Energy Transfer of Tm3+-Er3+ Couples in NaYF4 Microcrystals

LIU Chun-xu; WANG Yang; ZHANG Ji-sen; WANG Peng-cheng; LUO Yong-shi; WANG Li-jun

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Energy Transfer of Tm³⁺-Er³⁺ Couples in NaYF₄ Microcrystals

paper | 更新时间：2020-08-12

- Energy Transfer of Tm³⁺-Er³⁺ Couples in NaYF₄ Microcrystals
- Chinese Journal of Luminescence Vol. 31, Issue 6, Pages: 812-815(2010)
- 作者机构：
  
  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,吉林长春,130033
  2. 长春理工大学理学院原子与分子物理系,吉林长春,130024
- 作者简介：
- 基金信息：
- DOI：
  CLC： O482.31
- Received：15 June 2010，
  
  Revised：20 August 2010，
  
  Published Online：22 November 2010，
  
  Published：22 November 2010
- 稿件说明：
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刘春旭, 王阳, 张继森, 王鹏程, 骆永石, 王立军. NaYF4微晶中Tm3+-Er3+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 Tm3+-Er3+ Couples in NaYF4 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. NaYF4微晶中Tm3+-Er3+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 Tm3+-Er3+ Couples in NaYF4 Microcrystals[J]. Chinese Journal of Luminescence, 2010,31(6): 812-815 DOI：

摘要

在NaYF

微晶中借助于Tm

-Er

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

的

能级首先被布居

再经过一个交叉弛豫过程使得Er

的

9/2

和Tm

的

能级同时被布居

从而实现了Tm

的

和Er

的

9/2

15/2

辐射跃迁。估算了这种下转换过程的能量传递效率

和量子效率

。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。

Abstract

Energy up- and down-conversions are two efficient methods to resolve spectral mismatch. This paper reports down-conversions in solar cells based GaAs. The energy is transfered from Tm

749 nm (13 356 cm

-1

) transition to Er

9/2

15/2

796 nm (12 563 cm

-1

) by the cross relaxations

under excitation of Tm

294 nm (34 364 cm

-1

)

where the

level is used as an intermediate state. Then a high energy ultraviolet photon 294 nm can be cut into a near infrared 796nm photon and a blue 476 nm photon. Energy transfer efficiency and quantum cutting efficiency were estimated with experimental data. The spectral mismatch can be improved by the quantum cutting to enhance the conversion efficiency of solar cells.

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Keywords

references

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