Synthesis and Photoluminescence Properties of A Novel Green-emitting Phosphor(Ce0.67Tb0.33)MgAl11O19∶Mn2+

XIA Zhang-gen; LIANG Yu-jun; HUANG Wen-zhu; LI Yun-li; YANG Fan; LI Xue-jing

doi:10.3788/fgxb20133402.0144

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Synthesis and Photoluminescence Properties of A Novel Green-emitting Phosphor(Ce_0.67Tb_0.33)MgAl₁₁O₁₉∶Mn²⁺

paper | 更新时间：2020-08-12

- Synthesis and Photoluminescence Properties of A Novel Green-emitting Phosphor(Ce_0.67Tb_0.33)MgAl₁₁O₁₉∶Mn²⁺
- Chinese Journal of Luminescence Vol. 34, Issue 2, Pages: 144-148(2013)
- 作者机构：
  
  1. 中国地质大学材料与化学学院,湖北武汉,430074
  2. 中国地质大学教育部纳米矿物材料及应用工程研究中心,湖北武汉,430074
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20133402.0144
  CLC： O482.31
- Received：25 October 2012，
  
  Revised：19 December 2012，
  
  Published：10 February 2013
- 稿件说明：
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夏章艮, 梁玉军, 黄文珠, 李云丽, 杨帆, 李雪静. 新型绿色发光材料(Ce0.67Tb0.33)MgAl11O19∶Mn2+的合成及其光学性能[J]. 发光学报, 2013,34(2): 144-148

XIA Zhang-gen, LIANG Yu-jun, HUANG Wen-zhu, LI Yun-li, YANG Fan, LI Xue-jing. Synthesis and Photoluminescence Properties of A Novel Green-emitting Phosphor(Ce0.67Tb0.33)MgAl11O19∶Mn2+[J]. Chinese Journal of Luminescence, 2013,34(2): 144-148
夏章艮, 梁玉军, 黄文珠, 李云丽, 杨帆, 李雪静. 新型绿色发光材料(Ce0.67Tb0.33)MgAl11O19∶Mn2+的合成及其光学性能[J]. 发光学报, 2013,34(2): 144-148 DOI： 10.3788/fgxb20133402.0144.

XIA Zhang-gen, LIANG Yu-jun, HUANG Wen-zhu, LI Yun-li, YANG Fan, LI Xue-jing. Synthesis and Photoluminescence Properties of A Novel Green-emitting Phosphor(Ce0.67Tb0.33)MgAl11O19∶Mn2+[J]. Chinese Journal of Luminescence, 2013,34(2): 144-148 DOI： 10.3788/fgxb20133402.0144.

摘要

采用高温固相法成功地合成了新型高效绿色荧光粉 (Ce

0.67

0.33

)Mg

∶

。通过XRD和荧光光谱等对其结构及发光性能进行了系统研究。结果表明:新合成的(Ce

0.67

0.33

)Mg

∶

与典型的商用绿粉(Ce

0.67

0.33

)MgAl

(CMAT)具有相同的晶体结构;激发光谱处于237~326 nm范围内

由一个峰位位于291 nm的宽激发带组成

这是典型的Ce

的特征激发;在紫外光激发下

该荧光粉除了在490

541

590

620 nm存在Tb

的特征发射峰外

还在516 nm出现了一个较强的归属于Mn

的

(G)

(S)电子跃迁的宽发射峰。Mn

作为共激活剂增大了该荧光材料在绿色区域的发射面积

其中(Ce

0.67

0.33

)Mg

0.850

∶0.150Mn

荧光粉发射光谱的积分面积最大

为CMAT的226%

其CIE坐标为(0.194

0.695)

比CMAT(0.288

0.572)更加接近NTSC标准值(0.21

0.71)

即Mn

的引入不但提高了荧光粉的发光效率

而且改善了其色纯度。结果表明新型(Ce

0.67

0.33

)Mg

∶

绿色荧光粉比传统的CMAT在显示领域具有更好的潜在应用前景。

Abstract

The novel green-emission phosphors (Ce

0.67

0.33

)Mg

∶

have been prepared at 1 300℃ by solid-state reaction method. The crystal structure and photoluminescence properties were characterized by XRD and fluorescence spectra

respectively. The results show that (Ce

0.67

0.33

)Mg

∶

has the same crystal structure with the typical commercial green phosphor (Ce

0.67

0.33

)MgAl

(CMAT). The excitation spectrum consists of a broad band range from 237 to 326 nm centered at 291 nm

which can be attributed to the characteristic excitation peaks of Ce

. While excited under ultraviolet light

the phosphors exhibit not only the characteristic emission peaks of Tb

at 490

541

590 and 620 nm

but also a new broad emission band around 516 nm

which is assigned to the

(G)

(S) electron transition of Mn

. The integral area of the emission spectrum increases while doped with Mn

as a co-activator

and the integral area is about 226% of CMAT as

=15.0%

and the CIE 1931 chromaticity coordinates of Mn

doped phosphors (0.194

0.695) are closer to the NTSC standard values (0.21

0.71) while compared with CMAT (0.288

0.572). The results indicate that this new phosphor has a higher luminous efficiency in green area and color purity than that of CMAT

and it has a promising application in display fields.

关键词

Keywords

references

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