中国物理B ›› 2010, Vol. 19 ›› Issue (12): 127808-127808.doi: 10.1088/1674-1056/19/12/127808

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A red oxide phosphor, Sr2ScAlO5:Eu2+ with perovskite-type structure, for white light-emitting diodes

周天亮, 宋振, 宋西平, 边柳, 刘泉林   

  1. School of Materials Science & Engineering and State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
  • 收稿日期:2010-07-20 修回日期:2010-08-07 出版日期:2010-12-15 发布日期:2010-12-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 90922027), and the National High Technology Research and Development Program of China (Grant No. 2009AA03Z432).

A red oxide phosphor, Sr2ScAlO5:Eu2+ with perovskite-type structure, for white light-emitting diodes

Zhou Tian-Liang(周天亮), Song Zhen(宋振), Song Xi-Ping(宋西平), Bian Liu(边柳), and Liu Quan-Lin(刘泉林)   

  1. School of Materials Science & Engineering and State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
  • Received:2010-07-20 Revised:2010-08-07 Online:2010-12-15 Published:2010-12-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 90922027), and the National High Technology Research and Development Program of China (Grant No. 2009AA03Z432).

摘要: Sr2ScAlO5:Eu2+, a red oxide phosphor with a perovskite-type structure, has been synthesized through a solid-state reaction and its luminescence properties have been investigated. An absorption band centering at 450 nm is observed from the diffuse reflection spectra and the excitation spectra, indicating that the phosphor can match perfectly with the blue light of InGaN light-emitting diodes. A broad red emission band at 620 nm is found from the emission spectra, originating from the 4f65d–4f7 transition of the Eu2+ ions. The best doping content of Eu in this material is about 5%. Sr2ScAlO5:Eu2+ is a highly promising red phosphor for use in white light-emitting diodes.

Abstract: Sr2ScAlO5:Eu2+, a red oxide phosphor with a perovskite-type structure, has been synthesized through a solid-state reaction and its luminescence properties have been investigated. An absorption band centering at 450 nm is observed from the diffuse reflection spectra and the excitation spectra, indicating that the phosphor can match perfectly with the blue light of InGaN light-emitting diodes. A broad red emission band at 620 nm is found from the emission spectra, originating from the 4f65d–4f7 transition of the Eu2+ ions. The best doping content of Eu in this material is about 5%. Sr2ScAlO5:Eu2+ is a highly promising red phosphor for use in white light-emitting diodes.

Key words: luminescence, red phosphor, Sr2ScAlO5:Eu2+, perovskite

中图分类号:  (Impurities in crystals)

  • 61.72.S-
78.55.Hx (Other solid inorganic materials) 85.60.Jb (Light-emitting devices)