Tunable Color of Ce3+/Tb3+/Mn2+-Coactivated CaScAlSiO6 via Energy Transfer: A Single-Component Red/White-Emitting Phosphor

被引：174

作者：

Lu, Wei ^{[1
]}

Guo, Ning ^{[1
,2
]}

Jia, Yongchao ^{[1
,2
]}

Zhao, Qi ^{[1
,2
]}

Lv, Wenzhen ^{[1
,2
]}

Jiao, Mengmeng ^{[1
,2
]}

Shao, Baiqi ^{[1
,2
]}

You, Hongpeng ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

INORGANIC CHEMISTRY | 2013年 / 52卷 / 06期

基金：

中国国家自然科学基金;

关键词：

TB3+; LUMINESCENCE;

D O I：

10.1021/ic3024666

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of single-component red/white-emitting CaScAlSiO6:Ce3+,Tb3+,Mn2+ phosphors have been synthesized by a solid-state reaction. It is observed that CaScAlSiO6:Ce3+,Tb3+ phosphors exhibit two dominating bands situated at 380 and 542 nm, originating from the allowed 5d -> 4f transition of the Ce3+ ion and the D-5(4) -> F-7(J) = (J = 6, 5, 4, 3) transition of the Tb3+ ion, respectively. As for CaScAlSiO6:Ce3+,Mn2+, our results indicate that Mn2+ may occupy not only a Ca2+ site to generate an orange emission [Mn2+(I)] at 590 nm but also a Sc3+ site to generate a red emission [Mn2+(II)] at 670 nm. Both energy transfers from Ce3+ to Tb3+ and from Ce3+ to Mn2+ in the CaScAlSiO6 host are investigated and have been demonstrated to be of the resonant type via a dipole dipole mechanism. By proper tuning of the relative composition of Tb3+/Mn2+, white light can also be achieved upon excitation of UV light, indicating that the developed phosphor may potentially be used as a single-component red/white-emitting phosphor for UV-light-emitting diodes.

引用

页码：3007 / 3012

页数：6

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