Investigation of energy transfer and frequency upconversion in Er3+/Ho3+ co-doped tellurite glasses
Investigation of energy transfer and frequency upconversion in Er3+/Ho3+ co-doped tellurite glasses
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DOI：
10.1016/j.jallcom.2006.10.097
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发表时间：
2008-02
影响因子：
6.2
通讯作者：
Xudong Zhang;T. Xu;S. Dai;Q. Nie;X. Shen;Longjun Lu;Xianghua Zhang
中科院分区：
文献类型：
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作者：
Xudong Zhang;T. Xu;S. Dai;Q. Nie;X. Shen;Longjun Lu;Xianghua Zhang
研究了0.5Er ~（3+）/xHo ~（3+）共掺碲酸盐玻璃在980 nm激发下的能量传递机制和频率上转换发光。在525、548和660 nm处观察到三个强的上转换发光，分别对应于Er 3+：2 H 11/2→ 4 I 15/2、Er 3+：4S 3/2→ 4 I 15/2+ Ho 3+：5S 2（5 F 4）→ 5I 8和Er 3+：4F 9/2→ 4 I 15/2+ Ho 3+：5 F 5 → 5I 8跃迁。当Ho 2 O3掺杂量为0.5mol%时，上转换发光达到最大值，其绿色和红色发光强度分别是未掺杂Ho 2 O3的4.5倍和6倍。对Er ~（3+）和Ho ~（3+）之间的上转换机制和能量传递进行了估算和评价。所有这三种发射都是基于双光子吸收过程。
The energy-transfer mechanisms and frequency upconversion emissions in 0.5Er3+/xHo3+co-doped tellurite glasses by exciting at 980nm have been investigated. Three intense upconversion luminescence emissions are observed at around 525, 548, and 660nm, which correspond to Er3+:2H11/2→4I15/2, Er3+:4S3/2→4I15/2+Ho3+:5S2(5F4)→5I8, and Er3+:4F9/2→4I15/2+Ho3+:5F5→5I8transitions, respectively. The upconversion emissions reach the maximum values when Ho2O3is 0.5mol%, and the intensities of the green and red light emissions were about 4.5 and 6 times stronger than those un-doped Ho2O3, respectively. The possible upconversion mechanisms and energy transfer between Er3+and Ho3+were also estimated and evaluated. All the three emissions are based on two photon absorption processes.