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Ba2+调制SrGe4-
x O9∶x Mn4+晶体结构及其发光性质Crystal Structure and Luminescent Properties of Ba2+ Modulated SrGe4-
x O9∶x Mn4+ Phosphors- 发光学报 2021年42卷第5期 页码：642-649
- 作者机构：
1.陕西师范大学，化学化工学院，陕西 西安 710062
2.陕西师范大学，基础实验教学中心，陕西 西安 710062
3.烟台希尔德新材料有限公司，山东 烟台 264006
- 作者简介：
[ "魏恒伟(1988-)，男，陕西周至人，博士，实验师,2017年于陕西师范大学获得博士学位，主要从事白光LED用无机发光材料的研究E-mail: whwsnnu@snnu.edu.cn" ]
[ "李雅婷(1999-)，女，内蒙古鄂尔多斯人，在读本科生，主要从事白光LED用荧光粉的研究。E-mail: 1922501831@snnu.edu.cn" ]
[ "焦桓(1968-)，女，陕西三原人，博士，教授,2001年于西北工业大学获得博士学位，主要从事固体无机材料、照明、显示与新能源发光材料的基础与应用研究。E-mail: jiaohuan@snnu.edu.cn" ]
- 基金信息：国家自然科学基金(51672167);西安市科技计划(201805027YD5CG11);陕西师范大学创新创业训练计划项目(S202010718057)
DOI：10.37188/CJL.20200386
中图分类号： O482.31收稿：2020-12-15，
修回：2021-02-02，
纸质出版：2021-05-01
- 稿件说明：
移动端阅览
魏恒伟, 李雅婷, 凌钰婷, 等. Ba2+调制SrGe4-
x O9∶x Mn4+晶体结构及其发光性质[J]. 发光学报, 2021,42(5):642-649.Heng-wei WEI, Ya-ting LI, Yu-ting LING, et al. Crystal Structure and Luminescent Properties of Ba2+ Modulated SrGe4-
x O9∶x Mn4+ Phosphors[J]. Chinese Journal of Luminescence, 2021, 42(5): 642-649.魏恒伟, 李雅婷, 凌钰婷, 等. Ba2+调制SrGe4-
x O9∶x Mn4+晶体结构及其发光性质[J]. 发光学报, 2021,42(5):642-649. DOI： 10.37188/CJL.20200386.Heng-wei WEI, Ya-ting LI, Yu-ting LING, et al. Crystal Structure and Luminescent Properties of Ba2+ Modulated SrGe4-
x O9∶x Mn4+ Phosphors[J]. Chinese Journal of Luminescence, 2021, 42(5): 642-649. DOI： 10.37188/CJL.20200386.
摘要
采用传统固相法在1 100 ℃合成了SrGe
4-
x
O
9
∶
x
Mn
4+
(SGOM)系列荧光粉，通过Ba
2+
取代Sr
2+
调制了荧光粉基质的局部结构，对样品的晶体结构、发光性质和热稳定性进行了探讨。XRD测试结果表明
Mn
4+
和Ba
2+
均成功地掺杂进入基质SrGe
4
O
9
晶格，没有其他物相产生。在275 nm紫外光激发下
SGOM荧光粉的发射光谱是位于600~750 nm的深红色谱带，峰值波长位于660 nm，主要源于Mn
4+
离子
2
E
g
→
4
A
2g
能级跃迁的窄带发射，优化的Mn
4+
浓度为0.015。利用Ba
2+
离子对SrGe
3.985
O
9
∶0.015Mn
4+
荧光粉的发光性质进行调控，发现随着Ba
2+
浓度增大，发射光谱的强度先上升后下降，最佳Ba
2+
浓度为0.4。 Ba
2+
离子的引入造成基质结构中Sr1O10多面体产生局部扩张，导致样品的发射光谱展宽。为了解决封装白光LED中有机材料存在的难以承受发热的问题，制备出了基于SrGe
3.985
O
9
∶0.015Mn
4+
荧光粉的荧光玻璃。优良的发光性质和热稳定性使SGOM荧光粉具备了应用于白光LED器件的前景。
Abstract
A series of SrGe
4-
x
O
9
∶
x
Mn
4+
(SGOM) phosphors were prepared at 1 100 ℃ by traditional solid-state method. The crystal structure
luminescent properties and temperature-dependent of SGOM were investigated. Local structure of SrGe
4
O
9
(SGO) was modulated by the introducing of Ba
2+
ions. The results of XRD showed that both Mn
4+
and Ba
2+
ions were successfully doped into the SGO
and no other impurity phase was detected. Fluorescent measurement indicates that SGOM phosphors produce red emission(600~750 nm) upon UV(275 nm) light excitation
which can be attributed to
2
E
g
→
4
A
2g
of Mn
4+
. The optimal Mn
4+
concentration in these phosphors equals 0.015. The emission spectra of SrGe
3.985
O
9
∶0.015Mn
4+
was tuned by the introducing of Ba
2+
ions. The luminescent intensity of SGOM was improved up to 50% when the Ba
2+
doping concentration is 0.4
and an emission spectra broadening was also observed. This phenomenon is thought to be originated from the expanding of the local structure of Sr1O10 polyhedron caused by the Ba
2+
doping. The phosphor-in-glass(PiG) technique was used to explore the properties of SGOM phosphor to overcome the decomposing issue of the organic materials. These phosphors exhibit potential application in WLED.
关键词
Keywords
references
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