Preparation and Luminescence Properties of ZnAl2O4/SiO2:RE3+ (RE=Eu, Tb, Ce) Glass Ceramics by Sol-gel Method

CUI Xiang-shui; CHEN Wen-zhe

doi:10.3788/fgxb20153604.0400

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Preparation and Luminescence Properties of ZnAl₂O₄/SiO₂:RE³⁺ (RE=Eu, Tb, Ce) Glass Ceramics by Sol-gel Method

更新时间：2020-08-12

- Preparation and Luminescence Properties of ZnAl₂O₄/SiO₂:RE³⁺ (RE=Eu, Tb, Ce) Glass Ceramics by Sol-gel Method
- Chinese Journal of Luminescence Vol. 36, Issue 4, Pages: 400-407(2015)
- 作者机构：
  
  1. 福州大学材料科学与工程学院,福建福州,350108
  2. 厦门理工学院材料科学与工程学院,福建厦门,361024
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20153604.0400
  CLC： O482.31
- Received：07 January 2015，
  
  Revised：03 March 2015，
  
  Published：03 April 2015
- 稿件说明：
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崔祥水, 陈文哲,. 稀土离子(Eu3+,Tb3+,Ce3+)掺杂ZnAl2O4/SiO2微晶玻璃的制备与发光性能[J]. 发光学报, 2015,36(4): 400-407

CUI Xiang-shui, CHEN Wen-zhe,. Preparation and Luminescence Properties of ZnAl2O4/SiO2:RE3+ (RE=Eu, Tb, Ce) Glass Ceramics by Sol-gel Method[J]. Chinese Journal of Luminescence, 2015,36(4): 400-407
崔祥水, 陈文哲,. 稀土离子(Eu3+,Tb3+,Ce3+)掺杂ZnAl2O4/SiO2微晶玻璃的制备与发光性能[J]. 发光学报, 2015,36(4): 400-407 DOI： 10.3788/fgxb20153604.0400.

CUI Xiang-shui, CHEN Wen-zhe,. Preparation and Luminescence Properties of ZnAl2O4/SiO2:RE3+ (RE=Eu, Tb, Ce) Glass Ceramics by Sol-gel Method[J]. Chinese Journal of Luminescence, 2015,36(4): 400-407 DOI： 10.3788/fgxb20153604.0400.

摘要

采用凝胶法分别制备出4.5ZnO-5.5Al

-90SiO

(ZAS)以及ZAS[DK]:

(

=Eu

Ce) 透明微晶玻璃。利用X射线衍射仪(XRD)、透射电子显微镜(TEM)和荧光光谱仪(PL)等测试手段

研究了稀土离子掺杂浓度对ZAS微晶玻璃的结构和发光性能的影响。XRD结果表明

ZAS[DK]:

(

=Eu

Ce)微晶玻璃包含ZnAl

晶相和SiO

非晶相

ZnAl

平均晶粒尺寸约为30 nm

稀土离子的掺杂没有显著改变原来的ZnAl

晶体结构。TEM结果表明

900 ℃时ZnAl

从ZAS体系中析出。PL光谱显示

存在

跃迁

ZAS[DK]:Eu

在611 nm 处发出强烈的红色光;由于Tb

的

跃迁

ZAS[DK]:Tb

在541 nm 处发出明亮的绿色光;ZAS[DK]:Ce

在381 nm处显示了蓝光发射

对应于Ce

的5d4f 轨道跃迁。ZAS[DK]:

(

=Eu

Ce)的PL发射光谱存在着浓度猝灭现象

、Tb

和Ce

的最佳单掺杂摩尔分数分别为20%、20%和3%。CIE色度图表明

ZAS[DK]:

(

=Eu

Ce)的色坐标分别位于红光、绿光和蓝光区域。实验结果表明

ZAS:

(

=Eu

Ce) 微晶玻璃是一种良好的可用于全色显示的白光LED材料。

Abstract

Transparent bulk glass ceramics of 4.5ZnO-5.5Al

-90SiO

(ZAS) and single doped ZAS:

(

=Eu

Ce) were synthesized by sol-gel method. X-ray diffraction (XRD)

transmission electron microscopy (TEM) and photoluminescence (PL) spectra were employed to study the influence of doping rare-earth ions concentration on the structure and luminescence properties of ZAS glass-ceramics. XRD results show that ZAS:

(

=Eu

Ce) glass ceramics heat-treated at 900 ℃ consist of ZnAl

phase with average grain size of 30 nm and amorphous SiO

. TEM results show that ZnAl

were precipitated from ZAS system when heat-treated at 900 ℃

and doping ions have not changed the original structure. PL spectra indicate that ZAS:Eu

emits intense 611 nm red light originating from

transition of Eu

ions

ZAS:Tb

shows 541 nm green emission attributed to

transition of Tb

ions

and ZAS:Ce

gives 381 nm blue light corresponding to the 5d to 4f transition of Ce

ions. Furthermore

the concentration quenching phenomena are observed while the single doping mole fraction of Eu

and Ce

was 20%

20% and 3%

respectively. The excellent Commission International de I'Eclairage (CIE) chromaticity coordinates of ZAS:

(

=Eu

Ce) glass-ceramics indicate that they are good candidates for the application of white LEDs.

关键词

Keywords

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