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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

锶铝比例对铝酸锶长余辉发光材料性能的影响

栾 林， 郭崇峰， 黄德修   

  1. 华中科技大学 武汉光电国家实验室， 武汉 430074
  • 收稿日期:2008-04-21 修回日期:2008-06-02 出版日期:2009-01-20 网络出版日期:2009-01-20

Effect of Al/Sr Ratio on Properties of Strontium Aluminate Long Lasting Phosphor

LUAN Lin, GUO Chong-Feng, HUANG De-Xiu   

  1. Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2008-04-21 Revised:2008-06-02 Published:2009-01-20 Online:2009-01-20

PDF (PC)

2280

被引次数

69 | 3

摘要：

系统研究了Eu2+、Dy3+共激活的铝酸锶长余辉发光材料的发光特性与Al/Sr比例的关系.采用高温固相法合成了Al/Sr从1.0到12.0的一系列样品，对其进行了XRD和荧光光谱测试，当Al/Sr＝2.0、3.5、10.0时，分别得到了SrAl2O4:Eu2+,Dy3+、Sr4Al14O25:Eu2+,Dy3+、SrAl12O19:Eu2+,Dy3+的纯相，其它比例时得到的是不同铝酸锶化合物的混合物，样品的相组成呈明显的过渡性变化，导致样品的发光颜色随Al/Sr比例的增大，从蓝绿光向短波长方向移动，最终到达紫光.

关键词: 铝酸盐, 长余辉, 铝锶比

Abstract: The relation between properties of strontium aluminate phosphor and Al/Sr ratio was investigated. A series of strontium aluminate phosphors with different Al/Sr ratios from 1.0 to 12.0 were synthesized by solid-state method. The samples were characterized by X-ray diffraction and photoluminescence spectra. The results reveal that single phases of SrAl2O4:Eu2+,Dy3+, Sr4Al14O25:Eu2+,Dy3+ and SrAl12O19:Eu2+,Dy3+ are obtained with Al/Sr ratios of 2.0, 3.5 and 10.0 respectively. When Al/Sr selects other values, the final products are mixture. Moreover, the emission spectra of the samples shift to blue-ultraviolet short wavelength from yellow-green long wave with the increase of Al/Sr ratios, which result from change of products’ composition.

Key words: aluminate, long afterglow, Al/Sr

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