Surface Coating of BAM Phosphors with MgF2

SHEN Jing-fei; WANG Hai-bo; HUANG Ru-xi; ZHU Yue-hua; ZHONG Jin-huan; JING Yan-jun

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Surface Coating of BAM Phosphors with MgF₂

更新时间：2020-08-12

- Surface Coating of BAM Phosphors with MgF₂
- Chinese Journal of Luminescence Vol. 29, Issue 2, Pages: 264-268(2008)
- 作者机构：
  
  1. 南京工业大学, 材料科学与工程学院,江苏南京,210009
  2. 南京工业大学, 电光源研究所,江苏南京,210015
  3. 浙江工业大学, 化学与材料学院,浙江杭州,310014
- 作者简介：
- 基金信息：
- DOI：
  CLC： O482.31
- Received：04 July 2007，
  
  Revised：24 October 2007，
  
  Published：20 March 2008
- 稿件说明：
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沈静飞, 王海波, 黄如喜, 朱月华, 钟金环, 井艳军. BaMgAl10O17:Eu2+的MgF2表面包覆[J]. 发光学报, 2008,29(2): 264-268

SHEN Jing-fei, WANG Hai-bo, HUANG Ru-xi, ZHU Yue-hua, ZHONG Jin-huan, JING Yan-jun. Surface Coating of BAM Phosphors with MgF2[J]. Chinese Journal of Luminescence, 2008,29(2): 264-268
沈静飞, 王海波, 黄如喜, 朱月华, 钟金环, 井艳军. BaMgAl10O17:Eu2+的MgF2表面包覆[J]. 发光学报, 2008,29(2): 264-268 DOI：

SHEN Jing-fei, WANG Hai-bo, HUANG Ru-xi, ZHU Yue-hua, ZHONG Jin-huan, JING Yan-jun. Surface Coating of BAM Phosphors with MgF2[J]. Chinese Journal of Luminescence, 2008,29(2): 264-268 DOI：

摘要

采用溶胶-凝胶法对蓝色荧光粉BaMgAl

:Eu

(BAM)进行表面包膜处理

获得了表面均匀包覆MgF

膜层的BAM荧光粉。并用SEM、XRD和IR手段对其表面形貌、晶格结构性能进行了表征;用EDS对BAM粉体的表面元素进行了定性分析;用荧光光谱测试对荧光粉的发光性能进行了研究。结果表明

在BAM粉体表面均匀包覆MgF

层后

BAM的晶格结构

发光性能没有改变

初始亮度较未包覆的荧光粉有所降低

经过相同条件的热处理后

包覆MgF

荧光粉的亮度热衰减程度明显低于未包覆的荧光粉

且色坐标偏移现象不明显。

Abstract

In this work

BAM phosphors were coated with MgF

by sol-gel process. The surface morphology and the crystal structure were characterized by SEM

IR and XRD

respectively. The results indicated that the surface of BAM phosphors were evenly coated by MgF

and the crystal structure of the coated BAM phosphors remained the same as the uncoated samples

i.e. after surface treatment

the luminescence centre of Eu

didn't shift

which still remain the emission with wavelength about 450 nm. The surface component of BAM phosphors coated with MgF

was analyzed qualitatively by EDS. The emitting spectra of BAM phosphor particles coated without and with MgF

were investigated under 254.7 nm excitation. The results demonstrated that the initial luminance of coated BAM phosphors was lower than the uncoated samples. But after roasting at 550

650℃ for 30 min respectively

the luminescence degradation of the coated BAM phosphors was improved greatly.

关键词

Keywords

references

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