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

doi:10.3724/SP.J.1077.2007.00373

无机材料学报

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¹, 张国斌¹, 吴文清¹, 戚泽明¹, 石军岩¹, 施朝淑^1,2

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 出版日期:2007-03-20 网络出版日期:2007-03-20

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

FU Yi-Bing¹, ZHANG Guo-Bin¹, WU Wen-Qing¹, QI Ze-Ming¹, SHI Jun-Yan¹, SHI Chao-Shu^1,2

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:2006-04-20 Revised:2006-06-05 Published:2007-03-20 Online:2007-03-20

摘要/Abstract

摘要： 研究了SrB₄:Pr ³⁺, LaB₃O₆:Pr³⁺ 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Pr³⁺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³P₀和¹D₂能级间的无辐射弛豫, 所以级联发射的第二步过程³p ₀→³H_J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

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 ¹D₂states of Pr³⁺, the second step emission ³P₀→3H_Jis 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→ ¹S₀transition, the energy difference of ¹S₀state and the lowest 4 f5d state was determined.

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

中图分类号:

O433
O482

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, DOI: 10.3724/SP.J.1077.2007.00373.

FU Yi-Bing,ZHANG Guo-Bin,WU Wen-Qing,QI Ze-Ming,SHI Jun-Yan,SHI Chao-Shu. Low Temperature Spectral Properties of Several Pr³⁺ Doped Borates under VUV Excitation[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2007.00373.

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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

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

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