Synthesis and Down-conversion Luminescence of Er3+,Yb3+ Codoped NaYF4 Phosphors

CAI Shu-zhen; LIU Lin-lin; LI Ming-ming; YU Fang; MI Cao; LI Xiao-dong; ZHANG Jiao; LIU Yan

doi:10.3788/fgxb20143509.1058

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Synthesis and Down-conversion Luminescence of Er³⁺,Yb³⁺ Codoped NaYF₄ Phosphors

更新时间：2020-08-12

- Synthesis and Down-conversion Luminescence of Er³⁺,Yb³⁺ Codoped NaYF₄ Phosphors
- Chinese Journal of Luminescence Vol. 35, Issue 9, Pages: 1058-1064(2014)
- 作者机构：
  
  河北大学物理科学与技术学院,河北保定,071002
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20143509.1058
  CLC： O482.31
- Received：28 May 2014，
  
  Revised：22 July 2014，
  
  Published：03 September 2014
- 稿件说明：
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蔡淑珍, 刘琳琳, 李明明等. Er3+,Yb3+共掺杂的NaYF4荧光粉的制备及下转换发光研究[J]. 发光学报, 2014,35(9): 1058-1064

CAI Shu-zhen, LIU Lin-lin, LI Ming-ming etc. Synthesis and Down-conversion Luminescence of Er3+,Yb3+ Codoped NaYF4 Phosphors[J]. Chinese Journal of Luminescence, 2014,35(9): 1058-1064
蔡淑珍, 刘琳琳, 李明明等. Er3+,Yb3+共掺杂的NaYF4荧光粉的制备及下转换发光研究[J]. 发光学报, 2014,35(9): 1058-1064 DOI： 10.3788/fgxb20143509.1058.

CAI Shu-zhen, LIU Lin-lin, LI Ming-ming etc. Synthesis and Down-conversion Luminescence of Er3+,Yb3+ Codoped NaYF4 Phosphors[J]. Chinese Journal of Luminescence, 2014,35(9): 1058-1064 DOI： 10.3788/fgxb20143509.1058.

摘要

采用高温固相法合成了Er

、Yb

共掺杂的NaYF

荧光粉。XRD测量数据表明合成的样品为纯相。测量了样品的激发谱和发射谱，证明377 nm的紫外光通过量子剪裁的形式将能量传递给一个Yb

，发射一个975 nm的红外光子，再从

9/2

能级跃迁到基态发射一个红外光子。测量了377 nm激发下，监测541 nm的发光寿命曲线，计算得到最大的量子效率为126.35%。通过监测Yb

的975 nm的近红外发射，证明了Er

的

7/2

和

11/2

能级通过下转换的形式将吸收的485 nm和519 nm的能量传递给Yb

。这种将Er

在可见光波段的多种光子能量传递给Yb

发射975 nm的近红外光子的思想在以前的研究中从未被提出。

Abstract

doped NaYF

phosphors were prepared by high-temperature solid state method. Structures of the samples were investigated by X-ray diffraction. The excitation and emission spectra of the phosphors were measured. The 377 nm photon jumped from

11/2

9/2

and the energy was transferred to

5/2

energy level of Yb

. A 975 nm near-infrared photon was thus obtained. Then

the photon in

9/2

jumped to the ground state and emitted a 670 nm red photon. Furthermore

the luminescence decay curves of 541 nm emission excited by 377 nm were measured

and the quantum efficiencies were calculated. The maximum quantum efficiency was 126.35%. By monitoring the 975 nm emission

the energy transfer from

7/2

(485 nm) and

11/2

(519 nm) of Er

to Yb

also occurred by down-conversion. This research has not been done before.

关键词

Keywords

references

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