Optical properties and energy transfers of Ce3+ and Mn2+ in Ba9Sc2(SiO4)6

被引：17

作者：

Zhang, Xia ^{[1
]}

Liu, Yongfu ^{[1
]}

Lin, Jian ^{[1
,2
]}

Hao, Zhendong ^{[1
]}

Luo, Yongshi ^{[1
]}

Liu, Qingzhe ^{[3
]}

Zhang, Jiahua ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Luminescence & Applicat, Changchun 130033, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

[3] NW Univ Xian, Dept Phys, Xian 710069, Peoples R China

来源：

JOURNAL OF LUMINESCENCE | 2014年 / 146卷

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

Ba9Sc2(SiO4)(6):Ce3+; Mn2+; Luminescence; Energy transfer; White LED; MN2+-ACTIVATED PHOSPHORS; ELECTRONIC STATES; LUMINESCENCE;

D O I：

10.1016/j.jlumin.2013.10.017

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Analysis of XRD patterns indicates that Ce3+ and Mn2+ in Ba9Sc2(SiO4)(6) (BSS) presents preferably at the Sc3+ and the Ba2+ site, respectively. Ba9Sc2(SiO4)(6):Ce3+ (BSS:Ce3+) exhibits an intense emission band peaked at 383 nm. Codoping Mn2+ into this material can generate a red emission band at 615 nm of Mn2+ through Ce3+-Mn2+ energy transfers ETs). To achieve the ET mechanisms, critical distance and coefficient, the dynamical processes of the ET are investigated based on Inokuti-Hirayama model. For Ce3+ concentration of 5 mol%, the corresponding rate constant and the critical distance are evaluated to be 8.4 x 10(-37) cm(6) s(-1) and 0.52 nm, respectively. The ET efficiency can reach 48%. The emission intensity ratio of the Mn2+ to the Ce3+ is also studied to understand color-tunable luminescence as the blue Ce3+ is excited by UV light. These results show the promising application of this phosphor for white LEDs. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：321 / 324

页数：4

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