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1. 中国科学院 长春光学精密机械与物理研究所 激发态物理重点实验室
2. 长春理工大学理学院 原子与分子物理系
收稿:2010-06-15,
修回:2010-8-20,
网络首发:2010-11-22,
纸质出版:2010-11-22
移动端阅览
刘春旭, 王阳, 张继森, 王鹏程, 骆永石, 王立军. NaYF<sub>4</sub>微晶中Tm<sup>3+</sup>-Er<sup>3+</sup>耦合对间的能量传递[J]. 发光学报, 2010,31(6): 812-815
LIU Chun-xu, WANG Yang, ZHANG Ji-sen, WANG Peng-cheng, LUO Yong-shi, WANG Li-jun. Energy Transfer of Tm<sup>3+</sup>-Er<sup>3+</sup> Couples in NaYF<sub>4</sub> Microcrystals[J]. Chinese Journal of Luminescence, 2010,31(6): 812-815
刘春旭, 王阳, 张继森, 王鹏程, 骆永石, 王立军. NaYF<sub>4</sub>微晶中Tm<sup>3+</sup>-Er<sup>3+</sup>耦合对间的能量传递[J]. 发光学报, 2010,31(6): 812-815 DOI:
LIU Chun-xu, WANG Yang, ZHANG Ji-sen, WANG Peng-cheng, LUO Yong-shi, WANG Li-jun. Energy Transfer of Tm<sup>3+</sup>-Er<sup>3+</sup> Couples in NaYF<sub>4</sub> Microcrystals[J]. Chinese Journal of Luminescence, 2010,31(6): 812-815 DOI:
在NaYF
4
微晶中借助于Tm
3+
-Er
3+
耦合对间能量传递过程
能够将一个高能291nm紫外光光子剪裁成近红外796nm和蓝色476nm两个光子。在291nm(34364cm
-1
)紫外光激发下
Tm
3+
的
1
I
6
能级首先被布居
再经过一个交叉弛豫过程使得Er
3+
的
4
I
9/2
和Tm
3+
的
1
G
4
能级同时被布居
从而实现了Tm
3+
的
1
G
4
&
rarr;
3
H
6
和Er
3+
的
4
I
9/2
&
rarr;
4
I
15/2
辐射跃迁。估算了这种下转换过程的能量传递效率
&eta;
ET
和量子效率
&eta;
QE
。通过这种量子剪裁可以解决光谱失配问题
提高GaAs太阳能电池中的转换效率。
paper
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