Mechanics of Upconversion Luminescence in Glass and Glass Ceramics Co-doped with Tm<SUP>3+</SUP>/Yb<SUP>3+</SUP>

ZHANG Ming; YU Hua; ZHANG Ming-hao; HOU Chun-xiao; ZHAO Li-juan

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Mechanics of Upconversion Luminescence in Glass and Glass Ceramics Co-doped with Tm³⁺/Yb³⁺

paper | 更新时间：2020-08-12

- Mechanics of Upconversion Luminescence in Glass and Glass Ceramics Co-doped with Tm³⁺/Yb³⁺
- Chinese Journal of Luminescence Vol. 30, Issue 3, Pages: 304-308(2009)
- 作者机构：
  
  1. 南开大学物理科学学院光子学中心, 天津 300071
  2. 南开大学弱光非线性光子学教育部重点实验室, 天津市信息光子材料与技术重点实验室, 天津 300457
- 作者简介：
- 基金信息：
- DOI：
  CLC： O482.31
- Received：25 August 2008，
  
  Revised：02 January 1900，
  
  Published Online：30 June 2009，
  
  Published：30 June 2009
- 稿件说明：
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ZHANG Ming, YU Hua, ZHANG Ming-hao, et al. Mechanics of Upconversion Luminescence in Glass and Glass Ceramics Co-doped with Tm³⁺/Yb³⁺[J]. Chinese journal of luminescence, 2009, 30(3): 304-308.
DOI：

ZHANG Ming, YU Hua, ZHANG Ming-hao, et al. Mechanics of Upconversion Luminescence in Glass and Glass Ceramics Co-doped with Tm³⁺/Yb³⁺[J]. Chinese journal of luminescence, 2009, 30(3): 304-308. DOI：

摘要

利用高温固相法制备了Tm

/Yb

共掺杂的氟氧化物玻璃和玻璃陶瓷材料

在980 nm的激光激发下

样品发射出明亮的蓝色上转换荧光。通过对玻璃和玻璃陶瓷样品的对比

发现Tm

离子和Yb

离子之间存在着Tm

(

)→Yb

(

5/2

)的反向能量传输通道

并且与晶场有较强的依赖关系。分析了在玻璃和玻璃陶瓷中蓝色上转换发光过程

随着敏化剂Yb

浓度的增加

在玻璃中正向和反向能量传递的竞争作用使得Tm

离子在Yb

离子的最佳浓度时上转换发光最强;而在玻璃陶瓷中

离子的上转换发光始终随着Yb

离子的浓度增加而增强。

Abstract

/Yb

-codoped transparent oxyfluoride glass and glass ceramics were prepared by melt-quenching and subsequently heat-treatment to forming the fluoride nanocrystals embedded among the oxide glassy matrix. The advantages of these materials are that the rare earth ions are incorporated selectively in the fluoride crystal phase with lower phonon energy after heat-treatment and the material remains transparent due to much smaller size of precipitated crystals than the wavelength of visible light. Intense blue upconversion luminescence was observed under 980 nm laser excitation. X-ray diffraction (XRD) and fluorescence spectra investigation reveal that fluoride nanocrystals are distributed homogeneously among the glassy matrix for the sample doped with Tm

/Yb

. Tm

is one of the most studied rare-earth ions for blue laser operation based on upconversion. One approach to improving the luminescent efficiency of Tm

is to co-doped with other rare-earth ions. The choice of host materials is also an important issue when it deals with improving the efficiency of the emission process. With the increasing Yb

concentration

blue upconversion emissions show different variable tendency in glass and glass ceramics co-doped with Tm

/Yb

. In this paper

different upconversion energy transfer processes were explained and reverse energy transfer pathway from Tm

(

) to Yb

(

5/2

) was influenced by crystal lattice field in glass and glass ceramics. In glass

the competition of positive and reverse energy transfer between Tm

and Yb

ions causes maximal blue upconversion emission at optimal Yb

concentration. The blue upconversion emission

however

increases with the increasing Yb

ion in glass ceramics.

关键词

Keywords

references

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Mechanics of Upconversion Luminescence in Glass and Glass Ceramics Co-doped with Tm3+/Yb3+

DOI：

摘要

Abstract

关键词

Keywords

references

Mechanics of Upconversion Luminescence in Glass and Glass Ceramics Co-doped with Tm³⁺/Yb³⁺