CaSc2O4:Eu3+: A tunable full-color emitting phosphor for white light emitting diodes

被引：64

作者：

Hao, Zhendong ^{[1
]}

Zhang, Jiahua ^{[1
]}

Zhang, Xia ^{[1
]}

Wang, Xiaojun ^{[1
,2
]}

机构：

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

[2] Georgia So Univ, Dept Phys, Statesboro, GA 30460 USA

来源：

OPTICAL MATERIALS | 2011年 / 33卷 / 03期

关键词：

CaSc2O4; Eu3+; Full-color;

D O I：

10.1016/j.optmat.2010.09.035

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report an intense full-color emission originating from D-5(0,1,2,3) to F-7(0,1,2,3,4) transitions of Eu3+ in CaSc2O4 upon 395 nm excitation. The emission spectra vary with increasing Eu3+ concentration, demonstrating tunable color coordinates from white to red region in the CIE chromaticity diagram. Considering the relaxation from D-5(J) to D-5(J-1) through cross energy transfer, the Eu3+ concentration dependent emission spectra are well simulated based on the analysis of steady state rate equations and the measured lifetimes of the D-5(J) levels. It is suggested that CaSc2O4:Eu3+ could be a potential single-phased full-color emitting phosphor for near-ultraviolet InGaN chip pumped white light emitting diodes. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：355 / 358

页数：4

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