基于能量传递的Er^(3+)浓度猝灭效应分析  

Analysis of Er^(3+) Concentration Quenching Effect based on EN_(Er) gy Transfer

作　　者：刘永皓[1] 佟欣[2] 

机构地区：[1]大庆师范学院物理与电气信息工程学院,黑龙江大庆163712 [2]大庆师范学院数学科学学院,黑龙江大庆163712

出　　处：《大庆师范学院学报》2011年第3期88-91,共4页Journal of Daqing Normal University

基　　金：大庆师范学院博士科研启动项目(08ZB02);大庆师范学院青年基金项目(09ZQ04)

摘　　要：通过分析Er3+离子4I13/2能级的荧光衰减几率,建立了Er3+基于OH-基团作为猝灭中心的浓度猝灭模型。根据Auzel的理论模型分析了浓度猝灭机制,拟合结果表明体系中的浓度猝灭过程先后经历了受限扩散弛豫和快速扩散弛豫两种猝灭过程。A series of Er3＋-codoped bismuth borate glasses with different Er3＋ ions concentration have been obtained.The fluorescence decay curves of the relative multiplets of the glasses at room temperature have been recorded.The analysis of the total decay rate of the 4I13/2 state of Er3＋ has been used to determine the dominant cause of quenching.A simulation which explains the concentration-dependent lifetime reduction was presented on the basis of the Auzel＇ theory,the results indicate the fluorescence-concentration quenching process can be well explained by diffusion limited case for lower Er3＋ concentration and then towards fast diffusion for higher Er3＋ concentration.

关 键 词：浓度猝灭 跃迁几率 能量传递 

分 类 号：O482.31[理学—固体物理]