2007-11-04 Online:2008-05-20 Published:2008-05-20
  • Supported by:
    Project supported by Hebei Provincial Technology Development Foundation of China (Grant No 51215103b), and Science Foundation of Hebei University, China (Grant No 2006Q06).

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摘要： 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+.

关键词: white light emitting diode, Sr3Y2(BO3)4:Eu3+, luminescence characteristics

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+.

Key words: white light emitting diode, Sr3Y2(BO3)4:Eu3+, luminescence characteristics

中图分类号:  (Other solid inorganic materials)

  • 78.55.Hx
61.66.Fn (Inorganic compounds) 81.20.-n (Methods of materials synthesis and materials processing) 85.60.Jb (Light-emitting devices)