A temperature dependent investigation of upconversion emission in Er3+:PLZT transparent ceramic
A temperature dependent investigation of upconversion emission in Er3+:PLZT transparent ceramic
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DOI：
10.1016/j.ceramint.2015.08.135
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发表时间：
2016
影响因子：
5.2
通讯作者：
Xiaoyan Li;Yun-long Yu;Zhi-qiang Zheng
中科院分区：
文献类型：
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作者：
Xiaoyan Li;Yun-long Yu;Zhi-qiang Zheng
研究了Er 3+：PLZT透明陶瓷在10 ~ 300 K温度范围内的上转换发光。在540、564和682 nm附近观察到对应于2 H 11/2、4S 3/2和4F 9/2到4 I 15/2跃迁的发射带。随着测量温度的升高，564和682 nm峰的强度降低，而540 nm峰的强度增加。基于速率方程理论，建立了Er 3+：PLZT陶瓷上转换发光的动力学模型。令人印象深刻的是，在整个温度范围内的计算与实验数据吻合得很好。此外，还从玻尔兹曼热分布和无辐射弛豫的角度讨论了Er 3+：PLZT陶瓷的温度依赖性上转换发光行为。
The upconversion emission of Er3+:PLZT transparent ceramic was investigated at different temperatures from 10 to 300 K. Emission bands around 540, 564 and 682 nm corresponding to transitions from2H11/2,4S3/2, and4F9/2to4I15/2were observed. As the measurement temperature was increased, the intensities of the 564 and 682 nm peaks decreased, while that of the 540 nm peak increased. Based on the rate equation theory, a model for the dynamics of upconversion emission in Er3+:PLZT ceramic was proposed. Impressively, the calculations agree well with the experimental data in the whole temperature range. Additionally, the temperature dependent upconversion emission behavior in Er3+:PLZT ceramic was discussed in terms of the Boltzmann thermal distribution and nonradiative relaxation.