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ZrO2中Eu3+的发光特性
引用本文:刘晃清,秦伟平,张继森.ZrO2中Eu3+的发光特性[J].光谱学与光谱分析,2005,25(1):19-22.
作者姓名:刘晃清  秦伟平  张继森
作者单位:中国科学院激发态开放实验室,中国科学院长春光学精密机械与物理研究所,吉林,长春,130022
基金项目:国家重点基础研究发展规划("973"稀土), 国家自然科学基金(10274082)资助项目
摘    要:研究了掺1mol%Eu^3 的ZrO2纳米材料随退火温度变化的发光性质,得到退火温度为600和800℃的样品中Eu^3 的^5D0→^7F2发射在604nm处,我们认为:^7F2能级受到较强的晶场影响而发生能级劈裂,劈裂成4个子能级,出现两种发射,在章中为604和612nm.的两种发射,这两种发射所占的分支比不同,前一种发射所占的分支比较大,而后一种发射所占的分支比较小,因而,604nm的发射占优势。研究了ZnO2纳米材料中掺杂浓度变化时Eu^3 的发光性质,得到掺杂浓度为3mol%的样品的发射与众不同,它只有597nm处的1个宽带发射。

关 键 词:Eu^3+  分支比  能级  晶场  发光性质  发射  ZrO2  掺杂浓度  发光特性  宽带
文章编号:1000-0593(2005)01-0019-04
修稿时间:2003年2月6日

Luminescence of Eu3+ Ions in Nanocrystalline Zirconia
LIU Huang-qing,QIN Wei-ping,ZHANG Ji-sen.Luminescence of Eu3+ Ions in Nanocrystalline Zirconia[J].Spectroscopy and Spectral Analysis,2005,25(1):19-22.
Authors:LIU Huang-qing  QIN Wei-ping  ZHANG Ji-sen
Institution:Key Laboratory of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130021, China.
Abstract:Zirconia doped with 1 mol% Eu3+ and annealed at 600, 800 and 1 000 degrees C and zirconia doped with 1 mol%, 3 mol%, 5 mol% Eu3+ and annealed at 800 degrees C were prepared by co-precipitation method; luminescence of Eu3+ ions was investigated under 394 nm excitation, and the emission of 5D0 -->7F2 was peaked at 604 nm in zirconia annealed at 600 and 800 degrees C, however, peaked at 610 nm in the sample annealed at 1 000 degrees C. By studying omega2 of 5 D0 --> 7F2, the authors found that omega2 increased with increasing annealing temperature. When monitored with 604 nm, the authors found that the contribution of population of 5L6 level to the luminescence of 5D0 --> 7F2 increased with increasing annealing temperature. By investigating the luminescence in the samples doped with 1 mol%, 3 mol% and 5 mol% Eu3+ ions, we found that the emission of 5D0 --> 7F1 transition for the sample doped with 3 mol% Eu3+ ions was a broad band peaked at 597 nm.
Keywords:Zirconia  Nanocrystal  Eu~(3+) ions  Luminescence
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