Eu2+和Dy3+掺杂浓度对Sr2MgSi2O7材料的荧光和长余辉性能的影响

无机材料学报, 2016, 31(8): 819-826. doi: 10.15541/jim20150624

Eu2+和Dy3+掺杂浓度对Sr2MgSi2O7材料的荧光和长余辉性能的影响

毛启楠 ^1, , 李鹤 ^2, , 季振国 ^3, , 席俊华 ^4, , 张峻 ^5, , 孔哲 ^6,

1.杭州电子科技大学材料与环境工程学院,杭州,310018

2.杭州电子科技大学材料与环境工程学院,杭州,310018

3.杭州电子科技大学材料与环境工程学院,杭州,310018

4.杭州电子科技大学材料与环境工程学院,杭州,310018

5.杭州电子科技大学材料与环境工程学院,杭州,310018

6.杭州电子科技大学材料与环境工程学院,杭州,310018

基金项目: Science and Technology Project of Zhejiang Province(2014C33220,2015C37037) Zhejiang Provincial Natural Science Foundation of China(LY15E030009) 浙江省科技计划项目(2014C33220,2015C37037)National Natural Science Foundation of China(61372025) 国家自然科学基金(61372025) 浙江省自然科学基金(LY15E030009)

关键词：硅酸镁锶 , 发光性能 , 掺杂 , 浓度淬灭

Influence of Eu2+ and Dy3+ Concentrations on Fluorescence and Phosphorescence of Sr2MgSi2O7 Phosphors

Keywords： Sr2MgSi2O7 , luminescent property , doping , concentration quenching

采用高温固相法制备得到Sr2MgSi2O7∶ Eu2+和Sr2MgSi2O7∶ Eu2+,Dy3+发光粉,并详细研究了Eu2+和Dy3+的掺杂浓度对Sr2MgSi2O7材料的荧光和长余辉性能的影响.所有样品都在470 nm附近呈现较宽的发光峰,这可归因于Eu2+离子的4f65d→4f7电子能级跃迁.当Eu2+掺杂浓度超过淬灭浓度,其浓度淬灭效应导致发光粉的荧光强度下降和余辉时间减短.同时,发射峰的峰位随Eu2+浓度的增加而发生红移,这主要由于晶体场分裂能和斯托克斯位移变化造成的,而电子云扩大效应变化所产生的影响相对较弱.Dy3+离子会抑制荧光,但有助于延长余辉时间.当其掺杂浓度超过10mol％时,Eu2+\Dy3+离子通过隧道复合机制发生浓度淬灭,从而使材料的长余辉寿命减少.

参考文献

[1]	Matsuzawa T.;Takeuchi N.;Murayama Y.;Aoki Y..NEW LONG PHOSPHORESCENT PHOSPHOR WITH HIGH BRIGHTNESS, SRAL2O4-EU2+,DY3+[J].Journal of the Electrochemical Society,19968(8):2670-2673.
[2]	Haoyi Wu;Yihua Hu;Li Chen;Xiaojuan Wang.Enhancement on the afterglow properties of Sr_2MgSi_2O_7: Eu~2+ by Er~3+ codoping[J].Materials Letters,201117/18(17/18):2676-2679.
[3]	Xinguo Zhang;Xueping Tang;Jilin Zhang.Luminescent properties of Sr2MgSi2O7:Eu~(2+) as blue phosphor for NUV light-emitting diodes[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,20102/3(2/3):263-267.
[4]	Alvani AAS;Moztarzadeh F;Sarabi AA.Preparation and properties of long afterglow in alkaline earth silicate phosphors co-doped by Eu2O3 and Dy2O3[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,20053/4(3/4):147-150.
[5]	Ling Jiang;Chengkang Chang;Dali Mao.Concentration quenching of Eu~(2+) in Ca_2MgSi_2O_7:Eu~(2+) phosphor[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,20033(3):271-275.
[6]	Xiufeng Song;Renli Fu;Simeon Agathopoulos;Hong He;Xinran Zhao;Shaodong Zhang.Photoluminescence properties of Eu~(2+)-activated CaSi_(2)O_(2)N_(2): Redshift and concentration quenching[J].Journal of Applied Physics,20093(3):033103-1-033103-5.
[7]	Hee-Suk Roh;In-Sun Cho;Jae-Sul An.Enhanced photoluminescence property of Dy~(3+) co-doped BaAl_2O_4:Eu~(2+) green phosphors[J].CERAMICS INTERNATIONAL,20121(1):443-447.
[8]	Hyunho Shin;Shafqat Ullah;Kwanghyun Chung.Effect of nominal substitution of Dy~(3+) for host cations in SrAl_2O_4: Eu~(2+) phosphor on phase evolution and long afterglow luminescence[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2012:181-187.
[9]	Haranath D;Sharma P;Chander H.Optimization of boric acid content in developing efficient blue emitting, long persistent phosphor[J].Journal of Physics, D. Applied Physics: A Europhysics Journal,20053(3):371-375.
[10]	Gupta, Bipin Kumar;Kumar, Arun;Kumar, Pawan;Dwivedi, Jaya;Pandey, G. N.;Kedawat, Garima.Probing on green long persistent Eu2+/Dy3+ doped Sr3SiAl4O11 emerging phosphor for security applications[J].Journal of Applied Physics,201524(24):243104-1-243104-9.
[11]	Ju, G.;Hu, Y.;Chen, L.;Wang, X.;Mu, Z..Concentration quenching of persistent luminescence[J].Physica, B. Condensed Matter,2013:1-4.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网