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2007 , Vol. 22 >Issue 2: 373 - 376

DOI: https://doi.org/10.3724/SP.J.1077.2007.00373

研究论文

真空紫外激发下Pr 3+掺杂的几种硼酸盐体系的低温光谱特性

  • 符义兵 ,
  • 张国斌 ,
  • 吴文清 ,
  • 戚泽明 ,
  • 石军岩 ,
  • 施朝淑
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  • 1. 中国科学技术大学国家同步辐射实验室, 合肥 230029; 2. 中国科学技术大学物理系, 合肥 230026

收稿日期: 2006-04-20

  修回日期: 2006-06-05

  网络出版日期: 2007-03-20

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Low Temperature Spectral Properties of Several Pr3+ Doped Borates under VUV Excitation

  • FU Yi-Bing ,
  • ZHANG Guo-Bin ,
  • WU Wen-Qing ,
  • QI Ze-Ming ,
  • SHI Jun-Yan ,
  • SHI Chao-Shu
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  • 1. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China; 2. Department of physics, University of Science and Technology of China, Hefei 230026, China

Received date: 2006-04-20

  Revised date: 2006-06-05

  Online published: 2007-03-20

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摘要

研究了SrB4:Pr 3+, LaB3O6:Pr 3+ 及LaMgB5O10:Pr 3+低温下的光谱. 从发射谱上看这三种发光材料都可以产生光子级联发射, 对照Pr 3+离子的能级图对各发射峰进行了指认. 因为硼酸盐体系中较高的声子振动能量导致了3 P0和1D2能级间的无辐射弛豫, 所以级联发射的第二步过程3 p 0→3HJ发光非常微弱或基本没有. 在LaB3O6 及LaMgB6O10 的激发谱上除了4f5d吸收带外还观测到了Pr3+离子的3H4→1S0跃迁, 由此在这两种材料中确定了Pr 3+离子的1S0能级相对于最低的4f5d能级的位置.

关键词： 三价镨离子; 光子级联发射; 真空紫外激发; 低温光谱

本文引用格式

符义兵 , 张国斌 , 吴文清 , 戚泽明 , 石军岩 , 施朝淑 . 真空紫外激发下Pr 3+掺杂的几种硼酸盐体系的低温光谱特性[J]. 无机材料学报, 2007 , 22(2) : 373 -376 . DOI: 10.3724/SP.J.1077.2007.00373

Abstract

Low temperature spectra of SrB4O7:Pr3+, LaB3O6:Pr3+ and LaMgB5O10:Pr3+
were investigated by synchrotron radiation VUV light. Under VUV excitation,
photon cascade emission was found in SrB4O7:Pr3+, LaB3O6:Pr3+ and LaMgB5O10:Pr3+. All peaks in emission spectra were assigned. Because high phonon energy in borates results in non-radiative relaxation between 3P0 and 1D2 states of Pr3+, the second step emission 3P0→3HJ is very low in SrB4O7:Pr3+ and even is absent in LaB3O6:Pr3+ and LaMgB5O10:Pr3+. In the excitation spectra of LaB3O6:Pr3+ and LaMgB5O10:Pr3+, along with the 4f5d absorption bands, a weak line due to 3H4→ 1S0 transition also was detected. From the position of 3H4→ 1S0 transition, the energy difference of 1S0 state and the lowest 4 f5d state was determined.

Key words： Pr3+ ion; photon cascade emission; VUV excitation; low temperature spectra

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