Optical Properties of Europium-doped Silver Ion Conducting Glasses

YANG Yan-min; YANG Zhi-ping; CHEN Bao-jiu; LI Pan-lai; LI Xu; GUO Qing-lin

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Optical Properties of Europium-doped Silver Ion Conducting Glasses

paper | 更新时间：2020-08-12

- Optical Properties of Europium-doped Silver Ion Conducting Glasses
- Chinese Journal of Luminescence Vol. 30, Issue 6, Pages: 773-777(2009)
- 作者机构：
  
  1. 大连海事大学物理系,辽宁大连,116026
  2. 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：
  CLC： O482.31
- Received：31 March 2009，
  
  Revised：02 January 1900，
  
  Published Online：30 December 2009，
  
  Published：30 December 2009
- 稿件说明：
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YANG Yan-min, YANG Zhi-ping, CHEN Bao-jiu, et al. Optical Properties of Europium-doped Silver Ion Conducting Glasses[J]. Chinese journal of luminescence, 2009, 30(6): 773-777.
DOI：

YANG Yan-min, YANG Zhi-ping, CHEN Bao-jiu, et al. Optical Properties of Europium-doped Silver Ion Conducting Glasses[J]. Chinese journal of luminescence, 2009, 30(6): 773-777. DOI：

摘要

空气气氛下在铕激活银离子导电玻璃中

实现了Eu

→Eu

的还原。通过改变基质中Ag

O的含量

能够调整Eu

/Eu

比率

从而实现白光发射。在Ag

O的摩尔分数为30%时

发射光的色坐标为(

=0.31

=0.36)

色温为5 000 K。对Ag

O的引入引起Eu

→Eu

还原的机理进行了分析。可以相信铕激活银离子导电玻璃将成为白光LED理想的基质材料。

Abstract

The reduction of Eu

to Eu

in air was observed in silver ion conducting glasses prepared by melt-quenching technique. White light emission is realized by controlling the sliver concentration

which changes the ratio of Eu

/Eu

. The typical white light emission is shown at the sample

where the concentration proportion of B

and Ag

O is equal to 7 : 3

whose chromaticity coordinates are(

=0.31

=0.36)

color temperatures is 5 000 K. The mechanism of Ag

O leading to the reduction of Eu

to Eu

in air was discussed. A possible explanation can be ascribed to the influence of sliver nanoparticle

which would be formed when the glass melts are poured into pre-heated brass molds and annealed. Since sliver atom is unstable and its outer electron would be transferred to Eu

ions and makes Eu

reduce to Eu

. This hypothesis is based upon our previous work. We synthesized borate glass containing sliver nanoparticle by annealing at 500 ℃

which shows yellow body colors. However

we found that yellow is translated into colorlessness after aging for 3 months. By measuring the absorption spectra we can confirm sliver nanoparticle is oxidated into sliver ions because sliver nanoparticle has an absorption peak at 400 nm coming from silver particles surface plasmon. The redshift reason of the emission peak position of Eu

with increasing Ag

O content is attributed to two different locations of Eu

ions coming from BO

and BO

groups. As Ag

O concentration increases BO

keeps increasing

accordingly

the excitation band at 430 nm shifts toward red. It is believed that Eu-doped silver ion conducting glasses would be potentially useful as an ultraviolet-convertible phosphor for white light-emitting diodes.

关键词

Keywords

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